Consolidated Statement Of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH:
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 49,911	$ 35,964
Reconciliation of the net increase (decrease) in equity resulting from operations to net cash provided by (used in) operating activities:
Net realized (gain) loss on investments, financial derivatives, and foreign currency transactions		(25,368)	17,860
Change in net unrealized (gain) loss on investments, other secured borrowings, financial derivatives, and foreign currency translation		26,318	(13,750)
Amortization of premiums and accretion of discounts (net)		45,895	32,764
Purchase of investments		(3,350,398)	(2,849,027)
Proceeds from disposition of investments		1,868,532	1,962,711
Proceeds from principal payments of investments		497,858	286,426
Proceeds from investments sold short		2,674,841	1,718,668
Repurchase of investments sold short		(2,457,148)	(1,674,760)
Payments on financial derivatives		(119,490)	(103,499)
Proceeds from financial derivatives		121,904	109,496
Amortization of deferred debt issuance costs		263	97
Share-based long term incentive plan unit expense		415	385
Interest income related to consolidated securitization trust	[1]	(4,697)	(1,175)
Interest expense related to consolidated securitization trust	[1]	4,313	794
Debt issuance costs related to Other secured borrowings, at fair value	[1]	1,647	1,679
Repurchase agreements		94,675	28,870
(Increase) decrease in assets(2):
Receivable for securities sold and financial derivatives		(304,826)	(30,888)	[2]
Due from brokers		68,610	(46,753)	[2]
Interest and principal receivable		(7,988)	(7,984)	[2]
Other assets		28,234	(40,411)	[2]
Increase (decrease) in liabilities:
Due to brokers		3,832	(11,059)
Payable for securities purchased and financial derivatives		285,708	117,535
Accounts payable and accrued expenses		1,838	558
Incentive fee payable		0	0
Other liabilities		(17)	424
Interest and dividends payable		1,255	2,444
Base management fee payable to affiliate		(369)	(303)
Net cash provided by (used in) operating activities(2)		(494,181)	(462,934)
Cash flows provided by (used in) financing activities:
Contributions from non-controlling interests		21,532	20,707
Shares repurchased		(23,131)	(14,642)
Dividends paid		(50,736)	(57,636)
Distributions to non-controlling interests		(23,853)	(8,594)
Proceeds from issuance of Other secured borrowings		100,010	111,338
Principal payments on Other secured borrowings		(43,819)	(28,839)
Proceeds from issuance of Other secured borrowings, at fair value		102,706	106,590
Debt issuance costs related to Other secured borrowings, at fair value - financing activities		775	947
Proceeds from Issuance of Senior Long-term Debt		0	86,000
Payments of Debt Issuance Costs		0	(1,326)
Borrowings under reverse repurchase agreements		8,078,468	9,919,449
Repayments of reverse repurchase agreements		(7,668,798)	(9,745,437)
Net cash provided by (used in) financing activities		491,604	386,663
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH(2)		(2,577)	(76,271)	[2]
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF PERIOD	[2]	47,658	123,929
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, END OF PERIOD		45,081	47,658	[2]
Supplemental disclosure of cash flow information:
Interest paid		55,649	28,006
Share-based long term incentive plan unit awards (non-cash)		415	385
Aggregate TBA trade activity (buys sells) (non-cash)		29,752,907	23,917,506
Purchase of investments (non-cash)		(17,424)	(25,318)
Proceeds from principal payments of investments (non-cash)		49,731	27,307
Proceeds from the disposition of investments (non-cash)		17,424	26,800
Proceeds received from Other secured borrowings, at fair value (non-cash)		120,625	31,958
Proceeds from Issuance of Securitized Debt Non Cash		0	17,175
Principal payments on Other secured borrowings (non-cash)		0	(65,851)
Principal payments on Other secured borrowings, at fair value (non-cash)		(49,731)	(13,442)
Borrowings under reverse repurchase agreements (non-cash)		0	33,329
Repayments of reverse repurchase agreements (non-cash)		(120,136)	(31,607)
Shares Issued In Connection With Incentive Fee Payment Non-Cash		71	0
Debt issuance costs related to Other secured borrowings, at fair value (non-cash)		(872)	(732)
Share-based long term incentive plan unit redemption and distribution		(9,537)	0
Contribution from non-controlling interest (non-cash)		$ 9,537	$ 0

[1] Related to non-qualified mortgage securitization transactions. See Note 6 for further details.

[2] Conformed to current period presentation.