10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

[X]              QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES

EXCHANGE ACT OF 1934

FOR THE QUARTERLY PERIOD ENDED: September 30, 2017

OR

[  ]              TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES

EXCHANGE ACT OF 1934

FOR THE TRANSITION PERIOD FROM _______________ TO _________________

COMMISSION FILE NUMBER: 1-33796

CHIMERA INVESTMENT CORPORATION

(Exact name of Registrant as specified in its Charter) 

MARYLAND	26-0630461
(State or other jurisdiction of incorporation or organization)	(IRS Employer Identification No.)

520 Madison Avenue 32nd Floor

NEW YORK, NEW YORK

(Address of principal executive offices)

10022

(Zip Code)

(212) 626-2300

(Registrant’s telephone number, including area code)

Indicate by check mark whether the Registrant (1) has filed all documents and reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days:

Yes þ No ☐

Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Yes þ No ☐

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, non-accelerated filer, or a smaller reporting company. See definition of “accelerated filer,” “large accelerated filer,” “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer þ Accelerated filer ☐ Non-accelerated filer ☐ Smaller reporting company ☐

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ☐ No þ

APPLICABLE ONLY TO CORPORATE ISSUERS:

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the last practicable date:

Class	Outstanding at October 31, 2017
Common Stock, $0.01 par value	187,781,029

CHIMERA INVESTMENT CORPORATION

FORM 10-Q

TABLE OF CONTENTS

Part I. FINANCIAL INFORMATION
Item 1. Consolidated Financial Statements:
Consolidated Statements of Financial Condition as of September 30, 2017 (Unaudited) and December 31, 2016 (Derived from the audited consolidated financial statements as of December 31, 2016)	2
Consolidated Statements of Operations (Unaudited) for the quarters and nine months ended September 30, 2017 and 2016	3
Consolidated Statements of Comprehensive Income (Unaudited) for the quarters and nine months ended September 30, 2017 and 2016	4
Consolidated Statements of Changes in Stockholders’ Equity (Unaudited) for the nine months ended September 30, 2017 and 2016	5
Consolidated Statements of Cash Flows (Unaudited) for the nine months ended September 30, 2017 and 2016	6
Notes to Consolidated Financial Statements (Unaudited)	7
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	43
Item 3. Quantitative and Qualitative Disclosures about Market Risk	65
Item 4. Controls and Procedures	69
Part II.  OTHER INFORMATION
Item 1. Legal Proceedings	69
Item 1A. Risk Factors	70
Item 6. Exhibits	70
SIGNATURES	71

1

Part I

Item 1. Consolidated Financial Statements

CHIMERA INVESTMENT CORPORATION
CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION
(dollars in thousands, except share and per share data)
(Unaudited)
	September 30, 2017			December 31, 2016
Assets:
Cash and cash equivalents	$	38,055		$	177,714
Non-Agency RMBS, at fair value	2,950,348			3,330,063
Agency MBS, at fair value	4,354,872			4,167,754
Loans held for investment, at fair value	13,538,052			8,753,653
Receivable for investment sold	11,235			—
Accrued interest receivable	99,421			79,697
Other assets	172,876			166,350
Derivatives, at fair value, net	22,525			9,677
Total assets (1)	$	21,187,384		$	16,684,908
Liabilities:
Repurchase agreements ($8.2 billion and $7.0 billion, pledged as collateral, respectively)	$	6,709,821		$	5,600,903
Securitized debt, collateralized by Non-Agency RMBS ($1.6 billion and $1.8 billion pledged as collateral, respectively)	233,113			334,124
Securitized debt at fair value, collateralized by loans held for investment ($13.0 billion and $8.8 billion pledged as collateral, respectively)	9,683,062			6,941,097
Payable for investments purchased	733,142			520,532
Accrued interest payable	64,280			48,670
Dividends payable	95,000			97,005
Accounts payable and other liabilities	21,331			16,694
Derivatives, at fair value	1,204			2,350
Total liabilities (1)	$	17,540,953		$	13,561,375
Commitments and Contingencies (See Note 15)
Stockholders' Equity:
Preferred Stock, par value of $0.01 per share, 100,000,000 shares authorized:
8.00% Series A cumulative redeemable: 5,800,000 shares issued and outstanding, respectively ($145,000 liquidation preference)	$	58		$	58
8.00% Series B cumulative redeemable: 13,000,000 and 0 shares issued and outstanding, respectively ($325,000 liquidation preference)	130			—
Common stock: par value $0.01 per share; 300,000,000 shares authorized, 187,781,000 and 187,739,634 shares issued and outstanding, respectively	1,878			1,877
Additional paid-in-capital	3,825,832			3,508,779
Accumulated other comprehensive income	813,118			718,106
Cumulative earnings	2,860,244			2,443,184
Cumulative distributions to stockholders	(3,854,829		)	(3,548,471		)
Total stockholders' equity	$	3,646,431		$	3,123,533
Total liabilities and stockholders' equity	$	21,187,384		$	16,684,908

(1) The Company's consolidated statements of financial condition include assets of consolidated variable interest entities (“VIEs”) that can only be used to settle obligations and liabilities of the VIE for which creditors do not have recourse to the primary beneficiary (Chimera Investment Corporation). As of September 30, 2017 and December 31, 2016, total assets of consolidated VIEs were $14,846,980 and $10,761,954, respectively, and total liabilities of consolidated VIEs were $9,954,437 and $7,302,905, respectively. See Note 8 for further discussion.

See accompanying notes to consolidated financial statements.

2

CHIMERA INVESTMENT CORPORATION
CONSOLIDATED STATEMENTS OF OPERATIONS
(dollars in thousands, except share and per share data)
(Unaudited)
	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
Net interest income:
Interest income (1)	$	296,813		$	250,953		$	836,801		$	673,246
Interest expense (2)	140,358			94,911			388,544			241,120
Net interest income	156,455			156,042			448,257			432,126
Other-than-temporary impairments:
Total other-than-temporary impairment losses	(784		)	(993		)	(4,245		)	(8,555		)
Portion of loss recognized in other comprehensive income	(10,684		)	(10,581		)	(39,431		)	(34,652		)
Net other-than-temporary credit impairment losses	(11,468		)	(11,574		)	(43,676		)	(43,207		)
Other investment gains (losses):
Net unrealized gains (losses) on derivatives	9,204			27,628			19,902			(51,382		)
Realized gains (losses) on terminations of interest rate swaps	—			—			(16,143		)	(60,616		)
Net realized gains (losses) on derivatives	(7,841		)	(14,268		)	(28,680		)	(58,934		)
Net gains (losses) on derivatives	1,363			13,360			(24,921		)	(170,932		)
Net unrealized gains (losses) on financial instruments at fair value	19,042			32,999			159,047			80,217
Net realized gains (losses) on sales of investments	1			3,079			9,709			7,035
Gains (losses) on extinguishment of debt	(1		)	(45		)	(48,016		)	(1,811		)
Total other gains (losses)	20,405			49,393			95,819			(85,491		)
Other income:
Other income	—			—			—			95,000
Total other income	—			—			—			95,000
Other expenses:
Compensation and benefits	7,533			6,911			22,759			19,087
General and administrative expenses	4,537			4,332			13,162			13,073
Servicing fees	10,715			9,788			31,193			23,139
Deal expenses	3,357			—			16,054			13,022
Total other expenses	26,142			21,031			83,168			68,321
Income (loss) before income taxes	139,250			172,830			417,232			330,107
Income taxes	18			13			172			65
Net income (loss)	$	139,232		$	172,817		$	417,060		$	330,042
Dividend on preferred stock	9,400			—			24,083			—
Net income (loss) available to common shareholders	$	129,832		$	172,817		$	392,977		$	330,042
Net income (loss) per share available to common shareholders:
Basic	$	0.69		$	0.92		$	2.09		$	1.76
Diluted	$	0.69		$	0.92		$	2.09		$	1.76
Weighted average number of common shares outstanding:
Basic	187,779,794			187,729,765			187,773,715			187,727,667
Diluted	188,192,111			187,919,792			188,176,757			187,917,694
Dividends declared per share of common stock	$	0.50		$	0.48		$	1.50		$	1.94

(1) Includes interest income of consolidated VIEs of $241,195 and $195,488 for the quarters ended September 30, 2017 and 2016, respectively and interest income of consolidated VIEs of $668,621 and $488,353 for the nine months ended September 30, 2017 and 2016 respectively. See Note 8 to consolidated financial statements for further discussion.

(2) Includes interest expense of consolidated VIEs of $101,856 and $70,715 for the quarters ended September 30, 2017 and 2016, respectively and interest expense of consolidated VIEs of $290,264 and $168,738 for the nine months ended September 30, 2017 and 2016 respectively. See Note 8 to consolidated financial statements for further discussion.

See accompanying notes to consolidated financial statements.

3

CHIMERA INVESTMENT CORPORATION
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(dollars in thousands, except share and per share data)
(Unaudited)
	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
Comprehensive income (loss):
Net income (loss)	$	139,232		$	172,817		$	417,060		$	330,042
Other comprehensive income:
Unrealized gains (losses) on available-for-sale securities, net	21,370			(18,364		)	59,114			94,059
Reclassification adjustment for net losses included in net income for other-than-temporary credit impairment losses	11,468			11,574			43,676			43,207
Reclassification adjustment for net realized losses (gains) included in net income	(1		)	(2,680		)	(7,778		)	(13,354		)
Other comprehensive income (loss)	32,837			(9,470		)	95,012			123,912
Comprehensive income (loss) before preferred stock dividends	$	172,069		$	163,347		$	512,072		$	453,954
Dividends on preferred stock	$	9,400		$	—		$	24,083		$	—
Comprehensive income (loss) available to common stock shareholders	$	162,669		$	163,347		$	487,989		$	453,954

4

CHIMERA INVESTMENT CORPORATION
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
(dollars in thousands, except per share data)
(Unaudited)
	Series A Preferred Stock Par Value		Series B Preferred Stock Par Value		Common Stock Par Value		Additional Paid-in Capital		Accumulated Other Comprehensive Income		Cumulative Earnings		Cumulative Distributions to Stockholders			Total
Balance, December 31, 2015	$	—	$	—	$	1,877	$	3,366,568	$	773,791	$	1,891,239	$	(3,087,287	)	$	2,946,188
Net income (loss)	—		—		—		—		—		330,042		—			330,042
Other comprehensive income (loss)	—		—		—		—		123,912		—		—			123,912
Stock based compensation	—		—		—		1,375		—		—		—			1,375
Common dividends declared	—		—		—		—		—		—		(364,717		)	(364,717		)
Balance, September 30, 2016	$	—	$	—	$	1,877	$	3,367,943	$	897,703	$	2,221,281	$	(3,452,004	)	$	3,036,800
Balance, December 31, 2016	$	58	$	—	$	1,877	$	3,508,779	$	718,106	$	2,443,184	$	(3,548,471	)	$	3,123,533
Net income (loss)	—		—		—		—		—		417,060		—			417,060
Other comprehensive income (loss)	—		—		—		—		95,012		—		—			95,012
Stock based compensation	—		—		1		2,754		—		—		—			2,755
Common dividends declared	—		—		—		—		—		—		(282,275		)	(282,275		)
Preferred dividends declared	—		—		—		—		—		—		(24,083		)	(24,083		)
Issuance of preferred stock	—		130		—		314,299		—		—		—			314,429
Balance, September 30, 2017	$	58	$	130	$	1,878	$	3,825,832	$	813,118	$	2,860,244	$	(3,854,829	)	$	3,646,431

See accompanying notes to consolidated financial statements.

5

CHIMERA INVESTMENT CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS
(dollars in thousands)
(Unaudited)
	For the Nine Months Ended
	September 30, 2017			September 30, 2016
Cash Flows From Operating Activities:
Net income	$	417,060		$	330,042
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
(Accretion) amortization of investment discounts/premiums, net	(17,269		)	4,084
Accretion (amortization) of deferred financing costs and securitized debt discounts/premiums, net	6,649			(5,769		)
Amortization of swaption premium	5,468			5,130
Net unrealized losses (gains) on derivatives	(19,902		)	51,382
Margin (paid) received on derivatives	(3,948		)	(41,283		)
Net unrealized losses (gains) on financial instruments at fair value	(159,047		)	(80,217		)
Net realized losses (gains) on sales of investments	(9,709		)	(7,035		)
Net other-than-temporary credit impairment losses	43,676			43,207
(Gain) loss on extinguishment of debt	48,016			1,811
Equity-based compensation expense	2,755			1,375
Changes in operating assets:
Decrease (increase) in accrued interest receivable, net	(19,738		)	(18,081		)
Decrease (increase) in other assets	(5,076		)	(36,969		)
Changes in operating liabilities:
Increase (decrease) in accounts payable and other liabilities	4,635			3,905
Increase (decrease) in accrued interest payable, net	15,631			12,311
Net cash provided by (used in) operating activities	$	309,201		$	263,893
Cash Flows From Investing Activities:
Agency MBS portfolio:
Purchases	$	(1,000,336	)	$	(810,630	)
Sales	693,207			2,555,228
Principal payments	332,140			471,657
Non-Agency RMBS portfolio:
Purchases	(7,978		)	(160,805		)
Sales	5,045			95,399
Principal payments	459,854			402,971
Loans held for investment:
Purchases	(5,835,799		)	(4,745,083		)
Principal payments	1,298,855			696,281
Net cash provided by (used in) investing activities	$	(4,055,012	)	$	(1,494,982	)
Cash Flows From Financing Activities:
Proceeds from repurchase agreements	$	29,079,905		$	27,792,856
Payments on repurchase agreements	(27,970,987		)	(29,414,676		)
Net proceeds from preferred stock offerings	314,429			—
Proceeds from securitized debt borrowings, collateralized by loans held for investment	4,159,073			4,180,227
Payments on securitized debt borrowings, collateralized by loans held for investment	(1,564,489		)	(773,875		)
Payments on securitized debt borrowings, collateralized by Non-Agency RMBS	(103,415		)	(146,729		)
Common dividends paid	(281,832		)	(364,168		)
Preferred dividends paid	(26,532		)	—
Net cash provided by (used in) financing activities	$	3,606,152		$	1,273,635
Net increase (decrease) in cash and cash equivalents	(139,659		)	42,546
Cash and cash equivalents at beginning of period	177,714			114,062
Cash and cash equivalents at end of period	$	38,055		$	156,608
Supplemental disclosure of cash flow information:
Interest received	$	799,808		$	659,249
Interest paid	$	366,284		$	234,577
Non-cash investing activities:
Payable for investments purchased	$	733,142		$	578,499
Receivable for investments sold	$	11,235		$	—
Net change in unrealized gain (loss) on available-for sale securities	$	95,012		$	123,912
Non-cash financing activities:
Common dividends declared, not yet paid	$	95,000		$	90,645

See accompanying notes to consolidated financial statements.

6

CHIMERA INVESTMENT CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

1. Organization

Chimera Investment Corporation (the “Company”) was organized in Maryland on June 1, 2007. The Company commenced operations on November 21, 2007 when it completed its initial public offering. The Company elected to be taxed as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended, and regulations promulgated thereunder (the “Code”).

The Company conducts its operations through various subsidiaries including subsidiaries it treats as taxable REIT subsidiaries (“TRS”). In general, a TRS may hold assets and engage in activities that the Company cannot hold or engage in directly and generally may engage in any real estate or non-real estate related business. The Company currently has eight wholly owned direct subsidiaries: Chimera RMBS Whole Pool LLC, and Chimera RMBS LLC formed in June 2009; CIM Trading Company LLC (“CIM Trading”), formed in July 2010; Chimera Funding TRS LLC (“CIM Funding TRS”), a TRS formed in October 2013, Chimera CMBS Whole Pool LLC and Chimera RMBS Securities LLC formed in March 2015; Chimera Insurance Company, LLC formed in July 2015 and Chimera RR Holdings LLC formed in April 2016.

2. Summary of the Significant Accounting Policies

(a) Basis of Presentation and Consolidation

The accompanying consolidated financial statements and related notes of the Company have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). In the opinion of management, all adjustments considered necessary for a fair presentation of the Company's financial position, results of operations and cash flows have been included. Certain prior period amounts have been reclassified to conform to the current period's presentation.

The consolidated financial statements include, the Company’s accounts, the accounts of its wholly-owned subsidiaries, and variable interest entities (“VIEs”) in which the Company is the primary beneficiary. All intercompany balances and transactions have been eliminated in consolidation.

The Company uses securitization trusts considered to be VIEs in its securitization and re-securitization transactions. VIEs are defined as entities in which equity investors (i) do not have the characteristics of a controlling financial interest, or (ii) do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support from other parties. The entity that consolidates a VIE is known as its primary beneficiary, and is generally the entity with (i) the power to direct the activities that most significantly impact the VIEs’ economic performance, and (ii) the right to receive benefits from the VIE or the obligation to absorb losses of the VIE that could be significant to the VIE. For VIEs that do not have substantial on-going activities, the power to direct the activities that most significantly impact the VIEs’ economic performance may be determined by an entity’s involvement with the design and structure of the VIE.

The trusts are structured as pass through entities that receive principal and interest on the underlying collateral and distribute those payments to the security holders. The assets held by the securitization entities are restricted in that they can only be used to fulfill the obligations of the securitization entity. The Company’s risks associated with its involvement with these VIEs are limited to its risks and rights as a holder of the security it has retained.

Determining the primary beneficiary of a VIE requires significant judgment. The Company determined that for the securitizations it consolidates, its ownership provides the Company with the obligation to absorb losses or the right to receive benefits from the VIE that could be significant to the VIE. In addition, the Company has the power to direct the activities of the VIEs that most significantly impact the VIEs’ economic performance (“power”) such as rights to direct servicer activity or the Company was determined to have power in connection with its involvement with the purpose and design of the VIE.

The Company’s interest in the assets held by these securitization vehicles, which are consolidated on the Company’s Statements of Financial Condition, is restricted by the structural provisions of these trusts, and a recovery of the Company’s investment in the vehicles will be limited by each entity’s distribution provisions. The liabilities of the securitization vehicles, which are also consolidated on the Company’s Statements of Financial Condition, are non-recourse to the Company, and can generally only be satisfied from each securitization vehicle’s respective asset pool.

7

The assets of securitization entities are comprised of senior classes of residential mortgage backed securities (“RMBS”) or residential mortgage loans. See Notes 3, 4 and 8 for further discussion of the characteristics of the securities and loans in the Company’s portfolio.

(b) Statements of Financial Condition Presentation

The Company’s Consolidated Statements of Financial Condition include both the Company’s direct assets and liabilities and the assets and liabilities of consolidated securitization vehicles. Assets of each consolidated VIE can only be used to satisfy the obligations of that VIE, and the liabilities of consolidated VIEs are non-recourse to the Company. The Company is not obligated to provide, nor does it intend to provide, any financial support to these consolidated securitization vehicles. The notes to the consolidated financial statements describe the Company’s assets and liabilities including the assets and liabilities of consolidated securitization vehicles. See Note 8 for additional information related to the Company’s investments in consolidated securitization vehicles.

(c) Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Although the Company’s estimates contemplate current conditions and how it expects them to change in the future, it is reasonably possible that actual conditions could be materially different than anticipated in those estimates, which could have a material adverse impact on the Company’s results of operations and its financial condition. Management has made significant estimates including in accounting for income recognition and OTTI on Agency and Non-Agency RMBS and IO MBS (Note 3), valuation of Agency MBS and Non-Agency RMBS (Notes 3 and 5), residential mortgage loans (Note 4), securitized debt (Note 7) and derivative instruments (Notes 5 and 9). Actual results could differ materially from those estimates.

(d) Significant Accounting Policies

There have been no significant changes to the Company's accounting policies included in Note 2 to the consolidated financial statements of the Company’s Form 10-K for the year ended December 31, 2016, other than the significant accounting policies disclosed below.

Income Taxes

The Company does not have any unrecognized tax positions that would affect its financial statements or require disclosure. No accruals for penalties and interest were necessary as of September 30, 2017 or December 31, 2016.

Fair Value Disclosure

The Company has elected to account for Agency MBS investments acquired on or after July 1, 2017 under the fair value option. Under the fair value option, these investments will be carried at fair value, with changes in fair value reported in earnings (included as part of “Net unrealized gains (losses) on financial instruments at fair value”). Consistent with all other investments for which the Company has elected the fair value option, the Company will recognize revenue on a prospective basis in accordance with guidance in ASC 325-40.

All Agency MBS investments owned prior to this date will continue to be carried at fair value with changes in fair value reported in other comprehensive income (OCI) as available-for-sale investments. All revenue recognition for these Agency MBS investments owned prior to July 1, 2017 will be in accordance with ASC 310-20.

A complete discussion of the methodology utilized by the Company to estimate the fair value of its financial instruments is included in Note 5 to these consolidated financial statements.

(e) Recent Accounting Pronouncements

Derivatives and Hedging - Targeted improvements to Accounting for Hedging Activities (Topic 815)

In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging - Targeted improvements to Accounting for Hedging Activities. This update is issued with the objective of improving the financial reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its financial statements. In addition, the

8

amendments in this update make certain targeted improvements to simplify the application of the hedge accounting guidance in current GAAP. The guidance in the ASU is effective for the Company as of January 1, 2019. Early adoption is allowed. The Company is not planning to early adopt and is currently evaluating what impact this update will have on the consolidated financial statements.

Business Combinations - (Topic 805)

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations - Clarifying the Definition of a Business. This update clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. Under the current implementation guidance in Topic 805, there are three elements of a business-inputs, processes, and outputs. While an integrated set of assets and activities (collectively referred to as a “set”) that is a business usually has outputs, outputs are not required to be present. The amendments in this Update provide a screen to determine when a set is not a business. The screen requires that when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the set is not a business. This screen reduces the number of transactions that need to be further evaluated. The guidance in the ASU is effective for the Company as of January 1, 2018. Early adoption is allowed. The amendments in this update should be applied prospectively on or after the effective date. No disclosures are required at transition. The Company is not planning to early adopt and is currently evaluating what impact this update will have on the consolidated financial statements.

Statement of Cash Flows - Restricted Cash - (Topic 230)

In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows - Restricted Cash. This update requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The amendments in this Update do not provide a definition of restricted cash or restricted cash equivalents. The guidance in the ASU is effective for the Company as of January 1, 2018. Early adoption is allowed. The amendments in this update should be applied using a retrospective transition method to each period presented. The Company is not planning to early adopt and is currently evaluating what impact this update will have on the consolidated financial statements.

Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments - (Topic 230)

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments. This update provides guidance on eight specific cash flow issues. The guidance is intended to reduce diversity in practice on those issues across all industries. The guidance in the ASU is effective for the Company as of January 1, 2018. Early adoption is allowed. The guidance is to be applied retrospectively, unless it is impracticable to do so for an issue, then the amendments related to that issue would be applied prospectively. The Company did not elect to early adopt the provisions of this update. The Company is currently evaluating what impact this update will have on the consolidated financial statements.

Financial Instruments - Credit Losses - (Topic 326)

In June 2016, the FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments. This update replaces the current model for recognizing credit losses from an incurred credit loss model to a current expected credit loss (CECL) model for instruments measured at amortized cost and requires entities to record allowances for available-for-sale (AFS) debt securities when the fair value of an AFS debt security is below the amortized cost of the asset rather than reduce the carrying amount, as the Company does under the current OTTI model. This update also simplifies the accounting model for purchased credit-impaired debt securities and loans. The changes in the allowances created in accordance with this update will be recorded in earnings. The update also expands the disclosure requirements regarding the Company's assumptions, models, and methods for estimating the expected credit losses. In addition, the Company will disclose the amortized cost balance for each class of financial asset by credit quality indicator, disaggregated by the year of origination. The guidance in the ASU is effective for the Company as of January 1, 2020. Early adoption is allowed, beginning January 1, 2019. The standard requires entities to record a cumulative-effect adjustment to the statement of financial position as of the beginning of the first reporting period in which the guidance is effective. The Company is currently evaluating what impact this update will have on the consolidated financial statements.

Share Based Payments - (Topic 718)

9

In March 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting. Under this update companies will no longer record excess tax benefits and certain tax deficiencies associated with an award of equity instruments in additional paid-in capital. Instead, they will record all excess tax benefits and tax deficiencies as income tax expense or benefit in the income statement when the awards vest or are settled, and additional paid-in capital pools will be eliminated. The updated guidance will also allow the Company to repurchase more shares than it can today for tax withholding purposes without triggering liability accounting and to make a policy election to account for forfeitures as they occur. The guidance is to be applied using a modified retrospective transition method with a cumulative-effect adjustment recorded in retained earnings. The Company has adopted this guidance as of January 1, 2017. The adoption of this guidance did not have a significant impact on the Company's consolidated financial statements.

Contingent Put and Call Options in Debt Instruments - (Topic 815)

In March 2016, the FASB issued ASU No. 2016-06, Contingent Put and Call Options in Debt Instruments Accounting.  This update clarifies that when a call or put option in a debt instrument can accelerate the repayment of principal on the debt instrument, a reporting entity does not need to assess whether the contingent event that triggers the ability to exercise the call or put option is related to interest rates or credit risk in determining whether the option should be accounted for separately as a derivative. The new guidance applies to existing debt instruments (or hybrid financial instruments that are determined to have a debt host) using a modified retrospective method as of the beginning of the period of adoption. The Company has adopted this guidance as of January 1, 2017. The adoption of this guidance did not have a significant impact on the Company’s consolidated financial statements.

Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships - (Topic 815)

In March 2016, the FASB issued ASU No. 2016-05, Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships. The amendments in this update clarify that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument under Topic 815 does not, in and of itself, require de-designation of that hedging relationship provided that all other hedge accounting criteria continue to be met. The Company has adopted this guidance as of January 1, 2017. The Company currently does not apply hedge accounting for GAAP reporting purposes, therefore this guidance did not have a significant impact on the Company’s consolidated financial statements.

Financial Instruments-Overall (Subtopic 825-10)

In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. This update changes how the Company will present changes in the fair value of financial liabilities measured under the fair value option that are attributable to our own credit.  Under the updated guidance, the Company will record changes in instrument-specific credit risk for financial liabilities measured under the fair value option in other comprehensive income.  The update also requires fair value measurement for equity investments that do not result in consolidation and are not accounted for under the equity method to be measured at fair value with any changes in fair value recognized in net income.  The update also eliminates the requirement to disclose the methods and significant assumptions used to estimate the fair value of financial instruments measured at amortized cost. In addition, the Company will have to use the exit price notion when measuring the fair value of financial instruments measured at amortized cost for disclosure purposes.  The guidance in the ASU is effective for the Company as of January 1, 2018. Early adoption for certain provisions of the update is allowed.  Any adjustment as a result of the adoption of this standard will be recorded as a cumulative-effect adjustment to beginning retained earnings as of the first period in which the guidance is adopted.  The Company did not elect to early adopt the provisions of this update and is currently evaluating what impact this update will have on the consolidated financial statements.

3. Mortgage-Backed Securities

The Company classifies its Non-Agency RMBS as senior, senior IO, subordinated, or subordinated IO. The Company also invests in residential, commercial and IO Agency MBS. Senior interests in Non-Agency RMBS are considered to be entitled to the first principal repayments in their pro-rata ownership interests at the acquisition date. The tables below present amortized cost, fair value and unrealized gain/losses of Company's MBS investments as of September 30, 2017 and December 31, 2016.

10

			September 30, 2017
			(dollars in thousands)
	Principal or Notional Value		Total Premium		Total Discount			Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses			Net Unrealized Gain/(Loss)
Non-Agency RMBS
Senior	$	2,821,535	$	224	$	(1,282,801	)	$	1,538,958	$	2,304,611	$	765,653	$	—		$	765,653
Senior, interest-only	4,948,265		267,964		—			267,964		212,662		13,620		(68,922		)	(55,302		)
Subordinated	531,526		10,764		(188,169		)	354,121		421,487		67,430		(64		)	67,366
Subordinated, interest-only	256,286		12,968		—			12,968		11,588		860		(2,240		)	(1,380		)
Agency MBS
Residential	2,316,838		128,388		—			2,445,226		2,428,112		7,606		(24,720		)	(17,114		)
Commercial	1,774,802		44,913		(4,732		)	1,814,983		1,811,950		13,467		(16,500		)	(3,033		)
Interest-only	3,176,110		121,353		—			121,353		114,810		1,226		(7,769		)	(6,543		)
Total	$	15,825,362	$	586,574	$	(1,475,702	)	$	6,555,573	$	7,305,220	$	869,862	$	(120,215	)	$	749,647

			December 31, 2016
			(dollars in thousands)
	Principal or Notional Value		Total Premium		Total Discount			Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses			Net Unrealized Gain/(Loss)
Non-Agency RMBS
Senior	$	3,190,947	$	231	$	(1,412,058	)	$	1,779,120	$	2,511,003	$	732,133	$	(250	)	$	731,883
Senior, interest-only	5,648,339		292,396		—			292,396		253,539		18,674		(57,531		)	(38,857		)
Subordinated	673,259		16,352		(212,734		)	476,877		553,498		77,857		(1,236		)	76,621
Subordinated, interest-only	266,927		13,878		—			13,878		12,024		—		(1,854		)	(1,854		)
Agency MBS
Residential	2,594,570		149,872		—			2,744,442		2,705,978		11,235		(49,699		)	(38,464		)
Commercial	1,331,543		37,782		(2,688		)	1,366,637		1,316,975		175		(49,837		)	(49,662		)
Interest-only	3,356,491		152,175		—			152,175		144,800		1,893		(9,268		)	(7,375		)
Total	$	17,062,076	$	662,686	$	(1,627,480	)	$	6,825,525	$	7,497,817	$	841,967	$	(169,675	)	$	672,292

The table below presents changes in accretable yield, or the excess of the security’s cash flows expected to be collected over the Company’s investment, solely as it pertains to the Company’s Non-Agency RMBS portfolio accounted for according to the provisions of ASC 310-30.

	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)						(dollars in thousands)
Balance at beginning of period	$	1,383,188		$	1,714,592		$	1,550,110		$	1,742,744
Purchases	8,196			18,316			18,380			60,915
Yield income earned	(66,042		)	(69,850		)	(202,618		)	(141,256		)
Reclassification (to) from non-accretable difference	53,884			(29,490		)	15,777			(2,031		)
Sales and deconsolidation	(17,755		)	(12,907		)	(20,178		)	(39,711		)
Balance at end of period	$	1,361,471		$	1,620,661		$	1,361,471		$	1,620,661

The table below presents the outstanding principal balance and related amortized cost at September 30, 2017 and December 31, 2016 as it pertains to the Company’s Non-Agency RMBS portfolio accounted for according to the provisions of ASC 310-30.

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	For the Quarter Ended		For the Year Ended
	September 30, 2017		December 31, 2016
	(dollars in thousands)
Outstanding principal balance:
Beginning of period	$	2,910,151	$	3,550,698
End of period	$	2,772,746	$	3,138,265
Amortized cost:
Beginning of period	$	1,546,656	$	1,958,726
End of period	$	1,449,531	$	1,695,079

The following tables present the gross unrealized losses and estimated fair value of the Company’s RMBS by length of time that such securities have been in a continuous unrealized loss position at September 30, 2017 and December 31, 2016. All securities in an unrealized loss position have been evaluated by the Company for OTTI as discussed in Note 2(d) of 2016, Form 10-K.

						September 30, 2017
						(dollars in thousands)
	Unrealized Loss Position for Less than 12 Months						Unrealized Loss Position for 12 Months or More						Total
	Estimated Fair Value		Unrealized Losses			Number of Securities	Estimated Fair Value		Unrealized Losses			Number of Securities	Estimated Fair Value		Unrealized Losses			Number of Securities
Non-Agency RMBS
Senior	$	—	$	—		—	$	—	$	—		—	$	—	$	—		—
Senior, interest-only	82,130		(15,487		)	54	73,232		(53,435		)	93	155,362		(68,922		)	147
Subordinated	5,353		(64		)	7	—		—			1	5,353		(64		)	8
Subordinated, interest-only	574		(331		)	2	4,220		(1,909		)	2	4,794		(2,240		)	4
Agency MBS
Residential	1,932,140		(17,187		)	95	234,050		(7,533		)	11	2,166,190		(24,720		)	106
Commercial	876,181		(15,291		)	241	30,311		(1,209		)	1	906,492		(16,500		)	242
Interest-only	29,250		(1,003		)	12	58,031		(6,766		)	21	87,281		(7,769		)	33
Total	$	2,925,628	$	(49,363	)	411	$	399,844	$	(70,852	)	129	$	3,325,472	$	(120,215	)	540

						December 31, 2016
						(dollars in thousands)
	Unrealized Loss Position for Less than 12 Months						Unrealized Loss Position for 12 Months or More						Total
	Estimated Fair Value		Unrealized Losses			Number of Securities	Estimated Fair Value		Unrealized Losses			Number of Securities	Estimated Fair Value		Unrealized Losses			Number of Securities
Non-Agency RMBS
Senior	$	12,384	$	(250	)	3	$	—	$	—		—	$	12,384	$	(250	)	3
Senior, interest-only	96,399		(13,600		)	62	78,516		(43,931		)	86	174,915		(57,531		)	148
Subordinated	56,015		(412		)	7	2,826		(824		)	4	58,841		(1,236		)	11
Subordinated, interest-only	748		(230		)	2	11,276		(1,624		)	3	12,024		(1,854		)	5
Agency MBS
Residential	2,338,910		(48,084		)	106	54,943		(1,615		)	1	2,393,853		(49,699		)	107
Commercial	1,247,923		(45,802		)	646	51,733		(4,035		)	46	1,299,656		(49,837		)	692
Interest-only	63,506		(2,170		)	20	52,963		(7,098		)	16	116,469		(9,268		)	36
Total	$	3,815,885	$	(110,548	)	846	$	252,257	$	(59,127	)	156	$	4,068,142	$	(169,675	)	1002

At September 30, 2017, the Company did not intend to sell any of its RMBS that were in an unrealized loss position, and it was not more likely than not that the Company would be required to sell these RMBS before recovery of their amortized cost

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basis, which may be at their maturity. With respect to RMBS held by consolidated VIEs, the ability of any entity to cause the sale by the VIE prior to the maturity of these RMBS is either expressly prohibited, not probable, or is limited to specified events of default, none of which have occurred as of September 30, 2017.

Gross unrealized losses on the Company’s Agency residential and commercial MBS (excluding Agency MBS which are reported at fair value with changes in fair value recorded in earnings) were $37 million and $100 million as of September 30, 2017 and December 31, 2016, respectively. Given the inherent credit quality of Agency MBS, the Company does not consider any of the current impairments on its Agency MBS to be credit related. In evaluating whether it is more likely than not that it will be required to sell any impaired security before its anticipated recovery, which may be at their maturity, the Company considers the significance of each investment, the amount of impairment, the projected future performance of such impaired securities, as well as the Company’s current and anticipated leverage capacity and liquidity position. Based on these analyses, the Company determined that at September 30, 2017 and December 31, 2016, unrealized losses on its Agency MBS were temporary.

Gross unrealized losses on the Company’s Non-Agency RMBS (excluding Non-Agency MBS which are reported at fair value with changes in fair value recorded in earnings) were $45 thousand and $485 thousand at September 30, 2017 and December 31, 2016, respectively. Based upon the most recent evaluation, the Company does not consider these unrealized losses to be indicative of OTTI and does not believe that these unrealized losses are credit related, but rather are due to other factors. The Company has reviewed its Non-Agency RMBS that are in an unrealized loss position to identify those securities with losses that are other-than-temporary based on an assessment of changes in cash flows expected to be collected for such RMBS, which considers recent bond performance and expected future performance of the underlying collateral.

A summary of the OTTI included in earnings for the quarters and nine months ended September 30, 2017 and 2016 are presented below.

	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)
Total other-than-temporary impairment losses	$	(784	)	$	(993	)	$	(4,245	)	$	(8,555	)
Portion of loss recognized in other comprehensive income (loss)	(10,684		)	(10,581		)	(39,431		)	(34,652		)
Net other-than-temporary credit impairment losses	$	(11,468	)	$	(11,574	)	$	(43,676	)	$	(43,207	)

The following table presents a roll forward of the credit loss component of OTTI on the Company’s Non-Agency RMBS for which a portion of loss was previously recognized in OCI. The table delineates between those securities that are recognizing OTTI for the first time as opposed to those that have previously recognized OTTI.

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	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)
Cumulative credit loss beginning balance	$	571,639		$	546,187		$	556,485		$	529,112
Additions:
Other-than-temporary impairments not previously recognized	—			6,184			12,399			17,137
Reductions for securities sold or deconsolidated during the period	(4,965		)	(2,630		)	(12,405		)	(6,890		)
Increases related to other-than-temporary impairments on securities with previously recognized other-than-temporary impairments	11,468			5,390			29,302			26,069
Reductions for increases in cash flows expected to be collected over the remaining life of the securities	(3,241		)	(1,494		)	(10,880		)	(11,791		)
Cumulative credit impairment loss ending balance	$	574,901		$	553,637		$	574,901		$	553,637

Cash flows generated to determine net other-than-temporary credit impairment losses recognized in earnings are estimated using significant unobservable inputs. The significant inputs used to measure the component of OTTI recognized in earnings for the Company’s Non-Agency RMBS for the periods reported are summarized as follows:

	For the Nine Months Ended
	September 30, 2017	September 30, 2016
Loss Severity
Weighted Average	67%	59%
Range	28% - 89%	25% - 85%
60+ days delinquent
Weighted Average	21%	21%
Range	11% - 27%	0% - 40%
Credit Enhancement (1)
Weighted Average	15%	29%
Range	0% - 50%	0% - 100%
3 Month CPR
Weighted Average	13%	5%
Range	2% - 24%	0% - 19%
12 Month CPR
Weighted Average	13%	4%
Range	4% - 19%	0% - 21%

(1)Calculated as the combined credit enhancement to the Re-REMIC and underlying from each of their respective capital structures.

The following tables present a summary of unrealized gains and losses at September 30, 2017 and December 31, 2016. IO MBS included in the tables below represent the right to receive a specified portion of the contractual interest cash flows of the underlying principal balance of specific securities. At September 30, 2017, IO MBS had a net unrealized loss of $63 million and had an amortized cost of $402 million. At December 31, 2016, IO MBS had a net unrealized loss of $48 million and had an amortized cost of $458 million. The fair value of IOs at September 30, 2017 and December 31, 2016 was $339 million and $410 million, respectively. All changes in fair value of IOs are reflected in Net Income in the Consolidated Statements of Operations.

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			September 30, 2017
			(dollars in thousands)
	Gross Unrealized Gain Included in Accumulated Other Comprehensive Income		Gross Unrealized Gain Included in Cumulative Earnings		Total Gross Unrealized Gain		Gross Unrealized Loss Included in Accumulated Other Comprehensive Income			Gross Unrealized Loss Included in Cumulative Earnings			Total Gross Unrealized Loss
Non-Agency RMBS
Senior	$	765,653	$	—	$	765,653	$	—		$	—		$	—
Senior, interest-only	—		13,620		13,620		—			(68,922		)	(68,922		)
Subordinated	63,348		4,082		67,430		(45		)	(19		)	(64		)
Subordinated, interest-only	—		860		860		—			(2,240		)	(2,240		)
Agency MBS
Residential	7,606		—		7,606		(22,263		)	(2,457		)	(24,720		)
Commercial	13,339		128		13,467		(14,520		)	(1,980		)	(16,500		)
Interest-only	—		1,226		1,226		—			(7,769		)	(7,769		)
Total	$	849,946	$	19,916	$	869,862	$	(36,828	)	$	(83,387	)	$	(120,215	)

			December 31, 2016
			(dollars in thousands)
	Gross Unrealized Gain Included in Accumulated Other Comprehensive Income		Gross Unrealized Gain Included in Cumulative Earnings		Total Gross Unrealized Gain		Gross Unrealized Loss Included in Accumulated Other Comprehensive Income			Gross Unrealized Loss Included in Cumulative Earnings			Total Gross Unrealized Loss
Non-Agency RMBS
Senior	$	732,133	$	—	$	732,133	$	(250	)	$	—		$	(250	)
Senior, interest-only	—		18,674		18,674		—			(57,531		)	(57,531		)
Subordinated	74,584		3,273		77,857		(235		)	(1,001		)	(1,236		)
Subordinated, interest-only	—		—		—		—			(1,854		)	(1,854		)
Agency MBS
Residential	11,235		—		11,235		(49,699		)	—			(49,699		)
Commercial	175		—		175		(49,837		)	—			(49,837		)
Interest-only	—		1,893		1,893		—			(9,268		)	(9,268		)
Total	$	818,127	$	23,840	$	841,967	$	(100,021	)	$	(69,654	)	$	(169,675	)

Changes in prepayments, actual cash flows, and cash flows expected to be collected, among other items, are affected by the collateral characteristics of each asset class. The Company chooses assets for the portfolio after carefully evaluating each investment’s risk profile.

The following tables provide a summary of the Company’s MBS portfolio at September 30, 2017 and December 31, 2016.

	September 30, 2017
	Principal or Notional Value at Period-End (dollars in thousands)		Weighted Average Amortized Cost Basis		Weighted Average Fair Value		Weighted Average Coupon		Weighted Average Yield at Period-End (1)
Non-Agency RMBS
Senior	$	2,821,535	$	54.54	$	81.68	4.4	%	16.7	%
Senior, interest-only	4,948,265		5.42		4.30		1.4	%	7.8	%
Subordinated	531,526		66.62		79.30		4.1	%	9.2	%
Subordinated, interest-only	256,286		5.06		4.52		1.0	%	8.4	%
Agency MBS
Residential pass-through	2,316,838		105.54		104.80		3.8	%	2.9	%
Commercial pass-through	1,774,802		102.26		102.09		3.6	%	3.2	%
Interest-only	3,176,110		3.82		3.61		0.7	%	3.5	%

(1) Bond Equivalent Yield at period end.

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	December 31, 2016
	Principal or Notional Value at Period-End (dollars in thousands)		Weighted Average Amortized Cost Basis		Weighted Average Fair Value		Weighted Average Coupon		Weighted Average Yield at Period-End (1)
Non-Agency RMBS
Senior	$	3,190,947	$	55.76	$	78.69	4.3	%	15.5	%
Senior, interest-only	5,648,339		5.18		4.49		1.5	%	11.7	%
Subordinated	673,259		70.83		82.21		3.8	%	9.2	%
Subordinated, interest-only	266,927		5.20		4.50		1.1	%	13.5	%
Agency MBS
Residential pass-through	2,594,570		105.78		104.29		3.9	%	3.0	%
Commercial pass-through	1,331,543		102.64		98.91		3.6	%	2.9	%
Interest-only	3,356,491		4.53		4.31		0.8	%	3.5	%

(1) Bond Equivalent Yield at period end.

The following table presents the weighted average credit rating of the Company’s Non-Agency RMBS portfolio at September 30, 2017 and December 31, 2016.

	September 30, 2017		December 31, 2016
AAA	0.3	%	0.3	%
AA	0.3	%	0.3	%
A	0.6	%	0.7	%
BBB	0.4	%	0.7	%
BB	2.9	%	3.0	%
B	2.1	%	3.9	%
Below B	62.4	%	67.2	%
Not Rated	31.0	%	23.9	%
Total	100.0	%	100.0	%

Actual maturities of MBS are generally shorter than the stated contractual maturities. Actual maturities of the Company’s MBS are affected by the contractual lives of the underlying mortgages, periodic payments of principal and prepayments of principal. The following tables provide a summary of the fair value and amortized cost of the Company’s MBS at September 30, 2017 and December 31, 2016 according to their estimated weighted-average life classifications. The weighted-average lives of the MBS in the tables below are based on lifetime expected prepayment rates using an industry prepayment model for the Agency MBS portfolio and the Company’s prepayment assumptions for the Non-Agency RMBS. The prepayment model considers current yield, forward yield, steepness of the interest rate curve, current mortgage rates, mortgage rates of the outstanding loan, loan age, margin, and volatility.

16

	September 30, 2017
	(dollars in thousands)
	Weighted Average Life
	Less than one year		Greater than one year and less than five years		Greater than five years and less than ten years		Greater than ten years		Total
Fair value
Non-Agency RMBS
Senior	$	5,611	$	757,644	$	881,904	$	659,452	$	2,304,611
Senior interest-only	113		55,264		72,087		85,198		212,662
Subordinated	—		83,242		183,777		154,468		421,487
Subordinated interest-only	—		133		11,455		—		11,588
Agency MBS
Residential	—		32,666		2,395,446		—		2,428,112
Commercial	—		46,263		16,817		1,748,870		1,811,950
Interest-only	—		82,985		27,122		4,703		114,810
Total fair value	$	5,724	$	1,058,197	$	3,588,608	$	2,652,691	$	7,305,220
Amortized cost
Non-Agency RMBS
Senior	$	5,457	$	549,443	$	563,522	$	420,536	$	1,538,958
Senior interest-only	1,301		78,615		91,461		96,587		267,964
Subordinated	—		67,164		152,048		134,909		354,121
Subordinated interest-only	—		152		12,816		—		12,968
Agency MBS
Residential	—		33,035		2,412,191		—		2,445,226
Commercial	—		47,639		17,216		1,750,128		1,814,983
Interest-only	—		87,733		29,200		4,420		121,353
Total amortized cost	$	6,758	$	863,781	$	3,278,454	$	2,406,580	$	6,555,573

	December 31, 2016
	(dollars in thousands)
	Weighted Average Life
	Less than one year		Greater than one year and less than five years		Greater than five years and less than ten years		Greater than ten years		Total
Fair value
Non-Agency RMBS
Senior	$	25,612	$	508,979	$	1,267,000	$	709,412	$	2,511,003
Senior interest-only	417		37,796		115,780		99,546		253,539
Subordinated	—		94,793		238,630		220,075		553,498
Subordinated interest-only	—		—		12,024		—		12,024
Agency MBS
Residential	—		429,869		2,276,109		—		2,705,978
Commercial	—		47,354		16,833		1,252,788		1,316,975
Interest-only	—		75,863		63,715		5,222		144,800
Total fair value	$	26,029	$	1,194,654	$	3,990,091	$	2,287,043	$	7,497,817
Amortized cost
Non-Agency RMBS
Senior	$	21,423	$	403,250	$	868,624	$	485,823	$	1,779,120
Senior interest-only	1,992		50,252		134,642		105,510		292,396
Subordinated	—		76,287		195,538		205,052		476,877
Subordinated interest-only	—		—		13,878		—		13,878
Agency MBS
Residential	—		438,270		2,306,172		—		2,744,442
Commercial	—		49,027		17,247		1,300,363		1,366,637
Interest-only	—		77,598		69,333		5,244		152,175
Total amortized cost	$	23,415	$	1,094,684	$	3,605,434	$	2,101,992	$	6,825,525

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The Non-Agency RMBS portfolio is subject to credit risk. The Non-Agency RMBS portfolio is primarily collateralized by Alt-A first lien mortgages. An Alt-A mortgage is a type of U.S. mortgage that, for various reasons, is considered riskier than A-paper, or prime, and less risky than subprime, the riskiest category. Alt-A interest rates, which are determined by credit risk, therefore tend to be between those of prime and subprime home loans. Typically, Alt-A mortgages are characterized by borrowers with less than full documentation, lower credit scores and higher loan-to-value ratios. At origination of the loan, Alt-A mortgage securities are defined as Non-Agency RMBS where (i) the underlying collateral has weighted average FICO scores between 680 and 720 or (ii) the FICO scores are greater than 720 and RMBS have 30% or less of the underlying collateral composed of full documentation loans. At September 30, 2017 and December 31, 2016, 69% and 68% of the Non-Agency RMBS collateral was classified as Alt-A, respectively. At September 30, 2017 and December 31, 2016, 11% and 14% of the Non-Agency RMBS collateral was classified as prime, respectively. The remaining Non-Agency RMBS collateral is classified as subprime.

The Non-Agency RMBS in the Portfolio have the following collateral characteristics at September 30, 2017 and December 31, 2016.

	September 30, 2017				December 31, 2016
Weighted average maturity (years)		20.9				21.6
Weighted average amortized loan to value (1)		65.1		%		66.5		%
Weighted average FICO (2)		674				675
Weighted average loan balance (in thousands)		$	320			$	319
Weighted average percentage owner occupied		83.9		%		83.2		%
Weighted average percentage single family residence		65.7		%		65.8		%
Weighted average current credit enhancement		2.2		%		2.3		%
Weighted average geographic concentration of top four states	CA	32.0		%	CA	32.1		%
	NY	8.4		%	FL	8.1		%
	FL	8.2		%	NY	7.9		%
	NJ	2.7		%	NJ	2.7		%

(1) Value represents appraised value of the collateral at the time of loan origination.

(2) FICO as determined at the time of loan origination.

The table below presents the origination year of the underlying loans related to the Company’s portfolio of Non-Agency RMBS at September 30, 2017 and December 31, 2016.

Origination Year	September 30, 2017		December 31, 2016
2003 and prior	3.6	%	3.6	%
2004	4.8	%	4.2	%
2005	19.7	%	20.2	%
2006	39.8	%	38.0	%
2007	29.6	%	31.3	%
2008	1.7	%	1.8	%
2009 and later	0.8	%	0.9	%
Total	100.0	%	100.0	%

Gross realized gains and losses are recorded in “Net realized gains (losses) on sales of investments” on the Company’s Consolidated Statements of Operations. The proceeds and gross realized gains and gross realized losses from sales of investments for the quarters and nine months ended September 30, 2017 and 2016 are as follows:

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	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)
Proceeds from sales	$	598,752		$	58,036		$	772,496		$	2,697,239
Gross realized gains	6,902			3,622			17,468			16,798
Gross realized losses	(6,901		)	(543		)	(7,759		)	(9,763		)
Net realized gain (loss)	$	1		$	3,079		$	9,709		$	7,035

Included in the gross realized gains for the quarter and nine months ended September 30, 2017 in the table above are exchanges of securities with a fair value of $36 million and $63 million, respectively. The Company exchanged its investment in a re-remic security for the underlying collateral supporting the group related to the exchanged asset. These exchanges were treated as non-cash sales and purchases and resulted in a realized gain of $4 million and $9 million, respectively, reflected in earnings for the quarter and nine months ended September 30, 2017. For the quarter and nine months ended September 30, 2016, the fair value of these exchanges of securities was $30 million and $47 million and resulted in a realized gain of $2 million and $1 million, respectively.

4. Loans Held for Investment

The Loans held for investment is comprised primarily of loans collateralized by seasoned subprime residential mortgages. Additionally, it includes non-conforming, single family, owner occupied, jumbo, prime residential mortgages.

At September 30, 2017, all Loans held for investment are carried at fair value. See Note 5 for a discussion on how the Company determines the fair values of the Loans held for investment. As changes in the fair value of these loans are reflected in earnings, the Company does not estimate or record a loan loss provision. The total amortized cost of our Loans held for investments was $13.1 billion and $8.6 billion as of September 30, 2017 and December 31, 2016, respectively.

The following table provides a summary of the changes in the carrying value of Loans held for investment at fair value at September 30, 2017 and December 31, 2016:

	For the Nine Months Ended			For the Year Ended
	September 30, 2017			December 31, 2016
	(dollars in thousands)
Balance, beginning of period	$	8,753,653		$	4,768,416
Purchases	5,835,799			4,897,370
Principal paydowns	(1,298,856		)	(1,022,414		)
Sales and settlements	2,942			5,007
Net periodic accretion (amortization)	(27,310		)	(41,363		)
Change in fair value	271,824			146,637
Balance, end of period	$	13,538,052		$	8,753,653

The primary cause of the change in fair value is due to changes in credit risk of the portfolio.

Residential mortgage loans

The loan portfolio for all residential mortgages were originated during the following years:

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Origination Year	September 30, 2017		December 31, 2016
2002 and prior	7.7	%	8.9	%
2003	6.9	%	5.2	%
2004	15.3	%	11.9	%
2005	20.9	%	20.5	%
2006	21.8	%	22.0	%
2007	18.8	%	20.9	%
2008	5.9	%	6.5	%
2009	0.6	%	0.6	%
2010 and later	2.1	%	3.5	%
Total	100.0	%	100.0	%

The following table presents a summary of key characteristics of the residential loan portfolio at September 30, 2017 and December 31, 2016:

	September 30, 2017				December 31, 2016
Number of loans		147,340				95,155
Weighted average maturity (years)		18.8				19.8
Weighted average loan to value (1)		87.9		%		86.9		%
Weighted average FICO (1)		629				627
Weighted average loan balance (in thousands)		$	90			$	93
Weighted average percentage owner occupied		94.0		%		96.6		%
Weighted average percentage single family residence		85.0		%		85.0		%
Weighted average geographic concentration of top five states	CA	9.2		%	CA	10.0		%
	FL	7.1		%	FL	6.7		%
	OH	6.2		%	OH	6.5		%
	PA	5.6		%	VA	5.9		%
	VA	5.4		%	NC	5.1		%

(1) As provided by the Trustee.

The following table summarizes the outstanding principal balance of the residential loan portfolio which are 30 days delinquent and greater as reported by the servicer at September 30, 2017 and December 31, 2016.

	30 Days Delinquent	60 Days Delinquent	90+ Days Delinquent	Bankruptcy	Foreclosure	REO	Total	Unpaid Principal/Notional
	(dollars in thousands)
September 30, 2017	$462,865	$157,872	$294,458	$230,435	$172,129	$30,306	$1,348,065	$13,327,252
% of Unpaid Principal/Notional	3.5%	1.2%	2.2%	1.7%	1.3%	0.2%	10.1%
December 31, 2016	$363,899	$140,495	$190,991	$207,364	$203,265	$40,709	$1,146,723	$8,868,783
% of Unpaid Principal/Notional	4.1%	1.6%	2.2%	2.3%	2.3%	0.5%	12.9%

The fair value of residential mortgage loans 90 days or more past due was $591 million and $449 million as of September 30, 2017 and December 31, 2016, respectively.

Real estate owned

Real estate owned (“REO”) represents properties which the Company has received the legal title of the property to satisfy the outstanding loan. REO is re-categorized from loan to REO when the Company takes legal title of the property. REO assets are measured and reported at the estimated fair value less the estimated cost to sell at the end of each reporting period. At the time

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the asset is re-categorized, any difference between the previously recorded loan balance and the carrying value of the REO at the time the Company takes legal title of the property, is recognized as a loss. All REO assets of the Company are held-for-sale and it is the Company’s intention to sell the property in the shortest time possible to maximize their return and recovery on the previously recorded loan. The carrying value of REO assets at September 30, 2017 and December 31, 2016 was $10 million and $13 million, respectively, and were recorded in Other Assets on the Company’s consolidated statements of financial condition.

5. Fair Value Measurements

The Company applies fair value guidance in accordance with GAAP to account for its financial instruments. The Company categorizes its financial instruments, based on the priority of the inputs to the valuation technique, into a three-level fair value hierarchy. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). If the inputs used to measure the financial instruments fall within different levels of the hierarchy, the categorization is based on the lowest level input that is significant to the fair value measurement of the instrument. Financial assets and liabilities recorded at fair value on the Consolidated Statements of Financial Condition or disclosed in the related notes are categorized based on the inputs to the valuation techniques as follows:

Level 1 – inputs to the valuation methodology are quoted prices (unadjusted) for identical assets and liabilities in active markets.

Level 2 – inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

Level 3 – inputs to the valuation methodology are unobservable and significant to fair value.

Fair value measurements categorized within Level 3 are sensitive to changes in the assumptions or methodology used to determine fair value and such changes could result in a significant increase or decrease in the fair value. Any changes to the valuation methodology are reviewed by management to ensure the changes are appropriate. As markets and products evolve and the pricing for certain products becomes more transparent, the Company will continue to refine its valuation methodologies. The methodology utilized by the Company for the periods presented is unchanged. The methods used to produce a fair value calculation may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Company believes its valuation methods are appropriate and consistent with other market participants. Using different methodologies, or assumptions, to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. The Company uses inputs that are current as of the measurement date, which may include periods of market dislocation, during which price transparency may be reduced.

During times of market dislocation, the observability of prices and inputs can be difficult for certain investments. If third party pricing services are unable to provide a price for an asset, or if the price provided by them is deemed unreliable by the Company, then the asset will be valued at its fair value as determined by the Company without validation to third-party pricing. Illiquid investments typically experience greater price volatility as an active market does not exist. Observability of prices and inputs can vary significantly from period to period and may cause instruments to change classifications within the three level hierarchy.

A description of the methodologies utilized by the Company to estimate the fair value of its financial instruments by instrument class follows:

Agency MBS and Non-Agency RMBS

The Company determines the fair value of all of its investment securities based on discounted cash flows utilizing an internal pricing model that incorporates factors such as coupon, prepayment speeds, loan size, collateral composition, borrower characteristics, expected interest rates, life caps, periodic caps, reset dates, collateral seasoning, delinquency, expected losses, expected default severity, credit enhancement, and other pertinent factors. To corroborate that the estimates of fair values generated by these internal models are reflective of current market prices, the Company compares the fair values generated by the model to non-binding independent prices provided by two independent third party pricing services. For certain highly liquid asset classes, such as Agency fixed-rate pass-through bonds, the Company’s valuations are also compared to quoted prices for To-Be-Announced (“TBA”) securities.

Each quarter the Company develops thresholds which are determined utilizing current bid/ask spreads, liquidity, price volatility and other factors as appropriate. If internally developed model prices differ from the independent prices provided by greater

21

than a market derived predetermined threshold for the period, the Company highlights these differences for further review, both internally and with the third party pricing service. The Company obtains the inputs used by the third party pricing services and compares them to the Company’s inputs. The Company updates its own inputs if the Company determines the third party pricing inputs more accurately reflect the current market environment. If the Company believes that its internally developed inputs more accurately reflect the current market environment, it will request that the third party pricing service review market factors that may not have been considered by the third party pricing service and provide updated prices. The Company reconciles and resolves all pricing differences in excess of the predetermined thresholds before a final price is established. At September 30, 2017, four investment holdings with an internally developed fair value of $21 million had a difference between the model generated prices and third party prices provided in excess of the derived predetermined threshold for the period. The internally developed prices were $17 million lower than the third party prices provided of $38 million. After review and discussion, the Company affirmed and valued the investments at the lower internally developed prices. No other differences were noted at September 30, 2017 in excess of the derived predetermined threshold for the period. At December 31, 2016, ten investment holdings with an internally developed fair value of $123 million had a difference between the model generated prices and third party prices provided in excess of the derived predetermined threshold for the period. The internally developed prices were $16 million higher than the third party prices provided of $107 million. After review and discussion, the Company affirmed and valued the investments at the higher internally developed prices.

The Company’s estimate of prepayment, default and severity curves all involve judgment and assumptions that are deemed to be significant to the fair value measurement process, which renders the resulting Non-Agency RMBS fair value estimates Level 3 inputs in the fair value hierarchy. As the fair values of Agency MBS are more observable, these investments are classified as level 2 in the fair value hierarchy.

Interest-Only MBS:

The Company accounts for the IO MBS strips at fair value with changes in fair value reported in earnings. The IO MBS strips are included in MBS, at fair value, on the accompanying Consolidated Statements of Financial Condition.

Included in Non-Agency RMBS, at fair value on the Consolidated Statements of Financial Condition are IO MBS strips carried at fair value with changes in fair value reflected in earnings of $224 million and $266 million as of September 30, 2017 and December 31, 2016. Included in Agency MBS, at fair value on the Consolidated Statements of Financial Condition are IO MBS strips carried at fair value with changes in fair value reflected in earnings of $115 million and $145 million as of September 30, 2017 and December 31, 2016. Interest income on all IO MBS securities was $7 million and $10 million for the quarters ended September 30, 2017 and 2016, respectively. Interest income reported on all IO MBS securities was $24 million and $32 million for the nine months ended September 30, 2017 and 2016, respectively.

Agency MBS:

The Company has elected to account for Agency MBS investments acquired on or after July 1, 2017 under the fair value option. Under the fair value option, these investments will be carried at fair value, with changes in fair value reported in earnings (included as part of “Net unrealized gains (losses) on financial instruments at fair value”). Consistent with all other investments for which the Company has elected the fair value option, the Company will recognize revenue on a prospective basis in accordance with guidance in ASC 325-40.

All Agency MBS investments owned prior to this date will continue to be carried at fair value with changes in fair value reported in other comprehensive income (OCI) as available-for-sale investments, consistent with the Company’s current accounting practices. All revenue recognition for these Agency MBS investments owned prior to July 1, 2017 will be in accordance with ASC 310-20, per the Company’s accounting practices.

Non-Agency RMBS:

The Company has elected the fair value option for certain interests in Non-Agency RMBS which it refers to as the overcollateralization classes. The cash flows for these holdings are generally subordinate to all other interests of the trusts and generally only pay out funds when certain ratios are met and excess cash holdings, as determined by the trustee, are available for distribution to the overcollateralization class. Many of the investments in this group have no current cash flows and may not ever pay cash flows, depending on the loss experience of the collateral group supporting the investment. Estimating future cash flows for this group of Non-Agency RMBS investments is highly subjective and uncertain; therefore, the Company records these holdings at fair value with changes in fair value reflected in earnings.

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Changes in fair value are presented in Net unrealized gains (losses) on financial instruments at fair value on the Consolidated Statements of Operations. The fair value of the Non-Agency RMBS carried at fair value with changes in fair value reflected in earnings was $15 million and $19 million as of September 30, 2017 and December 31, 2016, respectively.

The table below shows the unpaid principal, fair value and impact of change in fair value on each of the financial instruments carried with fair value option as of September 30, 2017 and 2016, respectively:

	September 30, 2017
	(dollars in thousands)
	Unpaid Principal/ Notional		Fair Value		Quarter to Date Gain/(Loss) on Change in Fair Value			Year to Date Gain/(Loss) on Change in Fair Value
Assets:
Non-agency RMBS
Subordinated	N/A		14,761		2,678			1,791
Senior, interest-only	4,948,265		212,662		1,784			(16,446		)
Subordinated, interest-only	256,286		11,588		1,048			475
Agency MBS
Residential Pass-through	$	586,030	$	614,758	$	(2,457	)	$	(2,457	)
Commercial Pass-through	407,943		410,013		(1,852		)	(1,852		)
Interest-only	3,176,110		114,810		(779		)	831
Loans held for investment, at fair value	13,327,252		13,538,052		57,114			271,824
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	9,622,994		9,683,062		(38,494		)	(95,120		)

	September 30, 2016
	(dollars in thousands)
	Unpaid Principal/ Notional		Fair Value		Quarter to Date Gain/(Loss) on Change in Fair Value			Year to Date Gain/(Loss) on Change in Fair Value
Assets:
Non-agency RMBS
Subordinated	N/A		20,671		8,257			7,551
Senior, interest-only	5,733,457		291,526		2,214			22,332
Subordinated, interest-only	269,868		13,498		1,289			3,288
Agency MBS
Residential Pass-through	$	—	$	—	$	—		$	—
Commercial Pass-through	—		—		—			—
Interest-only	3,474,731		157,088		(345		)	430
Loans held for investment, at fair value	9,030,908		8,909,037		68,508			113,646
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	7,334,475		7,191,462		(46,923		)	(67,029		)

Loans Held for Investment

Loans consisting of seasoned subprime residential mortgage loans:

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The Company estimates the fair value of its Loans held for investment consisting of seasoned subprime residential mortgage loans on a loan by loan basis using an internally developed model which compares the loan held by the Company with a loan currently offered in the market. The loan price is adjusted in the model by considering the loan factors which would impact the value of a loan. These loan factors include: loan coupon as compared to coupon currently available in the market, FICO, loan-to-value ratios, delinquency history, owner occupancy, and property type, among other factors. A baseline is developed for each significant loan factor and adjusts the price up or down depending on how that factor for each specific loan compares to the baseline rate. Generally, the most significant impact on loan value is the loan interest rate as compared to interest rates currently available in the market and delinquency history. These two factors are based on relevant observable inputs.

The Company also monitors market activity to identify trades which may be used to compare internally developed prices; however, as the portfolio of loans held at fair value is a seasoned subprime pool of mortgage loans, comparable loan pools are not common or directly comparable. There are limited transactions in the market place to develop a comprehensive direct range of values. However, if market data becomes available, the Company will compare this data to the internally developed prices to ensure reasonableness of the valuation.

The Company reviews the fair values generated by the model to determine whether prices are reflective of the current market by corroborating its estimates of fair value by comparing the results to non-binding independent prices provided by two independent third party pricing services for the loan portfolio. Each quarter the Company develops thresholds which are determined utilizing a senior securitization market for a similar pool of loans.

If the internally developed fair values of the loan pools differ from the independent prices provided by greater than a predetermined threshold for the period, the Company highlights these differences for further review, both internally and with the third party pricing service. The Company obtains certain inputs used by the third party pricing services and evaluates them for reasonableness. The Company updates its own model if the Company determines the third party pricing inputs more accurately reflect the current market environment or observed information from the third party vendors. If the Company believes that its internally developed inputs more accurately reflect the current market environment, it will request that the third party pricing service review market factors that may not have been considered by the third party pricing service. The Company reconciles and resolves all pricing differences in excess of the predetermined thresholds before a final price is established.

At September 30, 2017, the internally developed fair values of loan pools of $380 million had a difference between the model generated prices and third party prices provided in excess of the derived predetermined threshold for the period. The internally developed prices were $6 million lower than the third party prices provided of $386 million. After review and discussion, the Company affirmed and valued the investments at the lower internally developed prices. At December 31, 2016, the internally developed fair values of loan pools of $1.60 billion had a difference between the model generated prices and third party prices provided in excess of the derived predetermined threshold for the period. The internally developed prices were $50 million higher than the third party prices provided of $1.55 billion. After review and discussion, the Company affirmed and valued the investments at the higher internally developed prices. No other differences were noted at September 30, 2017 and December 31, 2016 in excess of the derived predetermined threshold for the period.

The Company’s estimates of fair value of Loans held for investment involve management judgment and assumptions that are deemed to be significant to the fair value measurement process, which renders the resulting fair value estimates level 3 inputs in the fair value hierarchy.

Loans collateralized by jumbo, prime residential mortgages:

The loans collateralized by jumbo, prime residential mortgages are carried at fair value. The loans are held as part of a consolidated Collateralized Financing Entity (“CFE”). A CFE is a variable interest entity that holds financial assets, issues beneficial interests in those assets and has no more than nominal equity and the beneficial interests have contractual recourse only to the related assets of the CFE. Accounting guidance for CFEs allow the Company to elect to measure the CFE’s financial assets using the fair value of the CFE’s financial liabilities as the fair values of the financial liabilities of the CFE are more observable. Therefore, the fair value of the loans collateralized by jumbo, prime residential mortgages is based on the fair value of the financial liabilities. See discussion of the fair value of Securitized Debt, collateralized by Loans Held for Investment at fair value below.

As the more observable financial liabilities are considered level 3 in the fair value hierarchy, the Loans collateralized by jumbo, prime residential mortgages are also level 3 in the fair value hierarchy.

Securitized Debt, collateralized by Non-Agency RMBS

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The Company carries securitized debt, collateralized by Non-Agency RMBS at the principal balance outstanding plus unamortized premiums, less unaccreted discounts recorded in connection with the financing of the loans or RMBS with third parties. The Company estimates the fair value of securitized debt, collateralized by Non-Agency RMBS by estimating the future cash flows associated with the underlying assets collateralizing the secured debt outstanding. The Company models the fair value of each underlying asset by considering, among other items, the structure of the underlying security, coupon, servicer, delinquency, actual and expected defaults, actual and expected default severities, reset indices, and prepayment speeds in conjunction with market research for similar collateral performance and management’s expectations of general economic conditions in the sector and other economic factors. This process, including the review process, is consistent with the process used for Agency MBS and Non-Agency RMBS using internal models. For further discussion of the valuation process and benchmarking process, see Agency MBS and Non-Agency RMBS discussion herein.

The Company’s estimates of fair value of securitized debt, collateralized by Non-Agency RMBS involve management’s judgment and assumptions that are deemed to be significant to the fair value measurement process, which renders the resulting fair value estimates level 3 inputs in the fair value hierarchy.

Securitized Debt, collateralized by Loans Held for Investment

The Company determines the fair value of securitized debt, collateralized by loans held for investment based on discounted cash flows utilizing an internal pricing model that incorporates factors such as coupon, prepayment speeds, loan size, collateral composition, borrower characteristics, expected interest rates, life caps, periodic caps, reset dates, collateral seasoning, expected losses, expected default severity, credit enhancement, and other pertinent factors. This process, including the review process, is consistent with the process used for Agency MBS and Non-Agency RMBS using internal models. For further discussion of the valuation process and benchmarking process, see Agency MBS and Non-Agency RMBS discussion herein.

The Company’s estimates of fair value of securitized debt, collateralized by loans held for investment involve management’s judgment and assumptions that are deemed to be significant to the fair value measurement process, which renders the resulting fair value estimates level 3 inputs in the fair value hierarchy.

Derivatives

Interest Rate Swaps and Swaptions

The Company uses clearing exchange market prices to determine the fair value of its exchange cleared interest rate swaps. For bi-lateral swaps, the Company determines the fair value based on the net present value of expected future cash flows on the swap. The Company uses option pricing model to determine the fair value of its swaptions. For bi-lateral swaps and swaptions, the Company compares its own estimate of fair value with counterparty prices to evaluate for reasonableness. Both the clearing exchange and counter-party pricing quotes, incorporate common market pricing methods, including a spread measurement to the Treasury yield curve or interest rate swap curve as well as underlying characteristics of the particular contract. Interest rate swaps and swaptions are modeled by the Company by incorporating such factors as the term to maturity, swap curve, overnight index swap rates, and the payment rates on the fixed portion of the interest rate swaps. The Company has classified the characteristics used to determine the fair value of interest rate swaps as Level 2 inputs in the fair value hierarchy.

Treasury Futures

The fair value of Treasury futures is determined by quoted market prices in an active market. The Company has classified the characteristics used to determine the fair value of Treasury futures as Level 1 inputs in the fair value hierarchy.

Repurchase Agreements

Repurchase agreements are collateralized financing transactions utilized by the Company to acquire investment securities. Due to the short term nature of these financial instruments, the Company estimates the fair value of these repurchase agreements using the contractual obligation plus accrued interest payable.

Short-term Financial Instruments

The carrying value of cash and cash equivalents, accrued interest receivable, receivable for securities sold, dividends payable, payable for investments purchased and accrued interest payable are considered to be a reasonable estimate of fair value due to the short term nature and low credit risk of these short-term financial instruments.

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The Company’s financial assets and liabilities carried at fair value on a recurring basis, including the level in the fair value hierarchy, at September 30, 2017 and December 31, 2016 are presented below.

	September 30, 2017
	(dollars in thousands)
	Level 1		Level 2			Level 3			Counterparty and Cash Collateral, netting			Total
Assets:
Non-Agency RMBS, at fair value	$	—	$	—		$	2,950,348		$	—		$	2,950,348
Agency MBS, at fair value	—		4,354,872			—			—			4,354,872
Loans held for investment, at fair value	—		—			13,538,052			—			13,538,052
Derivatives	4,864		22,771			—			(5,110		)	22,525
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	—		—			(9,683,062		)	—			(9,683,062		)
Derivatives	—		(6,314		)	—			5,110			(1,204		)
Total	$	4,864	$	4,371,329		$	6,805,338		$	—		$	11,181,531

	December 31, 2016
	(dollars in thousands)
	Level 1		Level 2			Level 3			Counterparty and Cash Collateral, netting			Total
Assets:
Non-Agency RMBS, at fair value	$	—	$	—		3,330,063			$	—		$	3,330,063
Agency MBS, at fair value	—		4,167,754			—			—			4,167,754
Loans held for investment, at fair value	—		—			8,753,653			—			8,753,653
Derivatives	1,785		22,327			—			(14,435		)	9,677
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	—		—			(6,941,097		)	—			(6,941,097		)
Derivatives	—		(17,225		)	—			14,875			(2,350		)
Total	$	1,785	$	4,172,856		$	5,142,619		$	440		$	9,317,700

The table below provides a summary of the changes in the fair value of securities classified as Level 3 at September 30, 2017 and December 31, 2016.

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Fair Value Reconciliation, Level 3
	For the Nine Months Ended, September 30, 2017
	(dollars in thousands)
	Non-Agency RMBS			Loans held for investment			Securitized Debt
Beginning balance Level 3 assets	$	3,330,063		$	8,753,653		$	(6,941,097	)
Transfers in to Level 3 assets	6,112			—			—
Transfers out of Level 3 assets	—			—			—
Purchases	71,116			5,835,799			(4,159,073		)
Principal payments	(459,854		)	(1,298,856		)	1,319,120
Sales and Settlements	(68,164		)	2,942			245,369
Accretion (amortization) of purchase discounts	92,201			(27,310		)	(4,247		)
Gains (losses) included in net income
Other than temporary credit impairment losses	(41,702		)	—			—
Realized gains (losses) on sales and settlements	12,031			—			(48,014		)
Net unrealized gains (losses) included in income	(14,179		)	271,824			(95,120		)
Gains (losses) included in other comprehensive income
Total unrealized gains (losses) for the period	22,724			—			—
Ending balance Level 3 assets	$	2,950,348		$	13,538,052		$	(9,683,062	)

Fair Value Reconciliation, Level 3
	For the Year Ended, December 31, 2016
	(dollars in thousands)
	Non-Agency RMBS			Loans held for investment			Securitized Debt
Beginning balance Level 3 assets	$	3,675,841		$	4,768,416		$	(3,720,496	)
Transfers in to Level 3 assets	—			—			—
Transfers out of Level 3 assets	—			—			—
Purchases	257,914			4,897,370			(4,797,255		)
Principal payments	(532,696		)	(1,022,414		)	1,059,854
Sales and Settlements	(149,938		)	5,007			608,816
Accretion (amortization) of purchase discounts	120,638			(41,363		)	(2,128		)
Gains (losses) included in net income
Other than temporary credit impairment losses	(57,986		)	—			—
Realized gains (losses) on sales and settlements	13,761			—			(122		)
Net unrealized gains (losses) included in income	3,173			146,637			(89,766		)
Gains (losses) included in other comprehensive income
Total unrealized gains (losses) for the period	(644		)	—			—
Ending balance Level 3 assets	$	3,330,063		$	8,753,653		$	(6,941,097	)

There were no transfers to or from Level 3 for the quarter ended September 30, 2017. There were $6 million of IOs transferred to Level 3 and no transfers out from Level 3, during the nine months ended September 30, 2017. There were no transfers to or from Level 3 for the year ended December 31, 2016. The primary cause of the changes in fair value of the loans and the securitized debt are due to changes in credit risk of the portfolio.

The significant unobservable inputs used in the fair value measurement of the Company’s Non-Agency RMBS and securitized debt are the weighted average discount rates, constant prepayment speed (“CPR”), cumulative default rate, and the loss severity.

Constant Prepayment Rates

For securitized debt carried at fair value issued at a premium, as prepayment speeds increase, the amount of interest expense the Company recognizes decreases as the issued premium on the debt amortizes faster than expected. Conversely, decreases in prepayment speeds result in increased expense and can extend the period over which the Company amortizes the premium.

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For debt issued at a discount, as prepayment speeds increase, the amount of interest the Company expenses increases from the acceleration of the accretion of the discount into interest expense. Conversely, decreases in prepayment speeds result in decreased expense as the accretion of the discount into interest expense occurs over a longer period.

Constant Default Rates

Cumulative default rates represent an annualized rate of default on a group of mortgages. The constant default rate (“CDR”) represents the percentage of outstanding principal balances in the pool that are in default, which typically equates to the home being past 60-day and 90-day notices and in the foreclosure process. When default rates increase, expected cash flows on the underlying collateral decreases. When default rates decrease, expected cash flows on the underlying collateral increases.

Loss Severity

Loss severity rates reflect the amount of loss expected from a foreclosure and liquidation of the underlying collateral in the mortgage loan pool. When a mortgage loan is foreclosed the collateral is sold and the resulting proceeds are used to settle the outstanding obligation. In many circumstances, the proceeds from the sale do not fully repay the outstanding obligation. In these cases, a loss is incurred by the lender. Loss severity is used to predict how costly future losses are likely to be. An increase in loss severity results in a decrease in expected future cash flows. A decrease in loss severity results in an increase in expected future cash flows.

Discount Rate

The discount rate refers to the interest rate used in the discounted cash flow analysis to determine the present value of future cash flows. The discount rate takes into account not just the time value of money, but also the risk or uncertainty of future cash flows. An increased uncertainty of future cash flows results in a higher discount rate. The discount rate used to calculate the present value of the expected future cash flows is based on the discount rate implicit in the security as of the last measurement date. As discount rates move up, the discounted cash flows are reduced.

Sensitivity of Significant Inputs – Non-Agency RMBS and securitized debt, collateralized by loans held for investment

Prepayment speeds, as reflected by the CPR, vary according to interest rates, the type of financial instrument, conditions in financial markets, and other factors, none of which can be predicted with any certainty. In general, when interest rates rise, it is relatively less attractive for borrowers to refinance their mortgage loans, and as a result, prepayment speeds tend to decrease. When interest rates fall, prepayment speeds tend to increase. For RMBS investments purchased at a premium, as prepayment speeds increase, the amount of income the Company earns decreases as the purchase premium on the bonds amortizes faster than expected. Conversely, decreases in prepayment speeds result in increased income and can extend the period over which the Company amortizes the purchase premium. For RMBS investments purchased at a discount, as prepayment speeds increase, the amount of income the Company earns increases from the acceleration of the accretion of the discount into interest income. Conversely, decreases in prepayment speeds result in decreased income as the accretion of the purchase discount into interest income occurs over a longer period.

A summary of the significant inputs used to estimate the fair value of Non-Agency RMBS held for investment at fair value as of September 30, 2017 and December 31, 2016 follows:

	September 30, 2017				December 31, 2016
	Significant Inputs				Significant Inputs
	Weighted Average Discount Rate	CPR	CDR	Loss Severity	Weighted Average Discount Rate	CPR	CDR	Loss Severity
		Range				Range
Non-Agency RMBS
Senior	4.6%	1% -45%	0% -60%	35% -95%	5.4%	1% -35%	0% -22%	35% -95%
Senior interest-only	11.8%	4% -28%	0% -64%	35% -95%	12.5%	3% -30%	0% -22%	35% -95%
Subordinated	5.9%	1% -20%	0% -21%	35% -77%	6.2%	1% -25%	0% -18%	0% -79%
Subordinated interest-only	10.9%	10% -18%	0% -11%	35% -59%	13.2%	6% -15%	0% -11%	35% -76%

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A summary of the significant inputs used to estimate the fair value of securitized debt at fair value, collateralized by loans held for investment, as of September 30, 2017 and December 31, 2016 follows:

		September 30, 2017				December 31, 2016
		Significant Inputs				Significant Inputs
	Weighted Average Discount Rate	CPR Range	CDR Range	Loss Severity Range	Weighted Average Discount Rate	CPR Range	CDR Range	Loss Severity Range
Securitized debt at fair value, collateralized by loans held for investment	4.1%	1% - 22%	0% - 30%	35% - 70%	4.0%	1% - 35%	0% - 30%	35% - 65%

All of the significant inputs listed have some degree of market observability, based on the Company’s knowledge of the market, information available to market participants, and use of common market data sources. Collateral default and loss severity projections are in the form of “curves” that are updated quarterly to reflect the Company’s collateral cash flow projections. Methods used to develop these projections conform to industry conventions. The Company uses assumptions it considers its best estimate of future cash flows for each security.

Constant Prepayment Rates

The prepayment speed specifies the percentage of the collateral balance that is expected to prepay at each point in the future. The prepayment speed is based on factors such as collateral FICO score, loan-to-value ratio, debt-to-income ratio, and vintage on a loan level basis and is scaled up or down to reflect recent collateral-specific prepayment experience as obtained from remittance reports and market data services.

Constant Default Rates

Default vectors are determined from the current “pipeline” of loans that are more than 30 days delinquent, in foreclosure, bankruptcy, or are REO. These delinquent loans determine the first 30 months of the default curve. Beyond month 30, the default curve transitions to a value that is reflective of a portion of the current delinquency pipeline.

Loss Severity

The curve generated to reflect the Company’s expected loss severity is based on collateral-specific experience with consideration given to other mitigating collateral characteristics. Characteristics such as seasoning are taken into consideration because severities tend to initially increase on newly originated securities, before beginning to decline as the collateral ages and eventually stabilize. Collateral characteristics such as loan size, loan-to-value, and geographic location of collateral also effect loss severity.

Discount Rate

The discount rates applied to the expected cash flows to determine fair value are derived from a range of observable prices on securities backed by similar collateral. As the market becomes more or less liquid, the availability of these observable inputs will change.

Sensitivity of Significant Inputs – Loans held for investment

The Loans held for investment are comprised primarily of loans collateralized by seasoned subprime residential mortgages. Additionally, it includes non-conforming, single family, owner occupied, jumbo, prime residential mortgages. The significant unobservable inputs used to estimate the fair value of the Loans held for investment collateralized by seasoned subprime residential mortgage loans, as of September 30, 2017 and December 31, 2016 include coupon, FICO score at origination, loan-to-value ratios (LTV), owner occupancy status, and property type. A summary of the significant inputs used to estimate the fair value of Loans held for investment collateralized by seasoned subprime mortgages at fair value as of September 30, 2017 and December 31, 2016 follows:

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	September 30, 2017	December 31, 2016
Factor:
Coupon
Base Rate	4.7%	5.2%
Actual	7.0%	7.1%
FICO
Base Rate	634	632
Actual	626	621
Loan-to-value (LTV)
Base Rate	89%	87%
Actual	88%	88%
Loan Characteristics:
Occupancy
Owner Occupied	94%	97%
Investor	2%	2%
Secondary	4%	1%
Property Type
Single family	86%	86%
Manufactured housing	5%	6%
Multi-family/mixed use/other	9%	8%

The loan factors are generally not observable for the individual loans and the base rates developed by the Company’s internal model are subjective and change as market conditions change. The impact of the loan coupon on the value of the loan is dependent on whether the loan is clean or reperforming. A clean loan, with no history of delinquent payments and a relatively high loan interest rate would result in a higher overall value than a reperforming loan which has a history of delinquency. Similarly, a higher FICO score and a lower LTV ratio results in increases in the fair market value of the loan and a lower FICO score and a higher LTV ratio results in a lower value.

Property types also affect the overall loan values. Property types include single family, manufactured housing and multi-family/mixed use and other types of properties. Single family homes represent properties which house only one family unit. Manufactured homes include mobile homes and modular homes. Loan value for properties that are investor or secondary homes have a reduced value as compared to the baseline loan value. Additionally, single family homes will result in an increase to the loan value where manufactured and multi-family/mixed use and other properties will result in a decrease to the loan value, as compared to the baseline.

Financial instruments not carried at fair value

The following table presents the carrying value and fair value, as described above, of the Company’s financial instruments not carried at fair value on a recurring basis at September 30, 2017 and December 31, 2016.

	September 30, 2017
	(dollars in thousands)
	Level in Fair Value Hierarchy	Carrying Amount	Fair Value
Repurchase agreements	2	6,709,821	6,727,850
Securitized debt, collateralized by Non-Agency RMBS	3	233,113	221,567

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	December 31, 2016
	(dollars in thousands)
	Level in Fair Value Hierarchy	Carrying Amount	Fair Value
Repurchase agreements	2	5,600,903	5,619,385
Securitized debt, collateralized by Non-Agency RMBS	3	334,124	324,261

6. Repurchase Agreements

The interest rates of the Company’s repurchase agreements are generally indexed to the one-month, three-month and twelve-month LIBOR rates and re-price accordingly. The repurchase agreements outstanding, weighted average borrowing rates, weighted average remaining maturities, average daily balances and the fair value of collateral pledged as of September 30, 2017 and December 31, 2016 were:

	September 30, 2017			December 31, 2016
Repurchase agreements outstanding secured by:
Agency MBS (in thousands)	$	3,096,233		$	3,087,734
Non-agency MBS and Loans held for investment (in thousands)	3,613,588			2,513,169
Total:	$	6,709,821		$	5,600,903
Average balance of Repurchase agreements secured by:
Agency MBS (in thousands)	$	3,129,569		$	4,159,651
Non-agency MBS and Loans held for investment (in thousands)	2,983,319			2,322,683
Total:	$	6,112,888		$	6,482,334
Average borrowing rate of Repurchase agreements secured by:
Agency MBS	1.39		%	0.90		%
Non-agency MBS and Loans held for investment	3.25		%	3.05		%
Average remaining maturity of Repurchase agreements secured by:
Agency MBS	21 Days			32 Days
Non-agency MBS and Loans held for investment	73 Days			98 Days
Average original maturity of Repurchase agreements secured by:
Agency MBS	76 Days			112 Days
Non-agency MBS and Loans held for investment	109 Days			155 Days
MBS pledged as collateral at fair value on Repurchase agreements:
Agency MBS (in thousands)	$	3,332,640		$	3,334,245
Non-agency MBS and Loans held for investment (in thousands)	4,817,669			3,699,621
Total:	$	8,150,309		$	7,033,866

At September 30, 2017 and December 31, 2016, the repurchase agreements collateralized by MBS and Loans held for investment had the following remaining maturities.

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	September 30, 2017		December 31, 2016
	(dollars in thousands)
Overnight	$	—	$	—
1 to 29 days	3,777,160		2,947,604
30 to 59 days	1,591,370		958,956
60 to 89 days	330,186		407,625
90 to 119 days	28,798		559,533
Greater than or equal to 120 days	982,307		727,185
Total	$	6,709,821	$	5,600,903

At September 30, 2017, the Company had an amount at risk with Credit Suisse of 11% of its equity related to the collateral posted on repurchase agreements. As of September 30, 2017 the weighted average maturity of the repurchase agreements with Credit Suisse was 77 days and the amount at risk was $404 million. At December 31, 2016, the Company had an amount at risk with Nomura Securities Company Limited of 10% of its equity related to the collateral posted on repurchase agreements. As of December 31, 2016, the weighted average maturity of the repurchase agreements with Nomura Securities Company Limited was 104 days and the amount at risk was $320 million. There were no other amounts at risk with any other counterparties greater than 10% of the Company’s equity as of September 30, 2017 and December 31, 2016.

7. Securitized Debt

All of the Company’s securitized debt is collateralized by residential mortgage loans or Non-Agency RMBS. For financial reporting purposes, the Company’s securitized debt is accounted for as secured borrowings. Thus, the residential mortgage loans or RMBS held as collateral are recorded in the assets of the Company as Loans held for investment or Non-Agency RMBS and the securitized debt is recorded as a non-recourse liability in the accompanying Consolidated Statements of Financial Condition.

Securitized Debt Collateralized by Non-Agency RMBS

At September 30, 2017 and December 31, 2016 the Company’s securitized debt collateralized by Non-Agency RMBS is carried at amortized cost and had a principal balance of $247 million and $350 million, respectively. At September 30, 2017 and December 31, 2016, the debt carried a weighted average cost of financing equal to 5.88% and 5.21%, respectively. The debt matures between the years 2035 and 2047. None of the Company’s securitized debt collateralized by Non-Agency RMBS is callable.

During the quarter ended September 30, 2017, the Company acquired securitized debt collateralized by Non-Agency RMBS with an amortized cost balance of $166 thousand for $167 thousand. This transaction resulted in a net loss on the extinguishment of debt of $1 thousand, which is reflected in earnings for the quarter and nine months ended September 30, 2017.

During the quarter ended September 30, 2016, the Company acquired securitized debt collateralized by Non-Agency RMBS with an amortized cost balance of $4 million for $4 million. This transaction resulted in a net loss on the extinguishment of debt of $45 thousand. This loss is reflected in earnings for the quarter and nine months ended September 30, 2016.

The following table presents the estimated principal repayment schedule of the securitized debt collateralized by Non-Agency RMBS at September 30, 2017 and December 31, 2016, based on expected cash flows of the residential mortgage loans or RMBS, as adjusted for projected losses on the underlying collateral of the debt. All of the securitized debt recorded in the Company’s Consolidated Statements of Financial Condition is non-recourse to the Company.

	September 30, 2017		December 31, 2016
	(dollars in thousands)
Within One Year	$	62,165	$	98,565
One to Three Years	50,055		82,563
Three to Five Years	21,013		23,854
Greater Than Five Years	5,913		31,973
Total	$	139,146	$	236,955

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Maturities of the Company’s securitized debt collateralized by Non-Agency RMBS are dependent upon cash flows received from the underlying loans. The estimate of their repayment is based on scheduled principal payments on the underlying loans. This estimate will differ from actual amounts to the extent prepayments or loan losses are experienced. See Note 3 for a more detailed discussion of the securities collateralizing the securitized debt.

Securitized Debt Collateralized by Loans Held for Investment

At September 30, 2017 and December 31, 2016 the Company’s securitized debt collateralized by loans held for investment had a principal balance of $9.6 billion and $7.1 billion, respectively. At September 30, 2017 and December 31, 2016 the total securitized debt collateralized by loans held for investment carried a weighted average cost of financing equal to 4.14% and 3.99% respectively. The debt matures between the years 2021 and 2065.

The Company did not acquire any securitized debt collateralized by loans during the quarters ended September 30, 2017 and 2016. During the second quarter of 2017, the Company acquired securitized debt collateralized by loans with an amortized cost balance of $197 million for $245 million. This transaction resulted in a net loss on the extinguishment of debt of $48 million, which is reflected in earnings for the nine months ended September 30, 2017. As the Company's securitized debt is carried at fair value with changes in fair value reflected in earnings some of this loss was recognized during prior periods. During the first quarter of 2016, the Company acquired securitized debt collateralized by loans with an amortized cost balance of $44 million for $46 million. This transaction resulted in a net loss on the extinguishment of debt of $2 million. This loss is reflected in earnings for the nine months ended September 30, 2016.

The following table presents the estimated principal repayment schedule of the securitized debt collateralized by loans held for investment at September 30, 2017 and December 31, 2016, based on expected cash flows of the residential mortgage loans or RMBS, as adjusted for projected losses on the underlying collateral of the debt. All of the securitized debt recorded in the Company’s Consolidated Statements of Financial Condition is non-recourse to the Company.

	September 30, 2017		December 31, 2016
	(dollars in thousands)
Within One Year	$	1,856,397	$	1,151,519
One to Three Years	2,907,977		1,841,808
Three to Five Years	2,163,866		1,423,706
Greater Than Five Years	2,630,039		2,477,123
Total	$	9,558,279	$	6,894,156

Maturities of the Company’s securitized debt collateralized by loans held for investment are dependent upon cash flows received from the underlying loans. The estimate of their repayment is based on scheduled principal payments on the underlying loans. This estimate will differ from actual amounts to the extent prepayments or loan losses are experienced. See Note 4 for a more detailed discussion of the loans collateralizing the securitized debt.

Certain of the securitized debt collateralized by loans held for investment contain call provisions and are callable at par, at the option of the Company. The following table presents the par value of the callable debt by year at September 30, 2017. 

September 30, 2017
(dollars in thousands)
Year	Principal
2017	$	811,395
2018	1,002,614
2019	416,722
2020	4,232,520
2021	2,961,293
Total	$	9,424,544

8. Consolidated Securitization Vehicles and Other Variable Interest Entities

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Since its inception, the Company has utilized VIEs for the purpose of securitizing whole mortgage loans or re-securitizing RMBS and obtaining long-term, non-recourse financing. The Company evaluated its interest in each VIE to determine if it is the primary beneficiary.

As of September 30, 2017, the Company’s Consolidated Statement of Financial Condition includes assets of consolidated VIEs with a carrying value of $14.8 billion and liabilities with a carrying value of $10.0 billion. As of December 31, 2016, the Company’s Consolidated Statement of Financial Condition includes assets of consolidated VIEs with a carrying value of $10.8 billion of and liabilities with a carrying value of $7.3 billion.

During the nine months ended September 30, 2017, the Company acquired approximately $5.3 billion unpaid principal balance (excluding $550 million of loans held by a subsidiary of the Company) of seasoned residential subprime mortgage loans. The Company sold these loans to multiple real estate mortgage investment conduit trusts (the “Trusts”). The Company purchased certain subordinate notes and trust certificates of the Trusts. The Company evaluated the Trusts and determined that the total equity investment at risk is not sufficient to permit these trusts to finance its activities without additional subordinated financial support provided by another party. Therefore, the Company concluded that the Trusts were VIEs. The Company further determined that their interests in the Trusts gave the Company the power to direct the activity of these VIEs that most significantly impacted the Company's economic performance of the VIEs. As the Company concluded that it was the primary beneficiary of the Trusts, the Company consolidated the assets and liabilities of the Trusts. All intercompany balances and transactions are eliminated in consolidation.

The consolidation of these Trusts resulted in the addition of the following amounts, net of eliminations, at the time of acquisition.

	Consolidated Trusts
	(dollars in thousands)
Assets:
Loans held for investment, at fair value	$	5,353,955
Other Assets	36,795
Liabilities:
Securitized debt at fair value (1)	$	4,171,458

(1) After the elimination of intercompany balances.

As sponsor of the Trusts, the Company has retained an eligible horizontal retained interest consisting of the Class B and Class C

notes in the Trusts in order to satisfy the U.S. risk retention rules (the “Required Credit Risk”). The U.S. risk retention rules impose limitations on the ability of the Company to dispose of or hedge the Required Credit Risk until the later of (i) the fifth

anniversary of the closing date of the securitization transactions (the “Closing Date”) and (ii) the date on which the aggregate unpaid principal balance of the mortgage loans has been reduced to 25% of the aggregate unpaid principal balance of the mortgage loans as of the Closing Date, but in any event no longer than the seventh anniversary of the Closing Date. These investments have been eliminated in consolidation of the Trusts as of September 30, 2017.

VIEs for Which the Company is the Primary Beneficiary

The retained beneficial interests in VIEs for which the Company is the primary beneficiary are typically the subordinated tranches of these re-securitizations and in some cases the Company may hold interests in additional tranches. The table below reflects the assets and liabilities recorded in the Consolidated Statements of Financial Condition related to the consolidated VIEs as of September 30, 2017 and December 31, 2016.

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	September 30, 2017		December 31, 2016
	(dollars in thousands)
Assets:
Non-Agency RMBS, at fair value	$	1,646,762	$	1,842,080
Loans held for investment, at fair value	13,011,319		8,753,653
Accrued interest receivable	76,327		57,153
Other assets	112,572		109,068
Liabilities:
Securitized debt, collateralized by Non-Agency RMBS	$	233,113	$	334,124
Securitized debt at fair value, collateralized by loans held for investment	9,683,062		6,941,097
Accrued interest payable	34,650		24,942
Other liabilities	3,612		2,742

Income, OTTI and expense amounts related to consolidated VIEs recorded in the Consolidated Statements of Operations is presented in the tables below.

	For the Quarters Ended
	September 30, 2017			September 30, 2016
	(dollars in thousands)
Interest income, Assets of consolidated VIEs	$	241,195		$	195,488
Interest expense, Non-recourse liabilities of VIEs	101,856			70,715
Net interest income	$	139,339		$	124,773
Total other-than-temporary impairment losses	$	(668	)	$	(21	)
Portion of loss recognized in other comprehensive income (loss)	(10,108		)	(4,599		)
Net other-than-temporary credit impairment losses	$	(10,776	)	$	(4,620	)
Servicing fees	$	10,492		$	9,788

	For the Nine Months Ended
	September 30, 2017			September 30, 2016
	(dollars in thousands)
Interest income, Assets of consolidated VIEs	$	668,621		$	488,353
Interest expense, Non-recourse liabilities of VIEs	290,264			168,738
Net interest income	$	378,357		$	319,615
Total other-than-temporary impairment losses	$	(1,777	)	$	(866	)
Portion of loss recognized in other comprehensive income (loss)	(35,720		)	(31,925		)
Net other-than-temporary credit impairment losses	$	(37,497	)	$	(32,791	)
Servicing fees	$	30,970		$	23,139

VIEs for Which the Company is Not the Primary Beneficiary

The Company is not required to consolidate VIEs in which it has concluded it does not have a controlling financial interest, and thus is not the primary beneficiary. In such cases, the Company does not have both the power to direct the entities’ most significant activities and the obligation to absorb losses or right to receive benefits that could potentially be significant to the VIEs. The Company’s investments in these unconsolidated VIEs are carried in Non-Agency RMBS on the Consolidated Statements of Financial Condition and include senior and subordinated bonds issued by the VIEs. The fair value of the Company’s investments in each unconsolidated VIEs at September 30, 2017, ranged from less than $1 million to $51 million,

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with an aggregate amount of $1.3 billion. The fair value of the Company’s investments in each unconsolidated VIEs at December 31, 2016, ranged from less than $1 million to $51 million, with an aggregate amount of $1.5 billion. The Company’s maximum exposure to loss from these unconsolidated VIEs was $1.2 billion and $1.4 billion at September 30, 2017 and December 31, 2016, respectively. The maximum exposure to loss was determined as the amortized cost of the unconsolidated VIE, which represents the purchase price of the investment adjusted by any unamortized premiums or discounts as of the reporting date.

9. Derivative Instruments

In connection with the Company’s interest rate risk management strategy, the Company economically hedges a portion of its interest rate risk by entering into derivative financial instrument contracts in the form of interest rate swaps, swaptions, and Treasury futures. The Company’s swaps are used to lock in a fixed rate related to a portion of its current and anticipated payments on its repurchase agreements. The Company typically agrees to pay a fixed rate of interest (“pay rate”) in exchange for the right to receive a floating rate of interest (“receive rate”) over a specified period of time. Treasury futures are derivatives which track the prices of specific Treasury securities and are traded on an active exchange. It is generally the Company’s policy to close out any Treasury futures positions prior to taking delivery of the underlying security. The Company uses Treasury futures to lock in a fixed rate related to a portion of its current and anticipated payments on its repurchase agreements.

The use of derivatives creates exposure to credit risk relating to potential losses that could be recognized if the counterparties to these instruments fail to perform their obligations under the contracts. In the event of a default by the counterparty, the Company could have difficulty obtaining its RMBS or cash pledged as collateral for these derivative instruments. The Company periodically monitors the credit profiles of its counterparties to determine if it is exposed to counterparty credit risk. See Note 14 for further discussion of counterparty credit risk.

The table below summarizes the location and fair value of the derivatives reported in the Consolidated Statements of Financial Condition after counterparty netting and posting of cash collateral as of September 30, 2017 and December 31, 2016.

			September 30, 2017
			Derivative Assets			Derivative Liabilities
Derivative Instruments	Notional Amount Outstanding		Location on Consolidated Statements of Financial Condition	Net Estimated Fair Value/Carrying Value		Location on Consolidated Statements of Financial Condition	Net Estimated Fair Value/Carrying Value
			(dollars in thousands)
Interest Rate Swaps	$	3,373,400	Derivatives, at fair value, net	$	15,254	Derivatives, at fair value, net	$	—
Swaptions	482,000		Derivatives, at fair value, net	2,407		Derivatives, at fair value, net	(1,204		)
Treasury Futures	619,700		Derivatives, at fair value, net	4,864		Derivatives, at fair value, net	—
Total	$	4,475,100		$	22,525		$	(1,204	)

			December 31, 2016
			Derivative Assets			Derivative Liabilities
Derivative Instruments	Notional Amount Outstanding		Location on Consolidated Statements of Financial Condition	Net Estimated Fair Value/Carrying Value		Location on Consolidated Statements of Financial Condition	Net Estimated Fair Value/Carrying Value
			(dollars in thousands)
Interest Rate Swaps	$	1,396,900	Derivatives, at fair value, net	$	—	Derivatives, at fair value, net	$	—
Swaptions	624,000		Derivatives, at fair value, net	7,892		Derivatives, at fair value, net	(2,350		)
Treasury Futures	619,700		Derivatives, at fair value, net	1,785		Derivatives, at fair value, net	—
Total	$	2,640,600		$	9,677		$	(2,350	)

The effect of the Company’s derivatives on the Consolidated Statements of Operations is presented below.

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		Net gains (losses) on derivatives For the Quarters Ended
Derivative Instruments	Location on Consolidated Statements of Operations and Comprehensive Income	September 30, 2017			September 30, 2016
		(dollars in thousands)
Interest Rate Swaps	Net unrealized gains (losses) on derivatives	$	5,001		$	13,395
Interest Rate Swaps	Net realized gains (losses) on derivatives	(3,491		)	(4,595		)
Treasury Futures	Net unrealized gains (losses) on derivatives	3,467			12,149
Treasury Futures	Net realized gains (losses) on derivatives	(3,267		)	(7,823		)
Swaptions	Net unrealized gains (losses) on derivatives	736			2,084
Swaptions	Net realized gains (losses) on derivatives	(1,083		)	(1,850		)
Other Derivative Assets	Net unrealized gains (losses) on derivatives	—			—
Other Derivative Assets	Net realized gains (losses) on derivatives	—			—
Total		$	1,363		$	13,360

		Net gains (losses) on derivatives For the Nine Months Ended
Derivative Instruments	Location on Consolidated Statements of Operations and Comprehensive Income	September 30, 2017			September 30, 2016
		(dollars in thousands)
Interest Rate Swaps	Net unrealized gains (losses) on derivatives	$	15,694		$	(36,840	)
Interest Rate Swaps	Net realized gains (losses) on derivatives (1)	(27,222		)	(84,571		)
Treasury Futures	Net unrealized gains (losses) on derivatives	3,079			(4,259		)
Treasury Futures	Net realized gains (losses) on derivatives	(12,268		)	(28,797		)
Swaptions	Net unrealized gains (losses) on derivatives	1,129			(10,283		)
Swaptions	Net realized gains (losses) on derivatives	(5,333		)	(5,615		)
Other Derivative Assets	Net unrealized gains (losses) on derivatives	—			—
Other Derivative Assets	Net realized gains (losses) on derivatives	—			(567		)
Total		$	(24,921	)	$	(170,932	)

(1) Includes loss on termination of interest rate swap of $16 million and $61 million for the nine months ended September 30, 2017and 2016, respectively.

There were no swap terminations for the quarters ended September 30, 2017 and 2016. The Company paid $16 million to terminate interest rate swaps with a notional value of $250 million during the nine months ended September 30, 2017. The terminated swaps had original maturities ranging from 2024 to 2034. The Company paid $61 million to terminate interest rate swaps with a notional value of $3.3 billion during the nine months ended September 30, 2016. The terminated swaps had original maturities ranging from 2017 to 2034. These amounts represented the fair value of the terminated interest rate swaps, not counting any accrued interest at the time of settlement.

The weighted average pay rate on the Company’s interest rate swaps at September 30, 2017 was 1.71% and the weighted average receive rate was 1.39%. The weighted average pay rate on the Company’s interest rate swaps at December 31, 2016 was 2.13% and the weighted average receive rate was 0.90%. The weighted average maturity on the Company’s interest rate swaps at September 30, 2017 and December 31, 2016 was 5 years and 8 years, respectively.

Certain of the Company’s derivative contracts are subject to International Swaps and Derivatives Association Master Agreements or other similar agreements which may contain provisions that grant counterparties certain rights with respect to the applicable agreement upon the occurrence of certain events such as (i) a decline in stockholders’ equity in excess of specified thresholds or dollar amounts over set periods of time, (ii) the Company’s failure to maintain its REIT status, (iii) the Company’s failure to comply with limits on the amount of leverage, and (iv) the Company’s stock being delisted from the New York Stock Exchange (NYSE). Upon the occurrence of any one of items (i) through (iv), or another default under the agreement, the counterparty to the applicable agreement has a right to terminate the agreement in accordance with its provisions. Certain of the Company’s interest rate swaps are cleared through a registered commodities exchange. Each of the Company’s ISDAs and clearing exchange agreements contains provisions under which the Company is required to fully collateralize its obligations under the interest rate swap agreements if at any point the fair value of the swap represents a liability greater than the minimum transfer amount contained within the agreements. The Company is also required to post

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initial collateral upon execution of certain of its swap transactions. If the Company breaches any of these provisions, it will be required to settle its obligations under the agreements at their termination values, which approximates fair value. The Company uses clearing exchange market prices to determine the fair value of its interest rate swaps. The aggregate fair value of all derivative instruments with credit-risk-related contingent features that are in a net asset position at September 30, 2017 is approximately $6 million including accrued interest, which represents the maximum amount the Company would receive upon termination, which is fully collateralized.

10. Capital Stock

Preferred Stock

In February 2017, the Company issued 13,000,000 shares of 8.00% Series B Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, par value $0.01 per share (the “Series B Preferred Stock”), at a public offering price of $25.00 per share. The Series B Preferred Stock is redeemable at $25.00 per share plus accrued and unpaid dividends (whether or not authorized or declared) exclusively at the Company’s option commencing in March 30, 2024, subject to the Company’s right, under limited circumstances, to redeem the Series B Preferred Stock prior to that date. The initial dividend rate for the Series B Preferred Stock, from and including February 27, 2017, to but not including March 30, 2024, will be equal to 8.00% per annum of the $25.00 liquidation preference per share (equivalent to the fixed annual rate of $2.00 per share). On and after March 30, 2024, dividends on the Series B Preferred Stock will accumulate at a percentage of the $25.00 liquidation preference equal to an annual floating rate of the three-month LIBOR plus a spread of 5.791% per annum. The Series B Preferred Stock is entitled to receive, when and as declared, a dividend at a rate of 8.0% per year on the $25.00 liquidation preference before the common stock is paid any dividends and is senior to the common stock with respect to distributions upon liquidation, dissolution or winding up. This transaction was completed in February 2017, pursuant to which the Company received proceeds, net of offering costs, of $314 million.

The Company declared dividends to Series B preferred stockholders of $7 million and $15 million, or $0.50 and $1.18 per preferred share during the quarter and nine months ended September 30, 2017.

In October 2016, the Company issued 5,800,000 shares of 8.00% Series A Cumulative Redeemable Preferred Stock, par value $0.01 per share (the “Series A Preferred Stock”), at a public offering price of $25.00 per share. The Series A Preferred Stock is redeemable at $25.00 per share plus accrued and unpaid dividends (whether or not authorized or declared) exclusively at the Company’s option commencing in October 30, 2021, subject to the Company’s right, under limited circumstances, to redeem the Series A Preferred Stock prior to that date. The Series A Preferred Stock is entitled to receive, when and as declared, a dividend at a rate of 8.0% per year on the $25.00 liquidation preference before the common stock is paid any dividends and is senior to the common stock with respect to distributions upon liquidation, dissolution or winding up. This transaction was completed in October 2016, pursuant to which the Company received proceeds, net of offering costs, of $140 million.

The Company declared dividends to Series A preferred stockholders of $3 million and $9 million, or $0.50 and $1.50 per preferred share during the quarter and nine months ended September 30, 2017.

Common Stock

Our Board of Directors adopted a program that authorizes repurchases of our common stock up to $350 million. Shares of our common stock may be purchased in the open market, including through block purchases, through privately negotiated transactions, or pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.  The timing, manner, price and amount of any repurchases will be determined at our discretion and the program may be suspended, terminated or modified at any time for any reason.  Among other factors, the Company intends to only consider repurchasing shares of our common stock when the purchase price is less than its estimate of its current net asset value per common share. Generally, when the Company repurchases its common stock at a discount to its net asset value, the net asset value of its remaining shares of common stock outstanding increases. In addition, the Company does not intend to repurchase any shares from directors, officers or other affiliates. The program does not obligate the Company to acquire any specific number of shares, and all repurchases will be made in accordance with Rule 10b-18, which sets certain restrictions on the method, timing, price and volume of stock repurchases.

The Company did not repurchase any shares during the quarter and nine months ended September 30, 2017, and has $100 million in its share repurchase program that may be used to repurchase shares in the future.

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During the quarters and nine months ended September 30, 2017, the Company declared regular dividends to common shareholders of $0.50 and $1.50 per share or $94 million and $282 million, respectively. During the quarters and nine months ended September 30, 2016, the Company declared regular dividends to common shareholders of $0.48 and $1.44 per share or$91 million and $271 million, respectively, and a special dividend of $0.50 per share to common shareholders of $94 million.

Earnings per share for the quarters and nine months ended September 30, 2017, and 2016, respectively, are computed as follows:

	For the Quarters Ended
	September 30, 2017		September 30, 2016
	(dollars in thousands)
Numerator:
Net income available to common shareholders	$	129,832	$	172,817
Effect of dilutive securities:	—		—
Dilutive net income available to common shareholders	$	129,832	$	172,817
Denominator:
Weighted average basic shares	187,779,794		187,729,765
Effect of dilutive securities	412,317		190,027
Weighted average dilutive shares	188,192,111		187,919,792
Net income per average share attributable to common stockholders - Basic	$	0.69	$	0.92
Net income per average share attributable to common stockholders - Diluted	$	0.69	$	0.92

	For the Nine Months Ended
	September 30, 2017		September 30, 2016
	(dollars in thousands)
Numerator:
Net income available to common shareholders	$	392,977	$	330,042
Effect of dilutive securities:	—		—
Dilutive net income available to common shareholders	$	392,977	$	330,042
Denominator:
Weighted average basic shares	187,773,715		187,727,667
Effect of dilutive securities	403,042		190,027
Weighted average dilutive shares	188,176,757		187,917,694
Net income per average share attributable to common stockholders - Basic	$	2.09	$	1.76
Net income per average share attributable to common stockholders - Diluted	$	2.09	$	1.76

11. Accumulated Other Comprehensive Income

The following table presents the changes in the components of Accumulated Other Comprehensive Income (“AOCI”) for the nine months ended September 30, 2017 and 2016:

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	September 30, 2017
	(dollars in thousands)
	Unrealized gains (losses) on available-for-sale securities, net		Total Accumulated OCI Balance
Balance as of December 31, 2016	$	718,106	$	718,106
OCI before reclassifications	59,114		59,114
Amounts reclassified from AOCI	35,898		35,898
Net current period OCI	95,012		95,012
Balance as of September 30, 2017	$	813,118	$	813,118

	September 30, 2016
	(dollars in thousands)
	Unrealized gains (losses) on available-for-sale securities, net		Total Accumulated OCI Balance
Balance as of December 31, 2015	$	773,791	$	773,791
OCI before reclassifications	94,059		94,059
Amounts reclassified from AOCI	29,853		29,853
Net current period OCI	123,912		123,912
Balance as of September 30, 2016	$	897,703	$	897,703

The following table presents the details of the reclassifications from AOCI for the nine months ended September 30, 2017 and 2016:

	September 30, 2017			September 30, 2016
Details about Accumulated OCI Components	Amounts Reclassified from Accumulated OCI			Amounts Reclassified from Accumulated OCI			Affected Line on the Consolidated Statements Of Operations
Unrealized gains and losses on available-for-sale securities
	$	7,778		$	13,354		Net realized gains (losses) on sales of investments
	(43,676		)	(43,207		)	Net other-than-temporary credit impairment losses
	$	(35,898	)	$	(29,853	)	Income before income taxes
	—			—			Income taxes
	$	(35,898	)	$	(29,853	)	Net of tax

12. Equity Compensation, Employment Agreements and other Benefit Plans

In accordance with the terms of the Company’s 2007 Equity Incentive Plan (as amended and restated on December 10, 2015) (the “Incentive Plan”), directors, officers and employees of the Company are eligible to receive restricted stock grants. These awards generally have a restriction period lasting between two and ten years depending on the award, after which time the awards fully vest. During the vesting period, these shares may not be sold. There were approximately 6 million shares available for future grants under the Incentive Plan as of September 30, 2017.

During the first quarter of 2016, the Compensation Committee of the Board of Directors of the Company approved a Stock Award Deferral Program (the “Deferral Program”). Under the Deferral Program, non-employee directors and certain executive officers can elect to defer payment of certain stock awards made pursuant to the Equity Plan. Deferred awards are treated as deferred stock units and paid at the earlier of separation from service or a date elected by the participant. Payments are generally made in a lump sum or, if elected by the participant, in five annual installments. Deferred awards receive dividend

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equivalents during the deferral period in the form of additional deferred stock units. Amounts are paid at the end of the deferral period by delivery of shares from the Incentive Plan (plus cash for any fractional deferred stock units), less any applicable tax withholdings. Deferral elections do not alter any vesting requirements applicable to the underlying stock award.

During the first quarter of 2017 and 2016, the Company granted certain of its employees Restricted Stock Units (“RSU”) awards.  RSU awards are designed to reward certain employees of the Company for services provided over the previous year.  The RSU awards vest equally over a three year period beginning one year from the grant date and will fully vest after three years. The RSU awards are valued at the market price of the Company’s common stock on the grant date and the employees must be employed by the Company on the vesting dates to receive the RSU awards. The Company granted 112 thousand and 266 thousand RSU awards during the first quarter of 2017 and 2016, with a grant date fair value of $2 million and $3 million, respectively, which will be recognized as compensation expense on a straight-line basis over the three year vesting period.

During the first quarter of 2017 and 2016, the Company granted certain of its employees 144 thousand and 180 thousand Performance Share Units (“PSU”) awards, respectively.  PSU awards are designed to align compensation with the Company’s future performance.  The PSU awards include a three year performance period ending on December 31, 2019 and December 31, 2018, respectively.  The final number of shares that will vest will be between 0% to 150% of the total PSU awards granted based on the stock performance of the Company as compared to an index of comparable financial institutions and will cliff vest at the end of the performance period.  The PSU awards are measured at fair value on the grant date which will be recognized as compensation expense ratably over the three year vesting period.  Fair value is determined using a Monte Carlo valuation model developed to value the specific features of the PSU awards, including market based conditions. Inputs into the model include the Company’s historical volatility, the peer average historical volatility, and the correlation coefficient of the volatility.  In addition, inputs also included the share price at the beginning of the measurement period and an estimated total shareholder return for both the Company and the peer group of comparable financial institutions.  Based on the model results, the 144 thousand PSU awards granted during 2017 had a grant date value of $3 million that will cliff vest on December 31, 2019. The 180 thousand PSU awards granted during 2016 had a grant date value of $3 million which will cliff vest on December 31, 2018.

The Company recognized stock based compensation expenses of $1 million and $620 thousand for the quarters ended September 30, 2017, and 2016, respectively. For the nine months ended September 30, 2017, and 2016, the stock based compensation expenses were $3 million and $1 million, respectively.

The Company also maintains a qualified 401(k) plan.  The plan is a retirement savings plan that allows eligible employees to contribute a portion of their wages on a tax-deferred basis under Section 401(k) of the Code. Employees may contribute, through payroll deductions, up to $18,000 if under the age of 50 years and an additional $6,000 “catch-up” contribution for employees 50 years or older. The Company matches 100% of the first 6% of the eligible compensation deferred by employee contributions. The employer funds the 401(k) matching contributions in the form of cash, and participants may direct the Company match to an investment of their choice. The benefit of the Company’s contributions vests immediately. Generally, a participating employee is entitled to distributions from the plans upon termination of employment, retirement, death or disability. The 401(k) expense related to the Company’s qualified plan for the quarters ended September 30, 2017 and 2016 was $84 thousand and $78 thousand, respectively. For the nine months ended September 30, 2017 and 2016, the 401(k) expense related to the Company's qualified plan was $299 thousand and $292 thousand, respectively.

13. Income Taxes

For the quarter ended September 30, 2017 and the year ended December 31, 2016, the Company qualified to be taxed as a REIT under Code Sections 856 through 860. As a REIT, the Company is not subject to federal income tax to the extent that it makes qualifying distributions of taxable income to its stockholders. To maintain qualification as a REIT, the Company must distribute at least 90% of its annual REIT taxable income to its shareholders and meet certain other requirements such as assets it may hold, income it may generate and its shareholder composition. It is generally the Company’s policy to distribute to its shareholders all of the Company’s taxable income.

The state and local tax jurisdictions to which the Company is subject to tax-filing obligations, recognize the Company’s status as a REIT, and therefore, the Company generally does not pay income tax in such jurisdictions. The Company may, however, be subject to certain minimum state and local tax filing fees and its TRSs are subject to federal, state and local taxes. There were no significant income tax expenses for the nine months ended September 30, 2017 and year ended December 31, 2016.

In general, cash dividends declared by the Company will be considered ordinary income to stockholders for income tax purposes. From time to time, a portion of the Company’s dividends may be characterized as capital gains or return of capital distributions.

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The Company’s effective tax rate differs from its combined federal, state and city corporate statutory tax rate primarily due to the deduction of dividend distributions required to be paid under Code Section 857(a).

The Company’s 2016, 2015 and 2014 federal, state and local tax returns remain open for examination.

14. Credit Risk and Interest Rate Risk

The Company’s primary components of market risk are credit risk and interest rate risk. The Company is subject to interest rate risk in connection with its investments in Agency MBS and Non-Agency RMBS, residential mortgage loans, borrowings under repurchase agreements and securitized debt. When the Company assumes interest rate risk, it attempts to minimize interest rate risk through asset selection, hedging and matching the income earned on mortgage assets with the cost of related liabilities.

The Company attempts to minimize credit risk through due diligence and asset selection by purchasing loans underwritten to agreed-upon specifications of selected originators as well as on-going portfolio monitoring. The Company has established a whole loan target market including prime and subprime borrowers, Alt-A documentation, geographic diversification, owner-occupied property, and moderate loan-to-value ratios. These factors are considered to be important indicators of credit risk.

By using derivative instruments and repurchase agreements, the Company is exposed to counterparty credit risk if counterparties to the contracts do not perform as expected. If a counterparty fails to perform on a derivative hedging instrument, the Company’s counterparty credit risk is equal to the amount reported as a derivative asset on its balance sheet to the extent that amount exceeds collateral obtained from the counterparty or, if in a net liability position, the extent to which collateral posted exceeds the liability to the counterparty. The amounts reported as a derivative asset/(liability) are derivative contracts in a gain/(loss) position, and to the extent subject to master netting arrangements, net of derivatives in a loss/(gain) position with the same counterparty and collateral received/(pledged). If the counterparty fails to perform on a repurchase agreement, the Company is exposed to a loss to the extent that the fair value of collateral pledged exceeds the liability to the counterparty. The Company attempts to minimize counterparty credit risk by evaluating and monitoring the counterparty’s credit, executing master netting arrangements and obtaining collateral, and executing contracts and agreements with multiple counterparties to reduce exposure to a single counterparty.

Our repurchase agreements and derivative transactions are governed by underlying agreements that provide for a right of setoff under master netting arrangements, including in the event of default or in the event of bankruptcy of either party to the transactions. The Company presents its assets and liabilities subject to such arrangements on a net basis in our consolidated statements of financial condition. The following table presents information about our liabilities that are subject to such arrangements and can potentially be offset on our consolidated statements of financial condition as of September 30, 2017 and December 31, 2016.

	September 30, 2017
	(dollars in thousands)
	Gross Amounts of Recognized  Assets (Liabilities)			Gross Amounts Offset in the Consolidated Statements of Financial Position			Net Amounts Offset in the Consolidated Statements of Financial Position			Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position
										Financial Instruments		Cash Collateral (Received) Pledged (1)		Net Amount
Repurchase Agreements	$	(6,709,821	)	$	—		$	(6,709,821	)	$	8,150,308	$	1,986	$	1,442,473
Interest Rate Swaps - Gross Assets	20,364			(5,110		)	15,254			—		46,339		61,593
Interest Rate Swaps - Gross Liabilities	(5,110		)	5,110			—			—		—		—
Treasury Futures - Gross Assets	4,864			—			4,864			—		997		5,861
Treasury Futures - Gross Liabilities	—			—			—			—		—		—
Swaptions - Gross Assets	2,407			—			2,407			—		—		2,407
Swaptions - Gross Liabilities	(1,204		)	—			(1,204		)	1,279		—		75
Total Liabilities	$	(6,688,500	)	$	—		$	(6,688,500	)	$	8,151,587	$	49,322	$	1,512,409

(1) Included in other assets

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	December 31, 2016
	(dollars in thousands)
	Gross Amounts of Recognized  Assets (Liabilities)			Gross Amounts Offset in the Consolidated Statements of Financial Position			Net Amounts Offset in the Consolidated Statements of Financial Position			Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position
										Financial Instruments		Cash Collateral (Received) Pledged (1)		Net Amount
Repurchase Agreements	$	(5,600,903	)	$	—		$	(5,600,903	)	$	7,033,866	$	2,545	$	1,435,508
Interest Rate Swaps - Gross Assets	14,435			(14,435		)	—			—		—		—
Interest Rate Swaps - Gross Liabilities	(14,875		)	14,875			—			—		39,627		39,627
Treasury Futures - Gross Assets	1,785			—			1,785			—		3,320		5,105
Treasury Futures - Gross Liabilities	—			—			—			—		—		—
Swaptions - Gross Assets	7,892			—			7,892			—		—		7,892
Swaptions - Gross Liabilities	(2,350		)	—			(2,350		)	10,341		—		7,991
Total Liabilities	$	(5,594,016	)	$	440		$	(5,593,576	)	$	7,044,207	$	45,492	$	1,496,123

(1) Included in other assets

15. Commitments and Contingencies

From time to time, the Company may become involved in various claims and legal actions arising in the ordinary course of business. In connection with certain re-securitization transactions engaged in by the Company, it has the obligation under certain circumstances to repurchase assets from the VIE upon breach of certain representations and warranties.

16. Subsequent Events

Subsequent to September 30, 2017, $811 million of securitized debt issued by the Company was retired and new securitized debt was issued.

Item 2.Management's Discussion and Analysis of Financial Condition and Results of Operations

The following discussion of the Company’s (“we” or “our”) financial condition and results of operations should be read in conjunction with the consolidated financial statements and notes to those statements included in Item 1 of this quarterly report on Form 10-Q.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

We make forward-looking statements in this report that are subject to risks and uncertainties. These forward-looking statements include information about possible or assumed future results of our business, financial condition, liquidity, results of operations, plans and objectives. When we use the words ‘‘believe,’’ ‘‘expect,’’ ‘‘anticipate,’’ ‘‘estimate,’’ ‘‘plan,’’ ‘‘continue,’’ ‘‘intend,’’ ‘‘should,’’ ‘‘may,’’ ‘‘would,’’ ‘‘will’’ or similar expressions, we intend to identify forward-looking statements. Statements regarding the following subjects, among others, are forward-looking by their nature:

• our business and investment strategy;

• availability of investment opportunities in real estate-related and other securities;

• our expected investments;

• changes in the value of our investments;

• changes in interest rates and mortgage prepayment rates;

• prepayments of the mortgage and other loans underlying our mortgage-backed securities, or RMBS, or other asset-backed securities, or ABS;

• rates of default, delinquencies or decreased recovery rates on our investments;

• general volatility of the securities markets in which we invest;

• our ability to maintain existing financing arrangements and our ability to obtain future financing arrangements;

• interest rate mismatches between our investments and our borrowings used to finance such purchases;

• effects of interest rate caps on our adjustable-rate investments;

• the degree to which our hedging strategies may or may not protect us from interest rate volatility;

• the impact of and changes to various government programs;

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• impact of and changes in governmental regulations, tax law and rates, accounting guidance, and similar matters;

• market trends in our industry, interest rates, the debt securities markets or the general economy;

• estimates relating to our ability to make distributions to our stockholders in the future;

• our understanding of our competition;

• our transition from an externally-managed real estate investment trust, or REIT, to an internally-managed REIT;

• availability of qualified personnel;

• our ability to maintain our classification as a REIT for federal income tax purposes;

• our ability to maintain our exemption from registration under the Investment Company Act of 1940, as amended, or 1940 Act;

• our expectations regarding materiality or significance; and

• the effectiveness of our disclosure controls and procedures.

The forward-looking statements are based on our beliefs, assumptions and expectations of our future performance, taking into account all information currently available to us. You should not place undue reliance on these forward-looking statements. These beliefs, assumptions and expectations can change as a result of many possible events or factors, not all of which are known to us. Some of these factors are described under the caption ‘‘Risk Factors’’ in our Form 10-K for fiscal year ended December 31, 2016. If a change occurs, our business, financial condition, liquidity and results of operations may vary materially from those expressed in our forward-looking statements. Any forward-looking statement speaks only as of the date on which it is made. New risks and uncertainties arise from time to time, and it is impossible for us to predict those events or how they may affect us. Except as required by law, we are not obligated to, and do not intend to, update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Executive Summary

We are an internally managed REIT engaged in the business of investing, on a leveraged basis, in a diversified portfolio of mortgage assets, including Agency RMBS, Non-Agency RMBS, Agency CMBS, residential mortgage loans, and real estate related securities.  Our principal business objective is to deliver shareholder value through the generation of distributable income and through asset performance linked to residential mortgage credit fundamentals. We selectively invest in residential mortgage assets with a focus on credit analysis, projected prepayment rates, interest rate sensitivity and expected return.

We focus our investment activities primarily on acquiring Non-Agency and Agency residential and commercial mortgage-backed securities, or MBS, and on acquiring residential mortgage loans. At September 30, 2017, based on the amortized cost balance of our interest earning assets, approximately 22% of our investment portfolio was Agency MBS, 11% of our investment portfolio was Non-Agency RMBS, and 67% of our investment portfolio was residential mortgage loans, respectively. At December 31, 2016, based on the amortized cost balance of our interest earning assets, approximately 28% of our investment portfolio was Agency MBS, 16% of our investment portfolio was Non-Agency RMBS, and 56% of our investment portfolio was residential mortgage loans, respectively.

Our investment strategy is intended to take advantage of opportunities in the current interest rate and credit environment. We expect to adjust our strategy to changing market conditions by shifting our asset allocations across these various asset classes as interest rate and credit cycles change over time. We believe that our strategy will enable us to pay dividends and achieve capital appreciation throughout changing market cycles. We expect to take a long-term view of assets and liabilities, and our reported earnings and estimates of the fair value of our investments at the end of a financial reporting period will not significantly impact our objective of providing attractive risk-adjusted returns to our stockholders over the long-term.

We use leverage to increase returns and to finance the acquisition of our assets. Our income is generated primarily by the difference, or net spread, between the income we earn on our assets and the cost of our borrowings. We expect to finance our investments using a variety of financing sources including, when available, repurchase agreements, warehouse facilities and securitizations and offerings of our securities. We may manage our debt and interest rate risk by utilizing interest rate hedges, such as interest rate swaps, caps, options and futures to reduce the effect of interest rate fluctuations related to our financing sources.

Under the U.S. credit risk retention rules that became effective on December 24, 2015, we have committed to consolidate the loans for deals which we sponsor and retain a meaningful investment for a minimum of five years. Our credit investments are also structurally locked out from pre-payments resulting in a high yielding longer duration credit portfolio.

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Market Conditions and our Strategy

There are several key factors that impact the financial results of the Company including the interest rate environment and

changes in LIBOR rates, U.S. unemployment rates and residential home prices, as well as residential mortgage origination and

refinance activity. The interest rate environment is sensitive to actual and anticipated US Federal Reserve actions, availability of

adequate and efficient financing sources, rate volatility as well as other market factors. We have operated over the past several

years and continue to operate in a volatile interest rate environment.

Equity markets continued to exhibit strength in the third quarter with low volatility and the ability to shrug off global, domestic and political issues. The US 10-year Treasury was volatile during the third quarter. The US 10-year Treasury was 2.30% on June 30, 2017 and fell to a low of 2.04% in early September before spiking to 2.32% at quarter end. While, one-month LIBOR ("London Interbank Offered Rate") was essentially flat during the third quarter, three-month, six-month and twelve-month LIBOR increased a few basis points.

In August 2017, Hurricane Harvey made landfall in the States of Texas and Louisiana, and in September 2017, Hurricane Irma made landfall in the State of Florida, in each case causing extensive flooding and other heavy damage in certain parts of such states, as well as in parts of Georgia and South Carolina.  The servicers of our securitized mortgage loans are in the process of assessing and inspecting properties in those areas. Our securitized mortgage loans located in the areas affected by Hurricane Harvey or Hurricane Irma may be more likely to become delinquent, especially if the related mortgagors are unable to live in their homes for an extended period of time.  Many of the areas affected by Hurricane Harvey and Hurricane Irma are not located in areas identified in the Federal Register by FEMA as having special flood hazards and as such, may not be covered by any flood insurance.  To the extent that delinquencies increase on such mortgage loans secured by properties located in these areas affected by Hurricane Harvey or Hurricane Irma or to the extent that such mortgagors are unable to repair their properties due to a lack of flood insurance, payments on the mortgage-backed securities we own may be reduced or delayed. However, we do not expect these events to ultimately have a significant impact to our condensed consolidated financial statements.

In the third quarter of 2017 we continued to invest in residential credit assets, which tend to be less interest rate sensitive than Agency RMBS. During the third quarter of 2017, we added approximately $783 million of investments to our loan portfolio, bringing the total to $13.5 billion or 67% of total investments as of September 30, 2017. We also added $454 million of new investments to our Agency CMBS portfolio bringing our total Agency CMBS portfolio to $1.8 billion at September 31, 2017. Our investments in Agency and Non-Agency investments at September 30, 2017 were relatively unchanged compared to June 30, 2017.

Our book value per common share was $16.92 as of September 30, 2017 up from $16.54 as of June 30, 2017 driven by continued strength in the residential credit markets, and particularly residential loans. The Case-Shiller index shows continued strength and increasing values in US home prices while US mortgage rates continue to stay at low levels which supports home affordability, home purchases and refinancing activity. Further supporting the US housing market, the US unemployment rates continue to decline which has provided improved stability over the last few years.

Given the economic environment, we continue to seek high yielding investment opportunities that will deliver a durable dividend to our shareholders while managing risk and safeguarding book value.

Business Operations

Net Income Summary

The table below presents our net income on a GAAP basis for the quarters and nine months ended September 30, 2017 and 2016.

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Net Income
(dollars in thousands, except share and per share data)
(unaudited)
	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
Net interest income:
Interest income (1)	$	296,813		$	250,953		$	836,801		$	673,246
Interest expense (2)	140,358			94,911			388,544			241,120
Net interest income	156,455			156,042			448,257			432,126
Other-than-temporary impairments:
Total other-than-temporary impairment losses	(784		)	(993		)	(4,245		)	(8,555		)
Portion of loss recognized in other comprehensive income	(10,684		)	(10,581		)	(39,431		)	(34,652		)
Net other-than-temporary credit impairment losses	(11,468		)	(11,574		)	(43,676		)	(43,207		)
Other investment gains (losses):
Net unrealized gains (losses) on derivatives	9,204			27,628			19,902			(51,382		)
Realized gains (losses) on terminations of interest rate swaps	—			—			(16,143		)	(60,616		)
Net realized gains (losses) on derivatives	(7,841		)	(14,268		)	(28,680		)	(58,934		)
Net gains (losses) on derivatives	1,363			13,360			(24,921		)	(170,932		)
Net unrealized gains (losses) on financial instruments at fair value	19,042			32,999			159,047			80,217
Net realized gains (losses) on sales of investments	1			3,079			9,709			7,035
Gains (losses) on extinguishment of debt	(1		)	(45		)	(48,016		)	(1,811		)
Total other gains (losses)	20,405			49,393			95,819			(85,491		)
Other income:
Other income	—			—			—			95,000
Total other income	—			—			—			95,000
Other expenses:
Compensation and benefits	7,533			6,911			22,759			19,087
General and administrative expenses	4,537			4,332			13,162			13,073
Servicing fees	10,715			9,788			31,193			23,139
Deal expenses	3,357			—			16,054			13,022
Total other expenses	26,142			21,031			83,168			68,321
Income (loss) before income taxes	139,250			172,830			417,232			330,107
Income taxes	18			13			172			65
Net income (loss)	$	139,232		$	172,817		$	417,060		$	330,042
Dividend on preferred stock	$	9,400		$	—		$	24,083		$	—
Net income (loss) available to common shareholders	$	129,832		$	172,817		$	392,977		$	330,042
Net income (loss) per share available to common shareholders:
Basic	$	0.69		$	0.92		$	2.09		$	1.76
Diluted	$	0.69		$	0.92		$	2.09		$	1.76
Weighted average number of common shares outstanding:
Basic	187,779,794			187,729,765			187,773,715			187,727,667
Diluted	188,192,111			187,919,792			188,176,757			187,917,694
Dividends declared per share of common stock	$	0.50		$	0.48		$	1.50		$	1.94

(1) Includes interest income of consolidated VIEs of $241,195 and $195,488 for the quarters ended September 30, 2017 and 2016, respectively and interest income of consolidated VIEs of $668,621 and $488,353 for the nine months ended September 30, 2017 and 2016 respectively. See Note 8 to consolidated financial statements for further discussion.

(2) Includes interest expense of consolidated VIEs of $101,856 and $70,715 for the quarters ended September 30, 2017 and 2016, respectively and interest expense of consolidated VIEs of $290,264and $168,738 for the nine months ended September 30, 2017 and 2016 respectively. See Note 8 to consolidated financial statements for further discussion.

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Results of Operations for the Quarters and Nine Months Ended September 30, 2017 and 2016.

Our primary source of income is interest income earned on our assets, net of interest expense paid on our financing liabilities.

Our net income available to common shareholders decreased by $43 million to $130 million, or $0.69 per average basic common share, for the quarter ended September 30, 2017 as compared to $173 million, or $0.92 per average basic common share, for the quarter ended September 30, 2016. The decrease in net income for the quarter ended September 30, 2017 is primarily due to a decrease in unrealized gains on derivatives and a decrease in unrealized gains on instruments at fair value of $18 million and $14 million, respectively, compared to the same period of 2016.

Our net income available to common shareholders increased by $63 million to $393 million, or $2.09 per average basic common share, for the nine months ended September 30, 2017 as compared to $330 million, or $1.76 per average basic common share, for the nine months ended September 30, 2016. The increase in net income for the nine months ended September 30, 2017 is primarily due to an increase in unrealized gains on financial instruments at fair value, an increase in unrealized gains on derivatives and lower realized losses on termination of swaps of $79 million, $71 million and $44 million, respectively, compared to the same period of 2016. These gains were offset by a decrease in other income of $95 million, which was a one-time receipt of additional remedies in the first quarter 2016 and an increase in losses on debt extinguishment of $46 million compared to the same period of 2016.

Interest Income

The changes in our interest income for quarter and nine month ended September 30, 2017 as compared to the same period of 2016, are primarily driven by the repositioning of our balance sheet by adding residential mortgage loans and decreasing our investments in Non-agency RMBS. These changes have impacted interest income for the quarter and nine months as follows.

Interest income increased by $46 million, or 18%, to $297 million for the quarter ended September 30, 2017 as compared to$251 million for the same period of 2016. The increase is primarily due to the increase in interest income earned on residential mortgage loans of $53 million as compared to the same period of 2016. This increase was offset, in part, by lower interest income on our Agency MBS of $5 million and Non-agency RMBS transferred to consolidated VIEs of $5 million, as compared to the same period of 2016 as we have reduced our Agency MBS and Non-agency RMBS since 2016.

Interest income increased by $164 million, or 24%, to $837 million for the nine months ended September 30, 2017 as compared to $673 million for the same period of 2016. The increase is primarily due to the increase in interest income earned on residential mortgage loans of $196 million as compared to the same period of 2016. This increase was offset, in part, by lower interest incomes on our Agency MBS of $20 million and Non-agency RMBS transferred to consolidated VIEs of $13 million as compared to the same period of 2016.

Interest Expense

Interest expense increased by $45 million, or 48%, to $140 million for the quarter ended September 30, 2017 as compared to $95 million for the same period of 2016. The increase is primarily due to increased interest expense on securitized debt, collateralized by seasoned subprime residential mortgage loans and repurchase agreements collateralized by RMBS from loan securitization of $32 million and $12 million, respectively, which were driven primarily by higher securitized debt and repurchase agreements collateralized by loan balances compared to the same period of 2016. Interest expense is also higher as a result of higher interest rates compared to the third quarter of 2016.

Interest expense increased by $147 million, or 61%, to $389 million for the nine months ended September 30, 2017 as compared to $241 million for the same period of 2016. The increase is primarily due to increased interest expense on securitized debt, collateralized by seasoned subprime residential mortgage loans of $122 million, which was driven primarily by higher securitized debt balance compared to the same period of 2016. Interest expense is also higher for the nine months ended September 30, 2017 as a result of higher interest rates compared to the same period of 2016. LIBOR rates have increased over the first nine months of 2017 following the increases in the Federal fund rate in December 2016, March 2017 and June 2017.

Interest expense for GAAP reporting does not include the periodic costs of our derivative hedges, which are reported separately in our GAAP financial statements.

Economic Net Interest Income

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Our “Economic net interest income” is a non-GAAP financial measure, that equals interest income, less interest expense and realized losses on our interest rate swaps. Realized losses on our interest rate swaps are the periodic net settlement payments made or received.  For the purpose of computing economic net interest income and ratios relating to cost of funds measures throughout this section, interest expense includes net payments on our interest rate swaps, which is presented as a part of Realized gains (losses) on derivatives in our Consolidated Statements of Operations. Interest rate swaps are used to manage the increase in interest paid on repurchase agreements in a rising rate environment. Presenting the net contractual interest payments on interest rate swaps with the interest paid on interest-bearing liabilities reflects our total contractual interest payments. We believe this presentation is useful to investors because it depicts the economic value of our investment strategy by showing actual interest expense and net interest income. However, Economic net interest income should not be viewed in isolation and is not a substitute for net interest income computed in accordance with GAAP. Where indicated, interest expense, including interest payments on interest rate swaps, is referred to as economic interest expense. Where indicated, net interest income reflecting interest payments on interest rate swaps, is referred to as economic net interest income.

The following table reconciles the GAAP and non-GAAP measurements reflected in the Management’s Discussion and Analysis of Financial Condition and Results of Operations.

	GAAP Interest Income		GAAP Interest Expense		Net Realized Losses on Interest Rate Swaps		Economic Interest Expense		GAAP Net Interest Income		Net Realized Losses on Interest Rate Swaps			Other (1)			Economic Net Interest Income
For the Quarter Ended September 30, 2017	$	296,813	$	140,358	$	3,489	$	143,847	$	156,455	$	(3,489	)	$	(167	)	$	152,799
For the Quarter Ended June 30, 2017	$	288,644	$	137,955	$	3,486	$	141,441	$	150,689	$	(3,486	)	$	(350	)	$	146,853
For the Quarter Ended March 31, 2017	$	251,344	$	110,231	$	4,106	$	114,337	$	141,113	$	(4,106	)	$	(519	)	$	136,488
For the Quarter Ended December 31, 2016	$	260,823	$	106,737	$	4,151	$	110,888	$	154,086	$	(4,151	)	$	40		$	149,975
For the Quarter Ended September 30, 2016	$	250,953	$	94,911	$	4,595	$	99,506	$	156,042	$	(4,595	)	$	(105	)	$	151,342

(1) Primarily interest income on cash and cash equivalents.

Net Interest Rate Spread

The following table shows our average earning assets held, interest earned on assets, yield on average interest earning assets, average debt balance, economic interest expense, economic average cost of funds, economic net interest income, and net interest rate spread for the periods presented.

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	For the Quarters Ended
	September 30, 2017						September 30, 2016
	(dollars in thousands)						(dollars in thousands)
	Average Balance		Interest		Average Yield/Cost		Average Balance		Interest		Average Yield/Cost
Assets:
Interest-earning assets (1):
Agency MBS	$	3,733,640	$	24,236	2.6	%	$	3,735,142	$	29,482	3.2	%
Non-Agency RMBS	1,258,634		28,590		9.1	%	1,404,995		25,879		7.4	%
Non-Agency RMBS transferred to consolidated VIEs	1,000,912		56,388		22.5	%	1,267,633		61,272		19.3	%
Residential mortgage loans held for investment	12,959,595		187,432		5.8	%	8,974,781		134,215		6.0	%
Total	$	18,952,781	$	296,646	6.3	%	$	15,382,551	$	250,848	6.5	%
Liabilities and stockholders' equity:
Interest-bearing liabilities:
Repurchase agreements collateralized by:
Agency MBS (2)	$	3,114,689	$	14,211	1.8	%	$	3,407,242	$	11,606	1.4	%
Non-Agency RMBS	706,941		5,257		3.0	%	831,412		5,700		2.7	%
Re-Remic repurchase agreements	443,029		3,679		3.3	%	660,303		4,901		3.0	%
RMBS from loan securitizations	2,285,232		18,843		3.3	%	970,425		6,584		2.7	%
Securitized debt, collateralized by Non-Agency RMBS	248,989		4,416		7.1	%	402,657		5,182		5.1	%
Securitized debt, collateralized by loans	9,399,125		97,441		4.1	%	7,313,626		65,533		3.6	%
Total	$	16,198,005	$	143,847	3.6	%	$	13,585,665	$	99,506	2.9	%
Economic net interest income/net interest rate spread			$	152,799	2.7	%			$	151,342	3.6	%
Net interest-earning assets/net interest margin	$	2,754,776			3.2	%	$	1,796,886			3.9	%
Ratio of interest-earning assets to interest bearing liabilities	1.17						1.13
(1) Interest-earning assets at amortized cost
(2) Interest includes cash paid on swaps

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	For the Nine Months Ended
	September 30, 2017						September 30, 2016
	(dollars in thousands)						(dollars in thousands)
	Average Balance		Interest		Average Yield/Cost		Average Balance		Interest		Average Yield/Cost
Assets:
Interest-earning assets (1):
Agency MBS	$	3,732,289	76,157		2.7	%	$	4,869,331	$	96,517	2.6	%
Non-Agency RMBS	1,315,497		88,362		9.0	%	1,433,403		87,454		8.1	%
Non-Agency RMBS transferred to consolidated VIEs	1,071,150		175,008		21.8	%	1,343,038		188,393		18.7	%
Residential mortgage loans held for investment	11,486,239		496,238		5.8	%	6,800,775		299,960		5.9	%
Total	$	17,605,175	$	835,765	6.3	%	$	14,446,547	$	672,324	6.2	%
Liabilities and stockholders' equity:
Interest-bearing liabilities:
Repurchase agreements collateralized by:
Agency MBS (2)	$	3,129,569	$	37,875	1.6	%	$	4,479,616	$	48,681	1.4	%
Non-Agency RMBS	728,160		16,018		2.9	%	784,021		15,810		2.7	%
Re-Remic repurchase agreements	491,303		11,921		3.2	%	685,271		$	16,645	3.2	%
RMBS from loan securitizations	1,763,856		43,546		3.3	%	794,515		15,202		2.6	%
Securitized debt, collateralized by Non-Agency RMBS	283,873		14,991		7.0	%	456,709		15,101		4.4	%
Securitized debt, collateralized by loans	8,741,986		275,272		4.2	%	5,477,156		153,637		3.7	%
Total	$	15,138,747	$	399,623	3.5	%	$	12,677,288	$	265,076	2.8	%
Economic net interest income/net interest rate spread			$	436,142	2.8	%			$	407,248	3.4	%
Net interest-earning assets/net interest margin	$	2,466,428			3.3	%	$	1,769,259			3.8	%
Ratio of interest-earning assets to interest bearing liabilities	1.16						1.14
(1) Interest-earning assets at amortized cost
(2) Interest includes cash paid on swaps

Economic Net Interest Income and the Average Earning Assets

Our economic net interest income increased by $2 million to $153 million for the quarter ended September 30, 2017 from $151 million for the same period of 2016. Our economic interest income increased by $29 million to $436 million for the nine months ended September 30, 2017 from $407 million for the same periods of 2016. Our net interest rate spread, which equals the yield on our average interest-earning assets less the economic average cost of funds decreased by 90 and 60 basis points for the quarter and nine months ended September 30, 2017 as compared to the same period of 2016. The net interest margin, which equals the economic net interest income as a percentage of the net average balance of our interest-earning assets less our interest-bearing liabilities decreased by 70 and 50 basis points for the quarter and nine months ended September 30, 2017, as compared to the same periods of 2016. Average net interest-earning assets increased by $1.0 billion and $697 million for the quarter and nine months ended September 30, 2017 from the same periods of the prior quarters. The increase in average net interest-earning assets for the quarter ended September 30, 2017 as compared to the same period of 2016, was primarily driven by an increase in our investments in residential mortgage loans, which was partially offset by an increase in our securitized debt, collateralized by loans portfolio and repurchase agreements collateralized by RMBS from loan securitizations.

Economic Interest Expense and the Cost of Funds

The borrowing rate at which we are able to finance our assets using repurchase agreements and securitized debt is typically correlated to LIBOR and the term of the financing. The table below shows our average borrowed funds, economic interest expense, average cost of funds (inclusive of realized losses on interest rate swaps), average one-month LIBOR, average six-month LIBOR, average one-month LIBOR relative to average six-month LIBOR, and average cost of funds relative to average one- and six- month LIBOR.

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	Average Debt Balance		Economic Interest Expense (1)		Average Cost of Funds		Average One-Month LIBOR		Average Six-Month LIBOR		Average One-Month LIBOR Relative to Average Six-Month LIBOR
	(Ratios have been annualized, dollars in thousands)
For The Quarter Ended September 30, 2017	$	16,198,005	$	143,847	3.55	%	1.23	%	1.46	%	(0.23	)%
For The Quarter Ended June 30, 2017	$	16,077,813	$	141,441	3.50	%	1.06	%	1.42	%	(0.36	)%
For The Quarter Ended March 31, 2017	$	13,240,294	$	114,337	3.50	%	0.83	%	1.37	%	(0.54	)%
For The Quarter Ended December 31, 2016	$	13,038,695	$	110,888	3.40	%	0.60	%	1.28	%	(0.68	)%
For The Quarter Ended September 30, 2016	$	13,585,665	$	99,506	2.90	%	0.51	%	1.15	%	(0.64	)%

(1) Includes effect of realized losses on interest rate swaps.

Average interest-bearing liabilities increased by $2.6 billion for the quarter ended September 30, 2017 as compared to the same period of 2016. Economic interest expense increased by $44 million for the quarter ended September 30, 2017 as compared to the same period of 2016. The increase in average interest-bearing liabilities and economic interest expense is a result of the increase in the amount of our securitized debt collateralized by seasoned subprime mortgage loans as well as increased LIBOR.

Average one-month and six month LIBOR were up 72 basis points and 31 basis points, respectively, during the quarter ended September 30, 2017 as compared to the same period of 2016, contributing to the increase in economic interest expense in addition to increased average debt balances. While we do acquire interest rate hedges to mitigate changes in interest rate risks, the hedges may not fully offset interest expense movements.

Net other-than-temporary credit impairment losses

OTTI losses are generated when fair values decline below our amortized cost basis, an unrealized loss, and the expected future cash flows decline from prior periods, an adverse change. When an unrealized loss and an adverse change in cash flows occur, we will recognize an OTTI loss in earnings. In addition, if we intend to sell a security, or believe we will be required to sell a security in an unrealized loss position, we will recognize an OTTI loss in earnings equal to the unrealized loss.

OTTI losses were $11 million and $12 million for the quarter ended September 30, 2017, and 2016 and $44 million and $43 million for the nine months ended September 30, 2017 and 2016, respectively. Of these amounts, $11 million and $5 million of the OTTI for the quarters ended September 30, 2017 and 2016 and $37 million and $33 million for the nine months ended September 30, 2017 and 2016, respectively, were related to securities included in our consolidated VIEs. As of September 30, 2017, we had no Non-agency RMBS securities subject to OTTI in an unrealized loss position for which we did not recognize impairment. We continue to monitor our investment portfolio and will record an OTTI for all investments in an unrealized loss position for which we do not believe we will recover our amortized cost prior to maturity or sale.

Net gains (losses) on derivatives

Our interest rate swaps are primarily used to economically hedge the effects of changes in interest rates on our portfolio, specifically our floating rate debt. Therefore, we included the periodic interest costs of the interest rate swaps for the quarters and nine months ended September 30, 2017 and 2016 on these economic hedges in our presentation of economic net interest income and our net interest spreads. As we do not account for these as hedges for GAAP presentation, we present these gains and losses separately in the Consolidated Statements of Operations. The decrease in the net periodic interest cost of the interest rate swaps are primarily due to the decline in our swap portfolio balance and increase in interest rates.

The table below shows a summary of our net gains (losses) on derivative instruments, for the three and nine months ended September 30, 2017 and 2016, respectively.

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	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)
Periodic interest cost of interest rate swaps, net	$	(3,491	)	$	(4,595	)	$	(11,080	)	$	(23,955	)
Realized gains (losses) on derivative instruments, net:
Treasury Futures	(3,267		)	(7,823		)	(12,267		)	(28,797		)
Swaptions	(1,083		)	(1,850		)	(5,333		)	(5,615		)
Other Derivative Assets	—			—			—			(567		)
Swaps - Terminations	—			—			(16,143		)	(60,616		)
Total realized gains (losses) on derivative instruments, net	(4,350		)	(9,673		)	(33,743		)	(95,595		)
Unrealized gains (losses) on derivative instruments, net:
Interest Rate Swaps	5,001			13,395			15,694			(36,840		)
Treasury Futures	3,467			12,149			3,079			(4,259		)
Swaptions	736			2,084			1,129			(10,283		)
Other Derivative Assets	—			—			—			—
Total unrealized gains (losses) on derivative instruments, net:	9,204			27,628			19,902			(51,382		)
Total gains (losses) on derivative instruments, net	$	1,363		$	13,360		$	(24,921	)	$	(170,932	)

There were no swap terminations for the quarters ended September 30, 2017 and 2016. The Company paid $16 million to terminate interest rate swaps with a notional value of $250 million during the nine months ended September 30, 2017. The terminated swaps had original maturities ranging from 2024 to 2034. The Company paid $61 million to terminate interest rate swaps with a notional value of $3.3 billion during the nine months ended September 30, 2016. The terminated swaps had original maturities ranging from 2017 to 2034. These amounts represented the fair value of the terminated interest rate swaps, not counting any accrued interest at the time of settlement. Our Treasury futures positions remained unchanged at $620 million of notional value at September 30, 2017 and 2016. We reduced our swaptions by $142 million of notional value to $482 million at September 30, 2017, as compared to the $624 million notional value at December 31, 2016.

Changes in our derivative positions were a result of changes in our portfolio composition and changes in interest rates.

The Company incurred realized losses on our short futures positions of $3 million and $12 million during the quarter and nine months ended September 30, 2017. The Company incurred a realized loss of $8 million and $29 million on our short futures position during the quarter and nine months ended September 30, 2016, respectively. The realized losses were driven primarily by declines in interest rates during these periods, which increased the Treasury futures prices, resulting in realized losses on our short futures positions. Treasury futures are not included in our economic interest expense and economic net interest income.

During the quarter and nine months ended September 30, 2017, we recognized total net gains on derivatives of $1 million and total net losses of $25 million, respectively, compared to net gains of $13 million and net losses of $171 million, respectively, for the same period of 2016. The net gains and losses on our derivatives include both unrealized and realized gains and losses. Realized gains and losses include the net cash paid and received on our interest rate swaps during the period as well as sales and settlements of our Treasury Futures, swaptions and mortgage options. The realized loss on our derivative instruments is primarily a result of the pay fixed leg of our swaps carried at a higher interest rate than the received floating leg of these same swaps, resulting in a net payment on the periodic settlement of the swaps during the quarter. 

Unrealized gains and losses include the change in market value, period over period, on our derivatives portfolio. Changes in market value are generally a result of changes in interest rates. We may or may not ultimately realize these unrealized derivative gains and losses depending on trade activity, changes in interest rates and the values of the underlying securities.

Net Unrealized Gains (Losses) on Financial Instruments at Fair Value

We have elected the fair value option with changes in fair value reflected in earnings for our IO RMBS securities, certain Non-Agency RMBS securities which receive residual cash flows, Loans held for investment, and the related financing for the loans consolidated as a VIE in our statement of financial condition. In addition, we have elected to account for Agency MBS investments acquired on or after July 1, 2017 under the fair value option. All Agency MBS investments owned prior to this date

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will continue to be carried at fair value with changes in fair value reported in other comprehensive income (OCI) as available-for-sale investments, consistent with the Company’s current accounting practices.

IO RMBS securities represent the right to receive the interest on a pool of mortgage backed securities, including both Agency and Non-Agency mortgage pools. The fair value of IO RMBS securities are heavily impacted by changes in expected prepayment rates. When IO securities prepay faster than expectations, the holder of the IO security will receive less interest on the investment due to the reduced principal.

We invest in acquired residual interests in several seasoned pools of mortgage loans. These holdings generally do not have a traditional unpaid principal amount and pay cash based on guidance in the trust documents when excess cash is available. Many of these holdings do not pay any interest and may never pay interest. We have elected to carry these residual interests at fair value with changes in fair value reflected in earnings.

The Net unrealized gains on financial instruments at fair value for the quarter ended September 30, 2017 were $19 million, which were primarily driven by unrealized gains on Loans held for investment $57 million offset by unrealized losses on Securitized debt collateralized by loans held for investments of $38 million. The Net unrealized gains on financial instruments at fair value for the nine months ended September 30, 2017 were $159 million, which were primarily driven by unrealized gains on Loans held for investment $272 million offset by unrealized losses on Securitized debt collateralized by loans held for investments of $95 million.

Gains and Losses on Sales of Assets and Loss on extinguishment of securitized debt

For the quarters ended September 30, 2017 and 2016, we had net realized gains of $1 thousand and $3 million, respectively, on sales of investments. For the nine months ended September 30, 2017 and 2016, we had net realized gains of $10 million and $7 million, respectively, on sales of investments. We do not forecast sales of investments as we generally expect to invest for long term gains. However, from time to time, we may sell assets to create liquidity necessary to pursue new opportunities, achieve targeted leverage ratios as well as for gains when prices indicate a sale is most beneficial to us, or is the most prudent course of action to maintain a targeted risk adjusted yield for our investors.

When we acquire our outstanding securitized debt, we extinguish the outstanding debt and recognize a gain or loss based on the difference between the carrying value of the debt and the cost to acquire the debt which is reflected in the Consolidated Statements of Operations as a loss on extinguishment of debt.

During the quarter ended September 30, 2017, the Company acquired securitized debt collateralized by Non-Agency RMBS with an amortized cost balance of $166 thousand for $167 thousand. This transaction resulted in a net loss on the extinguishment of debt of $1 thousand, which is reflected in earnings for the quarter and nine months ended September 30, 2017. During the quarter ended September 30, 2016, the Company acquired securitized debt collateralized by Non-Agency RMBS with an amortized cost balance of $4 million for $4 million. This transaction resulted in a net loss on the extinguishment of debt of $45 thousand. This loss is reflected in earnings for the quarter and nine months ended September 30, 2016.

The Company did not acquire any securitized debt collateralized by loans during the quarters ended September 30, 2017 and 2016. During the second quarter of 2017, the Company acquired securitized debt collateralized by loans with an amortized cost balance of $197 million for $245 million. This transaction resulted in a net loss on the extinguishment of debt of $48 million, which is reflected in earnings for the nine months ended September 30, 2017. As the Company's securitized debt is carried at fair value with changes in fair value reflected in earnings some of this loss was recognized during prior periods. During the first quarter of 2016, the Company acquired securitized debt collateralized by loans with an amortized cost balance of $44 million for $46 million. This transaction resulted in a net loss on the extinguishment of debt of $2 million. This loss is reflected in earnings for the nine months ended September 30, 2016.

Compensation, General and Administrative Expenses and Deal Expenses

The table below shows our total compensation and benefit expense, general and administrative, or G&A, expenses and deal expenses as compared to average total assets and average equity for the periods presented.

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	Total Compensation, G&A and Deal Expenses		Total Compensation, G&A and Deal Expenses/Average Assets		Total Compensation, G&A and Deal Expenses/Average Equity
	(Ratios have been annualized, dollars in thousands)
For The Quarter Ended September 30, 2017	$	15,427	0.29	%	1.71	%
For The Quarter Ended June 30, 2017	$	13,601	0.26	%	1.53	%
For The Quarter Ended March 31, 2017	$	22,949	0.49	%	2.77	%
For The Quarter Ended December 31, 2016	$	16,659	0.39	%	2.16	%
For The Quarter Ended September 30, 2016	$	11,243	0.26	%	1.50	%

Compensation and benefit costs were $8 million and $7 million for the quarter ended September 30, 2017 and 2016, respectively, and $23 million and $19 million for the nine months ended September 30, 2017 and 2016, respectively. The increases in Compensation and benefit costs were primarily driven by higher stock based compensation.

G&A expenses were $5 million and $4 million for the quarter ended September 30, 2017 and 2016, respectively, and $13 million for the nine months ended September 30, 2017 and 2016, respectively. The G&A expenses are primarily comprised of auditing, information technology, legal and consulting expenses.

The Company incurred deal expenses of $3 million and $16 million for the quarter and nine months ended September 30, 2017, respectively, related to the securitization of seasoned subprime mortgage pools. There were no deal expenses for the quarter ended September 30, 2016 and $13 million for the nine months ended September 30, 2016.

Servicing Fees

Servicing fees paid by our consolidated VIEs were approximately $10 million for the quarter ended September 30, 2017 and 2016. For the nine months ended September 30, 2017 and 2016, the servicing fees were $31 million and $23 million, respectively. These servicing fees are related to the consolidation of the whole loan securitization vehicles and are paid from interest income earned by the VIEs. The increase in servicing fees for the nine months ended September 30, 2017 as compared to the same period of 2016 was driven by the creation of new securitizations in 2016 and 2017. The servicing fees range from 25 to 50 basis points of unpaid principal balances of our consolidated VIEs.

Core earnings

Core earnings is a non-GAAP measure and is defined as GAAP net income excluding unrealized gains on the aggregate portfolio, impairment losses, realized gains on sales of investments, realized gains or losses on futures, realized gains or losses on swap terminations, gain on deconsolidation, extinguishment of debt and certain other non-recurring gains or losses. As defined, core earnings include interest income and expense as well as realized losses on interest rate swaps used to hedge interest rate risk. Management believes that the presentation of core earnings provides investors with a useful measure to facilitate comparisons of financial performance between our REIT peers, but has important limitations. We believe core earnings as described above helps evaluate our financial performance without the impact of certain transactions but is of limited usefulness as an analytical tool. Therefore, core earnings should not be viewed in isolation and is not a substitute for net income or net income per basic share computed in accordance with GAAP.

The following table provides GAAP measures of net income and net income per basic share available to common stockholders for the periods presented and details with respect to reconciling the line items to core earnings and related per average basic common share amounts:

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	For the Quarters Ended
	September 30, 2017			June 30, 2017			March 31, 2017			December 31, 2016			September 30, 2016
	(dollars in thousands, except per share data)
GAAP Net income available to common stockholders	$	129,832		$	105,617		$	157,524		$	219,454		$	172,817
Adjustments:
Net other-than-temporary credit impairment losses	11,468			13,509			18,701			14,780			11,574
Net unrealized (gains) losses on derivatives	(9,204		)	(5,802		)	(4,896		)	(101,475		)	(27,628		)
Net unrealized (gains) losses on financial instruments at fair value	(19,042		)	(67,762		)	(72,243		)	20,664			(32,999		)
Net realized (gains) losses on sales of investments	(1		)	(4,541		)	(5,167		)	(11,121		)	(3,079		)
(Gains) losses on extinguishment of debt	1			48,014			—			(1,334		)	45
Realized (gains) losses on terminations of interest rate swaps	—			16,143			—			—			—
Net realized (gains) losses on Futures (1)	3,267			6,914			2,084			(19,628		)	7,823
Core Earnings	$	116,321		$	112,092		$	96,003		$	121,340		$	128,553
GAAP net income per basic common share	$	0.69		$	0.56		$	0.84		$	1.17		$	0.92
Core earnings per basic common share(2)	$	0.62		$	0.60		$	0.51		$	0.65		$	0.68
(1) Included in net realized gains (losses) on derivatives in the Consolidated Statements of Operations.
(2) We note that core and taxable earnings will typically differ, and may materially differ, due to differences on realized gains and losses on investments and related hedges, credit loss recognition,
timing differences in premium amortization, accretion of discounts, equity compensation and other items.

Our core earnings for the quarter ended September 30, 2017 were $116 million or $0.62 per average basic common share, compared to $129 million or $0.68 per average basic common share for the quarter ended September 30, 2016. Core earnings decreased by $12 million or $0.06 per average basic common share for the quarter ended September 30, 2017 as compared to the same period of 2016, primarily due to preferred stock dividend and deal expenses.

Net Income (Loss) and Return on Total Stockholders' Equity

The table below shows our Net Income, Economic Net Interest Income and Core Earnings, each as a percentage of average stockholders' equity. Return on average equity is defined as our GAAP net income (loss) as a percentage of average equity.  Average equity is defined as the average of our beginning and ending stockholders' equity balance for the period reported. Economic Net Interest Income and Core Earnings are non-GAAP measures as defined in previous sections.

	Return on Average Equity		Economic Net Interest Income/Average Equity *		Core Earnings/Average Equity
	(Ratios have been annualized)
For the Quarter Ended September 30, 2017	15.42	%	16.92	%	12.88	%
For the Quarter Ended June 30, 2017	12.98	%	16.57	%	12.65	%
For the Quarter Ended March 31, 2017	19.63	%	16.46	%	11.57	%
For the Quarter Ended December 31, 2016	28.82	%	19.48	%	15.76	%
For the Quarter Ended September 30, 2016	23.04	%	20.18	%	17.14	%

* Includes effect of realized losses on interest rate swaps.

Return on average equity decreased by 762 basis points for the quarter ended September 30, 2017 as compared to the same period of 2016. This was primarily due to a decrease in our net income by $34 million to $139 million for the quarter ended September 30, 2017 as compared to net income of $173 million for the quarter ended September 30, 2016. Economic net interest income as a percentage of average equity decreased by 326 basis points, driven primarily by higher interest expense related to the increase in LIBOR rates. Core earnings as a percentage of average equity decreased by 426 basis points for the quarter ended September 30, 2017 compared to the quarter ended September 30, 2016, which was primarily driven by a decrease in core earnings of $12 million and higher equity balance due to preferred stock issuance.

Financial Condition

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Portfolio Review

During the nine months ended September 30, 2017, on an aggregate basis, we purchased $6.8 billion of assets, sold $698 million of invested assets, and received $2.1 billion in principal payments related to our Agency, Non-Agency RMBS and Loans held for investments portfolio.

The following table summarizes certain characteristics of our portfolio at September 30, 2017 and December 31, 2016.

	For the Quarter Ended			For the Year Ended
	September 30, 2017			December 31, 2016
Interest earning assets at period-end (1)	$	20,843,272		$	16,251,470
Interest bearing liabilities at period-end	$	16,625,996		$	12,876,124
GAAP Leverage at period-end	4.6:1			4.1:1
GAAP Leverage at period-end (recourse)	1.8:1			1.8:1
Portfolio Composition, at amortized cost
Non-Agency RMBS	6.2		%	9.0		%
Senior	2.9		%	3.9		%
Senior, interest only	1.4		%	1.9		%
Subordinated	1.8		%	3.1		%
Subordinated, interest only	0.1		%	0.1		%
RMBS transferred to consolidated VIEs	4.9		%	7.6		%
Agency MBS	22.2		%	27.7		%
Residential	12.4		%	17.8		%
Commercial	9.2		%	8.9		%
Interest-only	0.6		%	1.0		%
Loans held for investment	66.7		%	55.7		%
Fixed-rate percentage of portfolio	92.0		%	88.4		%
Adjustable-rate percentage of portfolio	8.0		%	11.6		%
Annualized yield on average interest earning assets for the periods ended	6.3		%	6.4		%
Annualized cost of funds on average borrowed funds for the periods ended (2)	3.6		%	3.0		%

(1) Excludes cash and cash equivalents.

(2) Includes the effect of realized losses on interest rate swaps.

GAAP leverage at period-end is calculated as a ratio of our repurchase agreements and securitized debt liabilities over GAAP book value. GAAP recourse leverage is calculated as a ratio of our repurchase agreements over GAAP book value.

The following table presents details of each asset class in our portfolio at September 30, 2017 and December 31, 2016. The principal or notional value represents the interest income earning balance of each class. The weighted average figures are weighted by each investment’s respective principal/notional value in the asset class.

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	September 30, 2017
	Principal or Notional Value at Period-End  (dollars in thousands)		Weighted Average Amortized Cost Basis		Weighted Average Fair Value		Weighted Average Coupon		Weighted Average Yield at Period-End (1)		Weighted Average 3 Month CPR at Period-End		Weighted Average 12 Month CPR at Period-End		Weighted Average Delinquency Pipeline 60+		Weighted Average Loss Severity(2)		Weighted Average Credit Enhancement		Principal Writedowns During the Quarter  (dollars in thousands)
Non-Agency Mortgage-Backed Securities
Senior	$	826,556	$	69.25	$	80.13	3.5	%	7.2	%	13.8	%	13.8	%	20.3	%	45.5	%	9.3	%	$	1,857
Senior, interest only	$	4,919,406	$	5.40	$	4.23	1.4	%	7.6	%	14.9	%	14.6	%	17.0	%	53.2	%	0.0	%	$	—
Subordinated	$	531,526	$	66.62	$	79.30	4.1	%	9.2	%	13.4	%	15.5	%	14.9	%	47.8	%	15.9	%	$	3,772
Subordinated, interest only	$	256,286	$	5.06	$	4.52	1.0	%	8.4	%	12.3	%	14.0	%	12.9	%	38.2	%	0.0	%	$	—
RMBS transferred to consolidated VIEs	$	2,023,838	$	47.88	$	81.37	4.8	%	22.4	%	16.8	%	16.5	%	17.9	%	51.4	%	1.5	%	$	21,761
Agency Mortgage-Backed Securities
Residential	$	2,316,838	$	105.54	$	104.80	3.8	%	2.9	%	14.0	%	16.4	%	0.4	%	N/A		N/A		$	—
Commercial	$	1,774,802	$	102.26	$	102.09	3.6	%	3.2	%	0.0	%	—	%	0.0	%	N/A		N/A		$	—
Interest-only	$	3,176,110	$	3.82	$	3.61	0.7	%	3.5	%	9.8	%	15.2	%	0.3	%	N/A		N/A		$	—
Loans held for investment	$	13,327,252	$	98.36	$	101.66	6.4	%	6.0	%	11.5	%	11.4	%	3.5	%	45.1	%	N/A		$	25,075

(1) Bond Equivalent Yield at period end. Weighted Average Yield is calculated using each investment's respective amortized cost.

(2) Calculated based on reported losses to date, utilizing widest data set available (i.e., life-time losses, 12-month loss, etc.)

	December 31, 2016
	Principal or Notional Value at Period-End  (dollars in thousands)		Weighted Average Amortized Cost Basis		Weighted Average Fair Value		Weighted Average Coupon		Weighted Average Yield at Period-End (1)		Weighted Average 3 Month CPR at Period-End		Weighted Average 12 Month CPR at Period-End		Weighted Average Delinquency Pipeline 60+		Weighted Average Loss Severity(2)		Weighted Average Credit Enhancement		Principal Writedowns During the Quarter (dollars in thousands)
Non-Agency Mortgage-Backed Securities
Senior	$	884,579	$	68.42	$	76.17	3.1	%	7.4	%	12.5	%	12.9	%	22.4	%	57.7	%	9.4	%	$	9,671
Senior, interest only	$	5,616,526	$	5.16	$	4.43	1.4	%	11.5	%	14.4	%	13.7	%	18.2	%	59.2	%	0.0	%	$	—
Subordinated	$	673,259	$	70.83	$	82.21	3.8	%	9.2	%	13.5	%	14.7	%	15.8	%	51.7	%	15.9	%	$	6,148
Subordinated, interest only	$	266,927	$	5.20	$	4.50	1.1	%	13.5	%	10.2	%	10.9	%	11.7	%	56.1	%	0.0	%	$	—
RMBS transferred to consolidated VIEs	$	2,338,183	$	50.32	$	78.78	4.8	%	19.7	%	14.8	%	13.4	%	18.8	%	56.9	%	1.5	%	$	17,643
Agency Mortgage-Backed Securities
Residential	$	2,594,569	$	105.78	$	104.29	3.9	%	3.0	%	21.8	%	15.9	%	0.4	%	N/A		N/A		$	—
Commercial	$	1,331,544	$	102.64	$	98.91	3.6	%	2.9	%	0.2	%	0.1	%	0.0	%	N/A		N/A		$	—
Interest-only	$	3,356,491	$	4.53	$	4.31	0.8	%	3.5	%	26.4	%	12.9	%	0.3	%	N/A		N/A		$	—
Loans held for investment	$	8,868,783	$	96.96	$	98.85	6.5	%	6.0	%	11.1	%	10.8	%	3.8	%	45.3	%	N/A		$	21,803

(1) Bond Equivalent Yield at period end. Weighted Average Yield is calculated using each investment's respective amortized cost.

(2) Calculated based on reported losses to date, utilizing widest data set available (i.e., life-time losses, 12-month loss, etc.)

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Based on the projected cash flows for our Non-Agency RMBS that are not of high credit quality, a portion of the original purchase discount is designated as Accretable Discount, which reflects the purchase discount expected to be accreted into interest income, and a portion is designated as Non-Accretable Difference, which represents the contractual principal on the security that is not expected to be collected. The amount designated as Non-Accretable Difference may be adjusted over time, based on the actual performance of the security, its underlying collateral, actual and projected cash flow from such collateral, economic conditions and other factors. If the performance of a security is more favorable than previously estimated, a portion of the amount designated as Non-Accretable Difference may be accreted into interest income over time. Conversely, if the performance of a security is less favorable than previously estimated, an OTTI may be recognized resulting in an increase in the amounts designated as Non-Accretable Difference.

The following table presents changes to Accretable Discount (net of premiums) as it pertains to our Non-Agency RMBS portfolio, excluding premiums on IOs, during the previous five quarters.

	For the Quarters Ended
Accretable Discount (Net of Premiums)	September 30, 2017			June 30, 2017			March 31, 2017			December 31, 2016			September 30, 2016
	(dollars in thousands)
Balance, beginning of period	$	627,724		$	648,659		$	683,648		$	733,060		$	769,764
Accretion of discount	(43,502		)	(42,625		)	(43,715		)	(44,427		)	(44,455		)
Purchases	1,723			(108		)	(3,642		)	(33,987		)	8,959
Sales and deconsolidation	5,792			212			(7,303		)	(2,138		)	(14,386		)
Transfers from/(to) credit reserve, net	31,245			21,586			19,671			31,140			13,178
Balance, end of period	$	622,982		$	627,724		$	648,659		$	683,648		$	733,060

Liquidity and Capital Resources

General

Liquidity measures our ability to meet cash requirements, including ongoing commitments to repay our borrowings, purchase RMBS, mortgage loans and other assets for our portfolio, pay dividends and other general business needs. Our principal sources of capital and funds for additional investments primarily include earnings, principal paydowns and sales from our investments, borrowings under securitizations and re-securitizations, repurchase agreements and other financing facilities, and proceeds from equity or other securities offerings. 

To meet our short term (one year or less) liquidity needs, we expect to continue to borrow funds in the form of repurchase agreements and, subject to market conditions, other types of financing. The terms of the repurchase transaction borrowings under our master repurchase agreements generally conform to the terms in the standard master repurchase agreement as published by the Securities Industry and Financial Markets Association, or SIFMA, as to repayment, margin requirements and the segregation of all securities we have initially sold under the repurchase transaction. In addition, each lender typically requires that we include supplemental terms and conditions to the standard master repurchase agreement. Typical supplemental terms and conditions include changes to the margin maintenance requirements, cross default provisions, required haircuts (or the percentage that is subtracted from the value of RMBS that collateralizes the financing), purchase price maintenance requirements, and requirements that all disputes related to the repurchase agreement be litigated or arbitrated in a particular jurisdiction. These provisions may differ for each of our lenders. 

We also expect to meet our short term liquidity needs by relying on the cash flows generated by our investments. These cash flows are primarily comprised of monthly principal and interest payments received on our investments. We may also sell our investments and utilize those proceeds to meet our short term liquidity needs or enter into non-recourse financing of our assets through sales of securities to third parties of loan securitizations or RMBS re-securitization transactions.

Based on our current portfolio, leverage ratio and available borrowing arrangements, we believe our assets will be sufficient to enable us to meet anticipated short-term liquidity requirements. However, a decline in the value of our collateral could cause a temporary liquidity shortfall due to the timing of margin calls on the financing arrangements and the actual receipt of the cash related to principal paydowns. If our cash resources are insufficient to satisfy our liquidity requirements, we may have to sell investments, potentially at a loss, or issue debt or additional common or preferred equity securities.

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To meet our longer term liquidity needs (greater than one year), we expect our principal sources of capital and funds to continue to be provided by earnings, principal paydowns and sales from our investments, borrowings under securitizations and re-securitizations, repurchase agreements and other financing facilities, as well as proceeds from equity or other securities offerings.

In addition to the principal sources of capital described above, we may enter into warehouse facilities and use longer dated structured repurchase agreements. The use of any particular source of capital and funds will depend on market conditions, availability of these facilities, and the investment opportunities available to us.

Current Period

We held cash and cash equivalents of approximately $38 million and $178 million at September 30, 2017 and December 31, 2016, respectively. As a result of our operating, investing and financing activities described below, our cash position decreased by $140 million from December 31, 2016 to September 30, 2017.

Our operating activities provided net cash of approximately $309 million and $264 million for the nine months ended September 30, 2017 and 2016, respectively. The cash provided by our operations is primarily due to interest received in excess of interest paid during the period. For the nine months ended September 30, 2017 and 2016, interest received net of interest paid was $434 million and $425 million, respectively.

Our investing activities used cash of $4.1 billion and $1.5 billion for the nine months ended September 30, 2017 and 2016, respectively. During the nine months ended September 30, 2017, we purchased investments of $6.8 billion, primarily Loans held for investments. This cash used was offset in part by cash received on principal repayments on our Agency MBS, Non-Agency MBS and Loans of $2.1 billion and investment sales of $698 million. The purchase activity for the nine months ended September 30, 2017 were primarily due to our portfolio re-balancing from interest rate sensitive MBS investments to less interest rate sensitive residential credit assets.

Our financing activities provided cash of $3.6 billion and $1.3 billion for the nine months ended September 30, 2017 and 2016, respectively. During the nine months ended September 30, 2017, we received cash of $4.2 billion from debt issuance, $314 million from our preferred stock Series B offering and $1.1 billion from net proceeds received on repurchase agreements. This cash provided was offset in part by repayment of principal on our securitized debt of $1.7 billion and common dividends paid of $282 million and preferred dividends paid of $27 million.

Our recourse leverage is 1.8:1 for the nine months ended September 30, 2017 and the year ended December 31, 2016, respectively. Our recourse leverage excludes the securitized debt which can only be repaid from the proceeds on the assets securing this debt in their respective VIEs. Our recourse leverage is presented as a ratio of our repurchase agreements, which are recourse to the assets of the Company, to our equity.

We believe that our cash balances and liquid Agency portfolio provides an appropriate level of liquidity. Even though we have unrestricted Agency MBS investments, we expect to meet our future cash needs primarily from principal and interest payments on our portfolio and do not anticipate we will need to sell unrestricted Agency MBS investments to meet our liquidity needs. We expect to continue to finance our MBS portfolio largely through repurchase agreements and loans through the securitization market. In addition, we may from time to time sell securities, issue debt, or issue equity as a source of cash to fund new purchases.

At September 30, 2017 and December 31, 2016 the remaining maturities on our RMBS repurchase agreements were as follows.

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	September 30, 2017		December 31, 2016
	(dollars in thousands)
Overnight	$	—	$	—
1 to 29 days	3,777,160		2,947,604
30 to 59 days	1,591,370		958,956
60 to 89 days	330,186		407,625
90 to 119 days	28,798		559,533
Greater than or equal to 120 days	982,307		727,185
Total	$	6,709,821	$	5,600,903
Average remaining maturity of Repurchase agreements secured by:
Agency MBS	21 days		32 days
Non-agency MBS and Loans held for investment	73 days		98 days

We collateralize the repurchase agreements we use to finance our operations with our MBS investments. Our counterparties negotiate a ‘haircut’, which is the difference expressed in percentage terms between the fair value of the collateral and the amount the counterparty will lend to us, when we enter into a financing transaction. The size of the haircut reflects the perceived risk associated with holding the MBS by the lender. The haircut provides lenders with a cushion for daily market value movements that reduce the need for a margin call to be issued or margin to be returned as normal daily increases or decreases in MBS market values occur. At September 30, 2017, and December 31, 2016, the weighted average haircut on our repurchase agreements collateralized by Agency MBS was 5.08% and 5.38%, respectively. At September 30, 2017, the weighted average haircut on our repurchase agreements collateralized by Non-Agency MBS and Loans held for investments was 25.33% compared to 33.68% at December 31, 2016. At September 30, 2017, the weighted average borrowing rates for our repurchase agreements collateralized by Agency MBS was 1.39% and Non-Agency MBS and Loans held for investments was 3.25%. At December 31, 2016, the weighted average borrowing rates for our repurchase agreements collateralized by Agency MBS was 0.90% and Non-Agency MBS and Loans held for investment was 3.05%, respectively.

As the fair value of the Non-Agency MBS is more difficult to determine, as well as more volatile period to period than Agency MBS, the Non-Agency MBS typically requires a larger haircut. In addition, when financing assets using standard form of SIFMA Master Repurchase Agreements, the counterparty to the agreement typically nets its exposure to us on all outstanding repurchase agreements and issues margin calls if movement of the fair values of the assets in the aggregate exceeds their allowable exposure to us. A decline in asset fair values could create a margin call, or may create no margin call depending on the counterparty’s specific policy. In addition, counterparties consider a number of factors, including their aggregate exposure to us as a whole and the number of days remaining before the repurchase transaction closes prior to issuing a margin call. See Note 5 to our Consolidated Financial Statements for a discussion on how we determine the fair values of the RMBS collateralizing our repurchase agreements.

The table below presents our average daily repurchase balance and the repurchase balance at each period end for the periods presented. Our balance at period-end tends to fluctuate from the average daily balances due to the adjusting of the size of our portfolio by using leverage. Our average repurchase agreement balance for the quarter ended September 30, 2017 decreased compared to our average repurchase agreement balance for the quarter ended September 30, 2016 due to lower borrowings related to our Agency portfolio. We continue to deploy capital for strategic purchases of investments.

Period	Average Repurchase Balance		Repurchase Balance at Period End
	(dollars in thousands)
Quarter End September 30, 2017	$	6,549,891	$	6,709,821
Quarter End June 30, 2017	$	6,092,881	$	6,254,153
Quarter End March 31, 2017	$	5,800,141	$	5,851,204
Quarter End December 31, 2016	$	5,699,068	$	5,600,903
Quarter End September 30, 2016	$	5,869,382	$	5,817,519

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We are not required to maintain any specific debt-to-equity ratio. We believe the appropriate leverage for the particular assets we are financing depends on the credit quality and risk of those assets. At September 30, 2017 and December 31, 2016, the carrying value of our total debt was approximately $16.6 billion and $12.9 billion, respectively, which represented a debt-to-equity ratio for both periods of approximately 4.6:1 and 4.1:1, respectively. We include our repurchase agreements and securitized debt in the numerator of our debt-to-equity ratio and stockholders’ equity as the denominator.

At September 30, 2017, we had repurchase agreements with 27 counterparties. All of our repurchase agreements are secured by Agency and Non-Agency RMBS or, in limited circumstances, cash. Under these repurchase agreements we may not be able to reclaim our collateral but still be obligated to pay our repurchase obligations. We mitigate this risk by spreading our exposure to multiple counterparties, as well as ensuring our counterparties are highly rated. Therefore, we believe the risk of loss of our collateral posted is mitigated by the terms of our agreements. As of September 30, 2017 and December 31, 2016, we had $8.2 billion and $7.0 billion, respectively, of securities pledged against our repurchase agreement obligations.

At September 30, 2017, our repurchase agreements have original maturities ranging from less than 30 days to 364 days and a weighted average original maturity of 94 days. We expect to renew each of our repurchase agreements at maturity. When we renew our repurchase agreements, there is a risk that we will not be able to obtain as favorable an interest rate as a result of rising rates.

We offset the risk of our repurchase agreements primarily through the use of interest rate swaps, swaptions and treasury futures. The average remaining maturities on our interest rate swaps at September 30, 2017 range from 2 years to 10 years and have a weighted average maturity of approximately 5 years. We use these interest rate derivatives to protect the portfolio from short term changes in interest rates. All of our swaps are cleared by a central clearing house. When our interest rate swaps are in a net loss position (expected cash payments are in excess of expected cash receipts on the swaps), we post collateral as required by the terms of our swap agreements. As of September 30, 2017, we have posted $46 million of cash as collateral to our swap counterparty. We have four swaption counterparties and we have posted $1 million of securities as collateral to our swaption counterparties. We have two futures counterparties, and we have posted $1 million of cash as a collateral to our futures counterparties.

Secured Debt Financing Transactions

During the nine months ended September 30, 2017, the Company acquired controlling interests in several trusts collateralized by seasoned residential subprime mortgage loans. As we held the controlling interest, we consolidated the assets and liabilities, increasing our investments in mortgage loans by $5.3 billion. The investment was financed through a combination of cash raised from issuance of preferred shares, the issuance of Secured debt and repurchase agreements.

Securitized Debt Collateralized by Non-Agency RMBS

During the quarter ended September 30, 2017, the Company acquired securitized debt collateralized by Non-Agency RMBS with an amortized cost balance of $166 thousand for $167 thousand. This transaction resulted in a net loss on the extinguishment of debt of $1 thousand, which is reflected in earnings for the quarter and nine months ended September 30, 2017. During the quarter ended September 30, 2016, the Company acquired securitized debt collateralized by Non-Agency RMBS with an amortized cost balance of $4 million for $4 million. This transaction resulted in a net loss on the extinguishment of debt of $45 thousand. This loss is reflected in earnings for the quarter and nine months ended September 30, 2016.

Securitized Debt Collateralized by Loans Held for Investment

The Company did not acquire any securitized debt collateralized by loans during the quarters ended September 30, 2017 and 2016. During the second quarter of 2017, the Company acquired securitized debt collateralized by loans with an amortized cost balance of $197 million for $245 million. This transaction resulted in a net loss on the extinguishment of debt of $48 million, which is reflected in earnings for the nine months ended September 30, 2017. As the Company's securitized debt is carried at fair value with changes in fair value reflected in earnings some of this loss was recognized during prior periods. During the first quarter of 2016, the Company acquired securitized debt collateralized by loans with an amortized cost balance of $44 million for $46 million. This transaction resulted in a net loss on the extinguishment of debt of $2 million. This loss is reflected in earnings for the nine months ended September 30, 2016.

Exposure to European Financial Counterparties

Over the past several years, several large European financial institutions have experienced financial difficulty and have been either rescued by government assistance or by other large European banks or institutions. Some of these financial institutions or their U.S. subsidiaries have provided us financing under repurchase agreements or we have entered into interest rate swaps with

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such institutions. We have entered into repurchase agreements or exchange cleared interest rate swaps with 6 counterparties as of September 30, 2017 that is either domiciled in Europe or is a U.S.-based subsidiary of a European-domiciled financial institution. The following table summarizes our exposure to such counterparties at September 30, 2017:

September 30, 2017
Country	Number of Counterparties	Repurchase Agreement Financing		Interest Rate Swaps at Fair Value		Exposure (1)
(dollars in thousands)
France	2	$	237,363	$	15,254	$	73,056
Netherlands	1	227,972		—		11,573
Switzerland	1	1,008,379		—		403,840
United Kingdom	2	235,578		—		22,448
Total	6	$	1,709,292	$	15,254	$	510,917

(1) Represents the amount of securities pledged as collateral to each counterparty less the aggregate of repurchase agreement financing and unrealized loss on swaps for each counterparty.

At September 30, 2017, we did not use credit default swaps or other forms of credit protection to hedge the exposures summarized in the table above.

If the European credit crisis, including countries that may choose to leave the Euro zone as Britain has, continues to impact these major European financial institutions, it is possible that it will also impact the operations of their U.S. subsidiaries. Our financings and operations could be adversely affected by such events. We monitor our exposure to our repurchase agreement and swap counterparties on a regular basis, using various methods, including review of recent rating agency actions, financial relief plans, credit spreads or other developments and by monitoring the amount of cash and securities collateral pledged and the associated loan amount under repurchase agreements or the fair value of swaps with our counterparties. We make reverse margin calls on our counterparties to recover excess collateral as permitted by the agreements governing our financing arrangements or interest rate swaps, or may try to take other actions to reduce the amount of our exposure to a counterparty when necessary. We actively manage the number of repurchase agreement counterparties and had 27 counterparties as of September 30, 2017.

Stockholders’ Equity

The Company declared dividends to Series A preferred stockholders of $3 million and $9 million, or $0.50 and $1.50 per preferred share during the quarter and nine months ended September 30, 2017.

In February 2017, the Company issued 13,000,000 shares of 8.00% Series B Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, par value $0.01 per share (the “Series B Preferred Stock”), at a public offering price of $25.00 per share. The Series B Preferred Stock is redeemable at $25.00 per share plus accrued and unpaid dividends (whether or not authorized or declared) exclusively at the Company’s option commencing in March 30, 2024, subject to the Company’s right, under limited circumstances, to redeem the Series B Preferred Stock prior to that date. The initial dividend rate for the Series B Preferred Stock, from and including February 27, 2017, to but not including March 30, 2024, will be equal to 8.00% per annum of the $25.00 liquidation preference per share (equivalent to the fixed annual rate of $2.00 per share). On and after March 30, 2024, dividends on the Series B Preferred Stock will accumulate at a percentage of the $25.00 liquidation preference equal to an annual floating rate of the three-month LIBOR plus a spread of 5.791% per annum. The Series B Preferred Stock is entitled to receive, when and as declared, a dividend at a rate of 8.0% per year on the $25.00 liquidation preference before the common stock is paid any dividends and is senior to the common stock with respect to distributions upon liquidation, dissolution or winding up. This transaction was completed in February 2017, pursuant to which the Company received proceeds, net of offering costs, of $314 million.

The Company declared dividends to Series B preferred stockholders of $7 million and $15 million, or $0.50 and $1.18 per preferred share during the quarter and nine months ended September 30, 2017.

Other than as discussed below under “Restricted Stock Grants,” we did not issue any common shares during the quarters and nine months ended September 30, 2017 and 2016. During the quarters and nine months ended September 30, 2017, the Company declared regular dividends to common shareholders of $0.50 and $1.50 per share or $94 million and $282 million, respectively. During the quarters and nine months ended September 30, 2016, the Company declared regular dividends to

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common shareholders of $0.48 and $1.44 per share or $91 million and $271 million, respectively, and a special dividend of $0.50 per share to common shareholders of $94 million.

Restricted Stock Grants

During the first quarter of 2017 and 2016, the Company granted certain of its employees Restricted Stock Units (“RSU”) awards.  RSU awards are designed to reward certain employees of the Company for services provided over the previous year.  The RSU awards vest equally over a three year period beginning one year from the grant date and will fully vest after three years. The RSU awards are valued at the market price of the Company’s common stock on the grant date and the employees must be employed by the Company on the vesting dates to receive the RSU awards. The Company granted 112 thousand and 266 thousand RSU awards during the first quarter of 2017 and 2016, with a grant date fair value of $2 million and $3 million, respectively, which will be recognized as compensation expense on a straight-line basis over the three year vesting period.

During the first quarter of 2017 and 2016, the Company granted certain of its employees 144 thousand and 180 thousand Performance Share Units (“PSU”) awards, respectively.  PSU awards are designed to align compensation with the Company’s future performance.  The PSU awards include a three year performance period ending on December 31, 2019 and December 31, 2018, respectively.  The final number of shares that will vest will be between 0% to 150% of the total PSU awards granted based on the stock performance of the Company as compared to an index of comparable financial institutions and will cliff vest at the end of the performance period.  The PSU awards are measured at fair value on the grant date which will be recognized as compensation expense ratably over the three year vesting period.  Fair value is determined using a Monte Carlo valuation model developed to value the specific features of the PSU awards, including market based conditions. Inputs into the model include the Company’s historical volatility, the peer average historical volatility, and the correlation coefficient of the volatility.  In addition, inputs also included the share price at the beginning of the measurement period and an estimated total shareholder return for both the Company and the peer group of comparable financial institutions.  Based on the model results, the 144 thousand PSU awards granted during 2017 had a grant date value of $3 million that will cliff vest on December 31, 2019. The 180 thousand PSU awards granted during 2016 had a grant date value of $3 million which will cliff vest on December 31, 2018.

At September 30, 2017 and December 31, 2016, there were approximately 710 thousand and 578 thousand unvested shares of restricted stock issued to our employees, respectively.

Contractual Obligations and Commitments

The following tables summarize our contractual obligations at September 30, 2017 and December 31, 2016. The estimated principal repayment schedule of the securitized debt is based on expected cash flows of the residential mortgage loans or RMBS, as adjusted for expected principal writedowns on the underlying collateral of the debt.

September 30, 2017
(dollars in thousands)
Contractual Obligations	Within One Year		One to Three Years		Three to Five Years		Greater Than or Equal to Five Years		Total
Repurchase agreements for RMBS	$	6,709,821	$	—	$	—	$	—	$	6,709,821
Securitized debt, collateralized by Non-Agency RMBS	62,165		50,055		21,013		5,913		139,146
Securitized debt at fair value, collateralized by loans held for investment	1,856,397		2,907,977		2,163,866		2,630,039		9,558,279
Interest expense on RMBS repurchase agreements (1)	29,655		—		—		—		29,655
Interest expense on securitized debt (1)	400,487		629,001		398,479		511,891		1,939,858
Total	$	9,058,525	$	3,587,033	$	2,583,358	$	3,147,843	$	18,376,759

(1) Interest is based on variable rates in effect as of September 30, 2017.

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December 31, 2016
(dollars in thousands)
Contractual Obligations	Within One Year		One to Three Years		Three to Five Years		Greater Than or Equal to Five Years		Total
Repurchase agreements for RMBS	$	5,502,178	$	98,725	$	—	$	—	$	5,600,903
Securitized debt, collateralized by Non-Agency RMBS	98,565		82,563		23,854		31,973		236,955
Securitized debt at fair value, collateralized by loans held for investment	1,151,519		1,841,808		1,423,706		2,477,123		6,894,156
Interest expense on RMBS repurchase agreements (1)	32,695		984		—		—		33,679
Interest expense on securitized debt (1)	292,521		518,929		384,928		673,272		1,869,650
Total	$	7,077,478	$	2,543,009	$	1,832,488	$	3,182,368	$	14,635,343

(1) Interest is based on variable rates in effect as of December 31, 2016.

The unfunded construction loan commitments of $518 million and $521 million as of September 30, 2017 and December 31, 2016, respectively, will primarily be paid within one year of reported periods.

Off-Balance Sheet Arrangements

We do not have any relationships with unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities, which would have been established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes. Further, we have not guaranteed any obligations of unconsolidated entities nor do we have any commitment or intent to provide funding to any such entities.

Capital Expenditure Requirements

At September 30, 2017 and December 31, 2016, we had no material commitments for capital expenditures.

Dividends

To qualify as a REIT, we must pay annual dividends to our stockholders of at least 90% of our taxable income (subject to certain adjustments). We intend to pay regular quarterly dividends to our stockholders. Before we pay any dividend, we must first meet any operating requirements and scheduled debt service on our financing facilities and other debt payable.

Inflation

A significant portion of our assets and liabilities are interest rate sensitive in nature. As a result, interest rates and other factors influence our performance far more so than does inflation. Changes in interest rates do not necessarily correlate with inflation rates or changes in inflation rates. Our consolidated financial statements are prepared in accordance with GAAP and our distributions will be determined by our Board of Directors consistent with our obligation to distribute to our stockholders at least 90% of our REIT taxable income on an annual basis in order to maintain our REIT qualification; in each case, our activities and financial condition are measured with reference to historical cost or fair market value without considering inflation.

Other Matters

None.

Critical Accounting Policies and Estimates

We prepare our financial statements in accordance with accounting principles generally accepted in the United States, or GAAP, which requires the use of estimates and assumptions. Management has discussed and reviewed the development, selection, and disclosure of critical accounting estimates with the Company’s Audit Committee. Management believes that the most critical accounting policies and estimates, since these estimates require significant judgment, are interest income and other-than temporary impairment, or OTTI, on Non-Agency RMBS, the determination of the appropriate accounting model for Non-

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Agency RMBS, the impact of default and prepayment assumptions on RMBS, and fair value measurements. Financial results could be materially different if other methodologies were used or if management modified its assumptions.

For a discussion of the Company’s critical accounting policies and estimates, see “Critical Accounting Policies and Estimates” in Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.

Recent Accounting Pronouncements

Refer to Note 2(e) in the Notes to Consolidated Financial Statements for a discussion of accounting guidance recently adopted by the Company or expected to be adopted by the Company in the future.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

The primary components of our market risk are related to credit risk, interest rate risk, prepayment risk, market value risk and real estate risk. While we do not seek to avoid risk completely, we believe the risk can be quantified from historical experience and we seek to actively manage that risk, to earn sufficient compensation to justify taking those risks and to maintain capital levels consistent with the risks we undertake.

Credit Risk

We are subject to credit risk in connection with our investments in Non-Agency RMBS and residential mortgage loans and face more credit risk on assets we own which are rated below ‘‘AAA.’’ The credit risk related to these investments pertains to the ability and willingness of the borrowers to pay, which is assessed before credit is granted or renewed and periodically reviewed throughout the loan or security term. We believe that residual loan credit quality, and thus the quality of our assets, is primarily determined by the borrowers’ credit profiles and loan characteristics. We or a third party performs an independent review of the mortgage file to assess the origination and servicing of the mortgage loan as well as our ability to enforce the mortgage. Depending on the size of the loans, we may not have reviewed all of the loans in a pool, but rather selected loans for underwriting review based upon specific risk-based criteria such as property location, loan size, effective loan-to-value ratio, borrower’s credit score and other criteria we believe to be important indicators of credit risk.  Additionally, before the purchase of loans, we obtain representations and warranties from each seller with respect to the mortgage loans, including the origination and servicing of the mortgage loan as well as the enforceability of the lien on the mortgaged property.  A seller who breaches these representations and warranties in making a loan that we purchase may be obligated to repurchase the loan from us. We use compensating factors such as liquid assets, low loan to value ratios and regional unemployment statistics in evaluating loans. Our resources include a proprietary portfolio management system, as well as third party software systems. We may utilize a third party due diligence firm to perform an independent underwriting review to ensure compliance with existing guidelines. In addition to statistical sampling techniques, we create adverse credit and valuation samples, which we individually review. We reject loans that fail to conform to our standards and do not meet our underwriting criteria. Once we own a loan, our surveillance process includes ongoing analysis through our proprietary data and servicer files. Additionally, the Non-Agency RMBS and other ABS which we acquire for our portfolio are reviewed by us to ensure that they satisfy our risk based criteria. Our review of Non-Agency RMBS and other ABS includes utilizing a proprietary portfolio management system. Our review of Non-Agency RMBS and other ABS is based on quantitative and qualitative analysis of the risk-adjusted returns on Non-Agency RMBS and other ABS. This analysis includes an evaluation of the collateral characteristics supporting the RMBS such as borrower payment history, credit profiles, geographic concentrations, credit enhancement, seasoning, and other pertinent factors.

Interest Rate Risk

Interest rate risk is highly sensitive to many factors, including governmental, monetary and tax policies, domestic and international economic and political considerations and other factors beyond our control. We are subject to interest rate risk in connection with our investments and our related debt obligations, which are generally repurchase agreements, warehouse facilities and securitization/re-securitization trusts. Our repurchase agreements and warehouse facilities may be of limited duration that is periodically refinanced at current market rates. We intend to mitigate this risk through utilization of derivative contracts, primarily interest rate swap agreements, swaptions, futures and mortgage options.

Interest Rate Effects on Net Interest Income

Our operating results depend, in large part, on differences between the income from our investments and our borrowing costs. Most of our warehouse facilities and repurchase agreements provide financing based on a floating rate of interest calculated on a fixed spread over LIBOR. The fixed spread varies depending on the type of underlying asset which collateralizes the

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financing. During periods of rising interest rates, the borrowing costs associated with our investments tend to increase while the income earned on our fixed interest rate investments may remain substantially unchanged. This will result in a narrowing of the net interest spread between the related assets and borrowings and may even result in losses. Further, during this portion of the interest rate and credit cycles, defaults could increase and result in credit losses to us, which could adversely affect our liquidity and operating results. Such delinquencies or defaults could also have an adverse effect on the spread between interest-earning assets and interest-bearing liabilities. Hedging techniques are partly based on assumed levels of prepayments of our fixed-rate and hybrid adjustable-rate mortgage loans and RMBS. If prepayments are slower or faster than assumed, the life of the mortgage loans and RMBS will be longer or shorter, which would reduce the effectiveness of any hedging strategies we may use and may cause losses on such transactions.

Interest Rate Effects on Fair Value

Another component of interest rate risk is the effect changes in interest rates will have on the fair value of the assets we acquire. We face the risk that the fair value of our assets will increase or decrease at different rates than that of our liabilities, including our hedging instruments. We primarily assess our interest rate risk by estimating the duration of our assets compared to the duration of our liabilities and hedges. Duration essentially measures the market price volatility of financial instruments as interest rates change. We generally calculate duration using various financial models and empirical data. Different models and methodologies can produce different duration numbers for the same securities.

It is important to note that the impact of changing interest rates on fair value can change significantly when interest rates change beyond 100 basis points from current levels. Therefore, the volatility in the fair value of our assets could increase significantly when interest rates change beyond 100 basis points. In addition, other factors impact the fair value of our interest rate-sensitive investments and hedging instruments, such as the shape of the yield curve, market expectations as to future interest rate changes and other market conditions. Accordingly, in the event of changes in actual interest rates, the change in the fair value of our assets would likely differ from that shown below and such difference might be material and adverse to our stockholders.

Interest Rate Cap Risk

We may also invest in adjustable-rate mortgage loans and RMBS. These are mortgages or RMBS in which the underlying mortgages are typically subject to periodic and lifetime interest rate caps and floors, which limit the amount by which the security’s interest yield may change during any given period. However, our borrowing costs pursuant to our financing agreements will not be subject to similar restrictions. Therefore, in a period of increasing interest rates, interest rate costs on our borrowings could increase without limitation by caps, while the interest-rate yields on our adjustable-rate mortgage loans and RMBS would effectively be limited. This problem will be magnified to the extent we acquire adjustable-rate RMBS that are not based on mortgages which are fully indexed. In addition, the mortgages or the underlying mortgages in an RMBS may be subject to periodic payment caps that result in some portion of the interest being deferred and added to the principal outstanding. This could result in our receipt of less cash income on our adjustable-rate mortgages or RMBS than we need in order to pay the interest cost on our related borrowings. These factors could lower our net interest income or cause a net loss during periods of rising interest rates, which would harm our financial condition, cash flows and results of operations.

Interest Rate Mismatch Risk

We fund a substantial portion of our acquisitions of RMBS with borrowings that, after the effect of hedging, have interest rates based on indices and re-pricing terms similar to, but of somewhat shorter maturities than, the interest rate indices and re-pricing terms of the mortgages and RMBS. In most cases the interest rate indices and re-pricing terms of our mortgage assets and our funding sources will not be identical, thereby creating an interest rate mismatch between assets and liabilities. Our cost of funds would likely rise or fall more quickly than would our earnings rate on assets. During periods of changing interest rates, such interest rate mismatches could negatively impact our financial condition, cash flows and results of operations. To mitigate interest rate mismatches, we may utilize the hedging strategies discussed above. Our analysis of risks is based on our experience, estimates, models and assumptions. These analyses rely on models which utilize estimates of fair value and interest rate sensitivity. Actual economic conditions or implementation of investment decisions by our management may produce results that differ significantly from the estimates and assumptions used in our models and the projected results shown in this Form 10-Q.

Our profitability and the value of our portfolio (including derivatives) may be adversely affected during any period as a result of changing interest rates. The following table quantifies the potential changes in net interest income and portfolio value for our Agency MBS portfolio should interest rates go up or down 50 and 100 basis points, assuming parallel movements in the yield curves. All changes in income and value are measured as percentage changes from the projected net interest income and portfolio value at the base interest rate scenario. The base interest rate scenario assumes interest rates at September 30, 2017

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and various estimates regarding prepayment and all activities are made at each level of rate change. Actual results could differ significantly from these estimates.

	September 30, 2017
Change in Interest Rate	Projected Percentage Change in Net Interest Income (1)		Projected Percentage Change in Portfolio Value with Effect of Interest Rate Swaps and Other Hedging Transactions (2)
-100 Basis Points	6.38	%	0.86	%
-50 Basis Points	3.26	%	0.57	%
Base Interest Rate	—		—
+50 Basis Points	(3.40	)%	(0.81	)%
+100 Basis Points	(9.40	)%	(1.75	)%

(1) Change in annual economic net interest income. Includes interest expense on interest rate swaps.

(2) Projected Percentage Change in Portfolio Value is based on instantaneous moves in interest rates.

Prepayment Risk

As we receive prepayments of principal on these investments, premiums and discounts on such investments will be amortized or accreted into interest income. In general, an increase in prepayment rates will accelerate the amortization of purchase premiums, thereby reducing the interest income earned on the investments. Conversely, discounts on such investments are accelerated and accreted into interest income increasing interest income.

Extension Risk

Management computes the projected weighted-average life of our investments based on assumptions regarding the rate at which the borrowers will prepay the underlying mortgages. In general, when fixed-rate or hybrid adjustable-rate mortgage loans or RMBS are acquired via borrowings, we may, but are not required to, enter into an interest rate swap agreement or other hedging instrument that effectively fixes our borrowing costs for a period close to the anticipated average life of the fixed-rate portion of the related assets. This strategy is designed to protect us from rising interest rates as the borrowing costs are effectively fixed for the duration of the fixed-rate portion of the related assets. However, if prepayment rates decrease in a rising interest rate environment, the life of the fixed-rate portion of the related assets could extend beyond the term of the swap agreement or other hedging instrument. This could have a negative impact on our results from operations, as borrowing costs would no longer be fixed after the end of the hedging instrument while the income earned on the fixed and hybrid adjustable-rate assets would remain fixed. In extreme situations, we may be forced to sell assets to maintain adequate liquidity, which could cause us to incur losses.

67

Basis Risk

We seek to limit our interest rate risk by hedging portions of our portfolio through interest rate swaps and other types of hedging instruments. Interest rate swaps are generally tied to underlying Treasury benchmark interest rates. Basis risk relates to the risk of the spread between our RMBS and underlying hedges widening. Such a widening may cause a decline in the fair value of our RMBS that is greater than the increase in fair value of our hedges resulting in a net decline in book value. The widening of mortgage-backed securities yields and Treasury benchmark interest rates may result from a variety of factors such as anticipated or actual monetary policy actions or other market factors.

Market Risk

Market Value Risk

Our available-for-sale securities are reflected at their estimated fair value with unrealized gains and losses excluded from earnings and reported in other comprehensive income if no OTTI has been recognized in earnings. The estimated fair value of these securities fluctuates primarily due to changes in interest rates, prepayment speeds, market liquidity, credit quality, and other factors. Generally, in a rising interest rate environment, the estimated fair value of these securities would be expected to decrease; conversely, in a decreasing interest rate environment, the estimated fair value of these securities would be expected to increase. As market volatility increases or liquidity decreases, the fair value of our investments may be adversely impacted.

Real Estate Market Risk

We own assets secured by real property and may own real property directly in the future. Residential property values are subject to volatility and may be affected adversely by a number of factors, including, but not limited to, national, regional and local economic conditions and unemployment (which may be adversely affected by industry slowdowns and other factors); local real estate conditions (such as an oversupply of housing); changes or continued weakness in specific industry segments; construction quality, age and design; demographic factors; natural disasters and other acts of God; and retroactive changes to building or similar codes. In addition, decreases in property values reduce the value of the collateral and the potential proceeds available to a borrower to repay our loans, which could also cause us to incur losses.

Risk Management

Subject to maintaining our REIT status, we seek to manage risk exposure to protect our portfolio of residential mortgage loans, RMBS, and other assets and related debt against the effects of major interest rate changes. We generally seek to manage risk by:

• monitoring and adjusting, if necessary, the reset index and interest rate related to our RMBS and our financings;

• attempting to structure our financing agreements to have a range of different maturities, terms, amortizations and interest rate adjustment periods;

• using derivatives, financial futures, swaps, options, caps, floors and forward sales to adjust the interest rate sensitivity of our investments and our borrowings;

• using securitization financing to lower average cost of funds relative to short-term financing vehicles further allowing us to receive the benefit of attractive terms for an extended period of time in contrast to short term financing and maturity dates of the investments not included in the securitization; and

• actively managing, through assets selection, on an aggregate basis, the interest rate indices, interest rate adjustment periods, and gross reset margins of our investments and the interest rate indices and adjustment periods of our financings.

Our efforts to manage our assets and liabilities are concerned with the timing and magnitude of the re-pricing of assets and liabilities. We attempt to control risks associated with interest rate movements. Methods for evaluating interest rate risk include an analysis of our interest rate sensitivity “gap,” which is the difference between interest-earning assets and interest-bearing liabilities maturing or re-pricing within a given time period. A gap is considered positive when the amount of interest-rate sensitive assets exceeds the amount of interest-rate sensitive liabilities. A gap is considered negative when the amount of interest-rate sensitive liabilities exceeds interest-rate sensitive assets. During a period of rising interest rates, a negative gap would tend to adversely affect net interest income, while a positive gap would tend to result in an increase in net interest income. During a period of falling interest rates, a negative gap would tend to result in an increase in net interest income, while a positive gap would tend to affect net interest income adversely. Because different types of assets and liabilities with the same or similar maturities may react differently to changes in overall market rates or conditions, changes in interest rates may affect net interest income positively or negatively even if an institution were perfectly matched in each maturity category.

68

The following table sets forth the estimated maturity or re-pricing of our interest-earning assets and interest-bearing liabilities at September 30, 2017. The amounts of assets and liabilities shown within a particular period were determined in accordance with the contractual terms of the assets and liabilities, except adjustable-rate loans, and securities are included in the period in which their interest rates are first scheduled to adjust and not in the period in which they mature and includes the effect of the interest rate swaps. The interest rate sensitivity of our assets and liabilities in the table could vary substantially based on actual prepayments.

September 30, 2017
(dollars in thousands)
	Within 3 Months			3-12 Months			1 Year to 3 Years			Greater than 3 Years			Total
Rate sensitive assets	$	334,390		$	1,235,339		$	3,560		$	19,280,396		$	20,853,685
Cash equivalents	38,055			—			—			—			38,055
Total rate sensitive assets	$	372,445		$	1,235,339		$	3,560		$	19,280,396		$	20,891,740
Rate sensitive liabilities	4,376,635			5,306,427			—			—			9,683,062
Interest rate sensitivity gap	$	(4,004,190	)	$	(4,071,088	)	$	3,560		$	19,280,396		$	11,208,678
Cumulative rate sensitivity gap	$	(4,004,190	)	$	(8,075,278	)	$	(8,071,718	)	$	11,208,678
Cumulative interest rate sensitivity gap as a percentage of total rate sensitive assets	(19		)%	(39		)%	(39		)%	54		%

Our analysis of risks is based on our management’s experience, estimates, models and assumptions. These analyses rely on models which utilize estimates of fair value and interest rate sensitivity. Actual economic conditions or implementation of investment decisions by our management may produce results that differ significantly from the estimates and assumptions used in our models and the projected results shown in the above tables and in this Form 10-K. These analyses contain certain forward-looking statements and are subject to the safe harbor statement set forth under the heading, “Special Note Regarding Forward-Looking Statements.”

Item 4.  Controls and Procedures

(a) Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this report, an evaluation of the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934) was performed under the supervision and with the participation of the Company’s senior management, including the Chief Executive Officer and the Chief Financial Officer. Based on that evaluation, the Company’s management, including the Chief Executive Officer and the Chief Financial Officer, concluded that the Company’s disclosure controls and procedures were effective as of the end of the period covered by this report.

(b) Changes in Internal Control over Financial Reporting

As required by Rule 13a-15(d) under the Exchange Act, the Company’s management, including its Chief Executive Officer and Chief Financial Officer, has evaluated the Company’s internal control over financial reporting to determine whether any changes occurred during the period covered by this quarterly report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. Based on that evaluation, there has been no such change during the third quarter of 2017.

Part II. Other Information

Item 1. Legal Proceedings

None.

69

Item 1A. Risk Factors

Under “Part I — Item 1A — Risk Factors” of our 2016 Form 10-K, we set forth risk factors related to (i) risks associated with our investments and our operations, (ii) risks associated with adverse developments in the mortgage finance and credit markets, (iii) risks related to financing, (iv) risks related to accounting matters and our 1940 act exemption, (v) regulatory and legal risks, (vi) risks related to our capital stock and (vii) federal income tax risks. You should carefully consider the risk factors set forth in our 2016 Form 10-K. As of the date hereof, there have been no material changes to the risk factors set forth in our Form 10-K for the year ended December 31, 2016.

Item 6. Exhibits

EXHIBIT INDEX
Exhibit Number	Description
3.1	Articles of Amendment and Restatement of Chimera Investment Corporation (filed as Exhibit 3.1 to the Company’s Registration Statement on Amendment No. 1 to Form S-11 (File No. 333-145525) filed on September 27, 2007 and incorporated herein by reference)
3.2	Articles of Amendment to the Articles of Amendment and Restatement of Chimera Investment Corporation (filed as Exhibit 3.1 to the Company’s Report on Form 8-K filed on May 28, 2009 and incorporated herein by reference)
3.3	Articles of Amendment to the Articles of Amendment and Restatement of Chimera Investment Corporation (filed as Exhibit 3.1 to the Company’s Report on Form 8-K filed on November 8, 2010 and incorporated herein by reference)
3.4	Articles of Amendment to the Articles of Amendment and Restatement of Chimera Investment Corporation (filed as Exhibit 3.1 to the Company’s Report on Form 8-K filed on April 6, 2015 and incorporated herein by reference)
3.5	Articles of Amendment to the Articles of Amendment and Restatement of Chimera Investment Corporation (filed as Exhibit 3.2 to the Company’s Report on Form 8-K filed on April 6, 2015 and incorporated herein by reference)
3.6	Articles Supplementary to the Articles of Amendment and Restatement of Chimera Investment Corporation designating the Company’s 8.00% Series A Preferred Stock (filed as Exhibit 3.1 to the Company’s Report on Form 8-K filed October 12, 2016 and incorporated herein by reference)
3.7	Articles Supplementary to the Articles of Amendment and Restatement of Chimera Investment Corporation designating the Company’s 8.00% Series B Fixed-to-Floating Preferred Stock (filed as Exhibit 3.7 to the Company’s Report on Form 8-A filed February 24, 2017 and incorporated herein by reference)
3.8	Amended and Restated Bylaws of Chimera Investment Corporation (filed as Exhibit 3.1 to the Company’s Report on Form 8-K filed on January 10, 2017 and incorporated herein by reference)
4.1	Specimen Common Stock Certificate of Chimera Investment Corporation (filed as Exhibit 4.1 to the Company’s Registration Statement on Amendment No. 1 to Form S-11 (File No. 333-145525) filed on September 27, 2007 and incorporated herein by reference)
4.2	Form of specimen certificate representing the shares of 8.00% Series A Cumulative Redeemable Preferred Stock (filed as Exhibit 4.1 to the Company's Report on Form 8-K filed October 12, 2016 and incorporated herein by reference)
4.3	Form of specimen certificate representing the shares of 8.00% Series B Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock (filed as Exhibit 4.1 to the Company’s Report on Form 8-A filed February 24, 2017 and incorporated herein by reference)
31.1	Certification of Matthew Lambiase, Chief Executive Officer and President of the Registrant, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Rob Colligan, Chief Financial Officer of the Registrant, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Matthew Lambiase, Chief Executive Officer and President of the Registrant, pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Rob Colligan, Chief Financial Officer of the Registrant, pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

70

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

CHIMERA INVESTMENT CORPORATION
	By:	/s/ Matthew Lambiase
		Matthew Lambiase
		(Chief Executive Officer and President
		and duly authorized officer of the registrant)
Date: November 2, 2017

	By:	/s/ Rob Colligan
		Rob Colligan
		(Chief Financial Officer
		and principal financial officer of the registrant)
Date: November 2, 2017

71

EX-31.1

CERTIFICATIONS

Exhibit 31.1

I, Matthew Lambiase, certify that:

1.     I have reviewed this quarterly report on Form 10-Q of Chimera Investment Corporation;

2.     Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.     Based on my knowledge, the consolidated financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.     The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f) for the registrant and have:

a.     Designed such disclosure controls and procedures or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.     Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.     Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.     Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.     The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.     All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.    Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

  Date: November 02, 2017

  /s/ Matthew Lambiase

  Matthew Lambiase

  Chief Executive Officer and President (Principal Executive Officer)

EX-31.2

CERTIFICATIONS

Exhibit 31.2

I, Rob Colligan, certify that:

1.     I have reviewed this quarterly report on Form 10-Q of Chimera Investment Corporation;

2.     Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.     Based on my knowledge, the consolidated financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.     The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f) for the registrant and have:

a.    Designed such disclosure controls and procedures or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.     Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.     Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.     Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.     The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.     All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.    Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

  Date: November 02, 2017

  /s/ Rob Colligan

  Rob Colligan

  Chief Financial Officer (Principal Financial Officer)

EX-32.1

Exhibit 32.1

CHIMERA INVESTMENT CORPORATION

520 MADISON AVE 32nd FLOOR

NEW YORK, NEW YORK 10022

CERTIFICATION

PURSUANT TO SECTION 906 OF THE

SARBANES-OXLEY ACT OF 2002, 18 U.S.C. SECTION 1350

In connection with the quarterly report on Form 10-Q of Chimera Investment Corporation (the “Company”) for the period ended September 30, 2017 to be filed with Securities and Exchange Commission on or about the date hereof (the “Report”), I, Matthew Lambiase, President and Chief Executive Officer of the Company, certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company at the dates of, and for the periods covered by, the Report.

It is not intended that this statement be deemed to be filed for purposes of the Securities Exchange Act of 1934.

/s/ Matthew Lambiase

Matthew Lambiase

Chief Executive Officer and President

  Date: November 02, 2017

EX-32.2

Exhibit 32.2

CHIMERA INVESTMENT CORPORATION

520 MADISON AVE 32nd FLOOR

NEW YORK, NEW YORK 10022

CERTIFICATION

PURSUANT TO SECTION 906 OF THE

SARBANES-OXLEY ACT OF 2002, 18 U.S.C. SECTION 1350

In connection with the quarterly report on Form 10-Q of Chimera Investment Corporation (the “Company”) for the period ended September 30, 2017 to be filed with Securities and Exchange Commission on or about the date hereof (the “Report”), I, Rob Colligan, Chief Financial Officer of the Company, certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company at the dates of, and for the periods covered by, the Report.

It is not intended that this statement be deemed to be filed for purposes of the Securities Exchange Act of 1934.

/s/ Rob Colligan

Rob Colligan

Chief Financial Officer

  Date: November 02, 2017

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 31, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	CHIMERA INVESTMENT CORP
Trading Symbol	CIM
Entity Central Index Key	0001409493
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		187,781,029

XML

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Assets:
Cash and cash equivalents		$ 38,055	$ 177,714
Non-Agency RMBS, at fair value		2,950,348	3,330,063
Agency MBS, at fair value		4,354,872	4,167,754
Loans held for investment, at fair value		13,538,052	8,753,653
Receivable for investment sold		11,235	0
Accrued interest receivable		99,421	79,697
Other assets		172,876	166,350
Derivatives, at fair value, net		22,525	9,677
Total assets	[1]	21,187,384	16,684,908
Liabilities:
Repurchase agreements ($8.2 billion and $7.0 billion, pledged as collateral, respectively)		6,709,821	5,600,903
Securitized debt, collateralized by Non-Agency RMBS ($1.6 billion and $1.8 billion pledged as collateral, respectively)		233,113	334,124
Securitized debt at fair value, collateralized by loans held for investment ($13.0 billion and $8.8 billion pledged as collateral, respectively)		9,683,062	6,941,097
Payable for investments purchased		733,142	520,532
Accrued interest payable		64,280	48,670
Dividends payable		95,000	97,005
Accounts payable and other liabilities		21,331	16,694
Derivatives, at fair value		1,204	2,350
Total liabilities	[1]	17,540,953	13,561,375
Commitments and Contingencies (See Note 15)
Stockholders' Equity:
Common stock: par value $0.01 per share; 300,000,000 shares authorized, 187,781,000 and 187,739,634 shares issued and outstanding, respectively		1,878	1,877
Additional paid-in-capital		3,825,832	3,508,779
Accumulated other comprehensive income		813,118	718,106
Cumulative earnings		2,860,244	2,443,184
Cumulative distributions to stockholders		(3,854,829)	(3,548,471)
Total stockholders' equity		3,646,431	3,123,533
Total liabilities and stockholders' equity		21,187,384	16,684,908
Preferred Class A
Stockholders' Equity:
Preferred Stock, par value of $0.01 per share, 100,000,000 shares authorized:		58	58
Preferred Class B
Stockholders' Equity:
Preferred Stock, par value of $0.01 per share, 100,000,000 shares authorized:		$ 130	$ 0

[1] The Company's consolidated statements of financial condition include assets of consolidated variable interest entities (“VIEs”) that can only be used to settle obligations and liabilities of the VIE for which creditors do not have recourse to the primary beneficiary (Chimera Investment Corporation). As of September 30, 2017 and December 31, 2016, total assets of consolidated VIEs were $14,846,980 and $10,761,954, respectively, and total liabilities of consolidated VIEs were $9,954,437 and $7,302,905, respectively. See Note 8 for further discussion.

XML

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Preferred Stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred Stock, shares authorized (shares)	100,000,000	100,000,000
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	300,000,000	300,000,000
Common stock, shares issued (shares)	187,781,000	187,739,634
Common stock, shares outstanding (shares)	187,781,000	187,739,634
Repurchase Agreements | Residential Mortgage-Backed Securities
Securities pledged as collateral	$ 8,150,309,000	$ 7,033,866,000
Variable Interest Entities, Primary Beneficiary, Aggregated Disclosure
Assets	14,846,980,000	10,761,954,000
Liabilities	9,954,437,000	7,302,905,000
Securitized Loans | Non-agency MBS
Securities pledged as collateral	1,600,000,000	1,800,000,000
Securitized Loans | Loans Held for Investment at Fair Value
Securities pledged as collateral	$ 13,000,000,000	$ 8,800,000,000
Preferred Class A
Preferred Stock, shares issued (shares)	5,800,000	5,800,000
Preferred Stock, shares outstanding (shares)	5,800,000	5,800,000
Preferred Stock, liquidation preference	$ 145,000	$ 145,000
Preferred Stock, dividend rate (percent)	8.00%	8.00%
Preferred Class B
Preferred Stock, shares issued (shares)	13,000,000
Preferred Stock, shares outstanding (shares)	0
Preferred Stock, liquidation preference	$ 325,000
Preferred Stock, dividend rate (percent)	8.00%

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net interest income:
Interest income	[1]	$ 296,813	$ 250,953	$ 836,801	$ 673,246
Interest expense	[2]	140,358	94,911	388,544	241,120
Net interest income		156,455	156,042	448,257	432,126
Other-than-temporary impairments:
Total other-than-temporary impairment losses		(784)	(993)	(4,245)	(8,555)
Portion of loss recognized in other comprehensive income		(10,684)	(10,581)	(39,431)	(34,652)
Net other-than-temporary credit impairment losses		(11,468)	(11,574)	(43,676)	(43,207)
Other investment gains (losses):
Net unrealized gains (losses) on derivatives		9,204	27,628	19,902	(51,382)
Realized gains (losses) on terminations of interest rate swaps		0	0	(16,143)	(60,616)
Net realized gains (losses) on derivatives		(7,841)	(14,268)	(28,680)	(58,934)
Net gains (losses) on derivatives		1,363	13,360	(24,921)	(170,932)
Net unrealized gains (losses) on financial instruments at fair value		19,042	32,999	159,047	80,217
Net realized gains (losses) on sales of investments		1	3,079	9,709	7,035
Gains (losses) on extinguishment of debt		(1)	(45)	(48,016)	(1,811)
Total other gains (losses)		20,405	49,393	95,819	(85,491)
Other income:
Other income		0	0	0	95,000
Total other income		0	0	0	95,000
Other expenses:
Compensation and benefits		7,533	6,911	22,759	19,087
General and administrative expenses		4,537	4,332	13,162	13,073
Servicing fees		10,715	9,788	31,193	23,139
Deal expenses		3,357	0	16,054	13,022
Total other expenses		26,142	21,031	83,168	68,321
Income (loss) before income taxes		139,250	172,830	417,232	330,107
Income taxes		18	13	172	65
Net income (loss)		139,232	172,817	417,060	330,042
Dividend on preferred stock		9,400	0	24,083	0
Net income (loss) available to common shareholders		$ 129,832	$ 172,817	$ 392,977	$ 330,042
Net income (loss) per share available to common shareholders:
Basic (usd per share)		$ 0.69	$ 0.92	$ 2.09	$ 1.76
Diluted (usd per share)		$ 0.69	$ 0.92	$ 2.09	$ 1.76
Weighted average number of common shares outstanding:
Basic (shares)		187,779,794	187,729,765	187,773,715	187,727,667
Diluted (shares)		188,192,111	187,919,792	188,176,757	187,917,694
Dividends declared per share of common stock (usd per share)		$ 0.5	$ 0.48	$ 1.5	$ 1.94

[1] Includes interest income of consolidated VIEs of $241,195 and $195,488 for the quarters ended September 30, 2017 and 2016, respectively and interest income of consolidated VIEs of $668,621 and $488,353 for the nine months ended September 30, 2017 and 2016 respectively. See Note 8 to consolidated financial statements for further discussion.

[2] Includes interest expense of consolidated VIEs of $101,856 and $70,715 for the quarters ended September 30, 2017 and 2016, respectively and interest expense of consolidated VIEs of $290,264 and $168,738 for the nine months ended September 30, 2017 and 2016 respectively. See Note 8 to consolidated financial statements for further discussion.

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CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - Non Agency Residential Mortgage Backed Securities And Securitized Loans - Variable Interest Entities, Primary Beneficiary - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest income, assets of consolidated VIEs	$ 241,195	$ 195,488	$ 668,621	$ 488,353
Interest expense, non-recourse liabilities of VIEs	$ 101,856	$ 70,715	$ 290,264	$ 168,738

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Comprehensive income (loss):
Net income (loss)	$ 139,232	$ 172,817	$ 417,060	$ 330,042
Other comprehensive income:
Unrealized gains (losses) on available-for-sale securities, net	21,370	(18,364)	59,114	94,059
Reclassification adjustment for net losses included in net income for other-than-temporary credit impairment losses	11,468	11,574	43,676	43,207
Reclassification adjustment for net realized losses (gains) included in net income	(1)	(2,680)	(7,778)	(13,354)
Other comprehensive income (loss)	32,837	(9,470)	95,012	123,912
Comprehensive income (loss) before preferred stock dividends	172,069	163,347	512,072	453,954
Dividends on preferred stock	9,400	0	24,083	0
Comprehensive income (loss) available to common stock shareholders	$ 162,669	$ 163,347	$ 487,989	$ 453,954

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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock Par Value	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Cumulative Earnings	Cumulative Distributions to Stockholders	Series A Preferred Stock Par Value	Series A Preferred Stock Par Value Preferred Stock	Series B Preferred Stock Par Value	Series B Preferred Stock Par Value Preferred Stock
Beginning Balance at Dec. 31, 2015	$ 2,946,188	$ 1,877	$ 3,366,568	$ 773,791	$ 1,891,239	$ (3,087,287)		$ 0		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	330,042				330,042
Other comprehensive income (loss)	123,912			123,912
Stock based compensation	1,375		1,375
Common dividends declared	(364,717)					(364,717)
Preferred dividends declared	0
Ending Balance at Sep. 30, 2016	3,036,800	1,877	3,367,943	897,703	2,221,281	(3,452,004)		0		0
Beginning Balance at Dec. 31, 2016	3,123,533	1,877	3,508,779	718,106	2,443,184	(3,548,471)		58		0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	417,060				417,060
Other comprehensive income (loss)	95,012			95,012
Stock based compensation	2,755	1	2,754
Common dividends declared	(282,275)					(282,275)
Preferred dividends declared	(24,083)					(24,083)	$ (9,000)		$ (15,000)
Issuance of preferred stock	314,429		314,299							130
Ending Balance at Sep. 30, 2017	$ 3,646,431	$ 1,878	$ 3,825,832	$ 813,118	$ 2,860,244	$ (3,854,829)		$ 58		$ 130

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Cash Flows From Operating Activities:
Net income	$ 417,060	$ 330,042
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
(Accretion) amortization of investment discounts/premiums, net	(17,269)	4,084
Accretion (amortization) of deferred financing costs and securitized debt discounts/premiums, net	6,649	(5,769)
Amortization of swaption premium	5,468	5,130
Net unrealized losses (gains) on derivatives	(19,902)	51,382
Margin (paid) received on derivatives	(3,948)	(41,283)
Net unrealized losses (gains) on financial instruments at fair value	(159,047)	(80,217)
Net realized losses (gains) on sales of investments	(9,709)	(7,035)
Net other-than-temporary credit impairment losses	43,676	43,207
(Gain) loss on extinguishment of debt	48,016	1,811
Equity-based compensation expense	2,755	1,375
Changes in operating assets:
Decrease (increase) in accrued interest receivable, net	(19,738)	(18,081)
Decrease (increase) in other assets	(5,076)	(36,969)
Changes in operating liabilities:
Increase (decrease) in accounts payable and other liabilities	4,635	3,905
Increase (decrease) in accrued interest payable, net	15,631	12,311
Net cash provided by (used in) operating activities	309,201	263,893
Cash Flows From Investing Activities:
Net cash provided by (used in) investing activities	(4,055,012)	(1,494,982)
Cash Flows From Financing Activities:
Proceeds from repurchase agreements	29,079,905	27,792,856
Payments on repurchase agreements	(27,970,987)	(29,414,676)
Net proceeds from preferred stock offerings	314,429	0
Proceeds from securitized debt borrowings, collateralized by loans held for investment	4,159,073	4,180,227
Payments on securitized debt borrowings, collateralized by loans held for investment	(1,564,489)	(773,875)
Payments on securitized debt borrowings, collateralized by Non-Agency RMBS	(103,415)	(146,729)
Common dividends paid	(281,832)	(364,168)
Preferred dividends paid	(26,532)	0
Net cash provided by (used in) financing activities	3,606,152	1,273,635
Net increase (decrease) in cash and cash equivalents	(139,659)	42,546
Cash and cash equivalents at beginning of period	177,714	114,062	$ 114,062
Cash and cash equivalents at end of period	38,055	156,608	177,714
Supplemental disclosure of cash flow information:
Interest received	799,808	659,249
Interest paid	366,284	234,577
Non-cash investing activities:
Payable for investments purchased	733,142	578,499
Receivable for investment sold	11,235		0
Receivable for investments sold			$ 0
Net change in unrealized gain (loss) on available-for sale securities	95,012	123,912
Non-cash financing activities:
Common dividends declared, not yet paid	95,000	90,645
Agency MBS portfolio
Cash Flows From Investing Activities:
Purchases	(1,000,336)	(810,630)
Sales	693,207	2,555,228
Principal payments	332,140	471,657
Non-agency MBS
Cash Flows From Investing Activities:
Purchases	(7,978)	(160,805)
Sales	5,045	95,399
Principal payments	459,854	402,971
Loans held for investment:
Cash Flows From Investing Activities:
Purchases	(5,835,799)	(4,745,083)
Principal payments	$ 1,298,855	$ 696,281

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Organization

9 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

Organization

Chimera Investment Corporation (the “Company”) was organized in Maryland on June 1, 2007. The Company commenced operations on November 21, 2007 when it completed its initial public offering. The Company elected to be taxed as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended, and regulations promulgated thereunder (the “Code”).

The Company conducts its operations through various subsidiaries including subsidiaries it treats as taxable REIT subsidiaries (“TRS”). In general, a TRS may hold assets and engage in activities that the Company cannot hold or engage in directly and generally may engage in any real estate or non-real estate related business. The Company currently has eight wholly owned direct subsidiaries: Chimera RMBS Whole Pool LLC, and Chimera RMBS LLC formed in June 2009; CIM Trading Company LLC (“CIM Trading”), formed in July 2010; Chimera Funding TRS LLC (“CIM Funding TRS”), a TRS formed in October 2013, Chimera CMBS Whole Pool LLC and Chimera RMBS Securities LLC formed in March 2015; Chimera Insurance Company, LLC formed in July 2015 and Chimera RR Holdings LLC formed in April 2016.

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Summary of the Significant Accounting Policies

9 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Summary of the Significant Accounting Policies

Summary of the Significant Accounting Policies

(a) Basis of Presentation and Consolidation

The accompanying consolidated financial statements and related notes of the Company have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). In the opinion of management, all adjustments considered necessary for a fair presentation of the Company's financial position, results of operations and cash flows have been included. Certain prior period amounts have been reclassified to conform to the current period's presentation.

The consolidated financial statements include, the Company’s accounts, the accounts of its wholly-owned subsidiaries, and variable interest entities (“VIEs”) in which the Company is the primary beneficiary. All intercompany balances and transactions have been eliminated in consolidation.

The Company uses securitization trusts considered to be VIEs in its securitization and re-securitization transactions. VIEs are defined as entities in which equity investors (i) do not have the characteristics of a controlling financial interest, or (ii) do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support from other parties. The entity that consolidates a VIE is known as its primary beneficiary, and is generally the entity with (i) the power to direct the activities that most significantly impact the VIEs’ economic performance, and (ii) the right to receive benefits from the VIE or the obligation to absorb losses of the VIE that could be significant to the VIE. For VIEs that do not have substantial on-going activities, the power to direct the activities that most significantly impact the VIEs’ economic performance may be determined by an entity’s involvement with the design and structure of the VIE.

The trusts are structured as pass through entities that receive principal and interest on the underlying collateral and distribute those payments to the security holders. The assets held by the securitization entities are restricted in that they can only be used to fulfill the obligations of the securitization entity. The Company’s risks associated with its involvement with these VIEs are limited to its risks and rights as a holder of the security it has retained.

Determining the primary beneficiary of a VIE requires significant judgment. The Company determined that for the securitizations it consolidates, its ownership provides the Company with the obligation to absorb losses or the right to receive benefits from the VIE that could be significant to the VIE. In addition, the Company has the power to direct the activities of the VIEs that most significantly impact the VIEs’ economic performance (“power”) such as rights to direct servicer activity or the Company was determined to have power in connection with its involvement with the purpose and design of the VIE.

The Company’s interest in the assets held by these securitization vehicles, which are consolidated on the Company’s Statements of Financial Condition, is restricted by the structural provisions of these trusts, and a recovery of the Company’s investment in the vehicles will be limited by each entity’s distribution provisions. The liabilities of the securitization vehicles, which are also consolidated on the Company’s Statements of Financial Condition, are non-recourse to the Company, and can generally only be satisfied from each securitization vehicle’s respective asset pool.

The assets of securitization entities are comprised of senior classes of residential mortgage backed securities (“RMBS”) or residential mortgage loans. See Notes 3, 4 and 8 for further discussion of the characteristics of the securities and loans in the Company’s portfolio.

(b) Statements of Financial Condition Presentation

The Company’s Consolidated Statements of Financial Condition include both the Company’s direct assets and liabilities and the assets and liabilities of consolidated securitization vehicles. Assets of each consolidated VIE can only be used to satisfy the obligations of that VIE, and the liabilities of consolidated VIEs are non-recourse to the Company. The Company is not obligated to provide, nor does it intend to provide, any financial support to these consolidated securitization vehicles. The notes to the consolidated financial statements describe the Company’s assets and liabilities including the assets and liabilities of consolidated securitization vehicles. See Note 8 for additional information related to the Company’s investments in consolidated securitization vehicles.

(c) Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Although the Company’s estimates contemplate current conditions and how it expects them to change in the future, it is reasonably possible that actual conditions could be materially different than anticipated in those estimates, which could have a material adverse impact on the Company’s results of operations and its financial condition. Management has made significant estimates including in accounting for income recognition and OTTI on Agency and Non-Agency RMBS and IO MBS (Note 3), valuation of Agency MBS and Non-Agency RMBS (Notes 3 and 5), residential mortgage loans (Note 4), securitized debt (Note 7) and derivative instruments (Notes 5 and 9). Actual results could differ materially from those estimates.

(d) Significant Accounting Policies

There have been no significant changes to the Company's accounting policies included in Note 2 to the consolidated financial statements of the Company’s Form 10-K for the year ended December 31, 2016, other than the significant accounting policies disclosed below.

Income Taxes

The Company does not have any unrecognized tax positions that would affect its financial statements or require disclosure. No accruals for penalties and interest were necessary as of September 30, 2017 or December 31, 2016.

Fair Value Disclosure

The Company has elected to account for Agency MBS investments acquired on or after July 1, 2017 under the fair value option. Under the fair value option, these investments will be carried at fair value, with changes in fair value reported in earnings (included as part of “Net unrealized gains (losses) on financial instruments at fair value”). Consistent with all other investments for which the Company has elected the fair value option, the Company will recognize revenue on a prospective basis in accordance with guidance in ASC 325-40.

All Agency MBS investments owned prior to this date will continue to be carried at fair value with changes in fair value reported in other comprehensive income (OCI) as available-for-sale investments. All revenue recognition for these Agency MBS investments owned prior to July 1, 2017 will be in accordance with ASC 310-20.

A complete discussion of the methodology utilized by the Company to estimate the fair value of its financial instruments is included in Note 5 to these consolidated financial statements.

(e) Recent Accounting Pronouncements

Derivatives and Hedging - Targeted improvements to Accounting for Hedging Activities (Topic 815)

In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging - Targeted improvements to Accounting for Hedging Activities. This update is issued with the objective of improving the financial reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its financial statements. In addition, the amendments in this update make certain targeted improvements to simplify the application of the hedge accounting guidance in current GAAP. The guidance in the ASU is effective for the Company as of January 1, 2019. Early adoption is allowed. The Company is not planning to early adopt and is currently evaluating what impact this update will have on the consolidated financial statements.

Business Combinations - (Topic 805)

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations - Clarifying the Definition of a Business. This update clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. Under the current implementation guidance in Topic 805, there are three elements of a business-inputs, processes, and outputs. While an integrated set of assets and activities (collectively referred to as a “set”) that is a business usually has outputs, outputs are not required to be present. The amendments in this Update provide a screen to determine when a set is not a business. The screen requires that when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the set is not a business. This screen reduces the number of transactions that need to be further evaluated. The guidance in the ASU is effective for the Company as of January 1, 2018. Early adoption is allowed. The amendments in this update should be applied prospectively on or after the effective date. No disclosures are required at transition. The Company is not planning to early adopt and is currently evaluating what impact this update will have on the consolidated financial statements.

Statement of Cash Flows - Restricted Cash - (Topic 230)

In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows - Restricted Cash. This update requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The amendments in this Update do not provide a definition of restricted cash or restricted cash equivalents. The guidance in the ASU is effective for the Company as of January 1, 2018. Early adoption is allowed. The amendments in this update should be applied using a retrospective transition method to each period presented. The Company is not planning to early adopt and is currently evaluating what impact this update will have on the consolidated financial statements.

Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments - (Topic 230)

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments. This update provides guidance on eight specific cash flow issues. The guidance is intended to reduce diversity in practice on those issues across all industries. The guidance in the ASU is effective for the Company as of January 1, 2018. Early adoption is allowed. The guidance is to be applied retrospectively, unless it is impracticable to do so for an issue, then the amendments related to that issue would be applied prospectively. The Company did not elect to early adopt the provisions of this update. The Company is currently evaluating what impact this update will have on the consolidated financial statements.

Financial Instruments - Credit Losses - (Topic 326)

In June 2016, the FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments. This update replaces the current model for recognizing credit losses from an incurred credit loss model to a current expected credit loss (CECL) model for instruments measured at amortized cost and requires entities to record allowances for available-for-sale (AFS) debt securities when the fair value of an AFS debt security is below the amortized cost of the asset rather than reduce the carrying amount, as the Company does under the current OTTI model. This update also simplifies the accounting model for purchased credit-impaired debt securities and loans. The changes in the allowances created in accordance with this update will be recorded in earnings. The update also expands the disclosure requirements regarding the Company's assumptions, models, and methods for estimating the expected credit losses. In addition, the Company will disclose the amortized cost balance for each class of financial asset by credit quality indicator, disaggregated by the year of origination. The guidance in the ASU is effective for the Company as of January 1, 2020. Early adoption is allowed, beginning January 1, 2019. The standard requires entities to record a cumulative-effect adjustment to the statement of financial position as of the beginning of the first reporting period in which the guidance is effective. The Company is currently evaluating what impact this update will have on the consolidated financial statements.

Share Based Payments - (Topic 718)

In March 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting. Under this update companies will no longer record excess tax benefits and certain tax deficiencies associated with an award of equity instruments in additional paid-in capital. Instead, they will record all excess tax benefits and tax deficiencies as income tax expense or benefit in the income statement when the awards vest or are settled, and additional paid-in capital pools will be eliminated. The updated guidance will also allow the Company to repurchase more shares than it can today for tax withholding purposes without triggering liability accounting and to make a policy election to account for forfeitures as they occur. The guidance is to be applied using a modified retrospective transition method with a cumulative-effect adjustment recorded in retained earnings. The Company has adopted this guidance as of January 1, 2017. The adoption of this guidance did not have a significant impact on the Company's consolidated financial statements.

Contingent Put and Call Options in Debt Instruments - (Topic 815)

In March 2016, the FASB issued ASU No. 2016-06, Contingent Put and Call Options in Debt Instruments Accounting.  This update clarifies that when a call or put option in a debt instrument can accelerate the repayment of principal on the debt instrument, a reporting entity does not need to assess whether the contingent event that triggers the ability to exercise the call or put option is related to interest rates or credit risk in determining whether the option should be accounted for separately as a derivative. The new guidance applies to existing debt instruments (or hybrid financial instruments that are determined to have a debt host) using a modified retrospective method as of the beginning of the period of adoption. The Company has adopted this guidance as of January 1, 2017. The adoption of this guidance did not have a significant impact on the Company’s consolidated financial statements.

Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships - (Topic 815)

In March 2016, the FASB issued ASU No. 2016-05, Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships. The amendments in this update clarify that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument under Topic 815 does not, in and of itself, require de-designation of that hedging relationship provided that all other hedge accounting criteria continue to be met. The Company has adopted this guidance as of January 1, 2017. The Company currently does not apply hedge accounting for GAAP reporting purposes, therefore this guidance did not have a significant impact on the Company’s consolidated financial statements.

Financial Instruments-Overall (Subtopic 825-10)

In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. This update changes how the Company will present changes in the fair value of financial liabilities measured under the fair value option that are attributable to our own credit.  Under the updated guidance, the Company will record changes in instrument-specific credit risk for financial liabilities measured under the fair value option in other comprehensive income.  The update also requires fair value measurement for equity investments that do not result in consolidation and are not accounted for under the equity method to be measured at fair value with any changes in fair value recognized in net income.  The update also eliminates the requirement to disclose the methods and significant assumptions used to estimate the fair value of financial instruments measured at amortized cost. In addition, the Company will have to use the exit price notion when measuring the fair value of financial instruments measured at amortized cost for disclosure purposes.  The guidance in the ASU is effective for the Company as of January 1, 2018. Early adoption for certain provisions of the update is allowed.  Any adjustment as a result of the adoption of this standard will be recorded as a cumulative-effect adjustment to beginning retained earnings as of the first period in which the guidance is adopted.  The Company did not elect to early adopt the provisions of this update and is currently evaluating what impact this update will have on the consolidated financial statements.

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Mortgage-Backed Securities

9 Months Ended

Sep. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Mortgage-Backed Securities

Mortgage-Backed Securities

The Company classifies its Non-Agency RMBS as senior, senior IO, subordinated, or subordinated IO. The Company also invests in residential, commercial and IO Agency MBS. Senior interests in Non-Agency RMBS are considered to be entitled to the first principal repayments in their pro-rata ownership interests at the acquisition date. The tables below present amortized cost, fair value and unrealized gain/losses of Company's MBS investments as of September 30, 2017 and December 31, 2016.

			September 30, 2017
			(dollars in thousands)
	Principal or Notional Value		Total Premium		Total Discount			Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses			Net Unrealized Gain/(Loss)
Non-Agency RMBS
Senior	$	2,821,535	$	224	$	(1,282,801	)	$	1,538,958	$	2,304,611	$	765,653	$	—		$	765,653
Senior, interest-only	4,948,265		267,964		—			267,964		212,662		13,620		(68,922		)	(55,302		)
Subordinated	531,526		10,764		(188,169		)	354,121		421,487		67,430		(64		)	67,366
Subordinated, interest-only	256,286		12,968		—			12,968		11,588		860		(2,240		)	(1,380		)
Agency MBS
Residential	2,316,838		128,388		—			2,445,226		2,428,112		7,606		(24,720		)	(17,114		)
Commercial	1,774,802		44,913		(4,732		)	1,814,983		1,811,950		13,467		(16,500		)	(3,033		)
Interest-only	3,176,110		121,353		—			121,353		114,810		1,226		(7,769		)	(6,543		)
Total	$	15,825,362	$	586,574	$	(1,475,702	)	$	6,555,573	$	7,305,220	$	869,862	$	(120,215	)	$	749,647

			December 31, 2016
			(dollars in thousands)
	Principal or Notional Value		Total Premium		Total Discount			Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses			Net Unrealized Gain/(Loss)
Non-Agency RMBS
Senior	$	3,190,947	$	231	$	(1,412,058	)	$	1,779,120	$	2,511,003	$	732,133	$	(250	)	$	731,883
Senior, interest-only	5,648,339		292,396		—			292,396		253,539		18,674		(57,531		)	(38,857		)
Subordinated	673,259		16,352		(212,734		)	476,877		553,498		77,857		(1,236		)	76,621
Subordinated, interest-only	266,927		13,878		—			13,878		12,024		—		(1,854		)	(1,854		)
Agency MBS
Residential	2,594,570		149,872		—			2,744,442		2,705,978		11,235		(49,699		)	(38,464		)
Commercial	1,331,543		37,782		(2,688		)	1,366,637		1,316,975		175		(49,837		)	(49,662		)
Interest-only	3,356,491		152,175		—			152,175		144,800		1,893		(9,268		)	(7,375		)
Total	$	17,062,076	$	662,686	$	(1,627,480	)	$	6,825,525	$	7,497,817	$	841,967	$	(169,675	)	$	672,292

The table below presents changes in accretable yield, or the excess of the security’s cash flows expected to be collected over the Company’s investment, solely as it pertains to the Company’s Non-Agency RMBS portfolio accounted for according to the provisions of ASC 310-30.

	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)						(dollars in thousands)
Balance at beginning of period	$	1,383,188		$	1,714,592		$	1,550,110		$	1,742,744
Purchases	8,196			18,316			18,380			60,915
Yield income earned	(66,042		)	(69,850		)	(202,618		)	(141,256		)
Reclassification (to) from non-accretable difference	53,884			(29,490		)	15,777			(2,031		)
Sales and deconsolidation	(17,755		)	(12,907		)	(20,178		)	(39,711		)
Balance at end of period	$	1,361,471		$	1,620,661		$	1,361,471		$	1,620,661

The table below presents the outstanding principal balance and related amortized cost at September 30, 2017 and December 31, 2016 as it pertains to the Company’s Non-Agency RMBS portfolio accounted for according to the provisions of ASC 310-30.

	For the Quarter Ended		For the Year Ended
	September 30, 2017		December 31, 2016
	(dollars in thousands)
Outstanding principal balance:
Beginning of period	$	2,910,151	$	3,550,698
End of period	$	2,772,746	$	3,138,265
Amortized cost:
Beginning of period	$	1,546,656	$	1,958,726
End of period	$	1,449,531	$	1,695,079

The following tables present the gross unrealized losses and estimated fair value of the Company’s RMBS by length of time that such securities have been in a continuous unrealized loss position at September 30, 2017 and December 31, 2016. All securities in an unrealized loss position have been evaluated by the Company for OTTI as discussed in Note 2(d) of 2016, Form 10-K.

						September 30, 2017
						(dollars in thousands)
	Unrealized Loss Position for Less than 12 Months						Unrealized Loss Position for 12 Months or More						Total
	Estimated Fair Value		Unrealized Losses			Number of Securities	Estimated Fair Value		Unrealized Losses			Number of Securities	Estimated Fair Value		Unrealized Losses			Number of Securities
Non-Agency RMBS
Senior	$	—	$	—		—	$	—	$	—		—	$	—	$	—		—
Senior, interest-only	82,130		(15,487		)	54	73,232		(53,435		)	93	155,362		(68,922		)	147
Subordinated	5,353		(64		)	7	—		—			1	5,353		(64		)	8
Subordinated, interest-only	574		(331		)	2	4,220		(1,909		)	2	4,794		(2,240		)	4
Agency MBS
Residential	1,932,140		(17,187		)	95	234,050		(7,533		)	11	2,166,190		(24,720		)	106
Commercial	876,181		(15,291		)	241	30,311		(1,209		)	1	906,492		(16,500		)	242
Interest-only	29,250		(1,003		)	12	58,031		(6,766		)	21	87,281		(7,769		)	33
Total	$	2,925,628	$	(49,363	)	411	$	399,844	$	(70,852	)	129	$	3,325,472	$	(120,215	)	540

						December 31, 2016
						(dollars in thousands)
	Unrealized Loss Position for Less than 12 Months						Unrealized Loss Position for 12 Months or More						Total
	Estimated Fair Value		Unrealized Losses			Number of Securities	Estimated Fair Value		Unrealized Losses			Number of Securities	Estimated Fair Value		Unrealized Losses			Number of Securities
Non-Agency RMBS
Senior	$	12,384	$	(250	)	3	$	—	$	—		—	$	12,384	$	(250	)	3
Senior, interest-only	96,399		(13,600		)	62	78,516		(43,931		)	86	174,915		(57,531		)	148
Subordinated	56,015		(412		)	7	2,826		(824		)	4	58,841		(1,236		)	11
Subordinated, interest-only	748		(230		)	2	11,276		(1,624		)	3	12,024		(1,854		)	5
Agency MBS
Residential	2,338,910		(48,084		)	106	54,943		(1,615		)	1	2,393,853		(49,699		)	107
Commercial	1,247,923		(45,802		)	646	51,733		(4,035		)	46	1,299,656		(49,837		)	692
Interest-only	63,506		(2,170		)	20	52,963		(7,098		)	16	116,469		(9,268		)	36
Total	$	3,815,885	$	(110,548	)	846	$	252,257	$	(59,127	)	156	$	4,068,142	$	(169,675	)	1002

At September 30, 2017, the Company did not intend to sell any of its RMBS that were in an unrealized loss position, and it was not more likely than not that the Company would be required to sell these RMBS before recovery of their amortized cost basis, which may be at their maturity. With respect to RMBS held by consolidated VIEs, the ability of any entity to cause the sale by the VIE prior to the maturity of these RMBS is either expressly prohibited, not probable, or is limited to specified events of default, none of which have occurred as of September 30, 2017.

Gross unrealized losses on the Company’s Agency residential and commercial MBS (excluding Agency MBS which are reported at fair value with changes in fair value recorded in earnings) were $37 million and $100 million as of September 30, 2017 and December 31, 2016, respectively. Given the inherent credit quality of Agency MBS, the Company does not consider any of the current impairments on its Agency MBS to be credit related. In evaluating whether it is more likely than not that it will be required to sell any impaired security before its anticipated recovery, which may be at their maturity, the Company considers the significance of each investment, the amount of impairment, the projected future performance of such impaired securities, as well as the Company’s current and anticipated leverage capacity and liquidity position. Based on these analyses, the Company determined that at September 30, 2017 and December 31, 2016, unrealized losses on its Agency MBS were temporary.

Gross unrealized losses on the Company’s Non-Agency RMBS (excluding Non-Agency MBS which are reported at fair value with changes in fair value recorded in earnings) were $45 thousand and $485 thousand at September 30, 2017 and December 31, 2016, respectively. Based upon the most recent evaluation, the Company does not consider these unrealized losses to be indicative of OTTI and does not believe that these unrealized losses are credit related, but rather are due to other factors. The Company has reviewed its Non-Agency RMBS that are in an unrealized loss position to identify those securities with losses that are other-than-temporary based on an assessment of changes in cash flows expected to be collected for such RMBS, which considers recent bond performance and expected future performance of the underlying collateral.

A summary of the OTTI included in earnings for the quarters and nine months ended September 30, 2017 and 2016 are presented below.

	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)
Total other-than-temporary impairment losses	$	(784	)	$	(993	)	$	(4,245	)	$	(8,555	)
Portion of loss recognized in other comprehensive income (loss)	(10,684		)	(10,581		)	(39,431		)	(34,652		)
Net other-than-temporary credit impairment losses	$	(11,468	)	$	(11,574	)	$	(43,676	)	$	(43,207	)

The following table presents a roll forward of the credit loss component of OTTI on the Company’s Non-Agency RMBS for which a portion of loss was previously recognized in OCI. The table delineates between those securities that are recognizing OTTI for the first time as opposed to those that have previously recognized OTTI.

	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)
Cumulative credit loss beginning balance	$	571,639		$	546,187		$	556,485		$	529,112
Additions:
Other-than-temporary impairments not previously recognized	—			6,184			12,399			17,137
Reductions for securities sold or deconsolidated during the period	(4,965		)	(2,630		)	(12,405		)	(6,890		)
Increases related to other-than-temporary impairments on securities with previously recognized other-than-temporary impairments	11,468			5,390			29,302			26,069
Reductions for increases in cash flows expected to be collected over the remaining life of the securities	(3,241		)	(1,494		)	(10,880		)	(11,791		)
Cumulative credit impairment loss ending balance	$	574,901		$	553,637		$	574,901		$	553,637

Cash flows generated to determine net other-than-temporary credit impairment losses recognized in earnings are estimated using significant unobservable inputs. The significant inputs used to measure the component of OTTI recognized in earnings for the Company’s Non-Agency RMBS for the periods reported are summarized as follows:

	For the Nine Months Ended
	September 30, 2017	September 30, 2016
Loss Severity
Weighted Average	67%	59%
Range	28% - 89%	25% - 85%
60+ days delinquent
Weighted Average	21%	21%
Range	11% - 27%	0% - 40%
Credit Enhancement (1)
Weighted Average	15%	29%
Range	0% - 50%	0% - 100%
3 Month CPR
Weighted Average	13%	5%
Range	2% - 24%	0% - 19%
12 Month CPR
Weighted Average	13%	4%
Range	4% - 19%	0% - 21%

(1)Calculated as the combined credit enhancement to the Re-REMIC and underlying from each of their respective capital structures.

The following tables present a summary of unrealized gains and losses at September 30, 2017 and December 31, 2016. IO MBS included in the tables below represent the right to receive a specified portion of the contractual interest cash flows of the underlying principal balance of specific securities. At September 30, 2017, IO MBS had a net unrealized loss of $63 million and had an amortized cost of $402 million. At December 31, 2016, IO MBS had a net unrealized loss of $48 million and had an amortized cost of $458 million. The fair value of IOs at September 30, 2017 and December 31, 2016 was $339 million and $410 million, respectively. All changes in fair value of IOs are reflected in Net Income in the Consolidated Statements of Operations.

			September 30, 2017
			(dollars in thousands)
	Gross Unrealized Gain Included in Accumulated Other Comprehensive Income		Gross Unrealized Gain Included in Cumulative Earnings		Total Gross Unrealized Gain		Gross Unrealized Loss Included in Accumulated Other Comprehensive Income			Gross Unrealized Loss Included in Cumulative Earnings			Total Gross Unrealized Loss
Non-Agency RMBS
Senior	$	765,653	$	—	$	765,653	$	—		$	—		$	—
Senior, interest-only	—		13,620		13,620		—			(68,922		)	(68,922		)
Subordinated	63,348		4,082		67,430		(45		)	(19		)	(64		)
Subordinated, interest-only	—		860		860		—			(2,240		)	(2,240		)
Agency MBS
Residential	7,606		—		7,606		(22,263		)	(2,457		)	(24,720		)
Commercial	13,339		128		13,467		(14,520		)	(1,980		)	(16,500		)
Interest-only	—		1,226		1,226		—			(7,769		)	(7,769		)
Total	$	849,946	$	19,916	$	869,862	$	(36,828	)	$	(83,387	)	$	(120,215	)

			December 31, 2016
			(dollars in thousands)
	Gross Unrealized Gain Included in Accumulated Other Comprehensive Income		Gross Unrealized Gain Included in Cumulative Earnings		Total Gross Unrealized Gain		Gross Unrealized Loss Included in Accumulated Other Comprehensive Income			Gross Unrealized Loss Included in Cumulative Earnings			Total Gross Unrealized Loss
Non-Agency RMBS
Senior	$	732,133	$	—	$	732,133	$	(250	)	$	—		$	(250	)
Senior, interest-only	—		18,674		18,674		—			(57,531		)	(57,531		)
Subordinated	74,584		3,273		77,857		(235		)	(1,001		)	(1,236		)
Subordinated, interest-only	—		—		—		—			(1,854		)	(1,854		)
Agency MBS
Residential	11,235		—		11,235		(49,699		)	—			(49,699		)
Commercial	175		—		175		(49,837		)	—			(49,837		)
Interest-only	—		1,893		1,893		—			(9,268		)	(9,268		)
Total	$	818,127	$	23,840	$	841,967	$	(100,021	)	$	(69,654	)	$	(169,675	)

Changes in prepayments, actual cash flows, and cash flows expected to be collected, among other items, are affected by the collateral characteristics of each asset class. The Company chooses assets for the portfolio after carefully evaluating each investment’s risk profile.

The following tables provide a summary of the Company’s MBS portfolio at September 30, 2017 and December 31, 2016.

	September 30, 2017
	Principal or Notional Value at Period-End (dollars in thousands)		Weighted Average Amortized Cost Basis		Weighted Average Fair Value		Weighted Average Coupon		Weighted Average Yield at Period-End (1)
Non-Agency RMBS
Senior	$	2,821,535	$	54.54	$	81.68	4.4	%	16.7	%
Senior, interest-only	4,948,265		5.42		4.30		1.4	%	7.8	%
Subordinated	531,526		66.62		79.30		4.1	%	9.2	%
Subordinated, interest-only	256,286		5.06		4.52		1.0	%	8.4	%
Agency MBS
Residential pass-through	2,316,838		105.54		104.80		3.8	%	2.9	%
Commercial pass-through	1,774,802		102.26		102.09		3.6	%	3.2	%
Interest-only	3,176,110		3.82		3.61		0.7	%	3.5	%

(1) Bond Equivalent Yield at period end.

	December 31, 2016
	Principal or Notional Value at Period-End (dollars in thousands)		Weighted Average Amortized Cost Basis		Weighted Average Fair Value		Weighted Average Coupon		Weighted Average Yield at Period-End (1)
Non-Agency RMBS
Senior	$	3,190,947	$	55.76	$	78.69	4.3	%	15.5	%
Senior, interest-only	5,648,339		5.18		4.49		1.5	%	11.7	%
Subordinated	673,259		70.83		82.21		3.8	%	9.2	%
Subordinated, interest-only	266,927		5.20		4.50		1.1	%	13.5	%
Agency MBS
Residential pass-through	2,594,570		105.78		104.29		3.9	%	3.0	%
Commercial pass-through	1,331,543		102.64		98.91		3.6	%	2.9	%
Interest-only	3,356,491		4.53		4.31		0.8	%	3.5	%

(1) Bond Equivalent Yield at period end.

The following table presents the weighted average credit rating of the Company’s Non-Agency RMBS portfolio at September 30, 2017 and December 31, 2016.

	September 30, 2017		December 31, 2016
AAA	0.3	%	0.3	%
AA	0.3	%	0.3	%
A	0.6	%	0.7	%
BBB	0.4	%	0.7	%
BB	2.9	%	3.0	%
B	2.1	%	3.9	%
Below B	62.4	%	67.2	%
Not Rated	31.0	%	23.9	%
Total	100.0	%	100.0	%

Actual maturities of MBS are generally shorter than the stated contractual maturities. Actual maturities of the Company’s MBS are affected by the contractual lives of the underlying mortgages, periodic payments of principal and prepayments of principal. The following tables provide a summary of the fair value and amortized cost of the Company’s MBS at September 30, 2017 and December 31, 2016 according to their estimated weighted-average life classifications. The weighted-average lives of the MBS in the tables below are based on lifetime expected prepayment rates using an industry prepayment model for the Agency MBS portfolio and the Company’s prepayment assumptions for the Non-Agency RMBS. The prepayment model considers current yield, forward yield, steepness of the interest rate curve, current mortgage rates, mortgage rates of the outstanding loan, loan age, margin, and volatility.

	September 30, 2017
	(dollars in thousands)
	Weighted Average Life
	Less than one year		Greater than one year and less than five years		Greater than five years and less than ten years		Greater than ten years		Total
Fair value
Non-Agency RMBS
Senior	$	5,611	$	757,644	$	881,904	$	659,452	$	2,304,611
Senior interest-only	113		55,264		72,087		85,198		212,662
Subordinated	—		83,242		183,777		154,468		421,487
Subordinated interest-only	—		133		11,455		—		11,588
Agency MBS
Residential	—		32,666		2,395,446		—		2,428,112
Commercial	—		46,263		16,817		1,748,870		1,811,950
Interest-only	—		82,985		27,122		4,703		114,810
Total fair value	$	5,724	$	1,058,197	$	3,588,608	$	2,652,691	$	7,305,220
Amortized cost
Non-Agency RMBS
Senior	$	5,457	$	549,443	$	563,522	$	420,536	$	1,538,958
Senior interest-only	1,301		78,615		91,461		96,587		267,964
Subordinated	—		67,164		152,048		134,909		354,121
Subordinated interest-only	—		152		12,816		—		12,968
Agency MBS
Residential	—		33,035		2,412,191		—		2,445,226
Commercial	—		47,639		17,216		1,750,128		1,814,983
Interest-only	—		87,733		29,200		4,420		121,353
Total amortized cost	$	6,758	$	863,781	$	3,278,454	$	2,406,580	$	6,555,573

	December 31, 2016
	(dollars in thousands)
	Weighted Average Life
	Less than one year		Greater than one year and less than five years		Greater than five years and less than ten years		Greater than ten years		Total
Fair value
Non-Agency RMBS
Senior	$	25,612	$	508,979	$	1,267,000	$	709,412	$	2,511,003
Senior interest-only	417		37,796		115,780		99,546		253,539
Subordinated	—		94,793		238,630		220,075		553,498
Subordinated interest-only	—		—		12,024		—		12,024
Agency MBS
Residential	—		429,869		2,276,109		—		2,705,978
Commercial	—		47,354		16,833		1,252,788		1,316,975
Interest-only	—		75,863		63,715		5,222		144,800
Total fair value	$	26,029	$	1,194,654	$	3,990,091	$	2,287,043	$	7,497,817
Amortized cost
Non-Agency RMBS
Senior	$	21,423	$	403,250	$	868,624	$	485,823	$	1,779,120
Senior interest-only	1,992		50,252		134,642		105,510		292,396
Subordinated	—		76,287		195,538		205,052		476,877
Subordinated interest-only	—		—		13,878		—		13,878
Agency MBS
Residential	—		438,270		2,306,172		—		2,744,442
Commercial	—		49,027		17,247		1,300,363		1,366,637
Interest-only	—		77,598		69,333		5,244		152,175
Total amortized cost	$	23,415	$	1,094,684	$	3,605,434	$	2,101,992	$	6,825,525

The Non-Agency RMBS portfolio is subject to credit risk. The Non-Agency RMBS portfolio is primarily collateralized by Alt-A first lien mortgages. An Alt-A mortgage is a type of U.S. mortgage that, for various reasons, is considered riskier than A-paper, or prime, and less risky than subprime, the riskiest category. Alt-A interest rates, which are determined by credit risk, therefore tend to be between those of prime and subprime home loans. Typically, Alt-A mortgages are characterized by borrowers with less than full documentation, lower credit scores and higher loan-to-value ratios. At origination of the loan, Alt-A mortgage securities are defined as Non-Agency RMBS where (i) the underlying collateral has weighted average FICO scores between 680 and 720 or (ii) the FICO scores are greater than 720 and RMBS have 30% or less of the underlying collateral composed of full documentation loans. At September 30, 2017 and December 31, 2016, 69% and 68% of the Non-Agency RMBS collateral was classified as Alt-A, respectively. At September 30, 2017 and December 31, 2016, 11% and 14% of the Non-Agency RMBS collateral was classified as prime, respectively. The remaining Non-Agency RMBS collateral is classified as subprime.

The Non-Agency RMBS in the Portfolio have the following collateral characteristics at September 30, 2017 and December 31, 2016.

	September 30, 2017				December 31, 2016
Weighted average maturity (years)		20.9				21.6
Weighted average amortized loan to value (1)		65.1		%		66.5		%
Weighted average FICO (2)		674				675
Weighted average loan balance (in thousands)		$	320			$	319
Weighted average percentage owner occupied		83.9		%		83.2		%
Weighted average percentage single family residence		65.7		%		65.8		%
Weighted average current credit enhancement		2.2		%		2.3		%
Weighted average geographic concentration of top four states	CA	32.0		%	CA	32.1		%
	NY	8.4		%	FL	8.1		%
	FL	8.2		%	NY	7.9		%
	NJ	2.7		%	NJ	2.7		%

(1) Value represents appraised value of the collateral at the time of loan origination.

(2) FICO as determined at the time of loan origination.

The table below presents the origination year of the underlying loans related to the Company’s portfolio of Non-Agency RMBS at September 30, 2017 and December 31, 2016.

Origination Year	September 30, 2017		December 31, 2016
2003 and prior	3.6	%	3.6	%
2004	4.8	%	4.2	%
2005	19.7	%	20.2	%
2006	39.8	%	38.0	%
2007	29.6	%	31.3	%
2008	1.7	%	1.8	%
2009 and later	0.8	%	0.9	%
Total	100.0	%	100.0	%

Gross realized gains and losses are recorded in “Net realized gains (losses) on sales of investments” on the Company’s Consolidated Statements of Operations. The proceeds and gross realized gains and gross realized losses from sales of investments for the quarters and nine months ended September 30, 2017 and 2016 are as follows:

	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)
Proceeds from sales	$	598,752		$	58,036		$	772,496		$	2,697,239
Gross realized gains	6,902			3,622			17,468			16,798
Gross realized losses	(6,901		)	(543		)	(7,759		)	(9,763		)
Net realized gain (loss)	$	1		$	3,079		$	9,709		$	7,035

Included in the gross realized gains for the quarter and nine months ended September 30, 2017 in the table above are exchanges of securities with a fair value of $36 million and $63 million, respectively. The Company exchanged its investment in a re-remic security for the underlying collateral supporting the group related to the exchanged asset. These exchanges were treated as non-cash sales and purchases and resulted in a realized gain of $4 million and $9 million, respectively, reflected in earnings for the quarter and nine months ended September 30, 2017. For the quarter and nine months ended September 30, 2016, the fair value of these exchanges of securities was $30 million and $47 million and resulted in a realized gain of $2 million and $1 million, respectively.

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Loans Held for Investment

9 Months Ended

Sep. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Loans Held for Investment

Loans Held for Investment

The Loans held for investment is comprised primarily of loans collateralized by seasoned subprime residential mortgages. Additionally, it includes non-conforming, single family, owner occupied, jumbo, prime residential mortgages.

At September 30, 2017, all Loans held for investment are carried at fair value. See Note 5 for a discussion on how the Company determines the fair values of the Loans held for investment. As changes in the fair value of these loans are reflected in earnings, the Company does not estimate or record a loan loss provision. The total amortized cost of our Loans held for investments was $13.1 billion and $8.6 billion as of September 30, 2017 and December 31, 2016, respectively.

The following table provides a summary of the changes in the carrying value of Loans held for investment at fair value at September 30, 2017 and December 31, 2016:

	For the Nine Months Ended			For the Year Ended
	September 30, 2017			December 31, 2016
	(dollars in thousands)
Balance, beginning of period	$	8,753,653		$	4,768,416
Purchases	5,835,799			4,897,370
Principal paydowns	(1,298,856		)	(1,022,414		)
Sales and settlements	2,942			5,007
Net periodic accretion (amortization)	(27,310		)	(41,363		)
Change in fair value	271,824			146,637
Balance, end of period	$	13,538,052		$	8,753,653

The primary cause of the change in fair value is due to changes in credit risk of the portfolio.

Residential mortgage loans

The loan portfolio for all residential mortgages were originated during the following years:

Origination Year	September 30, 2017		December 31, 2016
2002 and prior	7.7	%	8.9	%
2003	6.9	%	5.2	%
2004	15.3	%	11.9	%
2005	20.9	%	20.5	%
2006	21.8	%	22.0	%
2007	18.8	%	20.9	%
2008	5.9	%	6.5	%
2009	0.6	%	0.6	%
2010 and later	2.1	%	3.5	%
Total	100.0	%	100.0	%

The following table presents a summary of key characteristics of the residential loan portfolio at September 30, 2017 and December 31, 2016:

	September 30, 2017				December 31, 2016
Number of loans		147,340				95,155
Weighted average maturity (years)		18.8				19.8
Weighted average loan to value (1)		87.9		%		86.9		%
Weighted average FICO (1)		629				627
Weighted average loan balance (in thousands)		$	90			$	93
Weighted average percentage owner occupied		94.0		%		96.6		%
Weighted average percentage single family residence		85.0		%		85.0		%
Weighted average geographic concentration of top five states	CA	9.2		%	CA	10.0		%
	FL	7.1		%	FL	6.7		%
	OH	6.2		%	OH	6.5		%
	PA	5.6		%	VA	5.9		%
	VA	5.4		%	NC	5.1		%

(1) As provided by the Trustee.

The following table summarizes the outstanding principal balance of the residential loan portfolio which are 30 days delinquent and greater as reported by the servicer at September 30, 2017 and December 31, 2016.

	30 Days Delinquent	60 Days Delinquent	90+ Days Delinquent	Bankruptcy	Foreclosure	REO	Total	Unpaid Principal/Notional
	(dollars in thousands)
September 30, 2017	$462,865	$157,872	$294,458	$230,435	$172,129	$30,306	$1,348,065	$13,327,252
% of Unpaid Principal/Notional	3.5%	1.2%	2.2%	1.7%	1.3%	0.2%	10.1%
December 31, 2016	$363,899	$140,495	$190,991	$207,364	$203,265	$40,709	$1,146,723	$8,868,783
% of Unpaid Principal/Notional	4.1%	1.6%	2.2%	2.3%	2.3%	0.5%	12.9%

The fair value of residential mortgage loans 90 days or more past due was $591 million and $449 million as of September 30, 2017 and December 31, 2016, respectively.

Real estate owned

Real estate owned (“REO”) represents properties which the Company has received the legal title of the property to satisfy the outstanding loan. REO is re-categorized from loan to REO when the Company takes legal title of the property. REO assets are measured and reported at the estimated fair value less the estimated cost to sell at the end of each reporting period. At the time the asset is re-categorized, any difference between the previously recorded loan balance and the carrying value of the REO at the time the Company takes legal title of the property, is recognized as a loss. All REO assets of the Company are held-for-sale and it is the Company’s intention to sell the property in the shortest time possible to maximize their return and recovery on the previously recorded loan. The carrying value of REO assets at September 30, 2017 and December 31, 2016 was $10 million and $13 million, respectively, and were recorded in Other Assets on the Company’s consolidated statements of financial condition.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The Company applies fair value guidance in accordance with GAAP to account for its financial instruments. The Company categorizes its financial instruments, based on the priority of the inputs to the valuation technique, into a three-level fair value hierarchy. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). If the inputs used to measure the financial instruments fall within different levels of the hierarchy, the categorization is based on the lowest level input that is significant to the fair value measurement of the instrument. Financial assets and liabilities recorded at fair value on the Consolidated Statements of Financial Condition or disclosed in the related notes are categorized based on the inputs to the valuation techniques as follows:

Level 1 – inputs to the valuation methodology are quoted prices (unadjusted) for identical assets and liabilities in active markets.

Level 2 – inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

Level 3 – inputs to the valuation methodology are unobservable and significant to fair value.

Fair value measurements categorized within Level 3 are sensitive to changes in the assumptions or methodology used to determine fair value and such changes could result in a significant increase or decrease in the fair value. Any changes to the valuation methodology are reviewed by management to ensure the changes are appropriate. As markets and products evolve and the pricing for certain products becomes more transparent, the Company will continue to refine its valuation methodologies. The methodology utilized by the Company for the periods presented is unchanged. The methods used to produce a fair value calculation may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Company believes its valuation methods are appropriate and consistent with other market participants. Using different methodologies, or assumptions, to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. The Company uses inputs that are current as of the measurement date, which may include periods of market dislocation, during which price transparency may be reduced.

During times of market dislocation, the observability of prices and inputs can be difficult for certain investments. If third party pricing services are unable to provide a price for an asset, or if the price provided by them is deemed unreliable by the Company, then the asset will be valued at its fair value as determined by the Company without validation to third-party pricing. Illiquid investments typically experience greater price volatility as an active market does not exist. Observability of prices and inputs can vary significantly from period to period and may cause instruments to change classifications within the three level hierarchy.

A description of the methodologies utilized by the Company to estimate the fair value of its financial instruments by instrument class follows:

Agency MBS and Non-Agency RMBS

The Company determines the fair value of all of its investment securities based on discounted cash flows utilizing an internal pricing model that incorporates factors such as coupon, prepayment speeds, loan size, collateral composition, borrower characteristics, expected interest rates, life caps, periodic caps, reset dates, collateral seasoning, delinquency, expected losses, expected default severity, credit enhancement, and other pertinent factors. To corroborate that the estimates of fair values generated by these internal models are reflective of current market prices, the Company compares the fair values generated by the model to non-binding independent prices provided by two independent third party pricing services. For certain highly liquid asset classes, such as Agency fixed-rate pass-through bonds, the Company’s valuations are also compared to quoted prices for To-Be-Announced (“TBA”) securities.

Each quarter the Company develops thresholds which are determined utilizing current bid/ask spreads, liquidity, price volatility and other factors as appropriate. If internally developed model prices differ from the independent prices provided by greater than a market derived predetermined threshold for the period, the Company highlights these differences for further review, both internally and with the third party pricing service. The Company obtains the inputs used by the third party pricing services and compares them to the Company’s inputs. The Company updates its own inputs if the Company determines the third party pricing inputs more accurately reflect the current market environment. If the Company believes that its internally developed inputs more accurately reflect the current market environment, it will request that the third party pricing service review market factors that may not have been considered by the third party pricing service and provide updated prices. The Company reconciles and resolves all pricing differences in excess of the predetermined thresholds before a final price is established. At September 30, 2017, four investment holdings with an internally developed fair value of $21 million had a difference between the model generated prices and third party prices provided in excess of the derived predetermined threshold for the period. The internally developed prices were $17 million lower than the third party prices provided of $38 million. After review and discussion, the Company affirmed and valued the investments at the lower internally developed prices. No other differences were noted at September 30, 2017 in excess of the derived predetermined threshold for the period. At December 31, 2016, ten investment holdings with an internally developed fair value of $123 million had a difference between the model generated prices and third party prices provided in excess of the derived predetermined threshold for the period. The internally developed prices were $16 million higher than the third party prices provided of $107 million. After review and discussion, the Company affirmed and valued the investments at the higher internally developed prices.

The Company’s estimate of prepayment, default and severity curves all involve judgment and assumptions that are deemed to be significant to the fair value measurement process, which renders the resulting Non-Agency RMBS fair value estimates Level 3 inputs in the fair value hierarchy. As the fair values of Agency MBS are more observable, these investments are classified as level 2 in the fair value hierarchy.

Interest-Only MBS:

The Company accounts for the IO MBS strips at fair value with changes in fair value reported in earnings. The IO MBS strips are included in MBS, at fair value, on the accompanying Consolidated Statements of Financial Condition.

Included in Non-Agency RMBS, at fair value on the Consolidated Statements of Financial Condition are IO MBS strips carried at fair value with changes in fair value reflected in earnings of $224 million and $266 million as of September 30, 2017 and December 31, 2016. Included in Agency MBS, at fair value on the Consolidated Statements of Financial Condition are IO MBS strips carried at fair value with changes in fair value reflected in earnings of $115 million and $145 million as of September 30, 2017 and December 31, 2016. Interest income on all IO MBS securities was $7 million and $10 million for the quarters ended September 30, 2017 and 2016, respectively. Interest income reported on all IO MBS securities was $24 million and $32 million for the nine months ended September 30, 2017 and 2016, respectively.

Agency MBS:

The Company has elected to account for Agency MBS investments acquired on or after July 1, 2017 under the fair value option. Under the fair value option, these investments will be carried at fair value, with changes in fair value reported in earnings (included as part of “Net unrealized gains (losses) on financial instruments at fair value”). Consistent with all other investments for which the Company has elected the fair value option, the Company will recognize revenue on a prospective basis in accordance with guidance in ASC 325-40.

All Agency MBS investments owned prior to this date will continue to be carried at fair value with changes in fair value reported in other comprehensive income (OCI) as available-for-sale investments, consistent with the Company’s current accounting practices. All revenue recognition for these Agency MBS investments owned prior to July 1, 2017 will be in accordance with ASC 310-20, per the Company’s accounting practices.

Non-Agency RMBS:

The Company has elected the fair value option for certain interests in Non-Agency RMBS which it refers to as the overcollateralization classes. The cash flows for these holdings are generally subordinate to all other interests of the trusts and generally only pay out funds when certain ratios are met and excess cash holdings, as determined by the trustee, are available for distribution to the overcollateralization class. Many of the investments in this group have no current cash flows and may not ever pay cash flows, depending on the loss experience of the collateral group supporting the investment. Estimating future cash flows for this group of Non-Agency RMBS investments is highly subjective and uncertain; therefore, the Company records these holdings at fair value with changes in fair value reflected in earnings.

Changes in fair value are presented in Net unrealized gains (losses) on financial instruments at fair value on the Consolidated Statements of Operations. The fair value of the Non-Agency RMBS carried at fair value with changes in fair value reflected in earnings was $15 million and $19 million as of September 30, 2017 and December 31, 2016, respectively.

The table below shows the unpaid principal, fair value and impact of change in fair value on each of the financial instruments carried with fair value option as of September 30, 2017 and 2016, respectively:

	September 30, 2017
	(dollars in thousands)
	Unpaid Principal/ Notional		Fair Value		Quarter to Date Gain/(Loss) on Change in Fair Value			Year to Date Gain/(Loss) on Change in Fair Value
Assets:
Non-agency RMBS
Subordinated	N/A		14,761		2,678			1,791
Senior, interest-only	4,948,265		212,662		1,784			(16,446		)
Subordinated, interest-only	256,286		11,588		1,048			475
Agency MBS
Residential Pass-through	$	586,030	$	614,758	$	(2,457	)	$	(2,457	)
Commercial Pass-through	407,943		410,013		(1,852		)	(1,852		)
Interest-only	3,176,110		114,810		(779		)	831
Loans held for investment, at fair value	13,327,252		13,538,052		57,114			271,824
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	9,622,994		9,683,062		(38,494		)	(95,120		)

	September 30, 2016
	(dollars in thousands)
	Unpaid Principal/ Notional		Fair Value		Quarter to Date Gain/(Loss) on Change in Fair Value			Year to Date Gain/(Loss) on Change in Fair Value
Assets:
Non-agency RMBS
Subordinated	N/A		20,671		8,257			7,551
Senior, interest-only	5,733,457		291,526		2,214			22,332
Subordinated, interest-only	269,868		13,498		1,289			3,288
Agency MBS
Residential Pass-through	$	—	$	—	$	—		$	—
Commercial Pass-through	—		—		—			—
Interest-only	3,474,731		157,088		(345		)	430
Loans held for investment, at fair value	9,030,908		8,909,037		68,508			113,646
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	7,334,475		7,191,462		(46,923		)	(67,029		)

Loans Held for Investment

Loans consisting of seasoned subprime residential mortgage loans:

The Company estimates the fair value of its Loans held for investment consisting of seasoned subprime residential mortgage loans on a loan by loan basis using an internally developed model which compares the loan held by the Company with a loan currently offered in the market. The loan price is adjusted in the model by considering the loan factors which would impact the value of a loan. These loan factors include: loan coupon as compared to coupon currently available in the market, FICO, loan-to-value ratios, delinquency history, owner occupancy, and property type, among other factors. A baseline is developed for each significant loan factor and adjusts the price up or down depending on how that factor for each specific loan compares to the baseline rate. Generally, the most significant impact on loan value is the loan interest rate as compared to interest rates currently available in the market and delinquency history. These two factors are based on relevant observable inputs.

The Company also monitors market activity to identify trades which may be used to compare internally developed prices; however, as the portfolio of loans held at fair value is a seasoned subprime pool of mortgage loans, comparable loan pools are not common or directly comparable. There are limited transactions in the market place to develop a comprehensive direct range of values. However, if market data becomes available, the Company will compare this data to the internally developed prices to ensure reasonableness of the valuation.

The Company reviews the fair values generated by the model to determine whether prices are reflective of the current market by corroborating its estimates of fair value by comparing the results to non-binding independent prices provided by two independent third party pricing services for the loan portfolio. Each quarter the Company develops thresholds which are determined utilizing a senior securitization market for a similar pool of loans.

If the internally developed fair values of the loan pools differ from the independent prices provided by greater than a predetermined threshold for the period, the Company highlights these differences for further review, both internally and with the third party pricing service. The Company obtains certain inputs used by the third party pricing services and evaluates them for reasonableness. The Company updates its own model if the Company determines the third party pricing inputs more accurately reflect the current market environment or observed information from the third party vendors. If the Company believes that its internally developed inputs more accurately reflect the current market environment, it will request that the third party pricing service review market factors that may not have been considered by the third party pricing service. The Company reconciles and resolves all pricing differences in excess of the predetermined thresholds before a final price is established.

At September 30, 2017, the internally developed fair values of loan pools of $380 million had a difference between the model generated prices and third party prices provided in excess of the derived predetermined threshold for the period. The internally developed prices were $6 million lower than the third party prices provided of $386 million. After review and discussion, the Company affirmed and valued the investments at the lower internally developed prices. At December 31, 2016, the internally developed fair values of loan pools of $1.60 billion had a difference between the model generated prices and third party prices provided in excess of the derived predetermined threshold for the period. The internally developed prices were $50 million higher than the third party prices provided of $1.55 billion. After review and discussion, the Company affirmed and valued the investments at the higher internally developed prices. No other differences were noted at September 30, 2017 and December 31, 2016 in excess of the derived predetermined threshold for the period.

The Company’s estimates of fair value of Loans held for investment involve management judgment and assumptions that are deemed to be significant to the fair value measurement process, which renders the resulting fair value estimates level 3 inputs in the fair value hierarchy.

Loans collateralized by jumbo, prime residential mortgages:

The loans collateralized by jumbo, prime residential mortgages are carried at fair value. The loans are held as part of a consolidated Collateralized Financing Entity (“CFE”). A CFE is a variable interest entity that holds financial assets, issues beneficial interests in those assets and has no more than nominal equity and the beneficial interests have contractual recourse only to the related assets of the CFE. Accounting guidance for CFEs allow the Company to elect to measure the CFE’s financial assets using the fair value of the CFE’s financial liabilities as the fair values of the financial liabilities of the CFE are more observable. Therefore, the fair value of the loans collateralized by jumbo, prime residential mortgages is based on the fair value of the financial liabilities. See discussion of the fair value of Securitized Debt, collateralized by Loans Held for Investment at fair value below.

As the more observable financial liabilities are considered level 3 in the fair value hierarchy, the Loans collateralized by jumbo, prime residential mortgages are also level 3 in the fair value hierarchy.

Securitized Debt, collateralized by Non-Agency RMBS

The Company carries securitized debt, collateralized by Non-Agency RMBS at the principal balance outstanding plus unamortized premiums, less unaccreted discounts recorded in connection with the financing of the loans or RMBS with third parties. The Company estimates the fair value of securitized debt, collateralized by Non-Agency RMBS by estimating the future cash flows associated with the underlying assets collateralizing the secured debt outstanding. The Company models the fair value of each underlying asset by considering, among other items, the structure of the underlying security, coupon, servicer, delinquency, actual and expected defaults, actual and expected default severities, reset indices, and prepayment speeds in conjunction with market research for similar collateral performance and management’s expectations of general economic conditions in the sector and other economic factors. This process, including the review process, is consistent with the process used for Agency MBS and Non-Agency RMBS using internal models. For further discussion of the valuation process and benchmarking process, see Agency MBS and Non-Agency RMBS discussion herein.

The Company’s estimates of fair value of securitized debt, collateralized by Non-Agency RMBS involve management’s judgment and assumptions that are deemed to be significant to the fair value measurement process, which renders the resulting fair value estimates level 3 inputs in the fair value hierarchy.

Securitized Debt, collateralized by Loans Held for Investment

The Company determines the fair value of securitized debt, collateralized by loans held for investment based on discounted cash flows utilizing an internal pricing model that incorporates factors such as coupon, prepayment speeds, loan size, collateral composition, borrower characteristics, expected interest rates, life caps, periodic caps, reset dates, collateral seasoning, expected losses, expected default severity, credit enhancement, and other pertinent factors. This process, including the review process, is consistent with the process used for Agency MBS and Non-Agency RMBS using internal models. For further discussion of the valuation process and benchmarking process, see Agency MBS and Non-Agency RMBS discussion herein.

The Company’s estimates of fair value of securitized debt, collateralized by loans held for investment involve management’s judgment and assumptions that are deemed to be significant to the fair value measurement process, which renders the resulting fair value estimates level 3 inputs in the fair value hierarchy.

Derivatives

Interest Rate Swaps and Swaptions

The Company uses clearing exchange market prices to determine the fair value of its exchange cleared interest rate swaps. For bi-lateral swaps, the Company determines the fair value based on the net present value of expected future cash flows on the swap. The Company uses option pricing model to determine the fair value of its swaptions. For bi-lateral swaps and swaptions, the Company compares its own estimate of fair value with counterparty prices to evaluate for reasonableness. Both the clearing exchange and counter-party pricing quotes, incorporate common market pricing methods, including a spread measurement to the Treasury yield curve or interest rate swap curve as well as underlying characteristics of the particular contract. Interest rate swaps and swaptions are modeled by the Company by incorporating such factors as the term to maturity, swap curve, overnight index swap rates, and the payment rates on the fixed portion of the interest rate swaps. The Company has classified the characteristics used to determine the fair value of interest rate swaps as Level 2 inputs in the fair value hierarchy.

Treasury Futures

The fair value of Treasury futures is determined by quoted market prices in an active market. The Company has classified the characteristics used to determine the fair value of Treasury futures as Level 1 inputs in the fair value hierarchy.

Repurchase Agreements

Repurchase agreements are collateralized financing transactions utilized by the Company to acquire investment securities. Due to the short term nature of these financial instruments, the Company estimates the fair value of these repurchase agreements using the contractual obligation plus accrued interest payable.

Short-term Financial Instruments

The carrying value of cash and cash equivalents, accrued interest receivable, receivable for securities sold, dividends payable, payable for investments purchased and accrued interest payable are considered to be a reasonable estimate of fair value due to the short term nature and low credit risk of these short-term financial instruments.

The Company’s financial assets and liabilities carried at fair value on a recurring basis, including the level in the fair value hierarchy, at September 30, 2017 and December 31, 2016 are presented below.

	September 30, 2017
	(dollars in thousands)
	Level 1		Level 2			Level 3			Counterparty and Cash Collateral, netting			Total
Assets:
Non-Agency RMBS, at fair value	$	—	$	—		$	2,950,348		$	—		$	2,950,348
Agency MBS, at fair value	—		4,354,872			—			—			4,354,872
Loans held for investment, at fair value	—		—			13,538,052			—			13,538,052
Derivatives	4,864		22,771			—			(5,110		)	22,525
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	—		—			(9,683,062		)	—			(9,683,062		)
Derivatives	—		(6,314		)	—			5,110			(1,204		)
Total	$	4,864	$	4,371,329		$	6,805,338		$	—		$	11,181,531

	December 31, 2016
	(dollars in thousands)
	Level 1		Level 2			Level 3			Counterparty and Cash Collateral, netting			Total
Assets:
Non-Agency RMBS, at fair value	$	—	$	—		3,330,063			$	—		$	3,330,063
Agency MBS, at fair value	—		4,167,754			—			—			4,167,754
Loans held for investment, at fair value	—		—			8,753,653			—			8,753,653
Derivatives	1,785		22,327			—			(14,435		)	9,677
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	—		—			(6,941,097		)	—			(6,941,097		)
Derivatives	—		(17,225		)	—			14,875			(2,350		)
Total	$	1,785	$	4,172,856		$	5,142,619		$	440		$	9,317,700

The table below provides a summary of the changes in the fair value of securities classified as Level 3 at September 30, 2017 and December 31, 2016.

Fair Value Reconciliation, Level 3
	For the Nine Months Ended, September 30, 2017
	(dollars in thousands)
	Non-Agency RMBS			Loans held for investment			Securitized Debt
Beginning balance Level 3 assets	$	3,330,063		$	8,753,653		$	(6,941,097	)
Transfers in to Level 3 assets	6,112			—			—
Transfers out of Level 3 assets	—			—			—
Purchases	71,116			5,835,799			(4,159,073		)
Principal payments	(459,854		)	(1,298,856		)	1,319,120
Sales and Settlements	(68,164		)	2,942			245,369
Accretion (amortization) of purchase discounts	92,201			(27,310		)	(4,247		)
Gains (losses) included in net income
Other than temporary credit impairment losses	(41,702		)	—			—
Realized gains (losses) on sales and settlements	12,031			—			(48,014		)
Net unrealized gains (losses) included in income	(14,179		)	271,824			(95,120		)
Gains (losses) included in other comprehensive income
Total unrealized gains (losses) for the period	22,724			—			—
Ending balance Level 3 assets	$	2,950,348		$	13,538,052		$	(9,683,062	)

Fair Value Reconciliation, Level 3
	For the Year Ended, December 31, 2016
	(dollars in thousands)
	Non-Agency RMBS			Loans held for investment			Securitized Debt
Beginning balance Level 3 assets	$	3,675,841		$	4,768,416		$	(3,720,496	)
Transfers in to Level 3 assets	—			—			—
Transfers out of Level 3 assets	—			—			—
Purchases	257,914			4,897,370			(4,797,255		)
Principal payments	(532,696		)	(1,022,414		)	1,059,854
Sales and Settlements	(149,938		)	5,007			608,816
Accretion (amortization) of purchase discounts	120,638			(41,363		)	(2,128		)
Gains (losses) included in net income
Other than temporary credit impairment losses	(57,986		)	—			—
Realized gains (losses) on sales and settlements	13,761			—			(122		)
Net unrealized gains (losses) included in income	3,173			146,637			(89,766		)
Gains (losses) included in other comprehensive income
Total unrealized gains (losses) for the period	(644		)	—			—
Ending balance Level 3 assets	$	3,330,063		$	8,753,653		$	(6,941,097	)

There were no transfers to or from Level 3 for the quarter ended September 30, 2017. There were $6 million of IOs transferred to Level 3 and no transfers out from Level 3, during the nine months ended September 30, 2017. There were no transfers to or from Level 3 for the year ended December 31, 2016. The primary cause of the changes in fair value of the loans and the securitized debt are due to changes in credit risk of the portfolio.

The significant unobservable inputs used in the fair value measurement of the Company’s Non-Agency RMBS and securitized debt are the weighted average discount rates, constant prepayment speed (“CPR”), cumulative default rate, and the loss severity.

Constant Prepayment Rates

For securitized debt carried at fair value issued at a premium, as prepayment speeds increase, the amount of interest expense the Company recognizes decreases as the issued premium on the debt amortizes faster than expected. Conversely, decreases in prepayment speeds result in increased expense and can extend the period over which the Company amortizes the premium.

For debt issued at a discount, as prepayment speeds increase, the amount of interest the Company expenses increases from the acceleration of the accretion of the discount into interest expense. Conversely, decreases in prepayment speeds result in decreased expense as the accretion of the discount into interest expense occurs over a longer period.

Constant Default Rates

Cumulative default rates represent an annualized rate of default on a group of mortgages. The constant default rate (“CDR”) represents the percentage of outstanding principal balances in the pool that are in default, which typically equates to the home being past 60-day and 90-day notices and in the foreclosure process. When default rates increase, expected cash flows on the underlying collateral decreases. When default rates decrease, expected cash flows on the underlying collateral increases.

Loss Severity

Loss severity rates reflect the amount of loss expected from a foreclosure and liquidation of the underlying collateral in the mortgage loan pool. When a mortgage loan is foreclosed the collateral is sold and the resulting proceeds are used to settle the outstanding obligation. In many circumstances, the proceeds from the sale do not fully repay the outstanding obligation. In these cases, a loss is incurred by the lender. Loss severity is used to predict how costly future losses are likely to be. An increase in loss severity results in a decrease in expected future cash flows. A decrease in loss severity results in an increase in expected future cash flows.

Discount Rate

The discount rate refers to the interest rate used in the discounted cash flow analysis to determine the present value of future cash flows. The discount rate takes into account not just the time value of money, but also the risk or uncertainty of future cash flows. An increased uncertainty of future cash flows results in a higher discount rate. The discount rate used to calculate the present value of the expected future cash flows is based on the discount rate implicit in the security as of the last measurement date. As discount rates move up, the discounted cash flows are reduced.

Sensitivity of Significant Inputs – Non-Agency RMBS and securitized debt, collateralized by loans held for investment

Prepayment speeds, as reflected by the CPR, vary according to interest rates, the type of financial instrument, conditions in financial markets, and other factors, none of which can be predicted with any certainty. In general, when interest rates rise, it is relatively less attractive for borrowers to refinance their mortgage loans, and as a result, prepayment speeds tend to decrease. When interest rates fall, prepayment speeds tend to increase. For RMBS investments purchased at a premium, as prepayment speeds increase, the amount of income the Company earns decreases as the purchase premium on the bonds amortizes faster than expected. Conversely, decreases in prepayment speeds result in increased income and can extend the period over which the Company amortizes the purchase premium. For RMBS investments purchased at a discount, as prepayment speeds increase, the amount of income the Company earns increases from the acceleration of the accretion of the discount into interest income. Conversely, decreases in prepayment speeds result in decreased income as the accretion of the purchase discount into interest income occurs over a longer period.

A summary of the significant inputs used to estimate the fair value of Non-Agency RMBS held for investment at fair value as of September 30, 2017 and December 31, 2016 follows:

	September 30, 2017				December 31, 2016
	Significant Inputs				Significant Inputs
	Weighted Average Discount Rate	CPR	CDR	Loss Severity	Weighted Average Discount Rate	CPR	CDR	Loss Severity
		Range				Range
Non-Agency RMBS
Senior	4.6%	1% -45%	0% -60%	35% -95%	5.4%	1% -35%	0% -22%	35% -95%
Senior interest-only	11.8%	4% -28%	0% -64%	35% -95%	12.5%	3% -30%	0% -22%	35% -95%
Subordinated	5.9%	1% -20%	0% -21%	35% -77%	6.2%	1% -25%	0% -18%	0% -79%
Subordinated interest-only	10.9%	10% -18%	0% -11%	35% -59%	13.2%	6% -15%	0% -11%	35% -76%

A summary of the significant inputs used to estimate the fair value of securitized debt at fair value, collateralized by loans held for investment, as of September 30, 2017 and December 31, 2016 follows:

		September 30, 2017				December 31, 2016
		Significant Inputs				Significant Inputs
	Weighted Average Discount Rate	CPR Range	CDR Range	Loss Severity Range	Weighted Average Discount Rate	CPR Range	CDR Range	Loss Severity Range
Securitized debt at fair value, collateralized by loans held for investment	4.1%	1% - 22%	0% - 30%	35% - 70%	4.0%	1% - 35%	0% - 30%	35% - 65%

All of the significant inputs listed have some degree of market observability, based on the Company’s knowledge of the market, information available to market participants, and use of common market data sources. Collateral default and loss severity projections are in the form of “curves” that are updated quarterly to reflect the Company’s collateral cash flow projections. Methods used to develop these projections conform to industry conventions. The Company uses assumptions it considers its best estimate of future cash flows for each security.

Constant Prepayment Rates

The prepayment speed specifies the percentage of the collateral balance that is expected to prepay at each point in the future. The prepayment speed is based on factors such as collateral FICO score, loan-to-value ratio, debt-to-income ratio, and vintage on a loan level basis and is scaled up or down to reflect recent collateral-specific prepayment experience as obtained from remittance reports and market data services.

Constant Default Rates

Default vectors are determined from the current “pipeline” of loans that are more than 30 days delinquent, in foreclosure, bankruptcy, or are REO. These delinquent loans determine the first 30 months of the default curve. Beyond month 30, the default curve transitions to a value that is reflective of a portion of the current delinquency pipeline.

Loss Severity

The curve generated to reflect the Company’s expected loss severity is based on collateral-specific experience with consideration given to other mitigating collateral characteristics. Characteristics such as seasoning are taken into consideration because severities tend to initially increase on newly originated securities, before beginning to decline as the collateral ages and eventually stabilize. Collateral characteristics such as loan size, loan-to-value, and geographic location of collateral also effect loss severity.

Discount Rate

The discount rates applied to the expected cash flows to determine fair value are derived from a range of observable prices on securities backed by similar collateral. As the market becomes more or less liquid, the availability of these observable inputs will change.

Sensitivity of Significant Inputs – Loans held for investment

The Loans held for investment are comprised primarily of loans collateralized by seasoned subprime residential mortgages. Additionally, it includes non-conforming, single family, owner occupied, jumbo, prime residential mortgages. The significant unobservable inputs used to estimate the fair value of the Loans held for investment collateralized by seasoned subprime residential mortgage loans, as of September 30, 2017 and December 31, 2016 include coupon, FICO score at origination, loan-to-value ratios (LTV), owner occupancy status, and property type. A summary of the significant inputs used to estimate the fair value of Loans held for investment collateralized by seasoned subprime mortgages at fair value as of September 30, 2017 and December 31, 2016 follows:

	September 30, 2017	December 31, 2016
Factor:
Coupon
Base Rate	4.7%	5.2%
Actual	7.0%	7.1%
FICO
Base Rate	634	632
Actual	626	621
Loan-to-value (LTV)
Base Rate	89%	87%
Actual	88%	88%
Loan Characteristics:
Occupancy
Owner Occupied	94%	97%
Investor	2%	2%
Secondary	4%	1%
Property Type
Single family	86%	86%
Manufactured housing	5%	6%
Multi-family/mixed use/other	9%	8%

The loan factors are generally not observable for the individual loans and the base rates developed by the Company’s internal model are subjective and change as market conditions change. The impact of the loan coupon on the value of the loan is dependent on whether the loan is clean or reperforming. A clean loan, with no history of delinquent payments and a relatively high loan interest rate would result in a higher overall value than a reperforming loan which has a history of delinquency. Similarly, a higher FICO score and a lower LTV ratio results in increases in the fair market value of the loan and a lower FICO score and a higher LTV ratio results in a lower value.

Property types also affect the overall loan values. Property types include single family, manufactured housing and multi-family/mixed use and other types of properties. Single family homes represent properties which house only one family unit. Manufactured homes include mobile homes and modular homes. Loan value for properties that are investor or secondary homes have a reduced value as compared to the baseline loan value. Additionally, single family homes will result in an increase to the loan value where manufactured and multi-family/mixed use and other properties will result in a decrease to the loan value, as compared to the baseline.

Financial instruments not carried at fair value

The following table presents the carrying value and fair value, as described above, of the Company’s financial instruments not carried at fair value on a recurring basis at September 30, 2017 and December 31, 2016.

	September 30, 2017
	(dollars in thousands)
	Level in Fair Value Hierarchy	Carrying Amount	Fair Value
Repurchase agreements	2	6,709,821	6,727,850
Securitized debt, collateralized by Non-Agency RMBS	3	233,113	221,567

	December 31, 2016
	(dollars in thousands)
	Level in Fair Value Hierarchy	Carrying Amount	Fair Value
Repurchase agreements	2	5,600,903	5,619,385
Securitized debt, collateralized by Non-Agency RMBS	3	334,124	324,261

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Repurchase Agreements

9 Months Ended

Sep. 30, 2017

Banking and Thrift [Abstract]

Repurchase Agreements

Repurchase Agreements

The interest rates of the Company’s repurchase agreements are generally indexed to the one-month, three-month and twelve-month LIBOR rates and re-price accordingly. The repurchase agreements outstanding, weighted average borrowing rates, weighted average remaining maturities, average daily balances and the fair value of collateral pledged as of September 30, 2017 and December 31, 2016 were:

	September 30, 2017			December 31, 2016
Repurchase agreements outstanding secured by:
Agency MBS (in thousands)	$	3,096,233		$	3,087,734
Non-agency MBS and Loans held for investment (in thousands)	3,613,588			2,513,169
Total:	$	6,709,821		$	5,600,903
Average balance of Repurchase agreements secured by:
Agency MBS (in thousands)	$	3,129,569		$	4,159,651
Non-agency MBS and Loans held for investment (in thousands)	2,983,319			2,322,683
Total:	$	6,112,888		$	6,482,334
Average borrowing rate of Repurchase agreements secured by:
Agency MBS	1.39		%	0.90		%
Non-agency MBS and Loans held for investment	3.25		%	3.05		%
Average remaining maturity of Repurchase agreements secured by:
Agency MBS	21 Days			32 Days
Non-agency MBS and Loans held for investment	73 Days			98 Days
Average original maturity of Repurchase agreements secured by:
Agency MBS	76 Days			112 Days
Non-agency MBS and Loans held for investment	109 Days			155 Days
MBS pledged as collateral at fair value on Repurchase agreements:
Agency MBS (in thousands)	$	3,332,640		$	3,334,245
Non-agency MBS and Loans held for investment (in thousands)	4,817,669			3,699,621
Total:	$	8,150,309		$	7,033,866

At September 30, 2017 and December 31, 2016, the repurchase agreements collateralized by MBS and Loans held for investment had the following remaining maturities.

	September 30, 2017		December 31, 2016
	(dollars in thousands)
Overnight	$	—	$	—
1 to 29 days	3,777,160		2,947,604
30 to 59 days	1,591,370		958,956
60 to 89 days	330,186		407,625
90 to 119 days	28,798		559,533
Greater than or equal to 120 days	982,307		727,185
Total	$	6,709,821	$	5,600,903

At September 30, 2017, the Company had an amount at risk with Credit Suisse of 11% of its equity related to the collateral posted on repurchase agreements. As of September 30, 2017 the weighted average maturity of the repurchase agreements with Credit Suisse was 77 days and the amount at risk was $404 million. At December 31, 2016, the Company had an amount at risk with Nomura Securities Company Limited of 10% of its equity related to the collateral posted on repurchase agreements. As of December 31, 2016, the weighted average maturity of the repurchase agreements with Nomura Securities Company Limited was 104 days and the amount at risk was $320 million. There were no other amounts at risk with any other counterparties greater than 10% of the Company’s equity as of September 30, 2017 and December 31, 2016.

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Securitized Debt

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Securitized Debt

Securitized Debt

All of the Company’s securitized debt is collateralized by residential mortgage loans or Non-Agency RMBS. For financial reporting purposes, the Company’s securitized debt is accounted for as secured borrowings. Thus, the residential mortgage loans or RMBS held as collateral are recorded in the assets of the Company as Loans held for investment or Non-Agency RMBS and the securitized debt is recorded as a non-recourse liability in the accompanying Consolidated Statements of Financial Condition.

Securitized Debt Collateralized by Non-Agency RMBS

At September 30, 2017 and December 31, 2016 the Company’s securitized debt collateralized by Non-Agency RMBS is carried at amortized cost and had a principal balance of $247 million and $350 million, respectively. At September 30, 2017 and December 31, 2016, the debt carried a weighted average cost of financing equal to 5.88% and 5.21%, respectively. The debt matures between the years 2035 and 2047. None of the Company’s securitized debt collateralized by Non-Agency RMBS is callable.

During the quarter ended September 30, 2017, the Company acquired securitized debt collateralized by Non-Agency RMBS with an amortized cost balance of $166 thousand for $167 thousand. This transaction resulted in a net loss on the extinguishment of debt of $1 thousand, which is reflected in earnings for the quarter and nine months ended September 30, 2017.

During the quarter ended September 30, 2016, the Company acquired securitized debt collateralized by Non-Agency RMBS with an amortized cost balance of $4 million for $4 million. This transaction resulted in a net loss on the extinguishment of debt of $45 thousand. This loss is reflected in earnings for the quarter and nine months ended September 30, 2016.

The following table presents the estimated principal repayment schedule of the securitized debt collateralized by Non-Agency RMBS at September 30, 2017 and December 31, 2016, based on expected cash flows of the residential mortgage loans or RMBS, as adjusted for projected losses on the underlying collateral of the debt. All of the securitized debt recorded in the Company’s Consolidated Statements of Financial Condition is non-recourse to the Company.

	September 30, 2017		December 31, 2016
	(dollars in thousands)
Within One Year	$	62,165	$	98,565
One to Three Years	50,055		82,563
Three to Five Years	21,013		23,854
Greater Than Five Years	5,913		31,973
Total	$	139,146	$	236,955

Maturities of the Company’s securitized debt collateralized by Non-Agency RMBS are dependent upon cash flows received from the underlying loans. The estimate of their repayment is based on scheduled principal payments on the underlying loans. This estimate will differ from actual amounts to the extent prepayments or loan losses are experienced. See Note 3 for a more detailed discussion of the securities collateralizing the securitized debt.

Securitized Debt Collateralized by Loans Held for Investment

At September 30, 2017 and December 31, 2016 the Company’s securitized debt collateralized by loans held for investment had a principal balance of $9.6 billion and $7.1 billion, respectively. At September 30, 2017 and December 31, 2016 the total securitized debt collateralized by loans held for investment carried a weighted average cost of financing equal to 4.14% and 3.99% respectively. The debt matures between the years 2021 and 2065.

The Company did not acquire any securitized debt collateralized by loans during the quarters ended September 30, 2017 and 2016. During the second quarter of 2017, the Company acquired securitized debt collateralized by loans with an amortized cost balance of $197 million for $245 million. This transaction resulted in a net loss on the extinguishment of debt of $48 million, which is reflected in earnings for the nine months ended September 30, 2017. As the Company's securitized debt is carried at fair value with changes in fair value reflected in earnings some of this loss was recognized during prior periods. During the first quarter of 2016, the Company acquired securitized debt collateralized by loans with an amortized cost balance of $44 million for $46 million. This transaction resulted in a net loss on the extinguishment of debt of $2 million. This loss is reflected in earnings for the nine months ended September 30, 2016.

The following table presents the estimated principal repayment schedule of the securitized debt collateralized by loans held for investment at September 30, 2017 and December 31, 2016, based on expected cash flows of the residential mortgage loans or RMBS, as adjusted for projected losses on the underlying collateral of the debt. All of the securitized debt recorded in the Company’s Consolidated Statements of Financial Condition is non-recourse to the Company.

	September 30, 2017		December 31, 2016
	(dollars in thousands)
Within One Year	$	1,856,397	$	1,151,519
One to Three Years	2,907,977		1,841,808
Three to Five Years	2,163,866		1,423,706
Greater Than Five Years	2,630,039		2,477,123
Total	$	9,558,279	$	6,894,156

Maturities of the Company’s securitized debt collateralized by loans held for investment are dependent upon cash flows received from the underlying loans. The estimate of their repayment is based on scheduled principal payments on the underlying loans. This estimate will differ from actual amounts to the extent prepayments or loan losses are experienced. See Note 4 for a more detailed discussion of the loans collateralizing the securitized debt.

Certain of the securitized debt collateralized by loans held for investment contain call provisions and are callable at par, at the option of the Company. The following table presents the par value of the callable debt by year at September 30, 2017. 

September 30, 2017
(dollars in thousands)
Year	Principal
2017	$	811,395
2018	1,002,614
2019	416,722
2020	4,232,520
2021	2,961,293
Total	$	9,424,544

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Consolidated Securitization Vehicles and Other Variable Interest Entities

9 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Consolidated Securitization Vehicles and Other Variable Interest Entities

Consolidated Securitization Vehicles and Other Variable Interest Entities

Since its inception, the Company has utilized VIEs for the purpose of securitizing whole mortgage loans or re-securitizing RMBS and obtaining long-term, non-recourse financing. The Company evaluated its interest in each VIE to determine if it is the primary beneficiary.

As of September 30, 2017, the Company’s Consolidated Statement of Financial Condition includes assets of consolidated VIEs with a carrying value of $14.8 billion and liabilities with a carrying value of $10.0 billion. As of December 31, 2016, the Company’s Consolidated Statement of Financial Condition includes assets of consolidated VIEs with a carrying value of $10.8 billion of and liabilities with a carrying value of $7.3 billion.

During the nine months ended September 30, 2017, the Company acquired approximately $5.3 billion unpaid principal balance (excluding $550 million of loans held by a subsidiary of the Company) of seasoned residential subprime mortgage loans. The Company sold these loans to multiple real estate mortgage investment conduit trusts (the “Trusts”). The Company purchased certain subordinate notes and trust certificates of the Trusts. The Company evaluated the Trusts and determined that the total equity investment at risk is not sufficient to permit these trusts to finance its activities without additional subordinated financial support provided by another party. Therefore, the Company concluded that the Trusts were VIEs. The Company further determined that their interests in the Trusts gave the Company the power to direct the activity of these VIEs that most significantly impacted the Company's economic performance of the VIEs. As the Company concluded that it was the primary beneficiary of the Trusts, the Company consolidated the assets and liabilities of the Trusts. All intercompany balances and transactions are eliminated in consolidation.

The consolidation of these Trusts resulted in the addition of the following amounts, net of eliminations, at the time of acquisition.

	Consolidated Trusts
	(dollars in thousands)
Assets:
Loans held for investment, at fair value	$	5,353,955
Other Assets	36,795
Liabilities:
Securitized debt at fair value (1)	$	4,171,458

(1) After the elimination of intercompany balances.

As sponsor of the Trusts, the Company has retained an eligible horizontal retained interest consisting of the Class B and Class C

notes in the Trusts in order to satisfy the U.S. risk retention rules (the “Required Credit Risk”). The U.S. risk retention rules impose limitations on the ability of the Company to dispose of or hedge the Required Credit Risk until the later of (i) the fifth

anniversary of the closing date of the securitization transactions (the “Closing Date”) and (ii) the date on which the aggregate unpaid principal balance of the mortgage loans has been reduced to 25% of the aggregate unpaid principal balance of the mortgage loans as of the Closing Date, but in any event no longer than the seventh anniversary of the Closing Date. These investments have been eliminated in consolidation of the Trusts as of September 30, 2017.

VIEs for Which the Company is the Primary Beneficiary

The retained beneficial interests in VIEs for which the Company is the primary beneficiary are typically the subordinated tranches of these re-securitizations and in some cases the Company may hold interests in additional tranches. The table below reflects the assets and liabilities recorded in the Consolidated Statements of Financial Condition related to the consolidated VIEs as of September 30, 2017 and December 31, 2016.

	September 30, 2017		December 31, 2016
	(dollars in thousands)
Assets:
Non-Agency RMBS, at fair value	$	1,646,762	$	1,842,080
Loans held for investment, at fair value	13,011,319		8,753,653
Accrued interest receivable	76,327		57,153
Other assets	112,572		109,068
Liabilities:
Securitized debt, collateralized by Non-Agency RMBS	$	233,113	$	334,124
Securitized debt at fair value, collateralized by loans held for investment	9,683,062		6,941,097
Accrued interest payable	34,650		24,942
Other liabilities	3,612		2,742

Income, OTTI and expense amounts related to consolidated VIEs recorded in the Consolidated Statements of Operations is presented in the tables below.

	For the Quarters Ended
	September 30, 2017			September 30, 2016
	(dollars in thousands)
Interest income, Assets of consolidated VIEs	$	241,195		$	195,488
Interest expense, Non-recourse liabilities of VIEs	101,856			70,715
Net interest income	$	139,339		$	124,773
Total other-than-temporary impairment losses	$	(668	)	$	(21	)
Portion of loss recognized in other comprehensive income (loss)	(10,108		)	(4,599		)
Net other-than-temporary credit impairment losses	$	(10,776	)	$	(4,620	)
Servicing fees	$	10,492		$	9,788

	For the Nine Months Ended
	September 30, 2017			September 30, 2016
	(dollars in thousands)
Interest income, Assets of consolidated VIEs	$	668,621		$	488,353
Interest expense, Non-recourse liabilities of VIEs	290,264			168,738
Net interest income	$	378,357		$	319,615
Total other-than-temporary impairment losses	$	(1,777	)	$	(866	)
Portion of loss recognized in other comprehensive income (loss)	(35,720		)	(31,925		)
Net other-than-temporary credit impairment losses	$	(37,497	)	$	(32,791	)
Servicing fees	$	30,970		$	23,139

VIEs for Which the Company is Not the Primary Beneficiary

The Company is not required to consolidate VIEs in which it has concluded it does not have a controlling financial interest, and thus is not the primary beneficiary. In such cases, the Company does not have both the power to direct the entities’ most significant activities and the obligation to absorb losses or right to receive benefits that could potentially be significant to the VIEs. The Company’s investments in these unconsolidated VIEs are carried in Non-Agency RMBS on the Consolidated Statements of Financial Condition and include senior and subordinated bonds issued by the VIEs. The fair value of the Company’s investments in each unconsolidated VIEs at September 30, 2017, ranged from less than $1 million to $51 million, with an aggregate amount of $1.3 billion. The fair value of the Company’s investments in each unconsolidated VIEs at December 31, 2016, ranged from less than $1 million to $51 million, with an aggregate amount of $1.5 billion. The Company’s maximum exposure to loss from these unconsolidated VIEs was $1.2 billion and $1.4 billion at September 30, 2017 and December 31, 2016, respectively. The maximum exposure to loss was determined as the amortized cost of the unconsolidated VIE, which represents the purchase price of the investment adjusted by any unamortized premiums or discounts as of the reporting date.

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Derivative Instruments

9 Months Ended

Sep. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments

Derivative Instruments

In connection with the Company’s interest rate risk management strategy, the Company economically hedges a portion of its interest rate risk by entering into derivative financial instrument contracts in the form of interest rate swaps, swaptions, and Treasury futures. The Company’s swaps are used to lock in a fixed rate related to a portion of its current and anticipated payments on its repurchase agreements. The Company typically agrees to pay a fixed rate of interest (“pay rate”) in exchange for the right to receive a floating rate of interest (“receive rate”) over a specified period of time. Treasury futures are derivatives which track the prices of specific Treasury securities and are traded on an active exchange. It is generally the Company’s policy to close out any Treasury futures positions prior to taking delivery of the underlying security. The Company uses Treasury futures to lock in a fixed rate related to a portion of its current and anticipated payments on its repurchase agreements.

The use of derivatives creates exposure to credit risk relating to potential losses that could be recognized if the counterparties to these instruments fail to perform their obligations under the contracts. In the event of a default by the counterparty, the Company could have difficulty obtaining its RMBS or cash pledged as collateral for these derivative instruments. The Company periodically monitors the credit profiles of its counterparties to determine if it is exposed to counterparty credit risk. See Note 14 for further discussion of counterparty credit risk.

The table below summarizes the location and fair value of the derivatives reported in the Consolidated Statements of Financial Condition after counterparty netting and posting of cash collateral as of September 30, 2017 and December 31, 2016.

			September 30, 2017
			Derivative Assets			Derivative Liabilities
Derivative Instruments	Notional Amount Outstanding		Location on Consolidated Statements of Financial Condition	Net Estimated Fair Value/Carrying Value		Location on Consolidated Statements of Financial Condition	Net Estimated Fair Value/Carrying Value
			(dollars in thousands)
Interest Rate Swaps	$	3,373,400	Derivatives, at fair value, net	$	15,254	Derivatives, at fair value, net	$	—
Swaptions	482,000		Derivatives, at fair value, net	2,407		Derivatives, at fair value, net	(1,204		)
Treasury Futures	619,700		Derivatives, at fair value, net	4,864		Derivatives, at fair value, net	—
Total	$	4,475,100		$	22,525		$	(1,204	)

			December 31, 2016
			Derivative Assets			Derivative Liabilities
Derivative Instruments	Notional Amount Outstanding		Location on Consolidated Statements of Financial Condition	Net Estimated Fair Value/Carrying Value		Location on Consolidated Statements of Financial Condition	Net Estimated Fair Value/Carrying Value
			(dollars in thousands)
Interest Rate Swaps	$	1,396,900	Derivatives, at fair value, net	$	—	Derivatives, at fair value, net	$	—
Swaptions	624,000		Derivatives, at fair value, net	7,892		Derivatives, at fair value, net	(2,350		)
Treasury Futures	619,700		Derivatives, at fair value, net	1,785		Derivatives, at fair value, net	—
Total	$	2,640,600		$	9,677		$	(2,350	)

The effect of the Company’s derivatives on the Consolidated Statements of Operations is presented below.

		Net gains (losses) on derivatives For the Quarters Ended
Derivative Instruments	Location on Consolidated Statements of Operations and Comprehensive Income	September 30, 2017			September 30, 2016
		(dollars in thousands)
Interest Rate Swaps	Net unrealized gains (losses) on derivatives	$	5,001		$	13,395
Interest Rate Swaps	Net realized gains (losses) on derivatives	(3,491		)	(4,595		)
Treasury Futures	Net unrealized gains (losses) on derivatives	3,467			12,149
Treasury Futures	Net realized gains (losses) on derivatives	(3,267		)	(7,823		)
Swaptions	Net unrealized gains (losses) on derivatives	736			2,084
Swaptions	Net realized gains (losses) on derivatives	(1,083		)	(1,850		)
Other Derivative Assets	Net unrealized gains (losses) on derivatives	—			—
Other Derivative Assets	Net realized gains (losses) on derivatives	—			—
Total		$	1,363		$	13,360

		Net gains (losses) on derivatives For the Nine Months Ended
Derivative Instruments	Location on Consolidated Statements of Operations and Comprehensive Income	September 30, 2017			September 30, 2016
		(dollars in thousands)
Interest Rate Swaps	Net unrealized gains (losses) on derivatives	$	15,694		$	(36,840	)
Interest Rate Swaps	Net realized gains (losses) on derivatives (1)	(27,222		)	(84,571		)
Treasury Futures	Net unrealized gains (losses) on derivatives	3,079			(4,259		)
Treasury Futures	Net realized gains (losses) on derivatives	(12,268		)	(28,797		)
Swaptions	Net unrealized gains (losses) on derivatives	1,129			(10,283		)
Swaptions	Net realized gains (losses) on derivatives	(5,333		)	(5,615		)
Other Derivative Assets	Net unrealized gains (losses) on derivatives	—			—
Other Derivative Assets	Net realized gains (losses) on derivatives	—			(567		)
Total		$	(24,921	)	$	(170,932	)

(1) Includes loss on termination of interest rate swap of $16 million and $61 million for the nine months ended September 30, 2017and 2016, respectively.

There were no swap terminations for the quarters ended September 30, 2017 and 2016. The Company paid $16 million to terminate interest rate swaps with a notional value of $250 million during the nine months ended September 30, 2017. The terminated swaps had original maturities ranging from 2024 to 2034. The Company paid $61 million to terminate interest rate swaps with a notional value of $3.3 billion during the nine months ended September 30, 2016. The terminated swaps had original maturities ranging from 2017 to 2034. These amounts represented the fair value of the terminated interest rate swaps, not counting any accrued interest at the time of settlement.

The weighted average pay rate on the Company’s interest rate swaps at September 30, 2017 was 1.71% and the weighted average receive rate was 1.39%. The weighted average pay rate on the Company’s interest rate swaps at December 31, 2016 was 2.13% and the weighted average receive rate was 0.90%. The weighted average maturity on the Company’s interest rate swaps at September 30, 2017 and December 31, 2016 was 5 years and 8 years, respectively.

Certain of the Company’s derivative contracts are subject to International Swaps and Derivatives Association Master Agreements or other similar agreements which may contain provisions that grant counterparties certain rights with respect to the applicable agreement upon the occurrence of certain events such as (i) a decline in stockholders’ equity in excess of specified thresholds or dollar amounts over set periods of time, (ii) the Company’s failure to maintain its REIT status, (iii) the Company’s failure to comply with limits on the amount of leverage, and (iv) the Company’s stock being delisted from the New York Stock Exchange (NYSE). Upon the occurrence of any one of items (i) through (iv), or another default under the agreement, the counterparty to the applicable agreement has a right to terminate the agreement in accordance with its provisions. Certain of the Company’s interest rate swaps are cleared through a registered commodities exchange. Each of the Company’s ISDAs and clearing exchange agreements contains provisions under which the Company is required to fully collateralize its obligations under the interest rate swap agreements if at any point the fair value of the swap represents a liability greater than the minimum transfer amount contained within the agreements. The Company is also required to post initial collateral upon execution of certain of its swap transactions. If the Company breaches any of these provisions, it will be required to settle its obligations under the agreements at their termination values, which approximates fair value. The Company uses clearing exchange market prices to determine the fair value of its interest rate swaps. The aggregate fair value of all derivative instruments with credit-risk-related contingent features that are in a net asset position at September 30, 2017 is approximately $6 million including accrued interest, which represents the maximum amount the Company would receive upon termination, which is fully collateralized.

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Capital Stock

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Capital Stock

Capital Stock

Preferred Stock

In February 2017, the Company issued 13,000,000 shares of 8.00% Series B Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, par value $0.01 per share (the “Series B Preferred Stock”), at a public offering price of $25.00 per share. The Series B Preferred Stock is redeemable at $25.00 per share plus accrued and unpaid dividends (whether or not authorized or declared) exclusively at the Company’s option commencing in March 30, 2024, subject to the Company’s right, under limited circumstances, to redeem the Series B Preferred Stock prior to that date. The initial dividend rate for the Series B Preferred Stock, from and including February 27, 2017, to but not including March 30, 2024, will be equal to 8.00% per annum of the $25.00 liquidation preference per share (equivalent to the fixed annual rate of $2.00 per share). On and after March 30, 2024, dividends on the Series B Preferred Stock will accumulate at a percentage of the $25.00 liquidation preference equal to an annual floating rate of the three-month LIBOR plus a spread of 5.791% per annum. The Series B Preferred Stock is entitled to receive, when and as declared, a dividend at a rate of 8.0% per year on the $25.00 liquidation preference before the common stock is paid any dividends and is senior to the common stock with respect to distributions upon liquidation, dissolution or winding up. This transaction was completed in February 2017, pursuant to which the Company received proceeds, net of offering costs, of $314 million.

The Company declared dividends to Series B preferred stockholders of $7 million and $15 million, or $0.50 and $1.18 per preferred share during the quarter and nine months ended September 30, 2017.

In October 2016, the Company issued 5,800,000 shares of 8.00% Series A Cumulative Redeemable Preferred Stock, par value $0.01 per share (the “Series A Preferred Stock”), at a public offering price of $25.00 per share. The Series A Preferred Stock is redeemable at $25.00 per share plus accrued and unpaid dividends (whether or not authorized or declared) exclusively at the Company’s option commencing in October 30, 2021, subject to the Company’s right, under limited circumstances, to redeem the Series A Preferred Stock prior to that date. The Series A Preferred Stock is entitled to receive, when and as declared, a dividend at a rate of 8.0% per year on the $25.00 liquidation preference before the common stock is paid any dividends and is senior to the common stock with respect to distributions upon liquidation, dissolution or winding up. This transaction was completed in October 2016, pursuant to which the Company received proceeds, net of offering costs, of $140 million.

The Company declared dividends to Series A preferred stockholders of $3 million and $9 million, or $0.50 and $1.50 per preferred share during the quarter and nine months ended September 30, 2017.

Common Stock

Our Board of Directors adopted a program that authorizes repurchases of our common stock up to $350 million. Shares of our common stock may be purchased in the open market, including through block purchases, through privately negotiated transactions, or pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.  The timing, manner, price and amount of any repurchases will be determined at our discretion and the program may be suspended, terminated or modified at any time for any reason.  Among other factors, the Company intends to only consider repurchasing shares of our common stock when the purchase price is less than its estimate of its current net asset value per common share. Generally, when the Company repurchases its common stock at a discount to its net asset value, the net asset value of its remaining shares of common stock outstanding increases. In addition, the Company does not intend to repurchase any shares from directors, officers or other affiliates. The program does not obligate the Company to acquire any specific number of shares, and all repurchases will be made in accordance with Rule 10b-18, which sets certain restrictions on the method, timing, price and volume of stock repurchases.

The Company did not repurchase any shares during the quarter and nine months ended September 30, 2017, and has $100 million in its share repurchase program that may be used to repurchase shares in the future.

During the quarters and nine months ended September 30, 2017, the Company declared regular dividends to common shareholders of $0.50 and $1.50 per share or $94 million and $282 million, respectively. During the quarters and nine months ended September 30, 2016, the Company declared regular dividends to common shareholders of $0.48 and $1.44 per share or$91 million and $271 million, respectively, and a special dividend of $0.50 per share to common shareholders of $94 million.

Earnings per share for the quarters and nine months ended September 30, 2017, and 2016, respectively, are computed as follows:

	For the Quarters Ended
	September 30, 2017		September 30, 2016
	(dollars in thousands)
Numerator:
Net income available to common shareholders	$	129,832	$	172,817
Effect of dilutive securities:	—		—
Dilutive net income available to common shareholders	$	129,832	$	172,817
Denominator:
Weighted average basic shares	187,779,794		187,729,765
Effect of dilutive securities	412,317		190,027
Weighted average dilutive shares	188,192,111		187,919,792
Net income per average share attributable to common stockholders - Basic	$	0.69	$	0.92
Net income per average share attributable to common stockholders - Diluted	$	0.69	$	0.92

	For the Nine Months Ended
	September 30, 2017		September 30, 2016
	(dollars in thousands)
Numerator:
Net income available to common shareholders	$	392,977	$	330,042
Effect of dilutive securities:	—		—
Dilutive net income available to common shareholders	$	392,977	$	330,042
Denominator:
Weighted average basic shares	187,773,715		187,727,667
Effect of dilutive securities	403,042		190,027
Weighted average dilutive shares	188,176,757		187,917,694
Net income per average share attributable to common stockholders - Basic	$	2.09	$	1.76
Net income per average share attributable to common stockholders - Diluted	$	2.09	$	1.76

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Accumulated Other Comprehensive Income

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Accumulated Other Comprehensive Income

Accumulated Other Comprehensive Income

The following table presents the changes in the components of Accumulated Other Comprehensive Income (“AOCI”) for the nine months ended September 30, 2017 and 2016:

	September 30, 2017
	(dollars in thousands)
	Unrealized gains (losses) on available-for-sale securities, net		Total Accumulated OCI Balance
Balance as of December 31, 2016	$	718,106	$	718,106
OCI before reclassifications	59,114		59,114
Amounts reclassified from AOCI	35,898		35,898
Net current period OCI	95,012		95,012
Balance as of September 30, 2017	$	813,118	$	813,118

	September 30, 2016
	(dollars in thousands)
	Unrealized gains (losses) on available-for-sale securities, net		Total Accumulated OCI Balance
Balance as of December 31, 2015	$	773,791	$	773,791
OCI before reclassifications	94,059		94,059
Amounts reclassified from AOCI	29,853		29,853
Net current period OCI	123,912		123,912
Balance as of September 30, 2016	$	897,703	$	897,703

The following table presents the details of the reclassifications from AOCI for the nine months ended September 30, 2017 and 2016:

	September 30, 2017			September 30, 2016
Details about Accumulated OCI Components	Amounts Reclassified from Accumulated OCI			Amounts Reclassified from Accumulated OCI			Affected Line on the Consolidated Statements Of Operations
Unrealized gains and losses on available-for-sale securities
	$	7,778		$	13,354		Net realized gains (losses) on sales of investments
	(43,676		)	(43,207		)	Net other-than-temporary credit impairment losses
	$	(35,898	)	$	(29,853	)	Income before income taxes
	—			—			Income taxes
	$	(35,898	)	$	(29,853	)	Net of tax

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Equity Compensation, Employment Agreements and other Benefit Plans

9 Months Ended

Sep. 30, 2017

Compensation Related Costs [Abstract]

Equity Compensation, Employment Agreements and other Benefit Plans

Equity Compensation, Employment Agreements and other Benefit Plans

In accordance with the terms of the Company’s 2007 Equity Incentive Plan (as amended and restated on December 10, 2015) (the “Incentive Plan”), directors, officers and employees of the Company are eligible to receive restricted stock grants. These awards generally have a restriction period lasting between two and ten years depending on the award, after which time the awards fully vest. During the vesting period, these shares may not be sold. There were approximately 6 million shares available for future grants under the Incentive Plan as of September 30, 2017.

During the first quarter of 2016, the Compensation Committee of the Board of Directors of the Company approved a Stock Award Deferral Program (the “Deferral Program”). Under the Deferral Program, non-employee directors and certain executive officers can elect to defer payment of certain stock awards made pursuant to the Equity Plan. Deferred awards are treated as deferred stock units and paid at the earlier of separation from service or a date elected by the participant. Payments are generally made in a lump sum or, if elected by the participant, in five annual installments. Deferred awards receive dividend equivalents during the deferral period in the form of additional deferred stock units. Amounts are paid at the end of the deferral period by delivery of shares from the Incentive Plan (plus cash for any fractional deferred stock units), less any applicable tax withholdings. Deferral elections do not alter any vesting requirements applicable to the underlying stock award.

During the first quarter of 2017 and 2016, the Company granted certain of its employees Restricted Stock Units (“RSU”) awards.  RSU awards are designed to reward certain employees of the Company for services provided over the previous year.  The RSU awards vest equally over a three year period beginning one year from the grant date and will fully vest after three years. The RSU awards are valued at the market price of the Company’s common stock on the grant date and the employees must be employed by the Company on the vesting dates to receive the RSU awards. The Company granted 112 thousand and 266 thousand RSU awards during the first quarter of 2017 and 2016, with a grant date fair value of $2 million and $3 million, respectively, which will be recognized as compensation expense on a straight-line basis over the three year vesting period.

During the first quarter of 2017 and 2016, the Company granted certain of its employees 144 thousand and 180 thousand Performance Share Units (“PSU”) awards, respectively.  PSU awards are designed to align compensation with the Company’s future performance.  The PSU awards include a three year performance period ending on December 31, 2019 and December 31, 2018, respectively.  The final number of shares that will vest will be between 0% to 150% of the total PSU awards granted based on the stock performance of the Company as compared to an index of comparable financial institutions and will cliff vest at the end of the performance period.  The PSU awards are measured at fair value on the grant date which will be recognized as compensation expense ratably over the three year vesting period.  Fair value is determined using a Monte Carlo valuation model developed to value the specific features of the PSU awards, including market based conditions. Inputs into the model include the Company’s historical volatility, the peer average historical volatility, and the correlation coefficient of the volatility.  In addition, inputs also included the share price at the beginning of the measurement period and an estimated total shareholder return for both the Company and the peer group of comparable financial institutions.  Based on the model results, the 144 thousand PSU awards granted during 2017 had a grant date value of $3 million that will cliff vest on December 31, 2019. The 180 thousand PSU awards granted during 2016 had a grant date value of $3 million which will cliff vest on December 31, 2018.

The Company recognized stock based compensation expenses of $1 million and $620 thousand for the quarters ended September 30, 2017, and 2016, respectively. For the nine months ended September 30, 2017, and 2016, the stock based compensation expenses were $3 million and $1 million, respectively.

The Company also maintains a qualified 401(k) plan.  The plan is a retirement savings plan that allows eligible employees to contribute a portion of their wages on a tax-deferred basis under Section 401(k) of the Code. Employees may contribute, through payroll deductions, up to $18,000 if under the age of 50 years and an additional $6,000 “catch-up” contribution for employees 50 years or older. The Company matches 100% of the first 6% of the eligible compensation deferred by employee contributions. The employer funds the 401(k) matching contributions in the form of cash, and participants may direct the Company match to an investment of their choice. The benefit of the Company’s contributions vests immediately. Generally, a participating employee is entitled to distributions from the plans upon termination of employment, retirement, death or disability. The 401(k) expense related to the Company’s qualified plan for the quarters ended September 30, 2017 and 2016 was $84 thousand and $78 thousand, respectively. For the nine months ended September 30, 2017 and 2016, the 401(k) expense related to the Company's qualified plan was $299 thousand and $292 thousand, respectively.

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Income Taxes

9 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

For the quarter ended September 30, 2017 and the year ended December 31, 2016, the Company qualified to be taxed as a REIT under Code Sections 856 through 860. As a REIT, the Company is not subject to federal income tax to the extent that it makes qualifying distributions of taxable income to its stockholders. To maintain qualification as a REIT, the Company must distribute at least 90% of its annual REIT taxable income to its shareholders and meet certain other requirements such as assets it may hold, income it may generate and its shareholder composition. It is generally the Company’s policy to distribute to its shareholders all of the Company’s taxable income.

The state and local tax jurisdictions to which the Company is subject to tax-filing obligations, recognize the Company’s status as a REIT, and therefore, the Company generally does not pay income tax in such jurisdictions. The Company may, however, be subject to certain minimum state and local tax filing fees and its TRSs are subject to federal, state and local taxes. There were no significant income tax expenses for the nine months ended September 30, 2017 and year ended December 31, 2016.

In general, cash dividends declared by the Company will be considered ordinary income to stockholders for income tax purposes. From time to time, a portion of the Company’s dividends may be characterized as capital gains or return of capital distributions.

The Company’s effective tax rate differs from its combined federal, state and city corporate statutory tax rate primarily due to the deduction of dividend distributions required to be paid under Code Section 857(a).

The Company’s 2016, 2015 and 2014 federal, state and local tax returns remain open for examination.

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Credit Risk and Interest Rate Risk

9 Months Ended

Sep. 30, 2017

Offsetting [Abstract]

Credit Risk and Interest Rate Risk

Credit Risk and Interest Rate Risk

The Company’s primary components of market risk are credit risk and interest rate risk. The Company is subject to interest rate risk in connection with its investments in Agency MBS and Non-Agency RMBS, residential mortgage loans, borrowings under repurchase agreements and securitized debt. When the Company assumes interest rate risk, it attempts to minimize interest rate risk through asset selection, hedging and matching the income earned on mortgage assets with the cost of related liabilities.

The Company attempts to minimize credit risk through due diligence and asset selection by purchasing loans underwritten to agreed-upon specifications of selected originators as well as on-going portfolio monitoring. The Company has established a whole loan target market including prime and subprime borrowers, Alt-A documentation, geographic diversification, owner-occupied property, and moderate loan-to-value ratios. These factors are considered to be important indicators of credit risk.

By using derivative instruments and repurchase agreements, the Company is exposed to counterparty credit risk if counterparties to the contracts do not perform as expected. If a counterparty fails to perform on a derivative hedging instrument, the Company’s counterparty credit risk is equal to the amount reported as a derivative asset on its balance sheet to the extent that amount exceeds collateral obtained from the counterparty or, if in a net liability position, the extent to which collateral posted exceeds the liability to the counterparty. The amounts reported as a derivative asset/(liability) are derivative contracts in a gain/(loss) position, and to the extent subject to master netting arrangements, net of derivatives in a loss/(gain) position with the same counterparty and collateral received/(pledged). If the counterparty fails to perform on a repurchase agreement, the Company is exposed to a loss to the extent that the fair value of collateral pledged exceeds the liability to the counterparty. The Company attempts to minimize counterparty credit risk by evaluating and monitoring the counterparty’s credit, executing master netting arrangements and obtaining collateral, and executing contracts and agreements with multiple counterparties to reduce exposure to a single counterparty.

Our repurchase agreements and derivative transactions are governed by underlying agreements that provide for a right of setoff under master netting arrangements, including in the event of default or in the event of bankruptcy of either party to the transactions. The Company presents its assets and liabilities subject to such arrangements on a net basis in our consolidated statements of financial condition. The following table presents information about our liabilities that are subject to such arrangements and can potentially be offset on our consolidated statements of financial condition as of September 30, 2017 and December 31, 2016.

	September 30, 2017
	(dollars in thousands)
	Gross Amounts of Recognized  Assets (Liabilities)			Gross Amounts Offset in the Consolidated Statements of Financial Position			Net Amounts Offset in the Consolidated Statements of Financial Position			Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position
										Financial Instruments		Cash Collateral (Received) Pledged (1)		Net Amount
Repurchase Agreements	$	(6,709,821	)	$	—		$	(6,709,821	)	$	8,150,308	$	1,986	$	1,442,473
Interest Rate Swaps - Gross Assets	20,364			(5,110		)	15,254			—		46,339		61,593
Interest Rate Swaps - Gross Liabilities	(5,110		)	5,110			—			—		—		—
Treasury Futures - Gross Assets	4,864			—			4,864			—		997		5,861
Treasury Futures - Gross Liabilities	—			—			—			—		—		—
Swaptions - Gross Assets	2,407			—			2,407			—		—		2,407
Swaptions - Gross Liabilities	(1,204		)	—			(1,204		)	1,279		—		75
Total Liabilities	$	(6,688,500	)	$	—		$	(6,688,500	)	$	8,151,587	$	49,322	$	1,512,409

(1) Included in other assets

	December 31, 2016
	(dollars in thousands)
	Gross Amounts of Recognized  Assets (Liabilities)			Gross Amounts Offset in the Consolidated Statements of Financial Position			Net Amounts Offset in the Consolidated Statements of Financial Position			Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position
										Financial Instruments		Cash Collateral (Received) Pledged (1)		Net Amount
Repurchase Agreements	$	(5,600,903	)	$	—		$	(5,600,903	)	$	7,033,866	$	2,545	$	1,435,508
Interest Rate Swaps - Gross Assets	14,435			(14,435		)	—			—		—		—
Interest Rate Swaps - Gross Liabilities	(14,875		)	14,875			—			—		39,627		39,627
Treasury Futures - Gross Assets	1,785			—			1,785			—		3,320		5,105
Treasury Futures - Gross Liabilities	—			—			—			—		—		—
Swaptions - Gross Assets	7,892			—			7,892			—		—		7,892
Swaptions - Gross Liabilities	(2,350		)	—			(2,350		)	10,341		—		7,991
Total Liabilities	$	(5,594,016	)	$	440		$	(5,593,576	)	$	7,044,207	$	45,492	$	1,496,123

(1) Included in other assets

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

From time to time, the Company may become involved in various claims and legal actions arising in the ordinary course of business. In connection with certain re-securitization transactions engaged in by the Company, it has the obligation under certain circumstances to repurchase assets from the VIE upon breach of certain representations and warranties.

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Subsequent Events

9 Months Ended

Sep. 30, 2017

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

Subsequent to September 30, 2017, $811 million of securitized debt issued by the Company was retired and new securitized debt was issued.

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Summary of the Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Basis of Presentation and Consolidation

Basis of Presentation and Consolidation

The accompanying consolidated financial statements and related notes of the Company have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). In the opinion of management, all adjustments considered necessary for a fair presentation of the Company's financial position, results of operations and cash flows have been included. Certain prior period amounts have been reclassified to conform to the current period's presentation.

The consolidated financial statements include, the Company’s accounts, the accounts of its wholly-owned subsidiaries, and variable interest entities (“VIEs”) in which the Company is the primary beneficiary. All intercompany balances and transactions have been eliminated in consolidation.

The Company uses securitization trusts considered to be VIEs in its securitization and re-securitization transactions. VIEs are defined as entities in which equity investors (i) do not have the characteristics of a controlling financial interest, or (ii) do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support from other parties. The entity that consolidates a VIE is known as its primary beneficiary, and is generally the entity with (i) the power to direct the activities that most significantly impact the VIEs’ economic performance, and (ii) the right to receive benefits from the VIE or the obligation to absorb losses of the VIE that could be significant to the VIE. For VIEs that do not have substantial on-going activities, the power to direct the activities that most significantly impact the VIEs’ economic performance may be determined by an entity’s involvement with the design and structure of the VIE.

The trusts are structured as pass through entities that receive principal and interest on the underlying collateral and distribute those payments to the security holders. The assets held by the securitization entities are restricted in that they can only be used to fulfill the obligations of the securitization entity. The Company’s risks associated with its involvement with these VIEs are limited to its risks and rights as a holder of the security it has retained.

Determining the primary beneficiary of a VIE requires significant judgment. The Company determined that for the securitizations it consolidates, its ownership provides the Company with the obligation to absorb losses or the right to receive benefits from the VIE that could be significant to the VIE. In addition, the Company has the power to direct the activities of the VIEs that most significantly impact the VIEs’ economic performance (“power”) such as rights to direct servicer activity or the Company was determined to have power in connection with its involvement with the purpose and design of the VIE.

The Company’s interest in the assets held by these securitization vehicles, which are consolidated on the Company’s Statements of Financial Condition, is restricted by the structural provisions of these trusts, and a recovery of the Company’s investment in the vehicles will be limited by each entity’s distribution provisions. The liabilities of the securitization vehicles, which are also consolidated on the Company’s Statements of Financial Condition, are non-recourse to the Company, and can generally only be satisfied from each securitization vehicle’s respective asset pool.

The assets of securitization entities are comprised of senior classes of residential mortgage backed securities (“RMBS”) or residential mortgage loans.

Statements of Financial Condition Presentation

Statements of Financial Condition Presentation

The Company’s Consolidated Statements of Financial Condition include both the Company’s direct assets and liabilities and the assets and liabilities of consolidated securitization vehicles. Assets of each consolidated VIE can only be used to satisfy the obligations of that VIE, and the liabilities of consolidated VIEs are non-recourse to the Company. The Company is not obligated to provide, nor does it intend to provide, any financial support to these consolidated securitization vehicles. The notes to the consolidated financial statements describe the Company’s assets and liabilities including the assets and liabilities of consolidated securitization vehicles.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Although the Company’s estimates contemplate current conditions and how it expects them to change in the future, it is reasonably possible that actual conditions could be materially different than anticipated in those estimates, which could have a material adverse impact on the Company’s results of operations and its financial condition. Management has made significant estimates including in accounting for income recognition and OTTI on Agency and Non-Agency RMBS and IO MBS (Note 3), valuation of Agency MBS and Non-Agency RMBS (Notes 3 and 5), residential mortgage loans (Note 4), securitized debt (Note 7) and derivative instruments (Notes 5 and 9). Actual results could differ materially from those estimates.

Income Taxes

Income Taxes

The Company does not have any unrecognized tax positions that would affect its financial statements or require disclosure.

Fair Value Disclosure

Fair Value Disclosure

The Company has elected to account for Agency MBS investments acquired on or after July 1, 2017 under the fair value option. Under the fair value option, these investments will be carried at fair value, with changes in fair value reported in earnings (included as part of “Net unrealized gains (losses) on financial instruments at fair value”). Consistent with all other investments for which the Company has elected the fair value option, the Company will recognize revenue on a prospective basis in accordance with guidance in ASC 325-40.

All Agency MBS investments owned prior to this date will continue to be carried at fair value with changes in fair value reported in other comprehensive income (OCI) as available-for-sale investments. All revenue recognition for these Agency MBS investments owned prior to July 1, 2017 will be in accordance with ASC 310-20.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Derivatives and Hedging - Targeted improvements to Accounting for Hedging Activities (Topic 815)

In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging - Targeted improvements to Accounting for Hedging Activities. This update is issued with the objective of improving the financial reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its financial statements. In addition, the amendments in this update make certain targeted improvements to simplify the application of the hedge accounting guidance in current GAAP. The guidance in the ASU is effective for the Company as of January 1, 2019. Early adoption is allowed. The Company is not planning to early adopt and is currently evaluating what impact this update will have on the consolidated financial statements.

Business Combinations - (Topic 805)

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations - Clarifying the Definition of a Business. This update clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. Under the current implementation guidance in Topic 805, there are three elements of a business-inputs, processes, and outputs. While an integrated set of assets and activities (collectively referred to as a “set”) that is a business usually has outputs, outputs are not required to be present. The amendments in this Update provide a screen to determine when a set is not a business. The screen requires that when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the set is not a business. This screen reduces the number of transactions that need to be further evaluated. The guidance in the ASU is effective for the Company as of January 1, 2018. Early adoption is allowed. The amendments in this update should be applied prospectively on or after the effective date. No disclosures are required at transition. The Company is not planning to early adopt and is currently evaluating what impact this update will have on the consolidated financial statements.

Statement of Cash Flows - Restricted Cash - (Topic 230)

In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows - Restricted Cash. This update requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The amendments in this Update do not provide a definition of restricted cash or restricted cash equivalents. The guidance in the ASU is effective for the Company as of January 1, 2018. Early adoption is allowed. The amendments in this update should be applied using a retrospective transition method to each period presented. The Company is not planning to early adopt and is currently evaluating what impact this update will have on the consolidated financial statements.

Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments - (Topic 230)

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments. This update provides guidance on eight specific cash flow issues. The guidance is intended to reduce diversity in practice on those issues across all industries. The guidance in the ASU is effective for the Company as of January 1, 2018. Early adoption is allowed. The guidance is to be applied retrospectively, unless it is impracticable to do so for an issue, then the amendments related to that issue would be applied prospectively. The Company did not elect to early adopt the provisions of this update. The Company is currently evaluating what impact this update will have on the consolidated financial statements.

Financial Instruments - Credit Losses - (Topic 326)

In June 2016, the FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments. This update replaces the current model for recognizing credit losses from an incurred credit loss model to a current expected credit loss (CECL) model for instruments measured at amortized cost and requires entities to record allowances for available-for-sale (AFS) debt securities when the fair value of an AFS debt security is below the amortized cost of the asset rather than reduce the carrying amount, as the Company does under the current OTTI model. This update also simplifies the accounting model for purchased credit-impaired debt securities and loans. The changes in the allowances created in accordance with this update will be recorded in earnings. The update also expands the disclosure requirements regarding the Company's assumptions, models, and methods for estimating the expected credit losses. In addition, the Company will disclose the amortized cost balance for each class of financial asset by credit quality indicator, disaggregated by the year of origination. The guidance in the ASU is effective for the Company as of January 1, 2020. Early adoption is allowed, beginning January 1, 2019. The standard requires entities to record a cumulative-effect adjustment to the statement of financial position as of the beginning of the first reporting period in which the guidance is effective. The Company is currently evaluating what impact this update will have on the consolidated financial statements.

Share Based Payments - (Topic 718)

In March 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting. Under this update companies will no longer record excess tax benefits and certain tax deficiencies associated with an award of equity instruments in additional paid-in capital. Instead, they will record all excess tax benefits and tax deficiencies as income tax expense or benefit in the income statement when the awards vest or are settled, and additional paid-in capital pools will be eliminated. The updated guidance will also allow the Company to repurchase more shares than it can today for tax withholding purposes without triggering liability accounting and to make a policy election to account for forfeitures as they occur. The guidance is to be applied using a modified retrospective transition method with a cumulative-effect adjustment recorded in retained earnings. The Company has adopted this guidance as of January 1, 2017. The adoption of this guidance did not have a significant impact on the Company's consolidated financial statements.

Contingent Put and Call Options in Debt Instruments - (Topic 815)

In March 2016, the FASB issued ASU No. 2016-06, Contingent Put and Call Options in Debt Instruments Accounting.  This update clarifies that when a call or put option in a debt instrument can accelerate the repayment of principal on the debt instrument, a reporting entity does not need to assess whether the contingent event that triggers the ability to exercise the call or put option is related to interest rates or credit risk in determining whether the option should be accounted for separately as a derivative. The new guidance applies to existing debt instruments (or hybrid financial instruments that are determined to have a debt host) using a modified retrospective method as of the beginning of the period of adoption. The Company has adopted this guidance as of January 1, 2017. The adoption of this guidance did not have a significant impact on the Company’s consolidated financial statements.

Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships - (Topic 815)

In March 2016, the FASB issued ASU No. 2016-05, Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships. The amendments in this update clarify that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument under Topic 815 does not, in and of itself, require de-designation of that hedging relationship provided that all other hedge accounting criteria continue to be met. The Company has adopted this guidance as of January 1, 2017. The Company currently does not apply hedge accounting for GAAP reporting purposes, therefore this guidance did not have a significant impact on the Company’s consolidated financial statements.

Financial Instruments-Overall (Subtopic 825-10)

In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. This update changes how the Company will present changes in the fair value of financial liabilities measured under the fair value option that are attributable to our own credit.  Under the updated guidance, the Company will record changes in instrument-specific credit risk for financial liabilities measured under the fair value option in other comprehensive income.  The update also requires fair value measurement for equity investments that do not result in consolidation and are not accounted for under the equity method to be measured at fair value with any changes in fair value recognized in net income.  The update also eliminates the requirement to disclose the methods and significant assumptions used to estimate the fair value of financial instruments measured at amortized cost. In addition, the Company will have to use the exit price notion when measuring the fair value of financial instruments measured at amortized cost for disclosure purposes.  The guidance in the ASU is effective for the Company as of January 1, 2018. Early adoption for certain provisions of the update is allowed.  Any adjustment as a result of the adoption of this standard will be recorded as a cumulative-effect adjustment to beginning retained earnings as of the first period in which the guidance is adopted.  The Company did not elect to early adopt the provisions of this update and is currently evaluating what impact this update will have on the consolidated financial statements.

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Mortgage-Backed Securities (Tables)

9 Months Ended

Sep. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation

The tables below present amortized cost, fair value and unrealized gain/losses of Company's MBS investments as of September 30, 2017 and December 31, 2016.

			September 30, 2017
			(dollars in thousands)
	Principal or Notional Value		Total Premium		Total Discount			Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses			Net Unrealized Gain/(Loss)
Non-Agency RMBS
Senior	$	2,821,535	$	224	$	(1,282,801	)	$	1,538,958	$	2,304,611	$	765,653	$	—		$	765,653
Senior, interest-only	4,948,265		267,964		—			267,964		212,662		13,620		(68,922		)	(55,302		)
Subordinated	531,526		10,764		(188,169		)	354,121		421,487		67,430		(64		)	67,366
Subordinated, interest-only	256,286		12,968		—			12,968		11,588		860		(2,240		)	(1,380		)
Agency MBS
Residential	2,316,838		128,388		—			2,445,226		2,428,112		7,606		(24,720		)	(17,114		)
Commercial	1,774,802		44,913		(4,732		)	1,814,983		1,811,950		13,467		(16,500		)	(3,033		)
Interest-only	3,176,110		121,353		—			121,353		114,810		1,226		(7,769		)	(6,543		)
Total	$	15,825,362	$	586,574	$	(1,475,702	)	$	6,555,573	$	7,305,220	$	869,862	$	(120,215	)	$	749,647

			December 31, 2016
			(dollars in thousands)
	Principal or Notional Value		Total Premium		Total Discount			Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses			Net Unrealized Gain/(Loss)
Non-Agency RMBS
Senior	$	3,190,947	$	231	$	(1,412,058	)	$	1,779,120	$	2,511,003	$	732,133	$	(250	)	$	731,883
Senior, interest-only	5,648,339		292,396		—			292,396		253,539		18,674		(57,531		)	(38,857		)
Subordinated	673,259		16,352		(212,734		)	476,877		553,498		77,857		(1,236		)	76,621
Subordinated, interest-only	266,927		13,878		—			13,878		12,024		—		(1,854		)	(1,854		)
Agency MBS
Residential	2,594,570		149,872		—			2,744,442		2,705,978		11,235		(49,699		)	(38,464		)
Commercial	1,331,543		37,782		(2,688		)	1,366,637		1,316,975		175		(49,837		)	(49,662		)
Interest-only	3,356,491		152,175		—			152,175		144,800		1,893		(9,268		)	(7,375		)
Total	$	17,062,076	$	662,686	$	(1,627,480	)	$	6,825,525	$	7,497,817	$	841,967	$	(169,675	)	$	672,292

Schedule of Changes in Accretable Yield

The table below presents changes in accretable yield, or the excess of the security’s cash flows expected to be collected over the Company’s investment, solely as it pertains to the Company’s Non-Agency RMBS portfolio accounted for according to the provisions of ASC 310-30.

	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)						(dollars in thousands)
Balance at beginning of period	$	1,383,188		$	1,714,592		$	1,550,110		$	1,742,744
Purchases	8,196			18,316			18,380			60,915
Yield income earned	(66,042		)	(69,850		)	(202,618		)	(141,256		)
Reclassification (to) from non-accretable difference	53,884			(29,490		)	15,777			(2,031		)
Sales and deconsolidation	(17,755		)	(12,907		)	(20,178		)	(39,711		)
Balance at end of period	$	1,361,471		$	1,620,661		$	1,361,471		$	1,620,661

Schedule of Non-Agency RMBS Having Deteriorated Credit When Acquired

The table below presents the outstanding principal balance and related amortized cost at September 30, 2017 and December 31, 2016 as it pertains to the Company’s Non-Agency RMBS portfolio accounted for according to the provisions of ASC 310-30.

	For the Quarter Ended		For the Year Ended
	September 30, 2017		December 31, 2016
	(dollars in thousands)
Outstanding principal balance:
Beginning of period	$	2,910,151	$	3,550,698
End of period	$	2,772,746	$	3,138,265
Amortized cost:
Beginning of period	$	1,546,656	$	1,958,726
End of period	$	1,449,531	$	1,695,079

Schedule of Temporary Impairment Losses, Investments

The following tables present the gross unrealized losses and estimated fair value of the Company’s RMBS by length of time that such securities have been in a continuous unrealized loss position at September 30, 2017 and December 31, 2016. All securities in an unrealized loss position have been evaluated by the Company for OTTI as discussed in Note 2(d) of 2016, Form 10-K.

						September 30, 2017
						(dollars in thousands)
	Unrealized Loss Position for Less than 12 Months						Unrealized Loss Position for 12 Months or More						Total
	Estimated Fair Value		Unrealized Losses			Number of Securities	Estimated Fair Value		Unrealized Losses			Number of Securities	Estimated Fair Value		Unrealized Losses			Number of Securities
Non-Agency RMBS
Senior	$	—	$	—		—	$	—	$	—		—	$	—	$	—		—
Senior, interest-only	82,130		(15,487		)	54	73,232		(53,435		)	93	155,362		(68,922		)	147
Subordinated	5,353		(64		)	7	—		—			1	5,353		(64		)	8
Subordinated, interest-only	574		(331		)	2	4,220		(1,909		)	2	4,794		(2,240		)	4
Agency MBS
Residential	1,932,140		(17,187		)	95	234,050		(7,533		)	11	2,166,190		(24,720		)	106
Commercial	876,181		(15,291		)	241	30,311		(1,209		)	1	906,492		(16,500		)	242
Interest-only	29,250		(1,003		)	12	58,031		(6,766		)	21	87,281		(7,769		)	33
Total	$	2,925,628	$	(49,363	)	411	$	399,844	$	(70,852	)	129	$	3,325,472	$	(120,215	)	540

						December 31, 2016
						(dollars in thousands)
	Unrealized Loss Position for Less than 12 Months						Unrealized Loss Position for 12 Months or More						Total
	Estimated Fair Value		Unrealized Losses			Number of Securities	Estimated Fair Value		Unrealized Losses			Number of Securities	Estimated Fair Value		Unrealized Losses			Number of Securities
Non-Agency RMBS
Senior	$	12,384	$	(250	)	3	$	—	$	—		—	$	12,384	$	(250	)	3
Senior, interest-only	96,399		(13,600		)	62	78,516		(43,931		)	86	174,915		(57,531		)	148
Subordinated	56,015		(412		)	7	2,826		(824		)	4	58,841		(1,236		)	11
Subordinated, interest-only	748		(230		)	2	11,276		(1,624		)	3	12,024		(1,854		)	5
Agency MBS
Residential	2,338,910		(48,084		)	106	54,943		(1,615		)	1	2,393,853		(49,699		)	107
Commercial	1,247,923		(45,802		)	646	51,733		(4,035		)	46	1,299,656		(49,837		)	692
Interest-only	63,506		(2,170		)	20	52,963		(7,098		)	16	116,469		(9,268		)	36
Total	$	3,815,885	$	(110,548	)	846	$	252,257	$	(59,127	)	156	$	4,068,142	$	(169,675	)	1002

Other than Temporary Impairment, Credit Losses Recognized in Earnings

A summary of the OTTI included in earnings for the quarters and nine months ended September 30, 2017 and 2016 are presented below.

	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)
Total other-than-temporary impairment losses	$	(784	)	$	(993	)	$	(4,245	)	$	(8,555	)
Portion of loss recognized in other comprehensive income (loss)	(10,684		)	(10,581		)	(39,431		)	(34,652		)
Net other-than-temporary credit impairment losses	$	(11,468	)	$	(11,574	)	$	(43,676	)	$	(43,207	)

The following table presents a roll forward of the credit loss component of OTTI on the Company’s Non-Agency RMBS for which a portion of loss was previously recognized in OCI. The table delineates between those securities that are recognizing OTTI for the first time as opposed to those that have previously recognized OTTI.

	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)
Cumulative credit loss beginning balance	$	571,639		$	546,187		$	556,485		$	529,112
Additions:
Other-than-temporary impairments not previously recognized	—			6,184			12,399			17,137
Reductions for securities sold or deconsolidated during the period	(4,965		)	(2,630		)	(12,405		)	(6,890		)
Increases related to other-than-temporary impairments on securities with previously recognized other-than-temporary impairments	11,468			5,390			29,302			26,069
Reductions for increases in cash flows expected to be collected over the remaining life of the securities	(3,241		)	(1,494		)	(10,880		)	(11,791		)
Cumulative credit impairment loss ending balance	$	574,901		$	553,637		$	574,901		$	553,637

Other than Temporary Impairment of Investments Recorded in Earnings, Significant Inputs and Assumptions

The significant inputs used to measure the component of OTTI recognized in earnings for the Company’s Non-Agency RMBS for the periods reported are summarized as follows:

	For the Nine Months Ended
	September 30, 2017	September 30, 2016
Loss Severity
Weighted Average	67%	59%
Range	28% - 89%	25% - 85%
60+ days delinquent
Weighted Average	21%	21%
Range	11% - 27%	0% - 40%
Credit Enhancement (1)
Weighted Average	15%	29%
Range	0% - 50%	0% - 100%
3 Month CPR
Weighted Average	13%	5%
Range	2% - 24%	0% - 19%
12 Month CPR
Weighted Average	13%	4%
Range	4% - 19%	0% - 21%

(1)Calculated as the combined credit enhancement to the Re-REMIC and underlying from each of their respective capital structures.

Summary of Unrealized Gains and Losses on MBS

The following tables present a summary of unrealized gains and losses at September 30, 2017 and December 31, 2016. IO MBS included in the tables below represent the right to receive a specified portion of the contractual interest cash flows of the underlying principal balance of specific securities. At September 30, 2017, IO MBS had a net unrealized loss of $63 million and had an amortized cost of $402 million. At December 31, 2016, IO MBS had a net unrealized loss of $48 million and had an amortized cost of $458 million. The fair value of IOs at September 30, 2017 and December 31, 2016 was $339 million and $410 million, respectively. All changes in fair value of IOs are reflected in Net Income in the Consolidated Statements of Operations.

			September 30, 2017
			(dollars in thousands)
	Gross Unrealized Gain Included in Accumulated Other Comprehensive Income		Gross Unrealized Gain Included in Cumulative Earnings		Total Gross Unrealized Gain		Gross Unrealized Loss Included in Accumulated Other Comprehensive Income			Gross Unrealized Loss Included in Cumulative Earnings			Total Gross Unrealized Loss
Non-Agency RMBS
Senior	$	765,653	$	—	$	765,653	$	—		$	—		$	—
Senior, interest-only	—		13,620		13,620		—			(68,922		)	(68,922		)
Subordinated	63,348		4,082		67,430		(45		)	(19		)	(64		)
Subordinated, interest-only	—		860		860		—			(2,240		)	(2,240		)
Agency MBS
Residential	7,606		—		7,606		(22,263		)	(2,457		)	(24,720		)
Commercial	13,339		128		13,467		(14,520		)	(1,980		)	(16,500		)
Interest-only	—		1,226		1,226		—			(7,769		)	(7,769		)
Total	$	849,946	$	19,916	$	869,862	$	(36,828	)	$	(83,387	)	$	(120,215	)

			December 31, 2016
			(dollars in thousands)
	Gross Unrealized Gain Included in Accumulated Other Comprehensive Income		Gross Unrealized Gain Included in Cumulative Earnings		Total Gross Unrealized Gain		Gross Unrealized Loss Included in Accumulated Other Comprehensive Income			Gross Unrealized Loss Included in Cumulative Earnings			Total Gross Unrealized Loss
Non-Agency RMBS
Senior	$	732,133	$	—	$	732,133	$	(250	)	$	—		$	(250	)
Senior, interest-only	—		18,674		18,674		—			(57,531		)	(57,531		)
Subordinated	74,584		3,273		77,857		(235		)	(1,001		)	(1,236		)
Subordinated, interest-only	—		—		—		—			(1,854		)	(1,854		)
Agency MBS
Residential	11,235		—		11,235		(49,699		)	—			(49,699		)
Commercial	175		—		175		(49,837		)	—			(49,837		)
Interest-only	—		1,893		1,893		—			(9,268		)	(9,268		)
Total	$	818,127	$	23,840	$	841,967	$	(100,021	)	$	(69,654	)	$	(169,675	)

Residential Mortgage Backed Securities Collateral Characteristics

The following tables provide a summary of the Company’s MBS portfolio at September 30, 2017 and December 31, 2016.

	September 30, 2017
	Principal or Notional Value at Period-End (dollars in thousands)		Weighted Average Amortized Cost Basis		Weighted Average Fair Value		Weighted Average Coupon		Weighted Average Yield at Period-End (1)
Non-Agency RMBS
Senior	$	2,821,535	$	54.54	$	81.68	4.4	%	16.7	%
Senior, interest-only	4,948,265		5.42		4.30		1.4	%	7.8	%
Subordinated	531,526		66.62		79.30		4.1	%	9.2	%
Subordinated, interest-only	256,286		5.06		4.52		1.0	%	8.4	%
Agency MBS
Residential pass-through	2,316,838		105.54		104.80		3.8	%	2.9	%
Commercial pass-through	1,774,802		102.26		102.09		3.6	%	3.2	%
Interest-only	3,176,110		3.82		3.61		0.7	%	3.5	%

(1) Bond Equivalent Yield at period end.

	December 31, 2016
	Principal or Notional Value at Period-End (dollars in thousands)		Weighted Average Amortized Cost Basis		Weighted Average Fair Value		Weighted Average Coupon		Weighted Average Yield at Period-End (1)
Non-Agency RMBS
Senior	$	3,190,947	$	55.76	$	78.69	4.3	%	15.5	%
Senior, interest-only	5,648,339		5.18		4.49		1.5	%	11.7	%
Subordinated	673,259		70.83		82.21		3.8	%	9.2	%
Subordinated, interest-only	266,927		5.20		4.50		1.1	%	13.5	%
Agency MBS
Residential pass-through	2,594,570		105.78		104.29		3.9	%	3.0	%
Commercial pass-through	1,331,543		102.64		98.91		3.6	%	2.9	%
Interest-only	3,356,491		4.53		4.31		0.8	%	3.5	%

(1) Bond Equivalent Yield at period end.

Credit Ratings of Residential Mortgage-Backed Securities

The following table presents the weighted average credit rating of the Company’s Non-Agency RMBS portfolio at September 30, 2017 and December 31, 2016.

	September 30, 2017		December 31, 2016
AAA	0.3	%	0.3	%
AA	0.3	%	0.3	%
A	0.6	%	0.7	%
BBB	0.4	%	0.7	%
BB	2.9	%	3.0	%
B	2.1	%	3.9	%
Below B	62.4	%	67.2	%
Not Rated	31.0	%	23.9	%
Total	100.0	%	100.0	%

Schedule of Mortgage-Backed Securities by Estimated Weighted Average Life Classification

The following tables provide a summary of the fair value and amortized cost of the Company’s MBS at September 30, 2017 and December 31, 2016 according to their estimated weighted-average life classifications. The weighted-average lives of the MBS in the tables below are based on lifetime expected prepayment rates using an industry prepayment model for the Agency MBS portfolio and the Company’s prepayment assumptions for the Non-Agency RMBS. The prepayment model considers current yield, forward yield, steepness of the interest rate curve, current mortgage rates, mortgage rates of the outstanding loan, loan age, margin, and volatility.

	September 30, 2017
	(dollars in thousands)
	Weighted Average Life
	Less than one year		Greater than one year and less than five years		Greater than five years and less than ten years		Greater than ten years		Total
Fair value
Non-Agency RMBS
Senior	$	5,611	$	757,644	$	881,904	$	659,452	$	2,304,611
Senior interest-only	113		55,264		72,087		85,198		212,662
Subordinated	—		83,242		183,777		154,468		421,487
Subordinated interest-only	—		133		11,455		—		11,588
Agency MBS
Residential	—		32,666		2,395,446		—		2,428,112
Commercial	—		46,263		16,817		1,748,870		1,811,950
Interest-only	—		82,985		27,122		4,703		114,810
Total fair value	$	5,724	$	1,058,197	$	3,588,608	$	2,652,691	$	7,305,220
Amortized cost
Non-Agency RMBS
Senior	$	5,457	$	549,443	$	563,522	$	420,536	$	1,538,958
Senior interest-only	1,301		78,615		91,461		96,587		267,964
Subordinated	—		67,164		152,048		134,909		354,121
Subordinated interest-only	—		152		12,816		—		12,968
Agency MBS
Residential	—		33,035		2,412,191		—		2,445,226
Commercial	—		47,639		17,216		1,750,128		1,814,983
Interest-only	—		87,733		29,200		4,420		121,353
Total amortized cost	$	6,758	$	863,781	$	3,278,454	$	2,406,580	$	6,555,573

	December 31, 2016
	(dollars in thousands)
	Weighted Average Life
	Less than one year		Greater than one year and less than five years		Greater than five years and less than ten years		Greater than ten years		Total
Fair value
Non-Agency RMBS
Senior	$	25,612	$	508,979	$	1,267,000	$	709,412	$	2,511,003
Senior interest-only	417		37,796		115,780		99,546		253,539
Subordinated	—		94,793		238,630		220,075		553,498
Subordinated interest-only	—		—		12,024		—		12,024
Agency MBS
Residential	—		429,869		2,276,109		—		2,705,978
Commercial	—		47,354		16,833		1,252,788		1,316,975
Interest-only	—		75,863		63,715		5,222		144,800
Total fair value	$	26,029	$	1,194,654	$	3,990,091	$	2,287,043	$	7,497,817
Amortized cost
Non-Agency RMBS
Senior	$	21,423	$	403,250	$	868,624	$	485,823	$	1,779,120
Senior interest-only	1,992		50,252		134,642		105,510		292,396
Subordinated	—		76,287		195,538		205,052		476,877
Subordinated interest-only	—		—		13,878		—		13,878
Agency MBS
Residential	—		438,270		2,306,172		—		2,744,442
Commercial	—		49,027		17,247		1,300,363		1,366,637
Interest-only	—		77,598		69,333		5,244		152,175
Total amortized cost	$	23,415	$	1,094,684	$	3,605,434	$	2,101,992	$	6,825,525

Schedule of Collateral Characteristics of Underlying Mortgages of Non-Agency RMBS Portfolio

The Non-Agency RMBS in the Portfolio have the following collateral characteristics at September 30, 2017 and December 31, 2016.

	September 30, 2017				December 31, 2016
Weighted average maturity (years)		20.9				21.6
Weighted average amortized loan to value (1)		65.1		%		66.5		%
Weighted average FICO (2)		674				675
Weighted average loan balance (in thousands)		$	320			$	319
Weighted average percentage owner occupied		83.9		%		83.2		%
Weighted average percentage single family residence		65.7		%		65.8		%
Weighted average current credit enhancement		2.2		%		2.3		%
Weighted average geographic concentration of top four states	CA	32.0		%	CA	32.1		%
	NY	8.4		%	FL	8.1		%
	FL	8.2		%	NY	7.9		%
	NJ	2.7		%	NJ	2.7		%

(1) Value represents appraised value of the collateral at the time of loan origination.

(2) FICO as determined at the time of loan origination.

Schedule of Percentage of Non-Agency RMBS by Year Originated

The table below presents the origination year of the underlying loans related to the Company’s portfolio of Non-Agency RMBS at September 30, 2017 and December 31, 2016.

Origination Year	September 30, 2017		December 31, 2016
2003 and prior	3.6	%	3.6	%
2004	4.8	%	4.2	%
2005	19.7	%	20.2	%
2006	39.8	%	38.0	%
2007	29.6	%	31.3	%
2008	1.7	%	1.8	%
2009 and later	0.8	%	0.9	%
Total	100.0	%	100.0	%

Schedule of Gains and Losses from Sales of Investments

The proceeds and gross realized gains and gross realized losses from sales of investments for the quarters and nine months ended September 30, 2017 and 2016 are as follows:

	For the Quarters Ended						For the Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
	(dollars in thousands)
Proceeds from sales	$	598,752		$	58,036		$	772,496		$	2,697,239
Gross realized gains	6,902			3,622			17,468			16,798
Gross realized losses	(6,901		)	(543		)	(7,759		)	(9,763		)
Net realized gain (loss)	$	1		$	3,079		$	9,709		$	7,035

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Loans Held for Investment (Tables)

9 Months Ended

Sep. 30, 2017

Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]

Summary of Changes in Carrying Value of Securitized Loans Held for Investment Carried at Fair Value

The following table provides a summary of the changes in the carrying value of Loans held for investment at fair value at September 30, 2017 and December 31, 2016:

	For the Nine Months Ended			For the Year Ended
	September 30, 2017			December 31, 2016
	(dollars in thousands)
Balance, beginning of period	$	8,753,653		$	4,768,416
Purchases	5,835,799			4,897,370
Principal paydowns	(1,298,856		)	(1,022,414		)
Sales and settlements	2,942			5,007
Net periodic accretion (amortization)	(27,310		)	(41,363		)
Change in fair value	271,824			146,637
Balance, end of period	$	13,538,052		$	8,753,653

Schedule of Percentage of Securitized Loans Held for Investment Carried at Fair Value by Year Originated

The loan portfolio for all residential mortgages were originated during the following years:

Origination Year	September 30, 2017		December 31, 2016
2002 and prior	7.7	%	8.9	%
2003	6.9	%	5.2	%
2004	15.3	%	11.9	%
2005	20.9	%	20.5	%
2006	21.8	%	22.0	%
2007	18.8	%	20.9	%
2008	5.9	%	6.5	%
2009	0.6	%	0.6	%
2010 and later	2.1	%	3.5	%
Total	100.0	%	100.0	%

Seasoned Subprime Residential Mortgage Loans

Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]

Schedule of Securitized Loans Held for Investment Carried at Fair Value Key Characteristics of Underlying Collateral

The following table presents a summary of key characteristics of the residential loan portfolio at September 30, 2017 and December 31, 2016:

	September 30, 2017				December 31, 2016
Number of loans		147,340				95,155
Weighted average maturity (years)		18.8				19.8
Weighted average loan to value (1)		87.9		%		86.9		%
Weighted average FICO (1)		629				627
Weighted average loan balance (in thousands)		$	90			$	93
Weighted average percentage owner occupied		94.0		%		96.6		%
Weighted average percentage single family residence		85.0		%		85.0		%
Weighted average geographic concentration of top five states	CA	9.2		%	CA	10.0		%
	FL	7.1		%	FL	6.7		%
	OH	6.2		%	OH	6.5		%
	PA	5.6		%	VA	5.9		%
	VA	5.4		%	NC	5.1		%

(1) As provided by the Trustee.

Schedule of Securitized Loans Held for Investment Carried at Fair Value Greater Than 30 Days Delinquent

The following table summarizes the outstanding principal balance of the residential loan portfolio which are 30 days delinquent and greater as reported by the servicer at September 30, 2017 and December 31, 2016.

	30 Days Delinquent	60 Days Delinquent	90+ Days Delinquent	Bankruptcy	Foreclosure	REO	Total	Unpaid Principal/Notional
	(dollars in thousands)
September 30, 2017	$462,865	$157,872	$294,458	$230,435	$172,129	$30,306	$1,348,065	$13,327,252
% of Unpaid Principal/Notional	3.5%	1.2%	2.2%	1.7%	1.3%	0.2%	10.1%
December 31, 2016	$363,899	$140,495	$190,991	$207,364	$203,265	$40,709	$1,146,723	$8,868,783
% of Unpaid Principal/Notional	4.1%	1.6%	2.2%	2.3%	2.3%	0.5%	12.9%

XML

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2017

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value, Option, Quantitative Disclosures

The table below shows the unpaid principal, fair value and impact of change in fair value on each of the financial instruments carried with fair value option as of September 30, 2017 and 2016, respectively:

	September 30, 2017
	(dollars in thousands)
	Unpaid Principal/ Notional		Fair Value		Quarter to Date Gain/(Loss) on Change in Fair Value			Year to Date Gain/(Loss) on Change in Fair Value
Assets:
Non-agency RMBS
Subordinated	N/A		14,761		2,678			1,791
Senior, interest-only	4,948,265		212,662		1,784			(16,446		)
Subordinated, interest-only	256,286		11,588		1,048			475
Agency MBS
Residential Pass-through	$	586,030	$	614,758	$	(2,457	)	$	(2,457	)
Commercial Pass-through	407,943		410,013		(1,852		)	(1,852		)
Interest-only	3,176,110		114,810		(779		)	831
Loans held for investment, at fair value	13,327,252		13,538,052		57,114			271,824
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	9,622,994		9,683,062		(38,494		)	(95,120		)

	September 30, 2016
	(dollars in thousands)
	Unpaid Principal/ Notional		Fair Value		Quarter to Date Gain/(Loss) on Change in Fair Value			Year to Date Gain/(Loss) on Change in Fair Value
Assets:
Non-agency RMBS
Subordinated	N/A		20,671		8,257			7,551
Senior, interest-only	5,733,457		291,526		2,214			22,332
Subordinated, interest-only	269,868		13,498		1,289			3,288
Agency MBS
Residential Pass-through	$	—	$	—	$	—		$	—
Commercial Pass-through	—		—		—			—
Interest-only	3,474,731		157,088		(345		)	430
Loans held for investment, at fair value	9,030,908		8,909,037		68,508			113,646
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	7,334,475		7,191,462		(46,923		)	(67,029		)

Fair Value, Financial Assets and Liabilities Carried at Fair Value on a Recurring Basis

The Company’s financial assets and liabilities carried at fair value on a recurring basis, including the level in the fair value hierarchy, at September 30, 2017 and December 31, 2016 are presented below.

	September 30, 2017
	(dollars in thousands)
	Level 1		Level 2			Level 3			Counterparty and Cash Collateral, netting			Total
Assets:
Non-Agency RMBS, at fair value	$	—	$	—		$	2,950,348		$	—		$	2,950,348
Agency MBS, at fair value	—		4,354,872			—			—			4,354,872
Loans held for investment, at fair value	—		—			13,538,052			—			13,538,052
Derivatives	4,864		22,771			—			(5,110		)	22,525
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	—		—			(9,683,062		)	—			(9,683,062		)
Derivatives	—		(6,314		)	—			5,110			(1,204		)
Total	$	4,864	$	4,371,329		$	6,805,338		$	—		$	11,181,531

	December 31, 2016
	(dollars in thousands)
	Level 1		Level 2			Level 3			Counterparty and Cash Collateral, netting			Total
Assets:
Non-Agency RMBS, at fair value	$	—	$	—		3,330,063			$	—		$	3,330,063
Agency MBS, at fair value	—		4,167,754			—			—			4,167,754
Loans held for investment, at fair value	—		—			8,753,653			—			8,753,653
Derivatives	1,785		22,327			—			(14,435		)	9,677
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	—		—			(6,941,097		)	—			(6,941,097		)
Derivatives	—		(17,225		)	—			14,875			(2,350		)
Total	$	1,785	$	4,172,856		$	5,142,619		$	440		$	9,317,700

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

The table below provides a summary of the changes in the fair value of securities classified as Level 3 at September 30, 2017 and December 31, 2016.

Fair Value Reconciliation, Level 3
	For the Nine Months Ended, September 30, 2017
	(dollars in thousands)
	Non-Agency RMBS			Loans held for investment			Securitized Debt
Beginning balance Level 3 assets	$	3,330,063		$	8,753,653		$	(6,941,097	)
Transfers in to Level 3 assets	6,112			—			—
Transfers out of Level 3 assets	—			—			—
Purchases	71,116			5,835,799			(4,159,073		)
Principal payments	(459,854		)	(1,298,856		)	1,319,120
Sales and Settlements	(68,164		)	2,942			245,369
Accretion (amortization) of purchase discounts	92,201			(27,310		)	(4,247		)
Gains (losses) included in net income
Other than temporary credit impairment losses	(41,702		)	—			—
Realized gains (losses) on sales and settlements	12,031			—			(48,014		)
Net unrealized gains (losses) included in income	(14,179		)	271,824			(95,120		)
Gains (losses) included in other comprehensive income
Total unrealized gains (losses) for the period	22,724			—			—
Ending balance Level 3 assets	$	2,950,348		$	13,538,052		$	(9,683,062	)

Fair Value Reconciliation, Level 3
	For the Year Ended, December 31, 2016
	(dollars in thousands)
	Non-Agency RMBS			Loans held for investment			Securitized Debt
Beginning balance Level 3 assets	$	3,675,841		$	4,768,416		$	(3,720,496	)
Transfers in to Level 3 assets	—			—			—
Transfers out of Level 3 assets	—			—			—
Purchases	257,914			4,897,370			(4,797,255		)
Principal payments	(532,696		)	(1,022,414		)	1,059,854
Sales and Settlements	(149,938		)	5,007			608,816
Accretion (amortization) of purchase discounts	120,638			(41,363		)	(2,128		)
Gains (losses) included in net income
Other than temporary credit impairment losses	(57,986		)	—			—
Realized gains (losses) on sales and settlements	13,761			—			(122		)
Net unrealized gains (losses) included in income	3,173			146,637			(89,766		)
Gains (losses) included in other comprehensive income
Total unrealized gains (losses) for the period	(644		)	—			—
Ending balance Level 3 assets	$	3,330,063		$	8,753,653		$	(6,941,097	)

Fair Value Measurements, Significant Unobservable Inputs, Liabilities

A summary of the significant inputs used to estimate the fair value of securitized debt at fair value, collateralized by loans held for investment, as of September 30, 2017 and December 31, 2016 follows:

		September 30, 2017				December 31, 2016
		Significant Inputs				Significant Inputs
	Weighted Average Discount Rate	CPR Range	CDR Range	Loss Severity Range	Weighted Average Discount Rate	CPR Range	CDR Range	Loss Severity Range
Securitized debt at fair value, collateralized by loans held for investment	4.1%	1% - 22%	0% - 30%	35% - 70%	4.0%	1% - 35%	0% - 30%	35% - 65%

Fair Value, by Balance Sheet Grouping

The following table presents the carrying value and fair value, as described above, of the Company’s financial instruments not carried at fair value on a recurring basis at September 30, 2017 and December 31, 2016.

	September 30, 2017
	(dollars in thousands)
	Level in Fair Value Hierarchy	Carrying Amount	Fair Value
Repurchase agreements	2	6,709,821	6,727,850
Securitized debt, collateralized by Non-Agency RMBS	3	233,113	221,567

	December 31, 2016
	(dollars in thousands)
	Level in Fair Value Hierarchy	Carrying Amount	Fair Value
Repurchase agreements	2	5,600,903	5,619,385
Securitized debt, collateralized by Non-Agency RMBS	3	334,124	324,261

Non-agency MBS

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value Measurements, Significant Unobservable Inputs, Assets

A summary of the significant inputs used to estimate the fair value of Non-Agency RMBS held for investment at fair value as of September 30, 2017 and December 31, 2016 follows:

	September 30, 2017				December 31, 2016
	Significant Inputs				Significant Inputs
	Weighted Average Discount Rate	CPR	CDR	Loss Severity	Weighted Average Discount Rate	CPR	CDR	Loss Severity
		Range				Range
Non-Agency RMBS
Senior	4.6%	1% -45%	0% -60%	35% -95%	5.4%	1% -35%	0% -22%	35% -95%
Senior interest-only	11.8%	4% -28%	0% -64%	35% -95%	12.5%	3% -30%	0% -22%	35% -95%
Subordinated	5.9%	1% -20%	0% -21%	35% -77%	6.2%	1% -25%	0% -18%	0% -79%
Subordinated interest-only	10.9%	10% -18%	0% -11%	35% -59%	13.2%	6% -15%	0% -11%	35% -76%

Loans Held for Investment at Fair Value

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value Measurements, Significant Unobservable Inputs, Assets

A summary of the significant inputs used to estimate the fair value of Loans held for investment collateralized by seasoned subprime mortgages at fair value as of September 30, 2017 and December 31, 2016 follows:

	September 30, 2017	December 31, 2016
Factor:
Coupon
Base Rate	4.7%	5.2%
Actual	7.0%	7.1%
FICO
Base Rate	634	632
Actual	626	621
Loan-to-value (LTV)
Base Rate	89%	87%
Actual	88%	88%
Loan Characteristics:
Occupancy
Owner Occupied	94%	97%
Investor	2%	2%
Secondary	4%	1%
Property Type
Single family	86%	86%
Manufactured housing	5%	6%
Multi-family/mixed use/other	9%	8%

XML

Repurchase Agreements (Tables)

9 Months Ended

Sep. 30, 2017

Banking and Thrift [Abstract]

Schedule of Repurchase Agreements

The repurchase agreements outstanding, weighted average borrowing rates, weighted average remaining maturities, average daily balances and the fair value of collateral pledged as of September 30, 2017 and December 31, 2016 were:

	September 30, 2017			December 31, 2016
Repurchase agreements outstanding secured by:
Agency MBS (in thousands)	$	3,096,233		$	3,087,734
Non-agency MBS and Loans held for investment (in thousands)	3,613,588			2,513,169
Total:	$	6,709,821		$	5,600,903
Average balance of Repurchase agreements secured by:
Agency MBS (in thousands)	$	3,129,569		$	4,159,651
Non-agency MBS and Loans held for investment (in thousands)	2,983,319			2,322,683
Total:	$	6,112,888		$	6,482,334
Average borrowing rate of Repurchase agreements secured by:
Agency MBS	1.39		%	0.90		%
Non-agency MBS and Loans held for investment	3.25		%	3.05		%
Average remaining maturity of Repurchase agreements secured by:
Agency MBS	21 Days			32 Days
Non-agency MBS and Loans held for investment	73 Days			98 Days
Average original maturity of Repurchase agreements secured by:
Agency MBS	76 Days			112 Days
Non-agency MBS and Loans held for investment	109 Days			155 Days
MBS pledged as collateral at fair value on Repurchase agreements:
Agency MBS (in thousands)	$	3,332,640		$	3,334,245
Non-agency MBS and Loans held for investment (in thousands)	4,817,669			3,699,621
Total:	$	8,150,309		$	7,033,866

At September 30, 2017 and December 31, 2016, the repurchase agreements collateralized by MBS and Loans held for investment had the following remaining maturities.

	September 30, 2017		December 31, 2016
	(dollars in thousands)
Overnight	$	—	$	—
1 to 29 days	3,777,160		2,947,604
30 to 59 days	1,591,370		958,956
60 to 89 days	330,186		407,625
90 to 119 days	28,798		559,533
Greater than or equal to 120 days	982,307		727,185
Total	$	6,709,821	$	5,600,903

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Securitized Debt (Tables)

9 Months Ended

Sep. 30, 2017

Debt Instrument [Line Items]

Schedule of Callable Debt

The following table presents the par value of the callable debt by year at September 30, 2017. 

September 30, 2017
(dollars in thousands)
Year	Principal
2017	$	811,395
2018	1,002,614
2019	416,722
2020	4,232,520
2021	2,961,293
Total	$	9,424,544

Non-agency MBS

Debt Instrument [Line Items]

Schedule of Maturities of Long-term Debt

The following table presents the estimated principal repayment schedule of the securitized debt collateralized by Non-Agency RMBS at September 30, 2017 and December 31, 2016, based on expected cash flows of the residential mortgage loans or RMBS, as adjusted for projected losses on the underlying collateral of the debt. All of the securitized debt recorded in the Company’s Consolidated Statements of Financial Condition is non-recourse to the Company.

	September 30, 2017		December 31, 2016
	(dollars in thousands)
Within One Year	$	62,165	$	98,565
One to Three Years	50,055		82,563
Three to Five Years	21,013		23,854
Greater Than Five Years	5,913		31,973
Total	$	139,146	$	236,955

Loans held for investment

Debt Instrument [Line Items]

Schedule of Maturities of Long-term Debt

The following table presents the estimated principal repayment schedule of the securitized debt collateralized by loans held for investment at September 30, 2017 and December 31, 2016, based on expected cash flows of the residential mortgage loans or RMBS, as adjusted for projected losses on the underlying collateral of the debt. All of the securitized debt recorded in the Company’s Consolidated Statements of Financial Condition is non-recourse to the Company.

	September 30, 2017		December 31, 2016
	(dollars in thousands)
Within One Year	$	1,856,397	$	1,151,519
One to Three Years	2,907,977		1,841,808
Three to Five Years	2,163,866		1,423,706
Greater Than Five Years	2,630,039		2,477,123
Total	$	9,558,279	$	6,894,156

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Consolidated Securitization Vehicles and Other Variable Interest Entities (Tables)

9 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Consolidated Securitization Entities on Financial Condition

The table below reflects the assets and liabilities recorded in the Consolidated Statements of Financial Condition related to the consolidated VIEs as of September 30, 2017 and December 31, 2016.

	September 30, 2017		December 31, 2016
	(dollars in thousands)
Assets:
Non-Agency RMBS, at fair value	$	1,646,762	$	1,842,080
Loans held for investment, at fair value	13,011,319		8,753,653
Accrued interest receivable	76,327		57,153
Other assets	112,572		109,068
Liabilities:
Securitized debt, collateralized by Non-Agency RMBS	$	233,113	$	334,124
Securitized debt at fair value, collateralized by loans held for investment	9,683,062		6,941,097
Accrued interest payable	34,650		24,942
Other liabilities	3,612		2,742

The consolidation of these Trusts resulted in the addition of the following amounts, net of eliminations, at the time of acquisition.

	Consolidated Trusts
	(dollars in thousands)
Assets:
Loans held for investment, at fair value	$	5,353,955
Other Assets	36,795
Liabilities:
Securitized debt at fair value (1)	$	4,171,458

(1) After the elimination of intercompany balances.

Schedule of Consolidated Variable Interest Entities Effects on Operating Results

Income, OTTI and expense amounts related to consolidated VIEs recorded in the Consolidated Statements of Operations is presented in the tables below.

	For the Quarters Ended
	September 30, 2017			September 30, 2016
	(dollars in thousands)
Interest income, Assets of consolidated VIEs	$	241,195		$	195,488
Interest expense, Non-recourse liabilities of VIEs	101,856			70,715
Net interest income	$	139,339		$	124,773
Total other-than-temporary impairment losses	$	(668	)	$	(21	)
Portion of loss recognized in other comprehensive income (loss)	(10,108		)	(4,599		)
Net other-than-temporary credit impairment losses	$	(10,776	)	$	(4,620	)
Servicing fees	$	10,492		$	9,788

	For the Nine Months Ended
	September 30, 2017			September 30, 2016
	(dollars in thousands)
Interest income, Assets of consolidated VIEs	$	668,621		$	488,353
Interest expense, Non-recourse liabilities of VIEs	290,264			168,738
Net interest income	$	378,357		$	319,615
Total other-than-temporary impairment losses	$	(1,777	)	$	(866	)
Portion of loss recognized in other comprehensive income (loss)	(35,720		)	(31,925		)
Net other-than-temporary credit impairment losses	$	(37,497	)	$	(32,791	)
Servicing fees	$	30,970		$	23,139

XML

Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position

The table below summarizes the location and fair value of the derivatives reported in the Consolidated Statements of Financial Condition after counterparty netting and posting of cash collateral as of September 30, 2017 and December 31, 2016.

			September 30, 2017
			Derivative Assets			Derivative Liabilities
Derivative Instruments	Notional Amount Outstanding		Location on Consolidated Statements of Financial Condition	Net Estimated Fair Value/Carrying Value		Location on Consolidated Statements of Financial Condition	Net Estimated Fair Value/Carrying Value
			(dollars in thousands)
Interest Rate Swaps	$	3,373,400	Derivatives, at fair value, net	$	15,254	Derivatives, at fair value, net	$	—
Swaptions	482,000		Derivatives, at fair value, net	2,407		Derivatives, at fair value, net	(1,204		)
Treasury Futures	619,700		Derivatives, at fair value, net	4,864		Derivatives, at fair value, net	—
Total	$	4,475,100		$	22,525		$	(1,204	)

			December 31, 2016
			Derivative Assets			Derivative Liabilities
Derivative Instruments	Notional Amount Outstanding		Location on Consolidated Statements of Financial Condition	Net Estimated Fair Value/Carrying Value		Location on Consolidated Statements of Financial Condition	Net Estimated Fair Value/Carrying Value
			(dollars in thousands)
Interest Rate Swaps	$	1,396,900	Derivatives, at fair value, net	$	—	Derivatives, at fair value, net	$	—
Swaptions	624,000		Derivatives, at fair value, net	7,892		Derivatives, at fair value, net	(2,350		)
Treasury Futures	619,700		Derivatives, at fair value, net	1,785		Derivatives, at fair value, net	—
Total	$	2,640,600		$	9,677		$	(2,350	)

Schedule of Derivative Instruments Effects on Operating Results

The effect of the Company’s derivatives on the Consolidated Statements of Operations is presented below.

		Net gains (losses) on derivatives For the Quarters Ended
Derivative Instruments	Location on Consolidated Statements of Operations and Comprehensive Income	September 30, 2017			September 30, 2016
		(dollars in thousands)
Interest Rate Swaps	Net unrealized gains (losses) on derivatives	$	5,001		$	13,395
Interest Rate Swaps	Net realized gains (losses) on derivatives	(3,491		)	(4,595		)
Treasury Futures	Net unrealized gains (losses) on derivatives	3,467			12,149
Treasury Futures	Net realized gains (losses) on derivatives	(3,267		)	(7,823		)
Swaptions	Net unrealized gains (losses) on derivatives	736			2,084
Swaptions	Net realized gains (losses) on derivatives	(1,083		)	(1,850		)
Other Derivative Assets	Net unrealized gains (losses) on derivatives	—			—
Other Derivative Assets	Net realized gains (losses) on derivatives	—			—
Total		$	1,363		$	13,360

		Net gains (losses) on derivatives For the Nine Months Ended
Derivative Instruments	Location on Consolidated Statements of Operations and Comprehensive Income	September 30, 2017			September 30, 2016
		(dollars in thousands)
Interest Rate Swaps	Net unrealized gains (losses) on derivatives	$	15,694		$	(36,840	)
Interest Rate Swaps	Net realized gains (losses) on derivatives (1)	(27,222		)	(84,571		)
Treasury Futures	Net unrealized gains (losses) on derivatives	3,079			(4,259		)
Treasury Futures	Net realized gains (losses) on derivatives	(12,268		)	(28,797		)
Swaptions	Net unrealized gains (losses) on derivatives	1,129			(10,283		)
Swaptions	Net realized gains (losses) on derivatives	(5,333		)	(5,615		)
Other Derivative Assets	Net unrealized gains (losses) on derivatives	—			—
Other Derivative Assets	Net realized gains (losses) on derivatives	—			(567		)
Total		$	(24,921	)	$	(170,932	)

(1) Includes loss on termination of interest rate swap of $16 million and $61 million for the nine months ended September 30, 2017and 2016, respectively.

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Capital Stock (Tables)

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Schedule of Earnings Per Share

Earnings per share for the quarters and nine months ended September 30, 2017, and 2016, respectively, are computed as follows:

	For the Quarters Ended
	September 30, 2017		September 30, 2016
	(dollars in thousands)
Numerator:
Net income available to common shareholders	$	129,832	$	172,817
Effect of dilutive securities:	—		—
Dilutive net income available to common shareholders	$	129,832	$	172,817
Denominator:
Weighted average basic shares	187,779,794		187,729,765
Effect of dilutive securities	412,317		190,027
Weighted average dilutive shares	188,192,111		187,919,792
Net income per average share attributable to common stockholders - Basic	$	0.69	$	0.92
Net income per average share attributable to common stockholders - Diluted	$	0.69	$	0.92

	For the Nine Months Ended
	September 30, 2017		September 30, 2016
	(dollars in thousands)
Numerator:
Net income available to common shareholders	$	392,977	$	330,042
Effect of dilutive securities:	—		—
Dilutive net income available to common shareholders	$	392,977	$	330,042
Denominator:
Weighted average basic shares	187,773,715		187,727,667
Effect of dilutive securities	403,042		190,027
Weighted average dilutive shares	188,176,757		187,917,694
Net income per average share attributable to common stockholders - Basic	$	2.09	$	1.76
Net income per average share attributable to common stockholders - Diluted	$	2.09	$	1.76

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Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Schedule of Components of AOCI

The following table presents the changes in the components of Accumulated Other Comprehensive Income (“AOCI”) for the nine months ended September 30, 2017 and 2016:

	September 30, 2017
	(dollars in thousands)
	Unrealized gains (losses) on available-for-sale securities, net		Total Accumulated OCI Balance
Balance as of December 31, 2016	$	718,106	$	718,106
OCI before reclassifications	59,114		59,114
Amounts reclassified from AOCI	35,898		35,898
Net current period OCI	95,012		95,012
Balance as of September 30, 2017	$	813,118	$	813,118

	September 30, 2016
	(dollars in thousands)
	Unrealized gains (losses) on available-for-sale securities, net		Total Accumulated OCI Balance
Balance as of December 31, 2015	$	773,791	$	773,791
OCI before reclassifications	94,059		94,059
Amounts reclassified from AOCI	29,853		29,853
Net current period OCI	123,912		123,912
Balance as of September 30, 2016	$	897,703	$	897,703

Schedule of Reclassifications from AOCI

The following table presents the details of the reclassifications from AOCI for the nine months ended September 30, 2017 and 2016:

	September 30, 2017			September 30, 2016
Details about Accumulated OCI Components	Amounts Reclassified from Accumulated OCI			Amounts Reclassified from Accumulated OCI			Affected Line on the Consolidated Statements Of Operations
Unrealized gains and losses on available-for-sale securities
	$	7,778		$	13,354		Net realized gains (losses) on sales of investments
	(43,676		)	(43,207		)	Net other-than-temporary credit impairment losses
	$	(35,898	)	$	(29,853	)	Income before income taxes
	—			—			Income taxes
	$	(35,898	)	$	(29,853	)	Net of tax

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Credit Risk and Interest Rate Risk (Tables)

9 Months Ended

Sep. 30, 2017

Offsetting [Abstract]

Schedule of Assets and Liabilities Subject to Netting Arrangements

The following table presents information about our liabilities that are subject to such arrangements and can potentially be offset on our consolidated statements of financial condition as of September 30, 2017 and December 31, 2016.

	September 30, 2017
	(dollars in thousands)
	Gross Amounts of Recognized  Assets (Liabilities)			Gross Amounts Offset in the Consolidated Statements of Financial Position			Net Amounts Offset in the Consolidated Statements of Financial Position			Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position
										Financial Instruments		Cash Collateral (Received) Pledged (1)		Net Amount
Repurchase Agreements	$	(6,709,821	)	$	—		$	(6,709,821	)	$	8,150,308	$	1,986	$	1,442,473
Interest Rate Swaps - Gross Assets	20,364			(5,110		)	15,254			—		46,339		61,593
Interest Rate Swaps - Gross Liabilities	(5,110		)	5,110			—			—		—		—
Treasury Futures - Gross Assets	4,864			—			4,864			—		997		5,861
Treasury Futures - Gross Liabilities	—			—			—			—		—		—
Swaptions - Gross Assets	2,407			—			2,407			—		—		2,407
Swaptions - Gross Liabilities	(1,204		)	—			(1,204		)	1,279		—		75
Total Liabilities	$	(6,688,500	)	$	—		$	(6,688,500	)	$	8,151,587	$	49,322	$	1,512,409

(1) Included in other assets

	December 31, 2016
	(dollars in thousands)
	Gross Amounts of Recognized  Assets (Liabilities)			Gross Amounts Offset in the Consolidated Statements of Financial Position			Net Amounts Offset in the Consolidated Statements of Financial Position			Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position
										Financial Instruments		Cash Collateral (Received) Pledged (1)		Net Amount
Repurchase Agreements	$	(5,600,903	)	$	—		$	(5,600,903	)	$	7,033,866	$	2,545	$	1,435,508
Interest Rate Swaps - Gross Assets	14,435			(14,435		)	—			—		—		—
Interest Rate Swaps - Gross Liabilities	(14,875		)	14,875			—			—		39,627		39,627
Treasury Futures - Gross Assets	1,785			—			1,785			—		3,320		5,105
Treasury Futures - Gross Liabilities	—			—			—			—		—		—
Swaptions - Gross Assets	7,892			—			7,892			—		—		7,892
Swaptions - Gross Liabilities	(2,350		)	—			(2,350		)	10,341		—		7,991
Total Liabilities	$	(5,594,016	)	$	440		$	(5,593,576	)	$	7,044,207	$	45,492	$	1,496,123

(1) Included in other assets

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Organization - Narrative (Detail)	9 Months Ended
	Sep. 30, 2017 subsidiary
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of wholly owned direct subsidiaries	8

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Summary of the Significant Accounting Policies (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Penalties and interest accrued	$ 0	$ 0

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Mortgage-Backed Securities - Summary (Detail) - Residential Mortgage-Backed Securities - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Investment Holdings [Line Items]
Principal or Notional Value	$ 15,825,362	$ 17,062,076
Total Premium	586,574	662,686
Total Discount	(1,475,702)	(1,627,480)
Amortized Cost	6,555,573	6,825,525
Fair Value	7,305,220	7,497,817
Gross Unrealized Gains	869,862	841,967
Gross Unrealized Losses	(120,215)	(169,675)
Net Unrealized Gain/(Loss)	749,647	672,292
Non-Agency RMBS - Senior
Investment Holdings [Line Items]
Principal or Notional Value	2,821,535	3,190,947
Total Premium	224	231
Total Discount	(1,282,801)	(1,412,058)
Amortized Cost	1,538,958	1,779,120
Fair Value	2,304,611	2,511,003
Gross Unrealized Gains	765,653	732,133
Gross Unrealized Losses	0	(250)
Net Unrealized Gain/(Loss)	765,653	731,883
Non-Agency RMBS - Senior interest-only
Investment Holdings [Line Items]
Principal or Notional Value		5,648,339
Total Premium	267,964	292,396
Total Discount	0	0
Amortized Cost	267,964	292,396
Fair Value	212,662	253,539
Gross Unrealized Gains	13,620	18,674
Gross Unrealized Losses	(68,922)	(57,531)
Net Unrealized Gain/(Loss)	(55,302)	(38,857)
Non-Agency RMBS - Subordinated
Investment Holdings [Line Items]
Principal or Notional Value	531,526	673,259
Total Premium	10,764	16,352
Total Discount	(188,169)	(212,734)
Amortized Cost	354,121	476,877
Fair Value	421,487	553,498
Gross Unrealized Gains	67,430	77,857
Gross Unrealized Losses	(64)	(1,236)
Net Unrealized Gain/(Loss)	67,366	76,621
Non-Agency RMBS - Subordinated interest-only
Investment Holdings [Line Items]
Principal or Notional Value		266,927
Total Premium	12,968	13,878
Total Discount	0	0
Amortized Cost	12,968	13,878
Fair Value	11,588	12,024
Gross Unrealized Gains	860	0
Gross Unrealized Losses	(2,240)	(1,854)
Net Unrealized Gain/(Loss)	(1,380)	(1,854)
Agency MBS - Residential
Investment Holdings [Line Items]
Principal or Notional Value	2,316,838	2,594,570
Total Premium	128,388	149,872
Total Discount	0	0
Amortized Cost	2,445,226	2,744,442
Fair Value	2,428,112	2,705,978
Gross Unrealized Gains	7,606	11,235
Gross Unrealized Losses	(24,720)	(49,699)
Net Unrealized Gain/(Loss)	(17,114)	(38,464)
Agency MBS - Commercial
Investment Holdings [Line Items]
Principal or Notional Value	1,774,802	1,331,543
Total Premium	44,913	37,782
Total Discount	(4,732)	(2,688)
Amortized Cost	1,814,983	1,366,637
Fair Value	1,811,950	1,316,975
Gross Unrealized Gains	13,467	175
Gross Unrealized Losses	(16,500)	(49,837)
Net Unrealized Gain/(Loss)	(3,033)	(49,662)
Agency MBS - Interest-only
Investment Holdings [Line Items]
Principal or Notional Value	3,176,110	3,356,491
Total Premium	121,353	152,175
Total Discount	0	0
Amortized Cost	121,353	152,175
Fair Value	114,810	144,800
Gross Unrealized Gains	1,226	1,893
Gross Unrealized Losses	(7,769)	(9,268)
Net Unrealized Gain/(Loss)	$ (6,543)	$ (7,375)

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Mortgage-Backed Securities - Accretable Yield (Detail) - Available-for-sale Securities - Non-Agency RMBS Having Deteriorated Credit When Acquired - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 1,383,188	$ 1,714,592	$ 1,550,110	$ 1,742,744
Purchases	8,196	18,316	18,380	60,915
Yield income earned	(66,042)	(69,850)	(202,618)	(141,256)
Reclassification (to) from non-accretable difference	53,884	(29,490)	15,777	(2,031)
Sales and deconsolidation	(17,755)	(12,907)	(20,178)	(39,711)
Balance at end of period	$ 1,361,471	$ 1,620,661	$ 1,361,471	$ 1,620,661

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Mortgage-Backed Securities - Non-Agency Securities Having Deteriorated Credit When Acquired (Detail) - Non-Agency RMBS Having Deteriorated Credit When Acquired - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Outstanding principal balance:
Beginning of period	$ 2,910,151	$ 3,138,265	$ 3,550,698
End of period	2,772,746	2,910,151	3,138,265
Amortized cost:
Beginning of period	1,546,656	1,695,079	1,958,726
End of period	$ 1,449,531	$ 1,546,656	$ 1,695,079

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Mortgage-Backed Securities - Unrealized Loss Positions (Detail) - Residential Mortgage-Backed Securities $ in Thousands	Sep. 30, 2017 USD ($) security	Dec. 31, 2016 USD ($) security
Estimated Fair Value
Estimated Fair Value Unrealized Loss Position for Less than 12 Months	$ 2,925,628	$ 3,815,885
Estimated Fair Value Unrealized Loss Position for 12 Months or More	399,844	252,257
Estimated Fair Value Total	3,325,472	4,068,142
Unrealized Losses
Unrealized Losses Unrealized Loss Position for Less than 12 Months	(49,363)	(110,548)
Unrealized Losses Unrealized Loss Position for 12 Months or More	(70,852)	(59,127)
Unrealized Losses Total	$ (120,215)	$ (169,675)
Number of Securities
Number of Securities Unrealized Loss Position for Less than 12 Months | security	411	846
Number of Securities Unrealized Loss Position for 12 Months or More | security	129	156
Number of Securities in continuous loss position | security	540	1,002
Non-Agency RMBS - Senior
Estimated Fair Value
Estimated Fair Value Unrealized Loss Position for Less than 12 Months	$ 0	$ 12,384
Estimated Fair Value Unrealized Loss Position for 12 Months or More	0	0
Estimated Fair Value Total	0	12,384
Unrealized Losses
Unrealized Losses Unrealized Loss Position for Less than 12 Months	0	(250)
Unrealized Losses Unrealized Loss Position for 12 Months or More	0	0
Unrealized Losses Total	$ 0	$ (250)
Number of Securities
Number of Securities Unrealized Loss Position for Less than 12 Months | security	0	3
Number of Securities Unrealized Loss Position for 12 Months or More | security	0	0
Number of Securities in continuous loss position | security	0	3
Non-Agency RMBS - Senior interest-only
Estimated Fair Value
Estimated Fair Value Unrealized Loss Position for Less than 12 Months	$ 82,130	$ 96,399
Estimated Fair Value Unrealized Loss Position for 12 Months or More	73,232	78,516
Estimated Fair Value Total	155,362	174,915
Unrealized Losses
Unrealized Losses Unrealized Loss Position for Less than 12 Months	(15,487)	(13,600)
Unrealized Losses Unrealized Loss Position for 12 Months or More	(53,435)	(43,931)
Unrealized Losses Total	$ (68,922)	$ (57,531)
Number of Securities
Number of Securities Unrealized Loss Position for Less than 12 Months | security	54	62
Number of Securities Unrealized Loss Position for 12 Months or More | security	93	86
Number of Securities in continuous loss position | security	147	148
Non-Agency RMBS - Subordinated
Estimated Fair Value
Estimated Fair Value Unrealized Loss Position for Less than 12 Months	$ 5,353	$ 56,015
Estimated Fair Value Unrealized Loss Position for 12 Months or More	0	2,826
Estimated Fair Value Total	5,353	58,841
Unrealized Losses
Unrealized Losses Unrealized Loss Position for Less than 12 Months	(64)	(412)
Unrealized Losses Unrealized Loss Position for 12 Months or More	0	(824)
Unrealized Losses Total	$ (64)	$ (1,236)
Number of Securities
Number of Securities Unrealized Loss Position for Less than 12 Months | security	7	7
Number of Securities Unrealized Loss Position for 12 Months or More | security	1	4
Number of Securities in continuous loss position | security	8	11
Non-Agency RMBS - Subordinated interest-only
Estimated Fair Value
Estimated Fair Value Unrealized Loss Position for Less than 12 Months	$ 574	$ 748
Estimated Fair Value Unrealized Loss Position for 12 Months or More	4,220	11,276
Estimated Fair Value Total	4,794	12,024
Unrealized Losses
Unrealized Losses Unrealized Loss Position for Less than 12 Months	(331)	(230)
Unrealized Losses Unrealized Loss Position for 12 Months or More	(1,909)	(1,624)
Unrealized Losses Total	$ (2,240)	$ (1,854)
Number of Securities
Number of Securities Unrealized Loss Position for Less than 12 Months | security	2	2
Number of Securities Unrealized Loss Position for 12 Months or More | security	2	3
Number of Securities in continuous loss position | security	4	5
Agency MBS - Residential
Estimated Fair Value
Estimated Fair Value Unrealized Loss Position for Less than 12 Months	$ 1,932,140	$ 2,338,910
Estimated Fair Value Unrealized Loss Position for 12 Months or More	234,050	54,943
Estimated Fair Value Total	2,166,190	2,393,853
Unrealized Losses
Unrealized Losses Unrealized Loss Position for Less than 12 Months	(17,187)	(48,084)
Unrealized Losses Unrealized Loss Position for 12 Months or More	(7,533)	(1,615)
Unrealized Losses Total	$ (24,720)	$ (49,699)
Number of Securities
Number of Securities Unrealized Loss Position for Less than 12 Months | security	95	106
Number of Securities Unrealized Loss Position for 12 Months or More | security	11	1
Number of Securities in continuous loss position | security	106	107
Agency MBS - Commercial
Estimated Fair Value
Estimated Fair Value Unrealized Loss Position for Less than 12 Months	$ 876,181	$ 1,247,923
Estimated Fair Value Unrealized Loss Position for 12 Months or More	30,311	51,733
Estimated Fair Value Total	906,492	1,299,656
Unrealized Losses
Unrealized Losses Unrealized Loss Position for Less than 12 Months	(15,291)	(45,802)
Unrealized Losses Unrealized Loss Position for 12 Months or More	(1,209)	(4,035)
Unrealized Losses Total	$ (16,500)	$ (49,837)
Number of Securities
Number of Securities Unrealized Loss Position for Less than 12 Months | security	241	646
Number of Securities Unrealized Loss Position for 12 Months or More | security	1	46
Number of Securities in continuous loss position | security	242	692
Agency MBS - Interest-only
Estimated Fair Value
Estimated Fair Value Unrealized Loss Position for Less than 12 Months	$ 29,250	$ 63,506
Estimated Fair Value Unrealized Loss Position for 12 Months or More	58,031	52,963
Estimated Fair Value Total	87,281	116,469
Unrealized Losses
Unrealized Losses Unrealized Loss Position for Less than 12 Months	(1,003)	(2,170)
Unrealized Losses Unrealized Loss Position for 12 Months or More	(6,766)	(7,098)
Unrealized Losses Total	$ (7,769)	$ (9,268)
Number of Securities
Number of Securities Unrealized Loss Position for Less than 12 Months | security	12	20
Number of Securities Unrealized Loss Position for 12 Months or More | security	21	16
Number of Securities in continuous loss position | security	33	36

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Mortgage-Backed Securities - Investment Holdings - Narrative (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Interest-only
Investment Holdings [Line Items]
Interest-only RMBS, net unrealized gain (loss)	$ (63,000)		$ (63,000)		$ (48,000)
Interest-only RMBS, amortized cost	402,000		402,000		458,000
Interest-only RMBS, fair value	339,000		339,000		410,000
Residential Mortgage-Backed Securities
Investment Holdings [Line Items]
Gross unrealized loss	120,215		120,215		169,675
Interest-only RMBS, net unrealized gain (loss)	749,647		749,647		672,292
Interest-only RMBS, amortized cost	6,555,573		6,555,573		6,825,525
Agency RMBS - Pass-through
Investment Holdings [Line Items]
Gross unrealized loss	37,000		37,000		100,000
Non-agency MBS
Investment Holdings [Line Items]
Gross unrealized loss	$ 45		$ 45		$ 485
Non-Agency RMBS Deemed To Be Equivalent To Alt-A Quality
Investment Holdings [Line Items]
Percentage in Alt-A collateral	69.00%		69.00%		68.00%
Non Agency Residential MBS Deemed To Be Equivalent To Prime Quality
Investment Holdings [Line Items]
Percentage in prime collateral	11.00%		11.00%		14.00%
Re-REMIC Security
Investment Holdings [Line Items]
Fair value of securities exchanged	$ 36,000	$ 30,000	$ 63,000	$ 47,000
Gain (loss) on sale of investments	$ 4,000	$ 2,000	$ 9,000	$ 1,000
Minimum | Alt-A
Investment Holdings [Line Items]
FICO Score			680
Maximum | Alt-A
Investment Holdings [Line Items]
FICO Score			720
Alt-A securities underlying collateral of full documented loans			30.00%

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Mortgage-Backed Securities - Aggregate Other Than Temporary Impairments (Detail) - Residential Mortgage-Backed Securities - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Total other-than-temporary impairment losses	$ (784)	$ (993)	$ (4,245)	$ (8,555)
Portion of loss recognized in other comprehensive income (loss)	(10,684)	(10,581)	(39,431)	(34,652)
Net other-than-temporary credit impairment losses	$ (11,468)	$ (11,574)	$ (43,676)	$ (43,207)

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Mortgage-Backed Securities - Non-Agency Securities Credit Losses (Detail) - Non-agency MBS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Cumulative credit loss beginning balance	$ 571,639	$ 546,187	$ 556,485	$ 529,112
Additions:
Other-than-temporary impairments not previously recognized	0	6,184	12,399	17,137
Reductions for securities sold or deconsolidated during the period	(4,965)	(2,630)	(12,405)	(6,890)
Increases related to other-than-temporary impairments on securities with previously recognized other-than-temporary impairments	11,468	5,390	29,302	26,069
Reductions for increases in cash flows expected to be collected over the remaining life of the securities	(3,241)	(1,494)	(10,880)	(11,791)
Cumulative credit impairment loss ending balance	$ 574,901	$ 553,637	$ 574,901	$ 553,637

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Mortgage-Backed Securities - OTTI - Significant Inputs and Assumptions (Detail) - Non-agency MBS	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Weighted Average
Investment Holdings [Line Items]
Loss Severity	67.00%	59.00%
60 days delinquent	21.00%	21.00%
Credit Enhancement	15.00%	29.00%
3 Month CPR	13.00%	5.00%
12 Month CPR	13.00%	4.00%
Minimum
Investment Holdings [Line Items]
Loss Severity	28.00%	25.00%
60 days delinquent	11.00%	0.00%
Credit Enhancement	0.00%	0.00%
3 Month CPR	2.00%	0.00%
12 Month CPR	4.00%	0.00%
Maximum
Investment Holdings [Line Items]
Loss Severity	89.00%	85.00%
60 days delinquent	27.00%	40.00%
Credit Enhancement	50.00%	100.00%
3 Month CPR	24.00%	19.00%
12 Month CPR	19.00%	21.00%

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Mortgage-Backed Securities - Gross Unrealized Gains (Losses) (Detail) - Residential Mortgage-Backed Securities - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Investment Holdings [Line Items]
Gross Unrealized Gain Included in Accumulated Other Comprehensive Income	$ 849,946	$ 818,127
Gross Unrealized Gain Included in Cumulative Earnings	19,916	23,840
Total Gross Unrealized Gain	869,862	841,967
Gross Unrealized Loss Included in Accumulated Other Comprehensive Income	(36,828)	(100,021)
Gross Unrealized Loss Included in Cumulative Earnings	(83,387)	(69,654)
Total Gross Unrealized Loss	(120,215)	(169,675)
Non-Agency RMBS - Senior
Investment Holdings [Line Items]
Gross Unrealized Gain Included in Accumulated Other Comprehensive Income	765,653	732,133
Gross Unrealized Gain Included in Cumulative Earnings	0	0
Total Gross Unrealized Gain	765,653	732,133
Gross Unrealized Loss Included in Accumulated Other Comprehensive Income	0	(250)
Gross Unrealized Loss Included in Cumulative Earnings	0	0
Total Gross Unrealized Loss	0	(250)
Non-Agency RMBS - Senior interest-only
Investment Holdings [Line Items]
Gross Unrealized Gain Included in Accumulated Other Comprehensive Income	0	0
Gross Unrealized Gain Included in Cumulative Earnings	13,620	18,674
Total Gross Unrealized Gain	13,620	18,674
Gross Unrealized Loss Included in Accumulated Other Comprehensive Income	0	0
Gross Unrealized Loss Included in Cumulative Earnings	(68,922)	(57,531)
Total Gross Unrealized Loss	(68,922)	(57,531)
Non-Agency RMBS - Subordinated
Investment Holdings [Line Items]
Gross Unrealized Gain Included in Accumulated Other Comprehensive Income	63,348	74,584
Gross Unrealized Gain Included in Cumulative Earnings	4,082	3,273
Total Gross Unrealized Gain	67,430	77,857
Gross Unrealized Loss Included in Accumulated Other Comprehensive Income	(45)	(235)
Gross Unrealized Loss Included in Cumulative Earnings	(19)	(1,001)
Total Gross Unrealized Loss	(64)	(1,236)
Non-Agency RMBS - Subordinated interest-only
Investment Holdings [Line Items]
Gross Unrealized Gain Included in Accumulated Other Comprehensive Income	0	0
Gross Unrealized Gain Included in Cumulative Earnings	860	0
Total Gross Unrealized Gain	860	0
Gross Unrealized Loss Included in Accumulated Other Comprehensive Income	0	0
Gross Unrealized Loss Included in Cumulative Earnings	(2,240)	(1,854)
Total Gross Unrealized Loss	(2,240)	(1,854)
Agency MBS - Residential
Investment Holdings [Line Items]
Gross Unrealized Gain Included in Accumulated Other Comprehensive Income	7,606	11,235
Gross Unrealized Gain Included in Cumulative Earnings	0	0
Total Gross Unrealized Gain	7,606	11,235
Gross Unrealized Loss Included in Accumulated Other Comprehensive Income	(22,263)	(49,699)
Gross Unrealized Loss Included in Cumulative Earnings	(2,457)	0
Total Gross Unrealized Loss	(24,720)	(49,699)
Agency MBS - Commercial
Investment Holdings [Line Items]
Gross Unrealized Gain Included in Accumulated Other Comprehensive Income	13,339	175
Gross Unrealized Gain Included in Cumulative Earnings	128	0
Total Gross Unrealized Gain	13,467	175
Gross Unrealized Loss Included in Accumulated Other Comprehensive Income	(14,520)	(49,837)
Gross Unrealized Loss Included in Cumulative Earnings	(1,980)	0
Total Gross Unrealized Loss	(16,500)	(49,837)
Agency MBS - Interest-only
Investment Holdings [Line Items]
Gross Unrealized Gain Included in Accumulated Other Comprehensive Income	0	0
Gross Unrealized Gain Included in Cumulative Earnings	1,226	1,893
Total Gross Unrealized Gain	1,226	1,893
Gross Unrealized Loss Included in Accumulated Other Comprehensive Income	0	0
Gross Unrealized Loss Included in Cumulative Earnings	(7,769)	(9,268)
Total Gross Unrealized Loss	$ (7,769)	$ (9,268)

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Mortgage-Backed Securities - Collateral Characteristics (Detail) - Residential Mortgage-Backed Securities $ in Thousands	Sep. 30, 2017 USD ($) $ / security	Dec. 31, 2016 USD ($) $ / security
Investment Holdings [Line Items]
Principal or Notional Value at Period-End | $	$ 15,825,362	$ 17,062,076
Non-Agency RMBS - Senior
Investment Holdings [Line Items]
Principal or Notional Value at Period-End | $	$ 2,821,535	$ 3,190,947
Weighted Average Amortized Cost Basis	54.54	55.76
Weighted Average Fair Value	81.68	78.69
Weighted Average Coupon	4.40%	4.30%
Weighted Average Yield at Period-End	16.70%	15.50%
Non-Agency RMBS - Senior interest-only
Investment Holdings [Line Items]
Principal or Notional Value at Period-End | $		$ 5,648,339
Weighted Average Amortized Cost Basis	5.42	5.18
Weighted Average Fair Value	4.30	4.49
Weighted Average Coupon	1.40%	1.50%
Weighted Average Yield at Period-End	7.80%	11.70%
Non-Agency RMBS - Subordinated
Investment Holdings [Line Items]
Principal or Notional Value at Period-End | $	$ 531,526	$ 673,259
Weighted Average Amortized Cost Basis	66.62	70.83
Weighted Average Fair Value	79.30	82.21
Weighted Average Coupon	4.10%	3.80%
Weighted Average Yield at Period-End	9.20%	9.20%
Non-Agency RMBS - Subordinated interest-only
Investment Holdings [Line Items]
Principal or Notional Value at Period-End | $		$ 266,927
Weighted Average Amortized Cost Basis	5.06	5.20
Weighted Average Fair Value	4.52	4.50
Weighted Average Coupon	1.00%	1.10%
Weighted Average Yield at Period-End	8.40%	13.50%
Agency MBS - Residential
Investment Holdings [Line Items]
Principal or Notional Value at Period-End | $	$ 2,316,838	$ 2,594,570
Weighted Average Amortized Cost Basis	105.54	105.78
Weighted Average Fair Value	104.80	104.29
Weighted Average Coupon	3.80%	3.90%
Weighted Average Yield at Period-End	2.90%	3.00%
Agency MBS - Commercial
Investment Holdings [Line Items]
Principal or Notional Value at Period-End | $	$ 1,774,802	$ 1,331,543
Weighted Average Amortized Cost Basis	102.26	102.64
Weighted Average Fair Value	102.09	98.91
Weighted Average Coupon	3.60%	3.60%
Weighted Average Yield at Period-End	3.20%	2.90%
Agency MBS - Interest-only
Investment Holdings [Line Items]
Principal or Notional Value at Period-End | $	$ 3,176,110	$ 3,356,491
Weighted Average Amortized Cost Basis	3.82	4.53
Weighted Average Fair Value	3.61	4.31
Weighted Average Coupon	0.70%	0.80%
Weighted Average Yield at Period-End	3.50%	3.50%

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Mortgage-Backed Securities - Credit Ratings (Detail) - Non-agency MBS	Sep. 30, 2017	Dec. 31, 2016
Credit Derivatives [Line Items]
Percentage of RMBS portfolio at fair value, by credit rating	100.00%	100.00%
AAA
Credit Derivatives [Line Items]
Percentage of RMBS portfolio at fair value, by credit rating	0.30%	0.30%
AA
Credit Derivatives [Line Items]
Percentage of RMBS portfolio at fair value, by credit rating	0.30%	0.30%
A
Credit Derivatives [Line Items]
Percentage of RMBS portfolio at fair value, by credit rating	0.60%	0.70%
BBB
Credit Derivatives [Line Items]
Percentage of RMBS portfolio at fair value, by credit rating	0.40%	0.70%
BB
Credit Derivatives [Line Items]
Percentage of RMBS portfolio at fair value, by credit rating	2.90%	3.00%
B
Credit Derivatives [Line Items]
Percentage of RMBS portfolio at fair value, by credit rating	2.10%	3.90%
Below B
Credit Derivatives [Line Items]
Percentage of RMBS portfolio at fair value, by credit rating	62.40%	67.20%
Not Rated
Credit Derivatives [Line Items]
Percentage of RMBS portfolio at fair value, by credit rating	31.00%	23.90%

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Mortgage-Backed Securities - Maturities (Detail) - Residential Mortgage-Backed Securities - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair value
Less than one year, at fair value	$ 5,724	$ 26,029
Greater than one year and less than five years, at fair value	1,058,197	1,194,654
Greater than five years and less than ten years, at fair value	3,588,608	3,990,091
Greater than ten years, at fair value	2,652,691	2,287,043
Total maturities, at fair value	7,305,220	7,497,817
Amortized cost
Less than one year, at amortized cost	6,758	23,415
Greater than one year and less than five years, at amortized cost	863,781	1,094,684
Greater than five years and less than ten years, at amortized cost	3,278,454	3,605,434
Greater than ten years, at amortized cost	2,406,580	2,101,992
Amortized Cost	6,555,573	6,825,525
Non-Agency RMBS - Senior
Fair value
Less than one year, at fair value	5,611	25,612
Greater than one year and less than five years, at fair value	757,644	508,979
Greater than five years and less than ten years, at fair value	881,904	1,267,000
Greater than ten years, at fair value	659,452	709,412
Total maturities, at fair value	2,304,611	2,511,003
Amortized cost
Less than one year, at amortized cost	5,457	21,423
Greater than one year and less than five years, at amortized cost	549,443	403,250
Greater than five years and less than ten years, at amortized cost	563,522	868,624
Greater than ten years, at amortized cost	420,536	485,823
Amortized Cost	1,538,958	1,779,120
Non-Agency RMBS - Senior interest-only
Fair value
Less than one year, at fair value	113	417
Greater than one year and less than five years, at fair value	55,264	37,796
Greater than five years and less than ten years, at fair value	72,087	115,780
Greater than ten years, at fair value	85,198	99,546
Total maturities, at fair value	212,662	253,539
Amortized cost
Less than one year, at amortized cost	1,301	1,992
Greater than one year and less than five years, at amortized cost	78,615	50,252
Greater than five years and less than ten years, at amortized cost	91,461	134,642
Greater than ten years, at amortized cost	96,587	105,510
Amortized Cost	267,964	292,396
Non-Agency RMBS - Subordinated
Fair value
Less than one year, at fair value	0	0
Greater than one year and less than five years, at fair value	83,242	94,793
Greater than five years and less than ten years, at fair value	183,777	238,630
Greater than ten years, at fair value	154,468	220,075
Total maturities, at fair value	421,487	553,498
Amortized cost
Less than one year, at amortized cost	0	0
Greater than one year and less than five years, at amortized cost	67,164	76,287
Greater than five years and less than ten years, at amortized cost	152,048	195,538
Greater than ten years, at amortized cost	134,909	205,052
Amortized Cost	354,121	476,877
Non-Agency RMBS - Subordinated interest-only
Fair value
Less than one year, at fair value	0	0
Greater than one year and less than five years, at fair value	133	0
Greater than five years and less than ten years, at fair value	11,455	12,024
Greater than ten years, at fair value	0	0
Total maturities, at fair value	11,588	12,024
Amortized cost
Less than one year, at amortized cost	0	0
Greater than one year and less than five years, at amortized cost	152	0
Greater than five years and less than ten years, at amortized cost	12,816	13,878
Greater than ten years, at amortized cost	0	0
Amortized Cost	12,968	13,878
Agency MBS - Residential
Fair value
Less than one year, at fair value	0	0
Greater than one year and less than five years, at fair value	32,666	429,869
Greater than five years and less than ten years, at fair value	2,395,446	2,276,109
Greater than ten years, at fair value	0	0
Total maturities, at fair value	2,428,112	2,705,978
Amortized cost
Less than one year, at amortized cost	0	0
Greater than one year and less than five years, at amortized cost	33,035	438,270
Greater than five years and less than ten years, at amortized cost	2,412,191	2,306,172
Greater than ten years, at amortized cost	0	0
Amortized Cost	2,445,226	2,744,442
Agency MBS - Commercial
Fair value
Less than one year, at fair value	0	0
Greater than one year and less than five years, at fair value	46,263	47,354
Greater than five years and less than ten years, at fair value	16,817	16,833
Greater than ten years, at fair value	1,748,870	1,252,788
Total maturities, at fair value	1,811,950	1,316,975
Amortized cost
Less than one year, at amortized cost	0	0
Greater than one year and less than five years, at amortized cost	47,639	49,027
Greater than five years and less than ten years, at amortized cost	17,216	17,247
Greater than ten years, at amortized cost	1,750,128	1,300,363
Amortized Cost	1,814,983	1,366,637
Agency MBS - Interest-only
Fair value
Less than one year, at fair value	0	0
Greater than one year and less than five years, at fair value	82,985	75,863
Greater than five years and less than ten years, at fair value	27,122	63,715
Greater than ten years, at fair value	4,703	5,222
Total maturities, at fair value	114,810	144,800
Amortized cost
Less than one year, at amortized cost	0	0
Greater than one year and less than five years, at amortized cost	87,733	77,598
Greater than five years and less than ten years, at amortized cost	29,200	69,333
Greater than ten years, at amortized cost	4,420	5,244
Amortized Cost	$ 121,353	$ 152,175

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Mortgage-Backed Securities - Geographical and Other Statistics (Detail) - Non-agency MBS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Investment Holdings [Line Items]
Weighted average maturity (years)	20 years 10 months 24 days	21 years 7 months 6 days
Weighted average amortized loan to value	65.10%	66.50%
Weighted average FICO	674	675
Weighted average loan balance (in thousands)	$ 320	$ 319
Weighted average percentage owner occupied	83.90%	83.20%
Weighted average percentage single family residence	65.70%	65.80%
Weighted average current credit enhancement	2.20%	2.30%
California
Investment Holdings [Line Items]
Weighted average geographic concentration of top four states	32.00%	32.10%
New York
Investment Holdings [Line Items]
Weighted average geographic concentration of top four states	8.40%	7.90%
Florida
Investment Holdings [Line Items]
Weighted average geographic concentration of top four states	8.20%	8.10%
New Jersey
Investment Holdings [Line Items]
Weighted average geographic concentration of top four states	2.70%	2.70%

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Mortgage-Backed Securities - Year Originated (Detail) - Non-agency MBS	Sep. 30, 2017	Dec. 31, 2016
Origination Year as a Percentage of Outstanding Principal Balance:
2003 (and prior)	3.60%	3.60%
2004	4.80%	4.20%
2005	19.70%	20.20%
2006	39.80%	38.00%
2007	29.60%	31.30%
2008	1.70%	1.80%
2009 and later	0.80%	0.90%
Total	100.00%	100.00%

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Mortgage-Backed Securities - Gains and Losses from Sales of Investments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales	$ 598,752	$ 58,036	$ 772,496	$ 2,697,239
Gross realized gains	6,902	3,622	17,468	16,798
Gross realized losses	(6,901)	(543)	(7,759)	(9,763)
Net realized gain (loss)	$ 1	$ 3,079	$ 9,709	$ 7,035

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Loans Held for Investment - Narrative (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
Securitized debt loans held for investment at cost	$ 13,100,000	$ 8,600,000
Fair Value | Seasoned Subprime Residential Mortgage Loans
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
90 and over days delinquent	591,000	449,000
Loans Held for Investment at Fair Value | Seasoned Subprime Residential Mortgage Loans
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
90 and over days delinquent	294,458	190,991
Real estate held-for-sale	$ 10,000	$ 13,000

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Loans Held for Investment - Roll-Forward (Detail) - Variable Interest Entities, Primary Beneficiary, Aggregated Disclosure - Loans Held for Investment at Fair Value - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance, beginning of period	$ 8,753,653	$ 4,768,416
Purchases	5,835,799	4,897,370
Principal paydowns	(1,298,856)	(1,022,414)
Sales and settlements	2,942	5,007
Net periodic accretion (amortization)	(27,310)	(41,363)
Change in fair value	271,824	146,637
Balance, end of period	$ 13,538,052	$ 8,753,653

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Loans Held for Investment - Year Originated (Detail) - Loans Held for Investment at Fair Value - Seasoned Subprime Residential Mortgage Loans	Sep. 30, 2017	Dec. 31, 2016
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
2002 and prior	7.70%	8.90%
2003	6.90%	5.20%
2004	15.30%	11.90%
2005	20.90%	20.50%
2006	21.80%	22.00%
2007	18.80%	20.90%
2008	5.90%	6.50%
2009	0.60%	0.60%
2010 and later	2.10%	3.50%
Total	100.00%	100.00%

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Loans Held for Investment - Collateral Characteristics (Detail) - Loans Held for Investment at Fair Value - Seasoned Subprime Residential Mortgage Loans $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017 USD ($) loan	Dec. 31, 2016 USD ($) loan
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
Number of loans | loan	147,340	95,155
Weighted average maturity (years)	18 years 9 months 18 days	19 years 9 months 18 days
Weighted average loan to value	87.90%	86.90%
Weighted average FICO	629	627
Weighted average loan balance (in thousands) | $	$ 90	$ 93
Weighted average percentage owner occupied	94.00%	96.60%
Weighted average percentage single family residence	85.00%	85.00%
California
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
Weighted average geographic concentration of top four states	9.20%	10.00%
Florida
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
Weighted average geographic concentration of top four states	7.10%	6.70%
Ohio
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
Weighted average geographic concentration of top four states	6.20%	6.50%
Pennsylvania
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
Weighted average geographic concentration of top four states	5.60%
Virginia
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
Weighted average geographic concentration of top four states	5.40%	5.90%
North Carolina
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
Weighted average geographic concentration of top four states		5.10%

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Loans Held for Investment - Aging (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
Unpaid Principal/Notional	$ 13,327,252	$ 8,868,783
Loans Held for Investment at Fair Value | Seasoned Subprime Residential Mortgage Loans
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
30 Days Delinquent	462,865	363,899
60 Days Delinquent	157,872	140,495
90 and Over Days Delinquent	294,458	190,991
Bankruptcy	230,435	207,364
Foreclosure	172,129	203,265
REO	30,306	40,709
Total	$ 1,348,065	$ 1,146,723
% of Unpaid Principal/Notional	10.10%	12.90%
% of Unpaid Principal/Notional, Bankruptcy	1.70%	2.30%
% of Unpaid Principal/Notional, Foreclosures	1.30%	2.30%
% of Unpaid Principal/Notional, REO	0.20%	0.50%
30 Days Delinquent | Loans Held for Investment at Fair Value | Seasoned Subprime Residential Mortgage Loans
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
% of Unpaid Principal/Notional	3.50%	4.10%
60 Days Delinquent | Loans Held for Investment at Fair Value | Seasoned Subprime Residential Mortgage Loans
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
% of Unpaid Principal/Notional	1.20%	1.60%
90 Days Delinquent | Loans Held for Investment at Fair Value | Seasoned Subprime Residential Mortgage Loans
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
% of Unpaid Principal/Notional	2.20%	2.20%

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Fair Value Measurements - Level of Fair Value (Detail) $ in Thousands	Sep. 30, 2017 USD ($) loan	Dec. 31, 2016 USD ($) loan	Sep. 30, 2016 USD ($)
Assets:
Non-Agency RMBS, at fair value	$ 2,950,348	$ 3,330,063
Agency MBS, at fair value	4,354,872	4,167,754
Loans held for investment, at fair value	13,538,052	8,753,653	$ 8,909,037
Derivatives, at fair value, net	22,525	9,677
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	(9,683,062)	(6,941,097)	$ (7,191,462)
Derivative, Total	(1,204)	(2,350)
Fair Value, Measurements, Recurring
Assets:
Non-Agency RMBS, at fair value	2,950,348	3,330,063
Agency MBS, at fair value	4,354,872	4,167,754
Loans held for investment, at fair value	13,538,052	8,753,653
Counterparty and Cash Collateral, netting	(5,110)	(14,435)
Derivatives, at fair value, net	22,525	9,677
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	(9,683,062)	(6,941,097)
Counterparty and Cash Collateral, netting	5,110	14,875
Derivative, Total	(1,204)	(2,350)
Total	11,181,531	9,317,700
Total	0	440
Fair Value, Measurements, Recurring | Level 1
Assets:
Non-Agency RMBS, at fair value	0	0
Agency MBS, at fair value	0	0
Loans held for investment, at fair value	0	0
Derivatives	4,864	1,785
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	0	0
Derivatives	0	0
Total	4,864	1,785
Fair Value, Measurements, Recurring | Level 2
Assets:
Non-Agency RMBS, at fair value	0	0
Agency MBS, at fair value	4,354,872	4,167,754
Loans held for investment, at fair value	0	0
Derivatives	22,771	22,327
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	0	0
Derivatives	(6,314)	(17,225)
Total	4,371,329	4,172,856
Fair Value, Measurements, Recurring | Level 3
Assets:
Non-Agency RMBS, at fair value	2,950,348	3,330,063
Agency MBS, at fair value	0	0
Loans held for investment, at fair value	13,538,052	8,753,653
Derivatives	0	0
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	(9,683,062)	(6,941,097)
Derivatives	0	0
Total	$ 6,805,338	$ 5,142,619
Investments with Difference Between Model Price and Third-Party Price | Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans internally valued lower than third party prices | loan	4	10
Excess (deficit) of third party prices over internally developed price	$ 17,000	$ 16,000
Investments with Difference Between Model Price and Third-Party Price | Securitized Loans Held For Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Excess (deficit) of third party prices over internally developed price	6,000	50,000
Internal Assessment | Investments with Difference Between Model Price and Third-Party Price | Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	21,000	123,000
Internal Assessment | Investments with Difference Between Model Price and Third-Party Price | Securitized Loans Held For Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	380,000	1,600,000
Third Party Assessment | Investments with Difference Between Model Price and Third-Party Price | Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	38,000	107,000
Third Party Assessment | Investments with Difference Between Model Price and Third-Party Price | Securitized Loans Held For Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 386,000	$ 1,550,000

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Fair Value Measurements - Schedule of Unpaid Principal, Fair Value and Impact of Changes in Fair Value on Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Assets:
Loans held for investment,Unpaid Principal/Notional	$ 13,327,252	$ 9,030,908	$ 13,327,252	$ 9,030,908
Loans held for investment, at fair value	13,538,052	8,909,037	13,538,052	8,909,037	$ 8,753,653
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment, Unpaid Principal/Notional	9,622,994	7,334,475	9,622,994	7,334,475
Securitized debt at fair value, collateralized by loans held for investment, fair value	9,683,062	7,191,462	9,683,062	7,191,462	$ 6,941,097
Non-agency RMBS | Subordinated
Assets:
Fair Value	14,761	20,671	14,761	20,671
Gain (Loss) on Change in Fair Value	2,678	8,257	1,791	7,551
Non-agency RMBS | Senior, interest-only
Assets:
Principal or Notional Value	4,948,265	5,733,457	4,948,265	5,733,457
Fair Value	212,662	291,526	212,662	291,526
Gain (Loss) on Change in Fair Value	1,784	2,214	(16,446)	22,332
Non-agency RMBS | Subordinated, interest-only
Assets:
Principal or Notional Value	256,286	269,868	256,286	269,868
Fair Value	11,588	13,498	11,588	13,498
Gain (Loss) on Change in Fair Value	1,048	1,289	475	3,288
Agency MBS | Residential Pass-through
Assets:
Principal or Notional Value	586,030	0	586,030	0
Fair Value	614,758	0	614,758	0
Gain (Loss) on Change in Fair Value	(2,457)	0	(2,457)	0
Agency MBS | Commercial Pass-through
Assets:
Principal or Notional Value	407,943	0	407,943	0
Fair Value	410,013	0	410,013	0
Gain (Loss) on Change in Fair Value	(1,852)	0	(1,852)	0
Agency MBS | Interest-only
Assets:
Principal or Notional Value	3,176,110	3,474,731	3,176,110	3,474,731
Fair Value	114,810	157,088	114,810	157,088
Gain (Loss) on Change in Fair Value	(779)	(345)	831	430
Loans held for investment
Assets:
Gain (Loss) on Change in Fair Value	57,114	68,508	271,824	113,646
Securitized debt
Assets:
Gain (Loss) on Change in Fair Value	$ (38,494)	$ (46,923)	$ (95,120)	$ (67,029)

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Fair Value Measurements - Interest Only MBS (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-Agency RMBS, at fair value		$ 2,950,348		$ 2,950,348		$ 3,330,063
Agency MBS, at fair value		4,354,872		4,354,872		4,167,754
Interest income	[1]	296,813	$ 250,953	836,801	$ 673,246
Interest-only | Residential Mortgage-Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest income		7,000	$ 10,000	24,000	$ 32,000
Interest-only | Residential Mortgage-Backed Securities | Non-Agency RMBS - Interest-only
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-Agency RMBS, at fair value		224,000		224,000		266,000
Interest-only | Residential Mortgage-Backed Securities | Agency MBS - Interest-only
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Agency MBS, at fair value		115,000		115,000		145,000
Non-Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-Agency RMBS, at fair value		$ 15,000		$ 15,000		$ 19,000

[1] Includes interest income of consolidated VIEs of $241,195 and $195,488 for the quarters ended September 30, 2017 and 2016, respectively and interest income of consolidated VIEs of $668,621 and $488,353 for the nine months ended September 30, 2017 and 2016 respectively. See Note 8 to consolidated financial statements for further discussion.

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Fair Value Measurements - Unobservable Input Reconciliation (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Securitized Debt | Variable Interest Entities, Primary Beneficiary, Aggregated Disclosure
Fair Value, Assets Measured on Recurring Basis [Roll Forward]
Other than temporary credit impairment losses	$ 0	$ 0
Realized gains (losses) on sales and settlements	(48,014)	(122)
Net unrealized gains (losses) included in income	(95,120)	(89,766)
Fair Value, Liabilities Measured on Recurring Basis [Roll Forward]
Securitized Debt, Beginning balance, Level 3	(6,941,097)	(3,720,496)
Securitized Debt, Transfers in to Level 3 assets	0	0
Securitized Debt, Transfers out of Level 3 assets	0	0
Securitized Debt, Purchases	(4,159,073)	(4,797,255)
Securitized Debt, Principal payments	1,319,120	1,059,854
Securitized Debt, Sales and Settlements	245,369	608,816
Securitized Debt, Accretion (amortization) of purchase discounts	(4,247)	(2,128)
Securitized Debt, Gains (losses) included in other comprehensive income	0	0
Securitized Debt, Ending balance, Level 3	(9,683,062)	(6,941,097)
Non-agency MBS
Fair Value, Assets Measured on Recurring Basis [Roll Forward]
Beginning balance Level 3 assets	3,330,063	3,675,841
Transfers in to Level 3 assets	6,112	0
Transfers out of Level 3 assets	0	0
Purchases	71,116	257,914
Principal payments	(459,854)	(532,696)
Sales and settlements	(68,164)	(149,938)
Accretion (amortization) of purchase discounts	92,201	120,638
Other than temporary credit impairment losses	(41,702)	(57,986)
Realized gains (losses) on sales and settlements	12,031	13,761
Net unrealized gains (losses) included in income	(14,179)	3,173
Total unrealized gains (losses) for the period	22,724	(644)
Ending balance Level 3 assets	2,950,348	3,330,063
Loans held for investment | Variable Interest Entities, Primary Beneficiary, Aggregated Disclosure
Fair Value, Assets Measured on Recurring Basis [Roll Forward]
Beginning balance Level 3 assets	8,753,653	4,768,416
Transfers in to Level 3 assets	0	0
Transfers out of Level 3 assets	0	0
Purchases	5,835,799	4,897,370
Principal payments	(1,298,856)	(1,022,414)
Sales and settlements	2,942	5,007
Accretion (amortization) of purchase discounts	(27,310)	(41,363)
Other than temporary credit impairment losses	0	0
Realized gains (losses) on sales and settlements	0	0
Net unrealized gains (losses) included in income	271,824	146,637
Total unrealized gains (losses) for the period	0	0
Ending balance Level 3 assets	$ 13,538,052	$ 8,753,653

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Fair Value Measurements - Unobservable Input Reconciliation - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Non-agency MBS
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Transfers in to Level 3 assets	$ 6,112	$ 0

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Fair Value Measurements - Unobservable Inputs Assumptions - Non-Agency RMBS Held for Investment (Detail) - Level 3	Sep. 30, 2017	Dec. 31, 2016
Non-Agency RMBS - Senior
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted Average Discount Rate	4.60%	5.40%
Non-Agency RMBS - Senior interest-only
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted Average Discount Rate	11.80%	12.50%
Non-Agency RMBS - Subordinated
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted Average Discount Rate	5.90%	6.20%
Non-Agency RMBS - Subordinated interest-only
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted Average Discount Rate	10.90%	13.20%
Minimum | Non-Agency RMBS - Senior
Fair Value Inputs, Assets, Quantitative Information [Line Items]
CPR	1.00%	1.00%
CDR	0.00%	0.00%
Loss Severity	35.00%	35.00%
Minimum | Non-Agency RMBS - Senior interest-only
Fair Value Inputs, Assets, Quantitative Information [Line Items]
CPR	4.00%	3.00%
CDR	0.00%	0.00%
Loss Severity	35.00%	35.00%
Minimum | Non-Agency RMBS - Subordinated
Fair Value Inputs, Assets, Quantitative Information [Line Items]
CPR	1.00%	1.00%
CDR	0.00%	0.00%
Loss Severity	35.00%	0.00%
Minimum | Non-Agency RMBS - Subordinated interest-only
Fair Value Inputs, Assets, Quantitative Information [Line Items]
CPR	10.00%	6.00%
CDR	0.00%	0.00%
Loss Severity	35.00%	35.00%
Maximum | Non-Agency RMBS - Senior
Fair Value Inputs, Assets, Quantitative Information [Line Items]
CPR	45.00%	35.00%
CDR	60.00%	22.00%
Loss Severity	95.00%	95.00%
Maximum | Non-Agency RMBS - Senior interest-only
Fair Value Inputs, Assets, Quantitative Information [Line Items]
CPR	28.00%	30.00%
CDR	64.00%	22.00%
Loss Severity	95.00%	95.00%
Maximum | Non-Agency RMBS - Subordinated
Fair Value Inputs, Assets, Quantitative Information [Line Items]
CPR	20.00%	25.00%
CDR	21.00%	18.00%
Loss Severity	77.00%	79.00%
Maximum | Non-Agency RMBS - Subordinated interest-only
Fair Value Inputs, Assets, Quantitative Information [Line Items]
CPR	18.00%	15.00%
CDR	11.00%	11.00%
Loss Severity	59.00%	76.00%

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Fair Value Measurements - Unobservable Inputs Assumptions - Securitized Debt (Detail)	Sep. 30, 2017	Dec. 31, 2016
Minimum | Level 3 | Securitized Debt at Fair Value, Collateralized by Loans Held for Investment
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Securitized debt at fair value, collateralized by loans held for investment, CPR Range	1.00%	1.00%
Securitized debt at fair value, collateralized by loans held for investment, CDR Range	0.00%	0.00%
Securitized debt at fair value, collateralized by loans held for investment, Loss Severity Range	35.00%	35.00%
Maximum | Level 3 | Securitized Debt at Fair Value, Collateralized by Loans Held for Investment
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Securitized debt at fair value, collateralized by loans held for investment, CPR Range	22.00%	35.00%
Securitized debt at fair value, collateralized by loans held for investment, CDR Range	30.00%	30.00%
Securitized debt at fair value, collateralized by loans held for investment, Loss Severity Range	70.00%	65.00%
Loans held for investment | Variable Interest Entities, Primary Beneficiary, Aggregated Disclosure | Securitized Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Weighted Average Discount Rate	4.14%	3.99%

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Fair Value Measurements - Unobservable Inputs Assumptions - Loans Held for Investment (Detail) - Loans Held for Investment at Fair Value - Level 3	Sep. 30, 2017	Dec. 31, 2016
Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Coupon	7.00%	7.10%
FICO	626	621
Loan-to-value (LTV)	88.00%	88.00%
Weighted Average | Single family
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted average percent	86.00%	86.00%
Weighted Average | Manufactured housing
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted average percent	5.00%	6.00%
Weighted Average | Multi-family/mixed use/other
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted average percent	9.00%	8.00%
Weighted Average | Owner Occupied
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted average percent	94.00%	97.00%
Weighted Average | Investor
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted average percent	2.00%	2.00%
Weighted Average | Secondary
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted average percent	4.00%	1.00%
Base Rate
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Coupon	4.70%	5.20%
FICO	634	632
Loan-to-value (LTV)	89.00%	87.00%

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Fair Value Measurements - Carrying and Fair Values (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securitized debt, collateralized by Non-Agency RMBS	$ 233,113	$ 334,124
Carrying Amount | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Repurchase agreements	6,709,821	5,600,903
Carrying Amount | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securitized debt, collateralized by Non-Agency RMBS	233,113	334,124
Fair Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Repurchase agreements	6,727,850	5,619,385
Fair Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securitized debt, collateralized by Non-Agency RMBS	$ 221,567	$ 324,261

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Repurchase Agreements - Outstanding, Weighted Average Borrowing Rates, Weighted Average Remaining Maturities, Average Daily Balances and the Fair Value of Collateral Pledged (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements outstanding secured by:	$ 6,709,821	$ 5,600,903
Repurchase Agreements | Agency MBS - Residential
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements outstanding secured by:	3,096,233	3,087,734
Average balance of Repurchase agreements secured by:	$ 3,129,569	$ 4,159,651
Average borrowing rate of Repurchase agreements secured by:	1.39%	0.90%
Average remaining maturity of Repurchase agreements secured by:	21 days	32 days
Average original maturity of Repurchase agreements secured by:	76 days	112 days
MBS pledged as collateral at fair value on Repurchase agreements:	$ 3,332,640	$ 3,334,245
Repurchase Agreements | Non-agency MBS and Loans held for investment (in thousands)
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements outstanding secured by:	3,613,588	2,513,169
Average balance of Repurchase agreements secured by:	$ 2,983,319	$ 2,322,683
Average borrowing rate of Repurchase agreements secured by:	3.25%	3.05%
Average remaining maturity of Repurchase agreements secured by:	73 days	98 days
Average original maturity of Repurchase agreements secured by:	109 days	155 days
MBS pledged as collateral at fair value on Repurchase agreements:	$ 4,817,669	$ 3,699,621
Repurchase Agreements | Residential Mortgage-Backed Securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements outstanding secured by:	6,709,821	5,600,903
Average balance of Repurchase agreements secured by:	6,112,888	6,482,334
MBS pledged as collateral at fair value on Repurchase agreements:	$ 8,150,309	$ 7,033,866

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Repurchase Agreements - Maturities (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements outstanding	$ 6,709,821	$ 5,600,903
Overnight
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements outstanding	0	0
1 to 29 days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements outstanding	3,777,160	2,947,604
30 to 59 days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements outstanding	1,591,370	958,956
60 to 89 days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements outstanding	330,186	407,625
90 to 119 days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements outstanding	28,798	559,533
Greater than or equal to 120 days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements outstanding	$ 982,307	$ 727,185

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Repurchase Agreements - Narrative (Detail) - Repurchase Agreements - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Credit Suisse First Boston
Short-term Debt [Line Items]
Amount at risk	$ 404	$ 320
Securities Pledged as Collateral | Nomura Securities Company Limited | Credit Concentration Risk | Stockholders' Equity, Total
Short-term Debt [Line Items]
Collateral posted on repurchase agreements, percentage of equity	11.00%
Securities Pledged as Collateral | Credit Suisse First Boston | Credit Concentration Risk | Stockholders' Equity, Total
Short-term Debt [Line Items]
Collateral posted on repurchase agreements, percentage of equity		10.00%
Weighted average maturity	77 days	104 days

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Securitized Debt - Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Debt Instrument [Line Items]
Gains (losses) on extinguishment of debt	$ (1)		$ (45)		$ (48,016)	$ (1,811)
Securitized Loans | Non-agency MBS
Debt Instrument [Line Items]
Acquired securitized debt collateral outstanding principal balance	166		4,000
Repurchase of securitized debt borrowings, collateralized by Non-Agency RMBS	167		4,000
Gains (losses) on extinguishment of debt	(1)		$ (45)		(1)	(45)
Securitized Loans | Variable Interest Entities, Primary Beneficiary, Aggregated Disclosure | Non-agency MBS
Debt Instrument [Line Items]
Principal balance of debt	$ 247,000				$ 247,000		$ 350,000
Weighted average cost of financing	5.88%				5.88%		5.21%
Securitized Loans | Variable Interest Entities, Primary Beneficiary, Aggregated Disclosure | Loans held for investment
Debt Instrument [Line Items]
Principal balance of debt	$ 9,600,000				$ 9,600,000		$ 7,100,000
Weighted average cost of financing	4.14%				4.14%		3.99%
Securitized Loans | Variable Interest Entities, Primary Beneficiary | Loans held for investment
Debt Instrument [Line Items]
Acquired securitized debt collateral outstanding principal balance		$ 197,000		$ 44,000
Repurchase of securitized debt borrowings, collateralized by Non-Agency RMBS		$ 245,000		$ 46,000
Gains (losses) on extinguishment of debt					$ (48,000)	$ (2,000)

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Securitized Debt - Maturities (Detail) - Variable Interest Entities, Primary Beneficiary, Aggregated Disclosure - Securitized Loans - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Non-agency MBS
Debt Instrument [Line Items]
Within One Year	$ 62,165	$ 98,565
One to Three Years	50,055	82,563
Three to Five Years	21,013	23,854
Greater Than Five Years	5,913	31,973
Total	139,146	236,955
Loans held for investment
Debt Instrument [Line Items]
Within One Year	1,856,397	1,151,519
One to Three Years	2,907,977	1,841,808
Three to Five Years	2,163,866	1,423,706
Greater Than Five Years	2,630,039	2,477,123
Total	$ 9,558,279	$ 6,894,156

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Securitized Debt - Callable Debt (Detail) - Securitized Loans $ in Thousands	Sep. 30, 2017 USD ($)
Debt Instrument, Redemption [Line Items]
2017	$ 811,395
2018	1,002,614
2019	416,722
2020	4,232,520
2021	2,961,293
Total	$ 9,424,544

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Consolidated Securitization Vehicles and Other Variable Interest Entities - Narrative (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Non-agency MBS
Variable Interest Entity [Line Items]
Unconsolidated VIEs, aggregate investment	$ 1,300,000	$ 1,500,000
Non-agency MBS | Minimum
Variable Interest Entity [Line Items]
Unconsolidated VIEs, individual investments (Less than $1 million minimum)	1,000	1,000
Non-agency MBS | Maximum
Variable Interest Entity [Line Items]
Unconsolidated VIEs, individual investments (Less than $1 million minimum)	51,000	51,000
Variable Interest Entities, Primary Beneficiary, Aggregated Disclosure
Variable Interest Entity [Line Items]
Assets	14,846,980	10,761,954
Liabilities	9,954,437	7,302,905
Variable Interest Entities, Not Primary Beneficiary, Aggregated Disclosure
Variable Interest Entity [Line Items]
Variable interest entity, reporting entity involvement, maximum loss exposure, amount	1,200,000	$ 1,400,000
Subprime | Residential Mortgage
Variable Interest Entity [Line Items]
Mortgage loans	5,300,000
Subsidiaries | Subprime | Residential Mortgage
Variable Interest Entity [Line Items]
Mortgage loans	$ 550,000

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Consolidated Securitization Vehicles and Other Variable Interest Entities - Effect on Consolidated Financial Condition (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Assets:
Non-Agency RMBS, at fair value	$ 2,950,348	$ 3,330,063
Loans held for investment, at fair value	13,538,052	8,753,653	$ 8,909,037
Accrued interest receivable	99,421	79,697
Other Assets	172,876	166,350
Liabilities:
Securitized debt, collateralized by Non-Agency RMBS	233,113	334,124
Securitized debt at fair value, collateralized by loans held for investment	9,683,062	6,941,097	$ 7,191,462
Accrued interest payable	64,280	48,670
Other liabilities	21,331	16,694
Variable Interest Entities, Primary Beneficiary
Assets:
Non-Agency RMBS, at fair value	1,646,762	1,842,080
Loans held for investment, at fair value	13,011,319	8,753,653
Accrued interest receivable	76,327	57,153
Other Assets	112,572	109,068
Liabilities:
Securitized debt, collateralized by Non-Agency RMBS	233,113	334,124
Securitized debt at fair value, collateralized by loans held for investment	9,683,062	6,941,097
Accrued interest payable	34,650	24,942
Other liabilities	3,612	$ 2,742
Consolidated Trusts | Variable Interest Entities, Primary Beneficiary
Assets:
Loans held for investment, at fair value	5,353,955
Other Assets	36,795
Liabilities:
Securitized debt at fair value, collateralized by loans held for investment	$ 4,171,458

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Consolidated Securitization Vehicles and Other Variable Interest Entities - Effect on Consolidated Results (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Variable Interest Entity [Line Items]
Net interest income	$ 156,455	$ 156,042	$ 448,257	$ 432,126
Total other-than-temporary impairment losses	(784)	(993)	(4,245)	(8,555)
Portion of loss recognized in other comprehensive income (loss)	(10,684)	(10,581)	(39,431)	(34,652)
Net other-than-temporary credit impairment losses	(11,468)	(11,574)	(43,676)	(43,207)
Servicing fees	10,715	9,788	31,193	23,139
Variable Interest Entities, Primary Beneficiary
Variable Interest Entity [Line Items]
Total other-than-temporary impairment losses	(668)	(21)	(1,777)	(866)
Portion of loss recognized in other comprehensive income (loss)	(10,108)	(4,599)	(35,720)	(31,925)
Net other-than-temporary credit impairment losses	(10,776)	(4,620)	(37,497)	(32,791)
Servicing fees	10,492	9,788	30,970	23,139
Non Agency Residential Mortgage Backed Securities And Securitized Loans | Variable Interest Entities, Primary Beneficiary
Variable Interest Entity [Line Items]
Interest income, Assets of consolidated VIEs	241,195	195,488	668,621	488,353
Interest expense, Non-recourse liabilities of VIEs	101,856	70,715	290,264	168,738
Net interest income	$ 139,339	$ 124,773	$ 378,357	$ 319,615

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Derivative Instruments - Effect on Consolidated Financial Condition (Detail) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Notional Amount Outstanding	$ 4,475,100,000	$ 2,640,600,000
Derivative Assets, Net Estimated Fair Value/Carrying Value	22,525,000	9,677,000
Derivative Liabilities, Net Estimated Fair Value/Carrying Value	(1,204,000)	(2,350,000)
Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Notional Amount Outstanding	3,373,400,000	1,396,900,000
Derivative Assets, Net Estimated Fair Value/Carrying Value	15,254,000	0
Derivative Liabilities, Net Estimated Fair Value/Carrying Value	0	0
Swaptions
Derivatives, Fair Value [Line Items]
Notional Amount Outstanding	482,000,000	624,000,000
Derivative Assets, Net Estimated Fair Value/Carrying Value	2,407,000	7,892,000
Derivative Liabilities, Net Estimated Fair Value/Carrying Value	(1,204,000)	(2,350,000)
Treasury Futures
Derivatives, Fair Value [Line Items]
Notional Amount Outstanding	619,700,000	619,700,000
Derivative Assets, Net Estimated Fair Value/Carrying Value	4,864,000	1,785,000
Derivative Liabilities, Net Estimated Fair Value/Carrying Value	$ 0	$ 0

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Derivative Instruments - Effect on Consolidated Results (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Net unrealized gains (losses) on derivatives	$ 9,204	$ 27,628	$ 19,902	$ (51,382)
Net gains (losses) on derivatives	1,363	13,360	(24,921)	(170,932)
Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Net unrealized gains (losses) on derivatives	5,001	13,395	15,694	(36,840)
Net realized gains (losses) on derivatives	(3,491)	(4,595)	(27,222)	(84,571)
Treasury Futures
Derivative Instruments, Gain (Loss) [Line Items]
Net unrealized gains (losses) on derivatives	3,467	12,149	3,079	(4,259)
Net realized gains (losses) on derivatives	(3,267)	(7,823)	(12,268)	(28,797)
Swaptions
Derivative Instruments, Gain (Loss) [Line Items]
Net unrealized gains (losses) on derivatives	736	2,084	1,129	(10,283)
Net realized gains (losses) on derivatives	(1,083)	(1,850)	(5,333)	(5,615)
Other Derivative Assets
Derivative Instruments, Gain (Loss) [Line Items]
Net unrealized gains (losses) on derivatives	0	0	0	0
Net realized gains (losses) on derivatives	$ 0	$ 0	$ 0	$ (567)

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Derivative Instruments - Effect on Consolidated Results - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Realized gains (losses) on terminations of interest rate swaps	$ 0	$ 0	$ (16,143)	$ (60,616)

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Derivative Instruments - Narrative (Detail) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Realized losses on terminations of interest rate swaps	$ 0	$ 0	$ 16,143,000	$ 60,616,000
Derivative instruments terminated			$ 250,000,000
The weighted average pay rate on the Company's interest rate swaps	1.71%		1.71%		2.13%
The weighted average receive rate on the Company's interest rate swaps	1.39%		1.39%		0.90%
The weighted average maturity on the Company's interest rate swaps			5 years		8 years
Fair value of credit risk derivative instruments in a net liability position	$ 6,000,000		$ 6,000,000
Early Terminated Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Derivative instruments terminated				$ 3,300,000,000

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Capital Stock - Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended
	Feb. 28, 2017	Oct. 31, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Class of Stock [Line Items]
Preferred Stock, shares authorized (shares)			100,000,000		100,000,000		100,000,000
Preferred Stock, par value (usd per share)			$ 0.01		$ 0.01		$ 0.01
Issuance of preferred stock cost					$ 314,429
Dividends on preferred stock			$ 9,400	$ 0	$ 24,083	$ 0
Preferred Class B
Class of Stock [Line Items]
Preferred Stock, shares authorized (shares)	13,000,000
Preferred Stock, dividend rate (percent)	8.00%				8.00%
Sale of stock price (in USD per share)	$ 25.00
Preferred stock, redemption price per share (in USD per share)	$ 25.00
Dividends on preferred stock			$ 7,000		$ 15,000
Preferred stock dividends declared (in USD per share)			$ 0.50		$ 1.18
Preferred Class A
Class of Stock [Line Items]
Preferred Stock, shares authorized (shares)		5,800,000
Preferred Stock, dividend rate (percent)	8.00%	8.00%			8.00%		8.00%
Preferred Stock, par value (usd per share)	$ 0.01	$ 0.01
Sale of stock price (in USD per share)	25.00	25
Preferred stock, redemption price per share (in USD per share)	25.00	$ 25
Fixed dividend amount (in USD per share)	$ 2.00
Dividends on preferred stock			$ 3,000		$ 9,000
Preferred stock dividends declared (in USD per share)			$ 0.50		$ 1.50
Preferred stock, issuance cost and discount on shares		$ 140,000
Additional Paid-in Capital
Class of Stock [Line Items]
Issuance of preferred stock cost	$ 314,000				$ 314,299
London Interbank Offered Rate (LIBOR) | Preferred Class A
Class of Stock [Line Items]
Preferred stock, basis spread on variable rate	5.791%

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Capital Stock - Common Stock (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Class of Stock [Line Items]
Stock repurchase program, authorized amount	$ 350,000,000		$ 350,000,000
Number of shares repurchased (shares)	0		0
Stock repurchase program, remaining authorized repurchase amount	$ 100,000,000		$ 100,000,000
Dividends declared per share of common stock (usd per share)	$ 0.5	$ 0.48	$ 1.5	$ 1.94
Common dividends declared			$ 282,275,000	$ 364,717,000
Regular Dividend
Class of Stock [Line Items]
Dividends declared per share of common stock (usd per share)	$ 0.50	$ 0.48	$ 1.50	$ 1.44
Common dividends declared	$ 94,000,000	$ 91,000,000	$ 282,000,000	$ 271,000,000
Special Dividend
Class of Stock [Line Items]
Dividends declared per share of common stock (usd per share)				$ 0.50
Common dividends declared				$ 94,000,000

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Capital Stock - Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator:
Net income available to common shareholders	$ 129,832	$ 172,817	$ 392,977	$ 330,042
Effect of dilutive securities:	0	0	0	0
Dilutive net income available to common shareholders	$ 129,832	$ 172,817	$ 392,977	$ 330,042
Denominator:
Weighted average basic shares (shares)	187,779,794	187,729,765	187,773,715	187,727,667
Effect of dilutive securities (shares)	412,317	190,027	403,042	190,027
Weighted average dilutive shares (shares)	188,192,111	187,919,792	188,176,757	187,917,694
Net income per average share attributable to common stockholders - Basic (usd per share)	$ 0.69	$ 0.92	$ 2.09	$ 1.76
Net income per average share attributable to common stockholders - Diluted (usd per share)	$ 0.69	$ 0.92	$ 2.09	$ 1.76

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Accumulated Other Comprehensive Income - Components of AOCI (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
AOCI [Roll Forward]
Beginning Balance	$ 3,123,533	$ 2,946,188
Ending Balance	3,646,431	3,036,800
Unrealized gains (losses) on available-for-sale securities, net
AOCI [Roll Forward]
Beginning Balance	718,106	773,791
OCI before reclassifications	59,114	94,059
Amounts reclassified from AOCI	35,898	29,853
Net current period OCI	95,012	123,912
Ending Balance	813,118	897,703
Total Accumulated OCI Balance
AOCI [Roll Forward]
Beginning Balance	718,106	773,791
OCI before reclassifications	59,114	94,059
Amounts reclassified from AOCI	35,898	29,853
Net current period OCI	95,012	123,912
Ending Balance	$ 813,118	$ 897,703

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Accumulated Other Comprehensive Income - Reclassifications from AOCI (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net realized gains (losses) on sales of investments	$ 1	$ 3,079	$ 9,709	$ 7,035
Net other-than-temporary credit impairment losses	(11,468)	(11,574)	(43,676)	(43,207)
Income before income taxes	139,250	172,830	417,232	330,107
Income taxes	(18)	(13)	(172)	(65)	$ 0
Net income (loss)	$ 139,232	$ 172,817	417,060	330,042
Amounts Reclassified from Accumulated OCI | Unrealized gains (losses) on available-for-sale securities, net
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net realized gains (losses) on sales of investments			7,778	13,354
Net other-than-temporary credit impairment losses			(43,676)	(43,207)
Income before income taxes			(35,898)	(29,853)
Income taxes			0	0
Net income (loss)			$ (35,898)	$ (29,853)

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Equity Compensation, Employment Agreements and other Benefit Plans - Narrative (Detail) shares in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2017 USD ($) shares	Mar. 31, 2017 USD ($) shares	Sep. 30, 2016 USD ($)	Mar. 31, 2016 USD ($) shares	Sep. 30, 2017 USD ($) installment shares	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common dividends declared	$ 1,000,000		$ 620,000		$ 2,755,000	$ 1,375,000
Stock Award Deferral Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments | installment					5
Restricted Stock | 2007 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grants (shares) | shares	6,000				6,000
Restricted Stock | Minimum | 2007 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					2 years
Restricted Stock | Maximum | 2007 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					10 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Forfeitures (shares) | shares		112		266
Grant date fair value		$ 2,000,000		$ 3,000,000
Restricted Stock Units (RSUs) | One year from grant date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					33.33%
Restricted Stock Units (RSUs) | Two years from grant date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					33.33%
Restricted Stock Units (RSUs) | Three years from grant date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					33.33%
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Grant date fair value					$ 3,000,000		$ 3,000,000
Granted shares (shares) | shares		144		180	144		180
Performance period					3 years
Performance Share Units | One year from grant date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					33.33%
Performance Share Units | Two years from grant date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					33.33%
Performance Share Units | Three years from grant date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					33.33%
Performance Share Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					0.00%
Performance Share Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					150.00%
401(k) Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum annual contributions per employee, amount					$ 18,000
Maximum annual contribution per employee, additional contribution per employee over certain age					6,000
Expense related to qualified plan	$ 84,000		$ 78,000		$ 299,000	$ 292,000
401(k) Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employer matching contribution, percent of match					100.00%
Employer matching contribution, percent of employees' gross pay					6.00%

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Income Taxes Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense	$ 18	$ 13	$ 172	$ 65	$ 0

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Credit Risk and Interest Rate Risk - Offsetting Assets and Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Repurchase Agreements
Gross Amounts of Recognized Assets (Liabilities)	$ (6,709,821)	$ (5,600,903)
Gross Amounts Offset in the Consolidated Statements of Financial Position	0	0
Net Amounts Offset in the Consolidated Statements of Financial Position	(6,709,821)	(5,600,903)
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Financial Instruments	8,150,308	7,033,866
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Cash Collateral (Received) Pledged	1,986	2,545
Net Amount	1,442,473	1,435,508
Derivative Asset
Net Amounts Offset in the Consolidated Statements of Financial Position	22,525	9,677
Derivative Liability
Net Amounts Offset in the Consolidated Statements of Financial Position	(1,204)	(2,350)
Total Liabilities
Gross Amounts of Recognized Assets (Liabilities)	(6,688,500)	(5,594,016)
Gross Amounts Offset in the Consolidated Statements of Financial Position	0	440
Net Amounts Offset in the Consolidated Statements of Financial Position	(6,688,500)	(5,593,576)
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Financial Instruments	8,151,587	7,044,207
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Cash Collateral (Received) Pledged	49,322	45,492
Net Amount	1,512,409	1,496,123
Interest Rate Swaps
Derivative Asset
Gross Amounts of Recognized Assets (Liabilities)	20,364	14,435
Gross Amounts Offset in the Consolidated Statements of Financial Position	(5,110)	(14,435)
Net Amounts Offset in the Consolidated Statements of Financial Position	15,254	0
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Financial Instruments	0	0
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Cash Collateral (Received) Pledged	46,339	0
Net Amount	61,593	0
Derivative Liability
Gross Amounts of Recognized Assets (Liabilities)	(5,110)	(14,875)
Gross Amounts Offset in the Consolidated Statements of Financial Position	5,110	14,875
Net Amounts Offset in the Consolidated Statements of Financial Position	0	0
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Financial Instruments	0	0
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Cash Collateral (Received) Pledged	0	39,627
Net Amount	0	39,627
Treasury Futures
Derivative Asset
Gross Amounts of Recognized Assets (Liabilities)	4,864	1,785
Gross Amounts Offset in the Consolidated Statements of Financial Position	0	0
Net Amounts Offset in the Consolidated Statements of Financial Position	4,864	1,785
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Financial Instruments	0	0
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Cash Collateral (Received) Pledged	997	3,320
Net Amount	5,861	5,105
Derivative Liability
Gross Amounts of Recognized Assets (Liabilities)	0	0
Gross Amounts Offset in the Consolidated Statements of Financial Position	0	0
Net Amounts Offset in the Consolidated Statements of Financial Position	0	0
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Financial Instruments	0	0
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Cash Collateral (Received) Pledged	0	0
Net Amount	0	0
Swaptions
Derivative Asset
Gross Amounts of Recognized Assets (Liabilities)	2,407	7,892
Gross Amounts Offset in the Consolidated Statements of Financial Position	0	0
Net Amounts Offset in the Consolidated Statements of Financial Position	2,407	7,892
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Financial Instruments	0	0
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Cash Collateral (Received) Pledged	0	0
Net Amount	2,407	7,892
Derivative Liability
Gross Amounts of Recognized Assets (Liabilities)	(1,204)	(2,350)
Gross Amounts Offset in the Consolidated Statements of Financial Position	0	0
Net Amounts Offset in the Consolidated Statements of Financial Position	(1,204)	(2,350)
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Financial Instruments	1,279	10,341
Gross Amounts Not Offset with Financial Assets (Liabilities) in the Consolidated Statements of Financial Position, Cash Collateral (Received) Pledged	0	0
Net Amount	$ 75	$ 7,991

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Subsequent Events (Details) - USD ($) $ in Thousands		9 Months Ended
	Oct. 01, 2017	Sep. 30, 2017	Sep. 30, 2016
Subsequent Event [Line Items]
Repayments of securitized debt		$ 1,564,489	$ 773,875
Securitized Loans | Subsequent Event
Subsequent Event [Line Items]
Repayments of securitized debt	$ 811,000