10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

ý Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.

For the quarterly period ended March 31, 2017

¨ 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 001-34657

TEXAS CAPITAL BANCSHARES, INC.

(Exact Name of Registrant as Specified in Its Charter)

Delaware	75-2679109
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

2000 McKinney Avenue, Suite 700, Dallas, Texas, U.S.A.	75201
(Address of principal executive officers)	(Zip Code)

214/932-6600

(Registrant’s telephone number,

including area code)

N/A

(Former Name, Former Address and Former Fiscal Year, if Changed Since Last Report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Exchange Act 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  ý    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  ý¨  No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer or a non-accelerated filer. See definition of “large accelerated filer” and “accelerated filer” Rule 12b-2 of the Exchange Act.

Large Accelerated Filer	ý	Accelerated Filer	¨
Non-Accelerated Filer	¨	Smaller Reporting 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 ý

APPLICABLE ONLY TO CORPORATE ISSUERS:

On April 19, 2017, the number of shares set forth below was outstanding with respect to each of the issuer’s classes of common stock:

Common Stock, par value $0.01 per share 49,564,933

Texas Capital Bancshares, Inc.

Form 10-Q

Quarter Ended March 31, 2017

Index

Part I. Financial Information
Item 1.	Financial Statements
	Consolidated Balance Sheets—Unaudited	3
	Consolidated Statements of Income and Other Comprehensive Income—Unaudited	4
	Consolidated Statements of Stockholders’ Equity—Unaudited	5
	Consolidated Statements of Cash Flows—Unaudited	6
	Notes to Consolidated Financial Statements—Unaudited	7
	Financial Summaries—Unaudited	30
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	31
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	44
Item 4.	Controls and Procedures	47
Part II. Other Information
Item 1.	Legal Proceedings	47
Item 1A.	Risk Factors	47
Item 6.	Exhibits	48
Signatures		49

2

PART I – FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

TEXAS CAPITAL BANCSHARES, INC.

CONSOLIDATED BALANCE SHEETS

(In thousands except share data)

	March 31, 2017			December 31, 2016
	(Unaudited)
Assets
Cash and due from banks	$	116,013		$	113,707
Interest-bearing deposits	2,779,921			2,700,645
Federal funds sold and securities purchased under resale agreements	25,000			25,000
Securities, available-for-sale	42,203			24,874
Loans held for sale, at fair value	884,647			968,929
Loans held for investment, mortgage finance	3,371,598			4,497,338
Loans held for investment (net of unearned income)	13,298,918			13,001,011
Less: Allowance for loan losses	172,013			168,126
Loans held for investment, net	16,498,503			17,330,223
Mortgage servicing rights, net	45,526			28,536
Premises and equipment, net	20,831			19,775
Accrued interest receivable and other assets	432,835			465,933
Goodwill and intangible assets, net	19,395			19,512
Total assets	$	20,864,874		$	21,697,134
Liabilities and Stockholders’ Equity
Liabilities:
Deposits:
Non-interest-bearing	$	7,094,696		$	7,994,201
Interest-bearing	9,510,684			9,022,630
Total deposits	16,605,380			17,016,831
Accrued interest payable	3,293			5,498
Other liabilities	169,385			161,223
Federal funds purchased and repurchase agreements	141,834			109,575
Other borrowings	1,500,000			2,000,000
Subordinated notes, net	281,134			281,044
Trust preferred subordinated debentures	113,406			113,406
Total liabilities	18,814,432			19,687,577
Stockholders’ equity:
Preferred stock, $.01 par value, $1,000 liquidation value:
Authorized shares – 10,000,000
Issued shares – 6,000,000 shares issued at March 31, 2017 and December 31, 2016	150,000			150,000
Common stock, $.01 par value:
Authorized shares – 100,000,000
Issued shares – 49,560,517 and 49,504,079 at March 31, 2017 and December 31, 2016, respectively	496			495
Additional paid-in capital	956,246			955,468
Retained earnings	943,291			903,187
Treasury stock (shares at cost: 417 at March 31, 2017 and December 31, 2016)	(8		)	(8		)
Accumulated other comprehensive income, net of taxes	417			415
Total stockholders’ equity	2,050,442			2,009,557
Total liabilities and stockholders’ equity	$	20,864,874		$	21,697,134

See accompanying notes to consolidated financial statements.

3

TEXAS CAPITAL BANCSHARES, INC.

CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME – UNAUDITED

(In thousands except per share data)

	Three months ended March 31,
	2017		2016
Interest income
Interest and fees on loans	$	176,624	$	155,885
Securities	225		261
Federal funds sold and securities purchased under resale agreements	530		372
Deposits in other banks	6,567		3,285
Total interest income	183,946		159,803
Interest expense
Deposits	13,293		8,822
Federal funds purchased	252		126
Repurchase agreements	1		3
Other borrowings	2,020		1,162
Subordinated notes	4,191		4,191
Trust preferred subordinated debentures	830		716
Total interest expense	20,587		15,020
Net interest income	163,359		144,783
Provision for credit losses	9,000		30,000
Net interest income after provision for credit losses	154,359		114,783
Non-interest income
Service charges on deposit accounts	3,045		2,110
Wealth management and trust fee income	1,357		813
Bank owned life insurance (BOLI) income	466		536
Brokered loan fees	5,678		4,645
Servicing income	2,201		(55		)
Swap fees	1,803		307
Other	2,560		2,941
Total non-interest income	17,110		11,297
Non-interest expense
Salaries and employee benefits	63,003		51,372
Net occupancy expense	6,111		5,812
Marketing	4,950		3,908
Legal and professional	7,453		5,324
Communications and technology	6,506		6,217
FDIC insurance assessment	5,994		5,469
Servicing related expenses	1,750		73
Other	10,327		8,645
Total non-interest expense	106,094		86,820
Income before income taxes	65,375		39,260
Income tax expense	22,833		14,132
Net income	42,542		25,128
Preferred stock dividends	2,438		2,438
Net income available to common stockholders	$	40,104	$	22,690
Other comprehensive income (loss)
Change in net unrealized gain on available-for-sale securities arising during period, before-tax	$	3	$	(38	)
Income tax expense/(benefit) related to net unrealized gain on available-for-sale securities	1		(14		)
Other comprehensive income/(loss), net of tax	2		(24		)
Comprehensive income	$	42,544	$	25,104
Basic earnings per common share	$	0.81	$	0.49
Diluted earnings per common share	$	0.80	$	0.49

See accompanying notes to consolidated financial statements.

4

TEXAS CAPITAL BANCSHARES, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - UNAUDITED

(In thousands except share data)

	Preferred Stock			Common Stock									Treasury Stock
	Shares	Amount		Shares	Amount		Additional Paid-in Capital			Retained Earnings			Shares		Amount			Accumulated Other Comprehensive Income (Loss), Net of Taxes			Total
Balance at December 31, 2015 (audited)	6,000,000	$	150,000	45,874,224	$	459	$	714,546		$	757,818		(417	)	$	(8	)	$	718		$	1,623,533
Comprehensive income:
Net income	—	—		—	—		—			25,128			—		—			—			25,128
Change in unrealized gain on available-for-sale securities, net of taxes of $14	—	—		—	—		—			—			—		—			(24		)	(24		)
Total comprehensive income																					25,104
Tax benefit related to exercise of stock-based awards	—	—		—	—		40			—			—		—			—			40
Stock-based compensation expense recognized in earnings	—	—		—	—		1,132			—			—		—			—			1,132
Preferred stock dividend	—	—		—	—		—			(2,438		)	—		—			—			(2,438		)
Issuance of stock related to stock-based awards	—	—		28,682	—		(283		)	—			—		—			—			(283		)
Balance at March 31, 2016	6,000,000	$	150,000	45,902,906	$	459	$	715,435		$	780,508		(417	)	$	(8	)	$	694		$	1,647,088
Balance at December 31, 2016 (audited)	6,000,000	$	150,000	49,504,079	$	495	$	955,468		$	903,187		(417	)	$	(8	)	$	415		$	2,009,557
Comprehensive income:
Net income	—	—		—	—		—			42,542			—		—			—			42,542
Change in unrealized gain on available-for-sale securities, net of taxes of $1	—	—		—	—		—			—			—		—			2			2
Total comprehensive income																					42,544
Stock-based compensation expense recognized in earnings	—	—		—	—		1,669			—			—		—			—			1,669
Preferred stock dividend	—	—		—	—		—			(2,438		)	—		—			—			(2,438		)
Issuance of stock related to stock-based awards	—	—		22,843	1		(891		)	—			—		—			—			(890		)
Issuance of common stock related to warrants	—	—		33,595	—		—			—			—		—			—			—
Balance at March 31, 2017	6,000,000	$	150,000	49,560,517	$	496	$	956,246		$	943,291		(417	)	$	(8	)	$	417		$	2,050,442

See accompanying notes to consolidated financial statements.

5

TEXAS CAPITAL BANCSHARES, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS—UNAUDITED

(In thousands)

	Three months ended March 31,
	2017			2016
Operating activities
Net income	$	42,542		$	25,128
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	9,000			30,000
Depreciation and amortization	6,216			5,092
Bank owned life insurance (BOLI) income	(466		)	(536		)
Stock-based compensation expense	4,559			459
Excess tax benefits from stock-based compensation arrangements	—			(109		)
Purchases of loans held for sale	(1,299,542		)	(364,919		)
Proceeds from sales and repayments of loans held for sale	1,379,834			352,668
(Gain) loss on sale of loans held for sale and other assets	988			104
Changes in operating assets and liabilities:
Accrued interest receivable and other assets	19,548			(48,756		)
Accrued interest payable and other liabilities	(927		)	6,173
Net cash provided by operating activities	161,752			5,304
Investing activities
Purchases of available-for-sale securities	(18,832		)	(391		)
Maturities and calls of available-for-sale securities	275			264
Principal payments received on available-for-sale securities	1,231			1,620
Originations of mortgage finance loans	(15,100,024		)	(19,706,715		)
Proceeds from pay-offs of mortgage finance loans	16,225,764			19,691,687
Net increase in loans held for investment, excluding mortgage finance loans	(303,595		)	(321,571		)
Purchase of premises and equipment, net	(2,597		)	(859		)
Proceeds from sale of foreclosed assets	128			62
Net cash provided by (used in) investing activities	802,350			(335,903		)
Financing activities
Net increase (decrease) in deposits	(411,451		)	1,214,228
Costs from issuance of stock related to stock-based awards and warrants	(890		)	(283		)
Preferred dividends paid	(2,438		)	(2,438		)
Net increase in other borrowings	(500,000		)	104,000
Excess tax benefits from stock-based compensation arrangements	—			109
Net increase (decrease) in Federal funds purchased and repurchase agreements	32,259			(42,192		)
Net cash provided by (used in) financing activities	(882,520		)	1,273,424
Net increase in cash and cash equivalents	81,582			942,825
Cash and cash equivalents at beginning of period	2,839,352			1,790,870
Cash and cash equivalents at end of period	$	2,920,934		$	2,733,695
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	$	22,792		$	17,237
Cash paid during the period for income taxes	482			333
Transfers from loans/leases to OREO and other repossessed assets	—			17,398

See accompanying notes to consolidated financial statements.

6

TEXAS CAPITAL BANCSHARES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—UNAUDITED

(1) OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Organization and Nature of Business

Texas Capital Bancshares, Inc. (the “Company”), a Delaware corporation, was incorporated in November 1996 and commenced banking operations in December 1998. The consolidated financial statements of the Company include the accounts of Texas Capital Bancshares, Inc. and its wholly owned subsidiary, Texas Capital Bank, National Association (the “Bank”). We serve the needs of commercial businesses and successful professionals and entrepreneurs located in Texas as well as operate several lines of business serving a regional and national clientèle of commercial borrowers. We are primarily a secured lender, with our greatest concentration of loans in Texas.

Basis of Presentation

Our accounting and reporting policies conform to accounting principles generally accepted in the United States (“GAAP”) and to generally accepted practices within the banking industry. Certain prior period balances have been reclassified to conform to the current period presentation. In that regard, ASU 2016-09, "Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting," ("ASU 2016-09") became effective for us on January 1, 2017. ASU 2016-09 requires that excess tax benefits and deficiencies be recognized as a component of income taxes within the income statement. Additionally, ASU 2016-09 requires that all income tax-related cash flows resulting from share-based payments be reported as operating activities in the statement of cash flows. Previously, income tax benefits at award settlement were reported as a reduction to operating cash flows and an increase to financing cash flows to the extent that those benefits exceeded the income tax benefits reported in earnings during the award's vesting period. We have elected to apply that change in cash flow presentation on a prospective basis. ASU 2016-09 also requires that companies make an accounting policy election regarding forfeitures, to either estimate the number of awards that are expected to vest or account for them when they occur. We have elected to recognize forfeitures as they occur. The impact of this change and that of the remaining provisions of ASU 2016-09 did not have a significant impact on our financial statements.

The consolidated interim financial statements have been prepared without audit. Certain information and footnote disclosures presented in accordance with GAAP have been condensed or omitted. In the opinion of management, the interim financial statements include all normal and recurring adjustments and the disclosures made are adequate to make the interim financial information not misleading. The consolidated financial statements have been prepared in accordance with GAAP for interim financial information and the instructions to Form 10-Q adopted by the Securities and Exchange Commission (“SEC”). Accordingly, the financial statements do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with our consolidated financial statements, and notes thereto, for the year ended December 31, 2016, included in our Annual Report on Form 10-K filed with the SEC on February 17, 2017 (the “2016 Form 10-K”). Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period.

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. Actual results could differ from those estimates. The allowance for loan losses, the fair value of stock-based compensation awards, the fair values of financial instruments and the status of contingencies are particularly susceptible to significant change.

7

(2) EARNINGS PER COMMON SHARE

The following table presents the computation of basic and diluted earnings per share (in thousands except per share data):

	Three months ended   March 31,
	2017		2016
Numerator:
Net income	$	42,542	$	25,128
Preferred stock dividends	2,438		2,438
Net income available to common stockholders	$	40,104	22,690
Denominator:
Denominator for basic earnings per share— weighted average shares	49,535,959		45,888,735
Effect of employee stock-based awards(1)	260,947		117,372
Effect of warrants to purchase common stock	437,324		348,271
Denominator for dilutive earnings per share—adjusted weighted average shares and assumed conversions	50,234,230		46,354,378
Basic earnings per common share	$	0.81	$	0.49
Diluted earnings per common share	$	0.80	$	0.49

(1) SARs and RSUs outstanding of 3,000 at March 31, 2017 and 308,972 at March 31, 2016 have not been included in diluted earnings per share because to do so would have been anti-dilutive for the periods presented.

(3) SECURITIES

The following is a summary of available-for-sale securities (in thousands):

	March 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale securities:
U.S. Treasuries	$	16,688	$	—	$	(5	)	$	16,683
Residential mortgage-backed securities	13,449		927		—			14,376
Equity securities(1)	11,424		101		(381		)	11,144
	$	41,561	$	1,028	$	(386	)	$	42,203
	December 31, 2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale securities:
Residential mortgage-backed securities	$	14,680	$	972	$	—		$	15,652
Municipals	275		—		—			275
Equity securities(1)	9,280		27		(360		)	8,947
	$	24,235	$	999	$	(360	)	$	24,874

(1) Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.

The amortized cost and estimated fair value of available-for-sale securities are presented below by contractual maturity (in thousands, except percentage data):

8

	March 31, 2017
	Less Than One Year			After One Through Five Years			After Five Through Ten Years			After Ten Years			Total
Available-for-sale:
U.S. Treasuries:
Amortized cost	$	16,688		$	—		$	—		$	—		$	16,688
Estimated fair value	16,683			—			—			—			16,683
Weighted average yield(3)	0.53		%	—		%	—		%	—		%	0.53		%
Residential mortgage-backed securities:(1)
Amortized cost	47			1,522			2,925			8,955			13,449
Estimated fair value	47			1,572			3,253			9,504			14,376
Weighted average yield(3)	5.25		%	4.69		%	5.55		%	2.85		%	3.65		%
Equity securities:(4)
Amortized cost	11,424			—			—			—			11,424
Estimated fair value	11,144			—			—			—			11,144
Total available-for-sale securities:
Amortized cost													$	41,561
Estimated fair value													$	42,203

	December 31, 2016
	Less Than One Year			After One Through Five Years			After Five Through Ten Years			After Ten Years			Total
Available-for-sale:
Residential mortgage-backed securities:(1)
Amortized cost	$	9		$	2,047		$	3,147		$	9,477		$	14,680
Estimated fair value	9			2,104			3,495			10,044			15,652
Weighted average yield(3)	5.50		%	4.70		%	5.55		%	2.84		%	3.68		%
Municipals:(2)
Amortized cost	275			—			—			—			275
Estimated fair value	275			—			—			—			275
Weighted average yield(3)	5.61		%	—		%	—		%	—		%	5.61		%
Equity securities:(4)
Amortized cost	9,280			—			—			—			9,280
Estimated fair value	8,947			—			—			—			8,947
Total available-for-sale securities:
Amortized cost													$	24,235
Estimated fair value													$	24,874

(1) Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

(2) Yields have been adjusted to a tax equivalent basis assuming a 35% federal tax rate.

(3) Yields are calculated based on amortized cost.

(4) These equity securities do not have a stated maturity.

At March 31, 2017, securities with carrying values of $3.6 million and $9.4 million were pledged to secure certain deposits and repurchase agreements, respectively.

The following table discloses, as of March 31, 2017 and December 31, 2016, our investment securities that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 or more months (in thousands):

9

March 31, 2017	Less Than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
U.S. Treasuries	$	16,683	$	(5	)	$	—	$	—		$	16,683	$	(5	)
Equity securities	1,015		(6		)	6,125		(375		)	7,140		(381		)
	$	17,698	$	(11	)	$	6,125	$	(375	)	$	23,823	$	(386	)
December 31, 2016	Less Than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Equity securities	$	1,015	$	(6	)	$	6,146	$	(354	)	$	7,161	$	(360	)

At March 31, 2017, we owned five securities in an unrealized loss position, three of which are U.S. Treasury securities which are subject to interest rate volatility. We do not intend to sell the investments and it is not more likely than not that we will be required to sell the investments before recovery of their amortized cost bases. The remaining two are publicly traded equity funds and are subject to market pricing volatility. We do not believe these unrealized losses are “other-than-temporary”. We have evaluated the near-term prospects of the investments in relation to the severity and duration of the impairment and based on that evaluation have the ability and intent to hold the investments until recovery of fair value.

10

(4) LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR LOAN LOSSES

At March 31, 2017 and December 31, 2016, loans held for investment were as follows (in thousands):

	March 31, 2017			December 31, 2016
Commercial	$	7,480,485		$	7,291,545
Mortgage finance	3,371,598			4,497,338
Construction	2,108,611			2,098,706
Real estate	3,563,136			3,462,203
Consumer	36,259			34,587
Leases	186,113			185,529
Gross loans held for investment	16,746,202			17,569,908
Deferred income (net of direct origination costs)	(75,686		)	(71,559		)
Allowance for loan losses	(172,013		)	(168,126		)
Total loans held for investment	$	16,498,503		$	17,330,223

Commercial Loans and Leases. Our commercial loan portfolio is comprised of lines of credit for working capital and term loans and leases to finance equipment and other business assets. Our energy production loans are generally collateralized with proven reserves based on appropriate valuation standards and take into account the risk of oil and gas price volatility. Our commercial loans and leases are underwritten after carefully evaluating and understanding the borrower’s ability to operate profitably. Our underwriting standards are designed to promote relationship banking rather than to make loans on a transaction basis. Our lines of credit typically are limited to a percentage of the value of the assets securing the line. Lines of credit and term loans typically are reviewed annually, or more frequently, as needed, and are supported by accounts receivable, inventory, equipment and other assets of our clients’ businesses.

Mortgage Finance Loans. Our mortgage finance loans consist of ownership interests purchased in single-family residential mortgages funded through our mortgage finance group. These loans are typically held on our balance sheet for 10 to 20 days. We have agreements with mortgage lenders and purchase interests in individual loans they originate. All loans are underwritten consistent with established programs for permanent financing with financially sound investors. Substantially all loans are conforming loans. Balances as of March 31, 2017 and December 31, 2016 are stated net of $230.5 million and $839.0 million participations sold, respectively.

Construction Loans. Our construction loan portfolio consists primarily of single- and multi-family residential properties and commercial projects used in manufacturing, warehousing, service or retail businesses. Our construction loans generally have terms of one to three years. We typically make construction loans to developers, builders and contractors that have an established record of successful project completion and loan repayment and have a substantial equity investment in the borrowers. Loan amounts are derived primarily from the Bank's evaluation of expected cash flows available to service debt from stabilized projects under hypothetically stressed conditions. Construction loans are also based in part upon estimates of costs and value associated with the completed project. Sources of repayment for these types of loans may be pre-committed permanent loans from other lenders, sales of developed property, or an interim loan commitment from us until permanent financing is obtained. The nature of these loans makes ultimate repayment sensitive to overall economic conditions. Borrowers may not be able to correct conditions of default in loans, increasing risk of exposure to classification, non-performing status, reserve allocation and actual credit loss and foreclosure. These loans typically have floating rates and commitment fees.

Real Estate Loans. A portion of our real estate loan portfolio is comprised of loans secured by properties other than market risk or investment-type real estate. Market risk loans are real estate loans where the primary source of repayment is expected to come from the sale, permanent financing or lease of the real property collateral. We generally provide temporary financing for commercial and residential property. These loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Our real estate loans generally have maximum terms of five to seven years, and we provide loans with both floating and fixed rates. We generally avoid long-term loans for commercial real estate held for investment. Real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy. Appraised values may be highly variable due to market conditions and the impact of the inability of potential purchasers and lessees to obtain financing and a lack of transactions at comparable values.

11

At March 31, 2017 and December 31, 2016, we had a blanket floating lien on certain real estate-secured loans, mortgage finance loans and certain securities used as collateral for Federal Home Loan Bank (“FHLB”) borrowings.

Summary of Loan Loss Experience

The allowance for loan losses is comprised of specific reserves for impaired loans and an additional qualitative reserve based on our estimate of losses inherent in the portfolio at the balance sheet date, but not yet identified with specified loans. We consider the allowance at March 31, 2017 to be appropriate, given management's assessment of losses inherent in the portfolio as of the evaluation date, the significant growth in the loan and lease portfolio, current economic conditions in our market areas and other factors.

The following tables summarize the credit risk profile of our loan portfolio by internally assigned grades and non-accrual status as of March 31, 2017 and December 31, 2016 (in thousands):

March 31, 2017
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Grade:
Pass	$	7,161,580	$	3,371,598	$	2,106,255	$	3,528,210	$	35,554	$	182,869	$	16,386,066
Special mention	51,723		—		2,356		12,904		370		3,161		70,514
Substandard-accruing	125,095		—		—		17,843		135		—		143,073
Non-accrual	142,087		—		—		4,179		200		83		146,549
Total loans held for investment	$	7,480,485	$	3,371,598	$	2,108,611	$	3,563,136	$	36,259	$	186,113	$	16,746,202
December 31, 2016
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Grade:
Pass	$	6,941,310	$	4,497,338	$	2,074,859	$	3,430,346	$	34,249	$	181,914	$	17,160,016
Special mention	69,447		—		10,901		21,932		—		3,532		105,812
Substandard-accruing	115,848		—		12,787		7,516		138		—		136,289
Non-accrual	164,940		—		159		2,409		200		83		167,791
Total loans held for investment	$	7,291,545	$	4,497,338	$	2,098,706	$	3,462,203	$	34,587	$	185,529	$	17,569,908

12

The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2017 and 2016. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.

March 31, 2017
(in thousands)	Commercial		Mortgage Finance		Construction			Real Estate			Consumer			Leases			Additional Qualitative Reserve			Total
Beginning balance	$	128,768	$	—	$	13,144		$	19,149		$	241		$	1,124		$	5,700		$	168,126
Provision for loan losses	8,147		—		(124		)	3,270			(31		)	325			(2,012		)	9,575
Charge-offs	9,233		—		—			—			—			—			—			9,233
Recoveries	3,381		—		101			50			5			8			—			3,545
Net charge-offs (recoveries)	5,852		—		(101		)	(50		)	(5		)	(8		)	—			5,688
Ending balance	$	131,063	$	—	$	13,121		$	22,469		$	215		$	1,457		$	3,688		$	172,013
Period end amount allocated to:
Loans individually evaluated for impairment	$	34,595	$	—	$	—		$	195		$	30		$	13		$	—		$	34,833
Loans collectively evaluated for impairment	96,468		—		13,121			22,274			185			1,444			3,688			137,180
Ending balance	$	131,063	$	—	$	13,121		$	22,469		$	215		$	1,457		$	3,688		$	172,013
March 31, 2016
(in thousands)	Commercial		Mortgage Finance		Construction			Real Estate			Consumer			Leases			Additional Qualitative Reserve			Total
Beginning balance	$	112,446	$	—	$	6,836		$	13,381		$	338		$	3,931		$	4,179		$	141,111
Provision for loan losses	26,581		—		1,050			1,134			(15		)	(2,435		)	2,480			28,795
Charge-offs	8,496		—		—			—			—			—			—			8,496
Recoveries	1,040		—		—			8			7			45			—			1,100
Net charge-offs (recoveries)	7,456		—		—			(8		)	(7		)	(45		)	—			7,396
Ending balance	$	131,571	$	—	$	7,886		$	14,523		$	330		$	1,541		$	6,659		$	162,510
Period end amount allocated to:
Loans individually evaluated for impairment	$	31,415	$	—	$	—		$	1,183		$	—		$	51		$	—		$	32,649
Loans collectively evaluated for impairment	100,156		—		7,886			13,340			330			1,490			6,659			129,861
Ending balance	$	131,571	$	—	$	7,886		$	14,523		$	330		$	1,541		$	6,659		$	162,510

The table below presents the activity in the portion of the allowance for credit losses related to losses on unfunded commitments for the three months ended March 31, 2017 and 2016 (in thousands). This liability is recorded in other liabilities in the consolidated balance sheet.

	Three months ended March 31,
	2017			2016
Beginning balance	$	11,422		$	9,011
Provision for off-balance sheet credit losses	(575		)	1,205
Ending balance	$	10,847		$	10,216

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We have traditionally maintained an additional qualitative reserve component to compensate for the uncertainty and complexity in estimating loan and lease losses including factors and conditions that may not be fully reflected in the determination and application of the allowance allocation percentages. We believe the level of additional qualitative reserve at March 31, 2017 is warranted due to the continued uncertain economic environment which has produced losses, including those resulting from borrowers' misstatement of financial information or inaccurate certification of collateral values. Such losses are not necessarily correlated with historical loss trends or general economic conditions. Our methodology used to calculate the allowance considers historical losses; however, the historical loss rates for specific product types or credit risk grades may not fully incorporate the effects of continued weakness in the economy and continued volatility in the energy sector.

Our recorded investment in loans as of March 31, 2017, December 31, 2016 and March 31, 2016 related to each balance in the allowance for loan losses by portfolio segment and disaggregated on the basis of our impairment methodology was as follows (in thousands):

March 31, 2017
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	143,632	$	—	$	—	$	5,512	$	200	$	83	$	149,427
Loans collectively evaluated for impairment	7,336,853		3,371,598		2,108,611		3,557,624		36,059		186,030		16,596,775
Total	$	7,480,485	$	3,371,598	$	2,108,611	$	3,563,136	$	36,259	$	186,113	$	16,746,202
December 31, 2016
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	166,669	$	—	$	159	$	3,751	$	200	$	83	$	170,862
Loans collectively evaluated for impairment	7,124,876		4,497,338		2,098,547		3,458,452		34,387		185,446		17,399,046
Total	$	7,291,545	$	4,497,338	$	2,098,706	$	3,462,203	$	34,587	$	185,529	$	17,569,908
March 31, 2016
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	167,832	$	—	$	—	$	8,397	$	—	$	343	$	176,572
Loans collectively evaluated for impairment	6,721,967		4,981,304		1,958,370		3,128,584		26,439		104,117		16,920,781
Total	$	6,889,799	$	4,981,304	$	1,958,370	$	3,136,981	$	26,439	$	104,460	$	17,097,353

Generally we place loans on non-accrual when there is a clear indication that the borrower’s cash flow may not be sufficient to meet payments as they become due, which is generally when a loan is 90 days past due. When a loan is placed on non-accrual status, all previously accrued and unpaid interest is reversed. Interest income is subsequently recognized on a cash basis as long as the remaining unpaid principal amount of the loan is deemed to be fully collectible. If collectability is questionable, then cash payments are applied to principal. As of March 31, 2017, none of our non-accrual loans were earning on a cash basis compared to $811,000 at December 31, 2016. A loan is placed back on accrual status when both principal and interest are current and it is probable that we will be able to collect all amounts due (both principal and interest) according to the terms of the loan agreement.

14

A loan held for investment is considered impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due (both principal and interest) according to the terms of the original loan agreement. In accordance with ASC 310 Receivables, we have also included all restructured and formerly restructured loans in our impaired loan totals. The following tables detail our impaired loans, by portfolio class, as of March 31, 2017 and December 31, 2016 (in thousands):

March 31, 2017
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial
Business loans	$	25,149	$	30,093	$	—	$	24,295	$	—
Energy	39,050		39,306		—		44,185		—
Construction
Market risk	—		—		—		—		—
Real estate
Market risk	—		—		—		—		—
Commercial	2,618		2,618		—		2,261		—
Secured by 1-4 family	—		—		—		—		—
Consumer	—		—		—		—		—
Leases	—		—		—		—		—
Total impaired loans with no allowance recorded	$	66,817	$	72,017	$	—	$	70,741	$	—
With an allowance recorded:
Commercial
Business loans	$	26,146	$	26,146	$	8,378	$	22,917	$	—
Energy	53,287		71,555		26,217		67,592		6
Construction
Market risk	—		—		—		106		—
Real estate
Market risk	1,333		1,333		29		1,339		—
Commercial	—		—		—		—		—
Secured by 1-4 family	1,561		1,561		166		738		—
Consumer	200		200		30		200		—
Leases	83		83		13		83		—
Total impaired loans with an allowance recorded	$	82,610	$	100,878	$	34,833	$	92,975	$	6
Combined:
Commercial
Business loans	$	51,295	$	56,239	$	8,378	$	47,212	$	—
Energy	92,337		110,861		26,217		111,777		6
Construction
Market risk	—		—		—		106		—
Real estate
Market risk	1,333		1,333		29		1,339		—
Commercial	2,618		2,618		—		2,261		—
Secured by 1-4 family	1,561		1,561		166		738		—
Consumer	200		200		30		200		—
Leases	83		83		13		83		—
Total impaired loans	$	149,427	$	172,895	$	34,833	$	163,716	$	6

15

December 31, 2016
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial
Business loans	$	23,868	$	27,992	$	—	$	12,361	$	—
Energy	46,753		54,522		—		54,075		—
Construction
Market risk	—		—		—		2,778		—
Real estate
Market risk	—		—		—		—		—
Commercial	2,083		2,083		—		4,483		38
Secured by 1-4 family	—		—		—		—		—
Consumer	—		—		—		—		—
Leases	—		—		—		403		—
Total impaired loans with no allowance recorded	$	72,704	$	84,597	$	—	$	74,100	$	38
With an allowance recorded:
Commercial
Business loans	$	21,303	$	21,303	$	7,055	$	22,277	$	—
Energy	74,745		88,987		27,350		73,637		24
Construction
Market risk	159		159		24		53		—
Real estate
Market risk	1,342		1,342		20		3,000		—
Commercial	—		—		—		—		—
Secured by 1-4 family	326		326		113		435		—
Consumer	200		200		30		67		—
Leases	83		83		13		548		—
Total impaired loans with an allowance recorded	$	98,158	$	112,400	$	34,605	$	100,017	$	24
Combined:
Commercial
Business loans	$	45,171	$	49,295	$	7,055	$	34,638	$	—
Energy	121,498		143,509		27,350		127,712		24
Construction
Market risk	159		159		24		2,831		—
Real estate
Market risk	1,342		1,342		20		3,000		—
Commercial	2,083		2,083		—		4,483		38
Secured by 1-4 family	326		326		113		435		—
Consumer	200		200		30		67		—
Leases	83		83		13		951		—
Total impaired loans	$	170,862	$	196,997	$	34,605	$	174,117	$	62

16

Average impaired loans outstanding during the three months ended March 31, 2017 and 2016 totaled $163.7 million and $181.1 million, respectively.

The table below provides an age analysis of our loans held for investment as of March 31, 2017 (in thousands):

	30-59 Days Past Due		60-89 Days Past Due		Greater Than 90 Days and Accruing(1)		Total Past Due		Non-accrual		Current		Total
Commercial
Business loans	$	30,716	$	6,923	$	7,359	$	44,998	$	49,750	$	6,484,545	$	6,579,293
Energy	—		—		—		—		92,337		808,855		901,192
Mortgage finance loans	—		—		—		—		—		3,371,598		3,371,598
Construction
Market risk	2,553		—		—		2,553		—		2,081,308		2,083,861
Secured by 1-4 family	—		—		—		—		—		24,750		24,750
Real estate
Market risk	112		—		1,333		1,445		—		2,652,833		2,654,278
Commercial	—		274		—		274		2,618		689,414		692,306
Secured by 1-4 family	4,225		—		107		4,332		1,561		210,659		216,552
Consumer	360		98		—		458		200		35,601		36,259
Leases	—		—		—		—		83		186,030		186,113
Total loans held for investment	$	37,966	$	7,295	$	8,799	$	54,060	$	146,549	$	16,545,593	$	16,746,202

(1) Loans past due 90 days and still accruing includes premium finance loans of $5.1 million. These loans are generally secured by obligations of insurance carriers to refund premiums on canceled insurance policies. The refund of premiums from the insurance carriers can take 180 days or longer from the cancellation date.

Restructured loans are loans on which, due to the borrower’s financial difficulties, we have granted a concession that we would not otherwise consider for borrowers of similar credit quality. This may include a transfer of real estate or other assets from the borrower, a modification of loan terms, or a combination of the two. Modifications of terms that could potentially qualify as a restructuring include reduction of the contractual interest rate, extension of the maturity date at a contractual interest rate lower than the current rate for new debt with similar risk, a reduction of the face amount of debt or forgiveness of either principal or accrued interest. At March 31, 2017 and December 31, 2016, we did not have any loans considered restructured that were not on non-accrual. Of the non-accrual loans at March 31, 2017 and December 31, 2016, $18.5 million and $18.1 million, respectively, met the criteria for restructured. These loans had no unfunded commitments at their respective balance sheet dates. A loan continues to qualify as restructured until a consistent payment history or change in borrower’s financial condition has been evidenced, generally over no less than twelve months. Assuming that the restructuring agreement specifies an interest rate at the time of the restructuring that is greater than or equal to the rate that we are willing to accept for a new extension of credit with comparable risk, then the loan no longer has to be considered a restructuring if it is in compliance with the modified terms in calendar years after the year of the restructure.

17

The following table summarizes, for the three months ended March 31, 2017 and 2016, loans that were restructured during 2017 and 2016 (in thousands):

March 31, 2017
	Number of Restructured Loans	Pre-Restructuring Outstanding Recorded Investment		Post-Restructuring Outstanding Recorded Investment
Energy loans	1	$	1,070	$	1,070
Commercial business loans	1	$	599	$	599
Total new restructured loans in 2017	2	$	1,669	$	1,669
March 31, 2016
	Number of Restructured Loans	Pre-Restructuring Outstanding Recorded Investment		Post-Restructuring Outstanding Recorded Investment
Energy loans	2	$	14,235	$	14,235
Total new restructured loans in 2016	2	$	14,235	$	14,235

The restructured loans generally include terms to temporarily place loans on interest only, extend the payment terms or reduce the interest rate. We did not forgive any principal on the above loans. The restructuring of the loans did not have a significant impact on our allowance for loan losses at March 31, 2017 or 2016.

The following table provides information on how restructured loans were modified during the three months ended March 31, 2017 and 2016 (in thousands):

	Three months ended March 31,
	2017		2016
Extended maturity	$	1,070	$	—
Adjusted payment schedule	—		12,916
Combination of maturity extension and payment schedule adjustment	—		1,319
Other	599		—
Total	$	1,669	$	14,235

As of March 31, 2017 and 2016, we did not have any loans that were restructured within the last 12 months that subsequently defaulted.

(5) OREO AND VALUATION ALLOWANCE FOR LOSSES ON OREO

The table below presents a summary of the activity related to OREO (in thousands):

	Three months ended March 31,
	2017			2016
Beginning balance	$	18,961		$	278
Additions	—			17,398
Sales	(128		)	(91		)
Valuation allowance for OREO	—			—
Direct write-downs	—			—
Ending balance	$	18,833		$	17,585

When foreclosure occurs, the acquired asset is recorded at fair value less selling costs, generally based on appraised value, which may result in partial charge-off of the loan. Subsequent write-downs required for declines in value are recorded through a valuation allowance or taken directly to the assets, charged to other non-interest expense. We did not record a valuation allowance during the three months endedMarch 31, 2017 and 2016.

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(6) CERTAIN TRANSFERS OF FINANCIAL ASSETS

Through our Mortgage Correspondent Aggregation ("MCA") business, we commit to purchase residential mortgage loans from independent correspondent lenders and deliver those loans into the secondary market via whole loan sales to independent third parties or in securitization transactions to Ginnie Mae and government sponsored entities ("GSEs") such as Fannie Mae and Freddie Mac. We have elected to carry these loans at fair value based on sales commitments and market quotes. Changes in the fair value of the loans held for sale are included in other non-interest income.

Residential mortgage loans are subject to both credit and interest rate risk. Credit risk is managed through underwriting policies and procedures, including collateral requirements, which are generally accepted by the secondary loan markets. Exposure to interest rate fluctuations is partially managed through forward sales contracts, which set the price for loans that will be delivered in the next 60 to 90 days.

The table below presents the unpaid principal balance of loans held for sale and related fair values at March 31, 2017 and December 31, 2016 (in thousands):

	March 31, 2017		December 31, 2016
Unpaid principal balance	$	880,156	$	980,414
Fair value	884,647		968,929
Fair value over/(under) unpaid principal balance	$	4,491	$	(11,485	)

No loans held for sale were 90 days or more past due or on non-accrual as of March 31, 2017 and December 31, 2016.

The table below presents a reconciliation of the changes in loans held for sale for the three months endedMarch 31, 2017 and 2016 (in thousands):

	Three months ended March 31,
	2017			2016
Beginning balance	$	968,929		$	86,075
Loans purchased	1,299,542			364,919
Payments and loans sold	(1,399,800		)	(357,018		)
Change in fair value	15,976			726
Ending balance	$	884,647		$	94,702

We generally retain the right to service the loans sold, creating mortgage servicing rights ("MSRs") which are recorded as assets on our balance sheet. A summary of MSR activity for the three months endedMarch 31, 2017 and 2016 is as follows (in thousands):

	Three months ended March 31,
	2017			2016
Servicing asset:
Balance, beginning of year(1)	$	28,536		$	423
Capitalized servicing rights	18,094			3,903
Amortization	(1,104		)	(40		)
Balance, end of period	$	45,526		$	4,286
Valuation allowance:
Balance, beginning of year	$	—		$	—
Increase in valuation allowance	—			33
Balance, end of period	$	—		$	33
Servicing asset, net(1)	$	45,526		$	4,253
Fair value	$	48,013		$	4,253

(1) MSRs are reported on the consolidated balance sheets at lower of cost or market.

19

At March 31, 2017 and December 31, 2016, our servicing portfolio of residential mortgage loans sold included 13,955 and 8,618 loans, respectively, with an outstanding principal balance of $3.5 billion and $2.2 billion, respectively. In connection with the servicing of these loans, we maintain escrow funds for taxes and insurance in the name of investors, as well as collections in transit to investors. These escrow funds are segregated and held in separate non-interest-bearing accounts at the Bank. These deposits, included in total non-interest-bearing deposits on the consolidated balance sheets, were $31.4 million at March 31, 2017 and $21.0 million at December 31, 2016.

The estimated fair value of the MSR assets is obtained from an independent third party on a quarterly basis. MSRs do not trade in an active, open market with readily observable prices; as such, the fair value of MSRs is determined using a discounted cash flow model to calculate the present value of the estimated future net servicing income. The assumptions utilized in the discounted cash flow model are based on market data for comparable collateral, where available. Each quarter, management and the independent third party discuss the key assumptions used in the discounted cash flow model and make adjustments as necessary to estimate the fair value of the MSRs. As of March 31, 2017 and December 31, 2016, management used the following assumptions to determine the fair value of MSRs:

	March 31, 2017		December 31, 2016
Average discount rates	9.91	%	9.96	%
Expected prepayment speeds	8.10	%	7.91	%
Weighted average life, in years	7.9		8.0

A sensitivity analysis of changes in the fair value of our MSR portfolio resulting from certain key assumptions is presented in the following table (in thousands):

	March 31, 2017			December 31, 2016
50 bp adverse change in prepayment speed	$	(4,471	)	$	(2,833	)
100 bp adverse change in prepayment speed	(10,835		)	(6,812		)

These sensitivities are hypothetical and should be evaluated with care. The effect on fair value of a 10% variation in assumptions generally cannot be determined because the relationship of the change in assumptions to the fair value may not be linear. Additionally, the impact of a variation in a particular assumption on the fair value is calculated while holding other assumptions constant. In reality, changes in one factor may lead to changes in other factors, which could impact the above hypothetical effects. Also, a positive change in the above assumptions would not necessarily correlate with the corresponding decrease in the net carrying amount of the excess spread financing.

In conjunction with the sale and securitization of loans held for sale, we may be exposed to liability resulting from recourse agreements and repurchase agreements. If it is determined subsequent to our sale of a loan that the loan sold is in breach of the representations or warranties made in the applicable sale agreement, we may have an obligation to either (a) repurchase the loan for the unpaid principal balance, accrued interest and related advances, (b) indemnify the purchaser against any loss it suffers or (c) make the purchaser whole for the economic benefits of the loan.

Our repurchase, indemnification and make whole obligations vary based upon the terms of the applicable agreements, the nature of the asserted breach and the status of the mortgage loan at the time a claim is made. We establish reserves for estimated losses of this nature inherent in the origination of mortgage loans by estimating the losses inherent in the population of all loans sold based on trends in claims and actual loss severities experienced. The reserve includes accruals for probable contingent losses in addition to those identified in the pipeline of claims received. The estimation process is designed to include amounts based on any actual losses experienced from actual repurchase activity.

Because the MCA business commenced in late 2015, we have limited historical data to support the establishment of a reserve. The baseline for the repurchase reserve uses historical loss factors obtained from industry data that are applied to loan pools originated and sold during the three months endedMarch 31, 2017 and 2016. The historical industry data loss factors and experienced losses are accumulated for each sale vintage (year loan was sold) and applied to more recent sale vintages to estimate inherent losses not yet realized. Our estimated exposure related to these loans was $971,000 at March 31, 2017 and $178,000 at March 31, 2016 and is recorded in other liabilities in the consolidated balance sheets. We had no losses due to repurchase, indemnification or make-whole obligations during the three months endedMarch 31, 2017 and 2016.

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(7) FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK

The Bank is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit that involve varying degrees of credit risk in excess of the amount recognized in the consolidated balance sheets. The Bank’s exposure to credit loss in the event of non-performance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual amount of these instruments. The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The amount of collateral obtained, if deemed necessary, is based on management’s credit evaluation of the borrower.

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Bank evaluates each customer’s credit-worthiness on a case-by-case basis.

Standby letters of credit are conditional commitments issued by the Bank to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers.

The table below summarizes our off-balance sheet financial instruments whose contract amounts represented credit risk (in thousands):

	March 31, 2017		December 31, 2016
Commitments to extend credit	$	5,829,713	$	5,704,381
Standby letters of credit	171,451		171,266

(8) REGULATORY MATTERS

The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory (and possibly additional discretionary) actions by regulators that, if undertaken, could have a direct material effect on the Company’s and the Bank’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of the Company’s and the Bank’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The Company’s and the Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

The Basel III regulatory capital framework (the "Basel III Capital Rules") adopted by U.S. federal regulatory authorities, among other things, (i) establish the capital measure called "Common Equity Tier 1" ("CET1"), (ii) specify that Tier 1 capital consist of CET1 and "Additional Tier 1 Capital" instruments meeting stated requirements, (iii) define CET1 narrowly by requiring that most deductions/adjustments to regulatory capital measures be made to CET1 and not to the other components of capital and (iv) set forth the acceptable scope of deductions/adjustments to the specified capital measures. The Basel III Capital Rules became effective for us on January 1, 2015 with certain transition provisions fully phased in on January 1, 2019.

Additionally, the Basel III Capital Rules require that we maintain a capital conservation buffer with respect to each of the CET1, Tier 1 and total capital to risk-weighted assets, which provides for capital levels that exceed the minimum risk-based capital adequacy requirements. The capital conservation buffer is subject to a three year phase-in period that began on January 1, 2016 and will be fully phased in on January 1, 2019 at 2.5%. The required phase-in capital conservation buffer during 2017 is 1.25% and was 0.625% during 2016. A financial institution with a conservation buffer of less than the required amount is subject to limitations on capital distributions, including dividend payments and stock repurchases, and certain discretionary bonus payments to executive officers.

Quantitative measures established by these regulations to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios of CET1, Tier 1 and total capital to risk-weighted assets, and of Tier 1 capital to average assets, each as defined in the regulations. Management believes, as of March 31, 2017, that the Company and the Bank met all capital adequacy requirements to which they are subject.

Financial institutions are categorized as well capitalized or adequately capitalized, based on minimum total risk-based capital, Tier 1 risk-based capital, CET1 and Tier 1 leverage ratios. As shown in the table below, the Company’s capital ratios exceeded the regulatory definition of adequately capitalized as of March 31, 2017, and December 31, 2016. Based upon the information

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in its most recently filed call report, the Bank met the capital ratios necessary to be well capitalized. The regulatory authorities can apply changes in classification of assets and such changes may retroactively subject the Company to changes in capital ratios. Any such changes could result in reducing one or more capital ratios below well-capitalized status. In addition, a change may result in imposition of additional assessments by the FDIC or could result in regulatory actions that could have a material adverse effect on our financial condition and results of operations.

Because our Bank had less than $15.0 billion in total consolidated assets as of December 31, 2009, we are allowed to continue to classify our trust preferred securities, all of which were issued prior to May 19, 2010, as Tier 1 capital.

The table below summarizes our actual and required capital ratios under the Basel III Capital Rules:

	Actual				Minimum Capital Required - Basel III Phase-In Schedule				Minimum capital Required - Basel III Fully Phased-In				Required to be Considered Well Capitalized
	Capital Amount		Ratio		Capital Amount		Ratio		Capital Amount		Ratio		Capital Amount	Ratio
As of March 31, 2017:
CET1
Company	$	1,881,329	9.61	%	$	1,125,456	5.75	%	$	1,370,121	7.00	%	N/A	N/A
Bank	1,778,152		9.09	%	1,125,405		5.75	%	1,370,058		7.00	%	1,272,197	6.50	%
Total capital (to risk-weighted assets)
Company	2,603,536		13.30	%	1,810,516		9.25	%	2,055,181		10.50	%	N/A	N/A
Bank	2,341,922		11.97	%	1,810,434		9.25	%	2,055,088		10.50	%	1,957,226	10.00	%
Tier 1 capital (to risk-weighted assets)
Company	2,139,542		10.93	%	1,419,053		7.25	%	1,663,718		8.50	%	N/A	N/A
Bank	1,936,365		9.89	%	1,418,989		7.25	%	1,663,642		8.50	%	1,565,781	8.00	%
Tier 1 capital (to average assets)(1)
Company	2,139,542		10.27	%	833,706		4.00	%	833,706		4.00	%	N/A	N/A
Bank	1,936,365		9.29	%	833,510		4.00	%	833,510		4.00	%	1,041,888	5.00	%
As of December 31, 2016:
CET1
Company	$	1,841,219	8.97	%	$	1,052,205	5.125	%	$	1,437,159	7.00	%	N/A	N/A
Bank	1,735,496		8.45	%	1,051,989		5.125	%	1,436,863		7.00	%	1,334,244	6.50	%
Total capital (to risk-weighted assets)
Company	2,561,663		12.48	%	1,770,766		8.625	%	2,155,715		10.50	%	N/A	N/A
Bank	2,297,528		11.19	%	1,770,421		8.625	%	2,155,295		10.50	%	2,052,683	10.00	%
Tier 1 capital (to risk-weighted assets)
Company	2,101,071		10.23	%	1,360,154		6.625	%	1,745,103		8.50	%	N/A	N/A
Bank	1,895,348		9.23	%	1,359,888		6.625	%	1,744,762		8.50	%	1,642,147	8.00	%
Tier 1 capital (to average assets)(1)
Company	2,101,071		9.34	%	900,268		4.00	%	900,268		4.00	%	N/A	N/A
Bank	1,895,348		8.42	%	900,070		4.00	%	900,070		4.00	%	1,125,087	5.00	%

(1) The Tier 1 capital ratio (to average assets) is not impacted by the Basel III Capital Rules; however, it should be noted that the Federal Reserve Board and the FDIC may require the Company and the Bank, respectively, to maintain a Tier 1 capital ratio (to average assets) above the required minimum.

Our mortgage finance loan volumes can increase significantly at month-end, causing a meaningful difference between ending balance and average balance for any period. At March 31, 2017, our total mortgage finance loans were $3.4 billion compared to the average for the quarter ended March 31, 2017 of $2.8 billion. As CET1, Tier 1 and total capital ratios are calculated using quarter-end risk-weighted assets and our mortgage finance loans are 100% risk-weighted, the quarter-end fluctuation in these balances can significantly impact our reported ratios. We manage capital allocated to mortgage finance loans based on changing

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trends in average balances, as well as the inherent risk associated with the assets which implies a risk weight that is significantly different than the regulatory risk weight, and do not believe that the quarter-end balance is representative of risk characteristics that would justify higher capital allocations. However, we continue to monitor our capital allocation to confirm that all capital levels remain above well-capitalized levels.

Dividends that may be paid by subsidiary banks are routinely restricted by various regulatory authorities. The amount that can be paid in any calendar year without prior approval of the Bank’s regulatory agencies cannot exceed the lesser of the net profits (as defined) for that year plus the net profits for the preceding two calendar years, or retained earnings. The Basel III Capital Rules further limit the amount of dividends that may be paid by our Bank. No dividends were declared or paid on common stock during the three months endedMarch 31, 2017 or 2016.

(9) STOCK-BASED COMPENSATION

We have long-term incentive plans under which stock-based compensation awards are granted to employees and directors by the board of directors, or its designated committee. Grants are subject to vesting requirements and may include, among other things, nonqualified stock options, stock appreciation rights ("SARs"), restricted stock units ("RSUs"), restricted stock and performance units, or any combination thereof. There are 2,550,000 total shares authorized under the plans.

Stock-based compensation expense presented below consists of awards granted from 2011 through March 31, 2017.

	Three months ended March 31,
(in thousands)	2017		2016
Stock-settled awards:
SARs	$	72	$	82
RSUs	1,593		1,048
Restricted stock	4		2
Cash-settled performance units	2,890		(673		)
Total	$	4,559	$	459

(in thousands)	March 31, 2017
Unrecognized compensation expense related to unvested stock-settled awards	$	20,117
Weighted average period over which expense is expected to be recognized, in years	3.2

(10) FAIR VALUE DISCLOSURES

ASC 820, Fair Value Measurements and Disclosures (“ASC 820”), defines fair value, establishes a framework for measuring fair value under GAAP and requires enhanced disclosures about fair value measurements. Fair value is defined under ASC 820 as the price that would be received for an asset or paid to transfer a liability (an exit price) in the principal market for the asset or liability in an orderly transaction between market participants on the measurement date.

We determine the fair market values of our assets and liabilities measured at fair value on a recurring and nonrecurring basis using the fair value hierarchy as prescribed in ASC 820. The standard describes three levels of inputs that may be used to measure fair value as provided below.

Level 1 Quoted prices in active markets for identical assets or liabilities. This category includes the assets and liabilities related to our non-qualified deferred compensation plan where values are based on quoted market prices for identical equity securities in an active market.

Level 2 Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 assets include U.S. Treasuries, U.S. government and agency mortgage-backed debt securities, municipal bonds, and Community Reinvestment Act funds. This category also includes loans held for sale and derivative assets and liabilities where values are obtained from independent pricing services.

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Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair values requires significant management judgment or estimation. This category includes impaired loans and OREO where collateral values have been based on third party appraisals; comparative sales data typically used in appraisals may be unavailable or more subjective with respect to some asset classes due to lack of market activity.

Assets and liabilities measured at fair value at March 31, 2017 and December 31, 2016 are as follows (in thousands):

	Fair Value Measurements Using
March 31, 2017	Level 1		Level 2		Level 3
Available-for-sale securities:(1)
U.S. Treasuries	$	—	$	16,683	$	—
Residential mortgage-backed securities	—		14,376		—
Equity securities(2)	4,004		7,140		—
Loans held for sale (3)	—		884,647		—
Loans held for investment(4) (6)	—		—		50,780
OREO(5) (6)	—		—		18,833
Derivative assets(7)	—		24,245		—
Derivative liabilities(7)	—		27,697		—
Non-qualified deferred compensation plan liabilities (8)	4,040		—		—
December 31, 2016
Available-for-sale securities:(1)
Residential mortgage-backed securities	$	—	$	15,652	$	—
Municipals	—		275		—
Equity securities(2)	1,786		7,161		—
Loans held for sale(3)	—		968,929		—
Loans held for investment(4) (6)	—		—		52,323
OREO(5) (6)	—		—		18,961
Derivative assets(7)	—		37,878		—
Derivative liabilities(7)	—		26,240		—
Non-qualified deferred compensation plan liabilities (8)	1,811		—		—

(1) Securities are measured at fair value on a recurring basis, generally monthly.

(2) Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.

(3) Loans held for sale are measured at fair value on a recurring basis, generally monthly.

(4) Includes impaired loans that have been measured for impairment at the fair value of the loan’s collateral.

(5) OREO is transferred from loans to OREO at fair value less selling costs.

(6) Loans held for investment and OREO are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions.

(7) Derivative assets and liabilities are measured at fair value on a recurring basis, generally quarterly.

(8) Non-qualified deferred compensation plan liabilities represent the fair value of the obligation to the employee, which corresponds to the fair value of the invested assets, and are measured at fair value on a recurring basis, generally monthly.

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Level 3 Valuations

Financial instruments are considered Level 3 when their values are determined using pricing models, discounted cash flow methodologies or similar techniques and at least one significant model assumption or input is unobservable. Level 3 financial instruments include those for which the determination of fair value requires significant management judgment or estimation. Currently, we measure the fair value for certain loans and OREO on a nonrecurring basis as described below.

Loans held for investment

At March 31, 2017 and December 31, 2016, certain impaired loans held for investment were reported at fair value through a specific allocation of the allowance for loan losses based upon the fair value of the underlying collateral. The $50.8 million fair value of loans held for investment at March 31, 2017 reported above includes impaired loans held for investment with a carrying value of $70.1 million that were reduced by specific allowance allocations totaling $19.3 million based on collateral valuations utilizing Level 3 valuation inputs. The $52.3 million fair value of loans held for investment at December 31, 2016 reported fair value above includes impaired loans with a carrying value of $74.1 million that were reduced by specific valuation allowance allocations totaling $21.8 million based on collateral valuations utilizing Level 3 valuation inputs. Fair values were based on third party appraisals.

OREO

Certain foreclosed assets, upon initial recognition, are recorded at fair value less estimated selling costs. At March 31, 2017 and December 31, 2016, OREO had a carrying value of $18.8 million and $19.0 million, respectively, with no specific valuation allowance. The fair value of OREO was computed based on third party appraisals, which are Level 3 valuation inputs.

Fair Value of Financial Instruments

GAAP requires disclosure of fair value information about financial instruments, whether or not recognized on the balance sheet, for which it is practical to estimate that value. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. This disclosure does not and is not intended to represent the fair value of the Company.

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A summary of the carrying amounts and estimated fair values of financial instruments is as follows (in thousands):

	March 31, 2017				December 31, 2016
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Financial assets:
Level 1 inputs:
Cash and cash equivalents	$	2,920,934	$	2,920,934	$	2,839,352	$	2,839,352
Securities, available-for-sale	4,004		4,004		1,786		1,786
Level 2 inputs:
Securities, available-for-sale	38,199		38,199		23,088		23,088
Loans held for sale	884,647		884,647		968,929		968,929
Derivative assets	24,245		24,245		37,878		37,878
Level 3 inputs:
Loans held for investment, net	16,498,503		16,507,087		17,330,223		17,347,199
Financial liabilities:
Level 2 inputs:
Federal funds purchased	134,539		134,539		101,800		101,800
Customer repurchase agreements	7,295		7,295		7,775		7,775
Other borrowings	1,500,000		1,500,000		2,000,000		2,000,000
Subordinated notes	281,134		330,552		281,044		304,672
Derivative liabilities	27,697		27,697		26,240		26,240
Level 3 inputs:
Deposits	16,605,380		16,604,650		17,016,831		17,017,221
Trust preferred subordinated debentures	113,406		113,406		113,406		113,406

The following methods and assumptions were used by the Company in estimating its fair value disclosures for financial instruments:

Cash and cash equivalents

The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents approximate their fair value, and these financial instruments are characterized as Level 1 assets in the fair value hierarchy.

Securities available-for-sale

Within the securities available-for-sale portfolio, we hold equity securities related to our non-qualified deferred compensation plan which are valued using quoted market prices for identical equity securities in an active market. These financial instruments are classified as Level 1 assets in the fair value hierarchy. The fair value of the remaining investment portfolio is based on prices obtained from independent pricing services which are based on quoted market prices for the same or similar securities, and these financial instruments are characterized as Level 2 assets in the fair value hierarchy. We have obtained documentation from the primary pricing service we use about their processes and controls over pricing. In addition, on a quarterly basis we independently verify the prices that we receive from the service provider using two additional independent pricing sources. Any significant differences are investigated and resolved.

Loans held for sale

Fair value for loans held for sale is derived from quoted market prices for similar loans, and these financial instruments are characterized as Level 2 assets in the fair value hierarchy.

Loans held for investment, net

Loans held for investment are characterized as Level 3 assets in the fair value hierarchy. For variable-rate loans held for investment that reprice frequently with no significant change in credit risk, fair values are generally based on carrying values. The fair value for all other loans held for investment is estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. The carrying amount of accrued interest approximates its fair value.

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Derivatives

The estimated fair value of the interest rate swaps and caps is obtained from independent pricing services based on quoted market prices for similar derivative contracts and these financial instruments are characterized as Level 2 assets and liabilities in the fair value hierarchy. On a quarterly basis, we independently verify the fair value using an additional independent pricing source. Any significant differences are investigated and resolved. The derivative instruments related to the loans held for sale portfolio include loan purchase commitments and forward sales commitments. Loan purchase commitments are valued based upon the fair value of the underlying mortgage loans to be purchased, which is based on observable market data for similar loans. Forward sales commitments are valued based upon the quoted market prices from brokers. As such, these loan purchase commitments and forward sales commitments are classified as Level 2 assets or liabilitites in the fair value hierarchy.

Deposits

Deposits are characterized as Level 3 liabilities in the fair value hierarchy. The carrying amounts for variable-rate money market accounts approximate their fair value.The fair values of fixed-term certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities.

Federal funds purchased, customer repurchase agreements, other borrowings, subordinated notes and trust preferred subordinated debentures

The carrying value reported in the consolidated balance sheets for Federal funds purchased, customer repurchase agreements and other short-term, floating rate borrowings approximates their fair value, and these financial instruments are characterized as Level 2 liabilities in the fair value hierarchy. The fair value of any fixed rate short-term borrowings and trust preferred subordinated debentures are estimated using a discounted cash flow calculation that applies interest rates currently being offered on similar borrowings, and these financial instruments are characterized as Level 3 liabilities in the fair value hierarchy. The subordinated notes are publicly, though infrequently, traded and are valued based on market prices, and are characterized as Level 2 liabilities in the fair value hierarchy.

(11) DERIVATIVE FINANCIAL INSTRUMENTS

The fair value of derivative positions outstanding is included in accrued interest receivable and other assets and other liabilities in the accompanying consolidated balance sheets on a net basis when a right of offset exists, based on transactions with a single counterparty that are subject to a legally enforceable master netting agreement.

During the three months ended March 31, 2017 and 2016, we entered into certain interest rate derivative positions that were not designated as hedging instruments. These derivative positions relate to transactions in which we enter into an interest rate swap, cap and/or floor with a customer while at the same time entering into an offsetting interest rate swap, cap and/or floor with another financial institution. In connection with each swap transaction, we agree to pay interest to the customer on a notional amount at a variable interest rate and receive interest from the customer on a similar notional amount at a fixed interest rate. At the same time, we agree to pay another financial institution the same fixed interest rate on the same notional amount and receive the same variable interest rate on the same notional amount. The transaction allows our customer to effectively convert a variable rate loan to a fixed rate. Because we act as an intermediary for our customer, changes in the fair value of the underlying derivative contracts substantially offset each other and do not have a material impact on our results of operations.

During the three months ended March 31, 2017 and 2016, we entered into loan purchase commitment contracts with mortgage originators to purchase residential mortgage loans at a future date, as well as forward sales commitment contracts to sell residential mortgage loans at a future date.

The notional amounts and estimated fair values of interest rate derivative positions outstanding at March 31, 2017 and December 31, 2016 are presented in the following tables (in thousands):

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	March 31, 2017								December 31, 2016
	Estimated Fair Value								Estimated Fair Value
	Notional Amount		Asset Derivative			Liability Derivative			Notional Amount		Asset Derivative			Liability Derivative
Non-hedging interest rate derivatives:
Financial institution counterparties:
Commercial loan/lease interest rate swaps	$	1,256,666	$	2,398		$	22,489		$	1,144,367	$	1,754		$	25,421
Commercial loan/lease interest rate caps	231,125		639			—			210,996		819			—
Customer counterparties:
Commercial loan/lease interest rate swaps	1,256,666		22,489			2,398			1,144,367		25,421			1,754
Commercial loan/lease interest rate caps	231,125		—			639			210,996		—			819
Economic hedging interest rate derivatives:
Loan purchase commitments	222,492		1,117			—			237,805		1,351			—
Forward sales commitments	1,030,393		—			4,569			1,218,000		10,287			—
Gross derivatives			26,643			30,095					39,632			27,994
Offsetting derivative assets/liabilities			(2,398		)	(2,398		)			(1,754		)	(1,754		)
Net derivatives included in the consolidated balance sheets			$	24,245		$	27,697				$	37,878		$	26,240

The weighted average received and paid interest rates for interest rate swaps outstanding at March 31, 2017 and December 31, 2016 were as follows:

	March 31, 2017 Weighted Average Interest Rate				December 31, 2016 Weighted Average Interest Rate
	Received		Paid		Received		Paid
Non-hedging interest rate swaps	3.40	%	4.61	%	3.17	%	4.58	%

The weighted average strike rate for outstanding interest rate caps was 2.44% at March 31, 2017 and 2.45% at December 31, 2016.

Our credit exposure on derivative instruments is limited to the net favorable value and interest payments by each counterparty. In such cases collateral may be required from the counterparties involved if the net value of the derivative instruments exceed a nominal amount considered to be immaterial. Our credit exposure, net of any collateral pledged, was approximately $24.2 million at March 31, 2017 and approximately $37.9 million at December 31, 2016, which primarily relates to Bank customers. Collateral levels are monitored and adjusted on a regular basis for changes in interest rate swap and cap values. At March 31, 2017, we had $26.5 million in cash collateral pledged for these derivatives, of which $24.1 million was included in interest-bearing deposits and $2.4 million was included in accrued interest receivable and other assets. At December 31, 2016, we had $24.8 million in cash collateral pledged for these derivatives, all of which was included in interest-bearing deposits.

(12) NEW ACCOUNTING PRONOUNCEMENTS

ASU 2016-15 "Statement of Cash Flows (Topic 230)" ("ASU 2016-15") is intended to reduce the diversity in practice around how certain transactions are classified within the statement of cash flows. ASU 2016-15 is effective for public companies for annual periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted with retrospective application. We are evaluating the impact adoption of ASU 2016-15 will have on our consolidated financial statements.

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ASU 2016-13 "Financial Instruments - Credit Losses (Topic 326)" ("ASU 2016-13") requires an entity to utilize a new impairment model known as the current expected credit loss ("CECL") model to estimate its lifetime "expected credit loss" and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. ASU 2016-13 also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. ASU 2016-13 is effective for public companies for annual periods beginning after December 15, 2019, including interim periods within those fiscal years. Entities will apply the standard's provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. We are currently evaluating the impact adoption of ASU 2016-13 will have on our consolidated financial statements and disclosures.

ASU 2016-02 "Leases (Topic 842)" ("ASU 2016-02") requires that lessees and lessors recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing arrangements. ASU 2016-02 is effective for public companies for annual periods beginning after December 15, 2018, including interim periods within those fiscal years. We have not yet selected a transition method as we are in the process of determining the effect of the standard on our consolidated financial statements and disclosures.

ASU 2014-09 "Revenue from Contracts with Customers (Topic 606)" ("ASU 2014-09") implements a common revenue standard that clarifies the principles for recognizing revenue. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 establishes a five-step model which entities must follow to recognize revenue and removes inconsistencies and weaknesses in existing guidance. ASU 2014-09 was originally effective for annual and interim periods beginning after December 15, 2016; however, the FASB issued ASU 2015-14 - "Revenue from Contracts with Customers (Topic 606) - Deferral of the Effective Date" which deferred the effective date of ASU 2014-09 by one year to annual and interim periods beginning after December 15, 2017. The guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, which comprises a significant portion of our revenue stream. Adoption of ASU 2014-09 may require us to amend how we recognize certain recurring revenue streams related to trust fees, which are recorded in non-interest income; however, we do not expect adoption of ASU 2014-09 to have a material impact on our consolidated financial statements and disclosures. We plan to adopt the revenue recognition guidance in the first quarter of 2018 with a cumulative effect adjustment to opening retained earnings, if management deems such adjustment significant. Our implementation efforts to date include identification of revenue streams within the scope of the guidance, and we have begun review of revenue contracts.

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QUARTERLY FINANCIAL SUMMARIES – UNAUDITED

Consolidated Daily Average Balances, Average Yields and Rates

(In thousands)

	For the three months ended   March 31, 2017						For the three months ended   March 31, 2016
	Average Balance		Revenue/ Expense(1)		Yield/ Rate		Average Balance		Revenue/ Expense(1)		Yield/ Rate
Assets
Securities – taxable	$	31,905	$	224	2.84	%	$	28,343	$	254	3.60	%
Securities – non-taxable(2)	224		3		4.85	%	759		11		5.70	%
Federal funds sold and securities purchased under resale agreements	276,910		530		0.78	%	304,425		372		0.49	%
Deposits in other banks	3,312,256		6,567		0.80	%	2,649,164		3,285		0.50	%
Loans held for sale	1,064,322		9,535		3.63	%	126,084		1,094		0.03
Loans held for investment, mortgage finance	2,757,566		23,105		3.40	%	3,724,513		29,037		3.14	%
Loans held for investment	12,980,544		145,018		4.53	%	11,910,788		125,754		4.25	%
Less reserve for loan losses	169,318		—		—		141,125		—		—
Loans held for investment, net	15,568,792		168,123		4.38	%	15,494,176		154,791		4.02	%
Total earning assets	20,254,409		184,982		3.70	%	18,602,951		159,807		3.46	%
Cash and other assets	606,762						506,025
Total assets	$	20,861,171					$	19,108,976
Liabilities and Stockholders’ Equity
Transaction deposits	$	2,008,401	$	2,193	0.44	%	$	2,004,817	$	1,381	0.28	%
Savings deposits	6,989,748		10,483		0.61	%	6,335,425		6,714		0.43	%
Time deposits	427,770		617		0.59	%	509,762		727		0.57	%
Total interest-bearing deposits	9,425,919		13,293		0.57	%	8,850,004		8,822		0.40	%
Other borrowings	1,333,685		2,273		0.69	%	1,346,998		1,292		0.39	%
Subordinated notes	281,076		4,191		6.05	%	280,713		4,191		6.00	%
Trust preferred subordinated debentures	113,406		830		2.97	%	113,406		716		2.54	%
Total interest-bearing liabilities	11,154,086		20,587		0.75	%	10,591,121		15,021		0.57	%
Demand deposits	7,547,338						6,730,586
Other liabilities	117,877						148,418
Stockholders’ equity	2,041,870						1,638,851
Total liabilities and stockholders’ equity	$	20,861,171					$	19,108,976
Net interest income(2)			$	164,395					$	144,786
Net interest margin					3.29	%					3.13	%
Net interest spread					2.95	%					2.89	%
Loan spread(3)					3.99	%					3.77	%

(1) The loan averages include non-accrual loans and are stated net of unearned income.

(2) Taxable equivalent rates used where applicable.

(3) Yield on loans, net of reserves, less funding cost including all deposits and borrowed funds.

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ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward-Looking Statements

Certain statements and financial analysis contained in this report that are not historical facts are forward-looking statements made pursuant to the safe harbor provisions of federal securities laws. Forward-looking statements may also be contained in our future filings with SEC, in press releases and in oral and written statements made by us or with our approval that are not statements of historical fact. These forward-looking statements are based on our beliefs, assumptions and expectations of our future performance taking into account all information currently available to us. Words such as “believes,” “expects,” “estimates,” “anticipates,” “plans,” “goals,” “objectives,” “expects,” “intends,” “seeks,” “likely,” “targeted,” “continue,” “remain,” “will,” “should,” “may” and other similar expressions are intended to identify forward-looking statements but are not the exclusive means of identifying such statements.

Forward-looking statements may include, among other things, statements about the credit quality of our loan portfolio, economic conditions, including the continued impact on our customers from declines and volatility in oil and gas prices, expectations regarding rates of default or loan losses, volatility in the mortgage industry, our business strategies and our expectations about future financial performance, future growth and earnings, the appropriateness of our allowance for loan losses and provision for credit losses, the impact of increased regulatory requirements on our business, increased competition, interest rate risk, new lines of business, new product or service offerings and new technologies.

Forward-looking statements are subject to various risks and uncertainties, which change over time, are based on management’s expectations and assumptions at the time the statements are made and are not guarantees of future results. Important factors that could cause actual results to differ materially from the forward-looking statements include, but are not limited to, the following:

• Deterioration of the credit quality of our loan portfolio or declines in the value of collateral related to external factors such as commodity prices, real estate values or interest rates, increased default rates and loan losses or adverse changes in the industry concentrations of our loan portfolio.

• Changing economic conditions or other developments adversely affecting our commercial, entrepreneurial and professional customers.

• Changes in the value of commercial and residential real estate securing our loans or in the demand for credit to support the purchase and ownership of such assets.

• The failure to correctly assess and model the assumptions supporting our allowance for loan losses, causing it to become inadequate in the event of deteriorations in loan quality and increases in charge-offs.

• Changes in the U.S. economy in general or the Texas economy specifically resulting in deterioration of credit quality, increases in non-performing assets or charge-offs or reduced demand for credit or other financial services we offer, including the effects from declines in the level of drilling and production related to the continued volatility in oil and gas prices.

• Adverse changes in economic or market conditions, or our operating performance, which could cause access to capital market transactions and other sources of funding to become more difficult to obtain on terms and conditions that are acceptable to us.

• The inadequacy of our available funds to meet our deposit, debt and other obligations as they become due, or our failure to maintain our capital ratios as a result of adverse changes in our operating performance or financial condition, or changes in applicable regulations or regulator interpretation of regulations impacting our business or the characterization or risk weight of our assets.

• The failure to effectively balance our funding sources with cash demands by depositors and borrowers.

• The failure to manage our information systems risk or to prevent cyber-attacks against us or our third party vendors, or to manage risks from disruptions or security breaches affecting our third party vendors.

• The failure to effectively manage our interest rate risk resulting from unexpectedly large or sudden changes in interest rates or rate or maturity imbalances in our assets and liabilities, and potential adverse effects to our borrowers including their inability to repay loans with increased interest rates.

• Legislative and regulatory changes imposing further restrictions and costs on our business, a failure to remain well capitalized or well managed status or regulatory enforcement actions against us, and uncertainty related to future implementation and enforcement of regulatory requirements resulting from the current political environment.

• The failure to successfully execute our business strategy, which may include expanding into new markets, developing and launching new lines of business or new products and services within the expected timeframes and budgets or to

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successfully manage the risks related to the development and implementation of these new businesses, products or services.

• The failure to attract and retain key personnel or the loss of key individuals or groups of employees.

• Adverse changes in economic or business conditions that impact the financial markets or our customers.

• Structural changes in the markets for origination, sale and servicing of residential mortgages.

• Increased or more effective competition from banks and other financial service providers in our markets.

• Uncertainty in the pricing of mortgage loans that we purchase, and later sell or securitize, as well as competition for the MSRs related to these loans and related interest rate risk resulting from retaining MSRs, and the potential effects of higher interest rates on our MCA loan volumes.

• Material failures of our accounting estimates and risk management processes based on management judgment, or the supporting analytical and forecasting models.

• Failure of our risk management strategies and procedures, including failure or circumvention of our controls.

• Credit risk resulting from our exposure to counterparties.

• An increase in the incidence or severity of fraud, illegal payments, security breaches and other illegal acts impacting our Bank and our customers.

• The failure to maintain adequate regulatory capital to support our business.

• Unavailability of funds obtained from borrowing or capital transactions or from our Bank to fund our obligations.

• Incurrence of material costs and liabilities associated with legal and regulatory proceedings and related matters with respect to the financial services industry, including those directly involving us or our Bank.

• Environmental liability associated with properties related to our lending activities.

• Severe weather, natural disasters, acts of war or terrorism and other external events.

Actual outcomes and results may differ materially from what is expressed in our forward-looking statements and from our historical financial results due to the factors discussed elsewhere in this report or disclosed in our other SEC filings. Forward-looking statements included herein speak only as of the date hereof and should not be relied upon as representing our expectations or beliefs as of any date subsequent to the date of this report. Except as required by law, we undertake no obligation to revise any forward-looking statements contained in this report, whether as a result of new information, future events or otherwise. The factors discussed herein are not intended to be a complete summary of all risks and uncertainties that may affect our businesses. Though we strive to monitor and mitigate risk, we cannot anticipate all potential economic, operational and financial developments that may adversely impact our operations and our financial results. Forward-looking statements should not be viewed as predictions and should not be the primary basis upon which investors evaluate an investment in our securities.

Overview of Our Business Operations

We commenced our banking operations in December 1998. An important aspect of our growth strategy has been our ability to service and manage effectively a large number of loans and deposit accounts in multiple markets in Texas, as well as several lines of business serving a regional or national clientele of commercial borrowers. Accordingly, we have created an operations infrastructure sufficient to support our lending and banking operations that we continue to build out as needed to serve a larger customer base and specialized industries.

In the third quarter of 2015, we launched a correspondent lending program, MCA, to complement our warehouse lending program. Through our MCA program we commit to purchase residential mortgage loans from independent correspondent lenders and deliver those loans into the secondary market via whole loan sales to independent third parties or in securitization transactions to Ginnie Mae GSEs such as Fannie Mae and Freddie Mac. We retain the MSRs in some cases with the expectation that they will be sold from time to time. Once purchased, these loans are classified as held for sale and are carried at fair value pursuant to our election of the fair value option. At the commitment date, we enter into a corresponding forward sale commitment with a third party, typically a GSE, to deliver the loans to the third party within a specified timeframe. The estimated gain/loss for the entire transaction (from initial purchase commitment to final delivery of loans) is recorded as an asset or liability. Fair value is derived from observable current market prices, when available, and includes the fair value of the MSRs. At March 31, 2017 and December 31, 2016, we had $884.6 million and $968.9 million in loans held for sale related to MCA.

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Outstanding energy loans totaled $968.5 million, or approximately 5% of total loans, at March 31, 2017. Unfunded energy loan commitments decreased by $75.1 million to $455.7 million (47% of outstanding energy loans) at March 31, 2017 compared to $530.8 million at December 31, 2016. We experienced improvement in our energy portfolio in the first three months of 2017, recording $7.1 million in net charge-offs during the three months ended March 31, 2017 compared to $7.4 million for the same period in 2016. Energy non-accruals decreased to $100.9 million at March 31, 2017 compared to $121.5 million at December 31, 2016 and $141.3 at March 31, 2016. We continue to proactively manage our energy portfolio and overall credit quality, and we believe we are appropriately reserved against further energy-related losses.

The following discussion and analysis presents the significant factors affecting our financial condition as of March 31, 2017 and December 31, 2016 and results of operations for the three months in the periods ended March 31, 2017 and 2016. This discussion should be read in conjunction with our consolidated financial statements and notes to the financial statements appearing in Part I, Item 1 of this report.

Results of Operations

Summary of Performance

We reported net income of $42.5 million and net income available to common stockholders of $40.1 million, or $0.80 per diluted common share, for the first quarter of 2017 compared to net income of $25.1 million and net income available to common stockholders of $22.7 million, or $0.49 per diluted common share, for the first quarter of 2016. Return on average common equity (“ROE”) was 8.60% and return on average assets ("ROA") was 0.83% for the first quarter of 2017, compared to 6.13% and 0.53%, respectively, for the first quarter of 2016. The increase in ROE resulted from an increase in net revenue and lower provision for loan losses for the first quarter of 2017, offset by an increase in equity related to the fourth quarter 2016 common stock offering. ROA remains low as a result of higher liquidity assets. Average liquidity assets for the first quarter of 2017 totaled $3.6 billion, including $3.3 billion in deposits at the Federal Reserve Bank of Dallas, which had an average yield of 80 basis points, compared to $2.6 billion for the first quarter of 2016, which had an average yield of 50 basis points.

Net income increased $17.4 million, or 69%, for the three months ended March 31, 2017, as compared to the same period in 2016. The increase was primarily the result of an $18.6 million increase in net interest income, a $21.0 million decrease in the provision for credit losses and a $5.8 million increase in non-interest income, offset by a $19.3 million increase in non-interest expense and an $8.7 million increase in income tax expense.

Details of the changes in the various components of net income are discussed below.

Net Interest Income

Net interest income was $163.4 million for the first quarter of 2017, compared to $144.8 million for the first quarter of 2016. The increase was due to an increase in average earning assets of $1.7 billion as compared to the first quarter of 2016. The increase in average earning assets included a $938.2 million increase in average loans held for sale, a $635.6 million increase in average liquidity assets, a $74.6 million increase in average net loans held for investment and a $3.0 million increase in average securities. For the quarter ended March 31, 2017, average net loans held for investment, liquidity assets and loans held for sale represented approximately 77%, 18% and 5%, respectively, of average earning assets compared to approximately 83%, 16% and less than 1% for the same quarter of 2016.

Average interest-bearing liabilities for the quarter ended March 31, 2017 increased $563.0 million from the first quarter of 2016, which included a $575.9 million increase in average interest-bearing deposits offset by a $13.3 million decrease in other borrowings. Average demand deposits increased from $6.7 billion at March 31, 2016 to $7.5 billion at March 31, 2017. The average cost of total deposits and borrowed funds increased to 0.34% for the first quarter of 2017 compared to 0.24% for the same period of 2016. The cost of interest-bearing liabilities increased from 0.57% for the quarter ended March 31, 2016 to 0.75% for the same period of 2017.

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The following table (in thousands) presents changes in taxable-equivalent net interest income between the three month periods ended March 31, 2017 and March 31, 2016 and identifies the changes due to differences in the average volume of earning assets and interest-bearing liabilities and changes due to differences in the average interest rate on those assets and liabilities.

	Three months ended March 31, 2017/2016
	Net			Change Due To(1)
	Change			Volume			Yield/Rate
Interest income:
Securities(2)	$	(38	)	$	26		$	(64	)
Loans held for sale	8,441			8,074			367
Loans held for investment, mortgage finance loans	(5,932		)	(7,766		)	1,834
Loans held for investment	19,264			10,705			8,559
Federal funds sold	158			(32		)	190
Deposits in other banks	3,282			822			2,460
Total	25,175			11,829			13,346
Interest expense:
Transaction deposits	812			2			810
Savings deposits	3,769			689			3,080
Time deposits	(110		)	(135		)	25
Borrowed funds	981			(13		)	994
Long-term debt	114			—			114
Total	5,566			543			5,023
Net interest income	$	19,609		$	11,286		$	8,323

(1) Changes attributable to both volume and yield/rate are allocated to both volume and yield/rate on an equal basis.

(2) Taxable equivalent rates are used where applicable and assume a 35% tax rate.

Net interest margin, which is defined as the ratio of net interest income to average earning assets, was 3.29% for the first quarter of 2017 compared to 3.13% for the first quarter of 2016. The year-over-year increase was primarily due to the increase in interest rates and the higher yielding loan portfolio components, including loans held for investment, excluding mortgage finance, and loans held for sale. Funding costs, including demand deposits and borrowed funds, increased to 0.34% for the first quarter of 2017 compared to 0.24% for the first quarter of 2016. The spread on total earning assets, net of the cost of deposits and borrowed funds, was 3.36% for the first quarter of 2017 compared to 3.22% for the first quarter of 2016. The increase resulted primarily from the increase in interest rates and increased composition of higher yielding loan components of earning assets. Total funding costs, including all deposits, long-term debt and stockholders’ equity, increased to 0.40% for the first quarter of 2017 compared to 0.32% for the first quarter of 2016.

Non-interest Income

The components of non-interest income were as follows (in thousands):

	Three months ended March 31,
	2017		2016
Service charges on deposit accounts	$	3,045	$	2,110
Wealth management and trust fee income	1,357		813
Bank owned life insurance (BOLI) income	466		536
Brokered loan fees	5,678		4,645
Servicing related income	2,201		(55		)
Swap fees	1,803		307
Other	2,560		2,941
Total non-interest income	$	17,110	$	11,297

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Non-interest income increased $5.8 million during the three months ended March 31, 2017 compared to the same period of 2016. This increase was primarily due to a $2.2 million increase in servicing income during the three months ended March 31, 2017 compared to the same period of 2016 as a result of the increase in servicing assets primarily related to our MCA business. Swap fees increased $1.5 million during the three months ended March 31, 2017 compared to the same period of 2016. Swap fees relate to customer swap transactions and are received from the institution that is our counterparty on the transaction. These fees fluctuate from quarter to quarter based on the volume and size of transactions closed during the quarter. Brokered loan fees increased $1.0 million during the three months ended March 31, 2017 compared to the same period of 2016 as a result of an increase in MCA volumes. Service charges increased $935,000 during the three months ended March 31, 2017 compared to the same period of 2016 as a result of the increase in deposit balances and improved pricing of treasury services.

While management expects continued growth in certain components of non-interest income, the future rate of growth could be affected by increased competition from nationwide and regional financial institutions. In order to achieve growth in non-interest income, management from time to time evaluates new products, new lines of business and the expansion of existing lines of business. Any new product introduction or new market entry could place additional demands on capital and managerial resources.

Non-interest Expense

The components of non-interest expense were as follows (in thousands):

	Three months ended March 31,
	2017		2016
Salaries and employee benefits	$	63,003	$	51,372
Net occupancy expense	6,111		5,812
Marketing	4,950		3,908
Legal and professional	7,453		5,324
Communications and technology	6,506		6,217
FDIC insurance assessment	5,994		5,469
Allowance and other carrying costs for OREO
Servicing related expenses	1,750		73
Other(1)	10,327		8,645
Total non-interest expense	$	106,094	$	86,820

(1) Other expense includes such items as courier expenses, regulatory assessments other than FDIC insurance, due from bank charges and other general operating expenses, none of which account for 1% or more of total interest income and non-interest income.

Non-interest expense for the first quarter of 2017 increased $19.3 million, or 22%, to $106.1 million from $86.8 million in the first quarter of 2016. The increase is primarily attributable to an $11.6 million increase in salaries and employee benefits expense due to general business growth and continued build-out.

Marketing expense and legal and professional expense for the three months ended March 31, 2017 increased $1.0 million and $2.1 million, respectively, as a result of general business growth. Our legal and professional expense will continue to fluctuate from year to year and could increase in the future due to additional growth and as we respond to continued regulatory changes and execute strategic initiatives.

Servicing related expenses for the three months ended March 31, 2017 increased $1.7 million compared to the same quarter in 2016 as a result of the increase in capitalized servicing assets primarily related to our MCA business from March 31, 2016 to March 31, 2017.

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Analysis of Financial Condition

Loans Held for Investment

Loans were as follows as of the dates indicated (in thousands):

	March 31, 2017			December 31, 2016
Commercial	$	7,480,485		$	7,291,545
Mortgage finance	3,371,598			4,497,338
Construction	2,108,611			2,098,706
Real estate	3,563,136			3,462,203
Consumer	36,259			34,587
Leases	186,113			185,529
Gross loans held for investment	16,746,202			17,569,908
Deferred income (net of direct origination costs)	(75,686		)	(71,559		)
Allowance for loan losses	(172,013		)	(168,126		)
Total loans held for investment, net	$	16,498,503		$	17,330,223

Total loans held for investment net of allowance for loan losses at March 31, 2017 increased $831.7 million from December 31, 2016 to $16.5 billion. Our business plan focuses primarily on lending to middle market businesses and successful professionals and entrepreneurs, and as such, commercial, real estate and construction loans have comprised a majority of our loan portfolio. Consumer loans generally have represented 1% or less of the portfolio. Mortgage finance loans relate to our mortgage warehouse lending operations in which we invest in mortgage loan ownership interests that are typically sold within 10 to 20 days. Volumes fluctuate based on the level of market demand for the product and the number of days between purchase and sale of the loans as well as overall market interest rates and tend to peak at the end of each month.

We originate a substantial majority of all loans held for investment (excluding mortgage finance loans). We also participate in syndicated loan relationships, both as a participant and as an agent. As of March 31, 2017, we had $2.2 billion in syndicated loans, $599.0 million of which we administer as agent. All syndicated loans, whether we act as agent or participant, are underwritten to the same standards as all other loans we originate. As of March 31, 2017, $61.7 million of our syndicated loans were on non-accrual.

Portfolio Geographic Concentration

When considering our mortgage finance loans and other national lines of business, more than 50% of our loan exposure is outside of Texas and more than 50% of our deposits are sourced outside of Texas. However, as of March 31, 2017, a majority of our loans held for investment, excluding our mortgage finance loans and other national lines of business, were to businesses with headquarters and operations in Texas. This geographic concentration subjects the loan portfolio to the general economic conditions within this area. We also make loans to these customers that are secured by assets located outside of Texas. The risks created by this concentration have been considered by management in the determination of the adequacy of the allowance for loan losses.

Summary of Loan Loss Experience

The provision for credit losses, which includes a provision for losses on unfunded commitments, is a charge to earnings to maintain the allowance for loan losses at a level consistent with management’s assessment of the collectability of the loan portfolio in light of current economic conditions and market trends. We recorded a provision for credit losses of $9.0 million during the first quarter of 2017 compared to $30.0 million in the first quarter of 2016 and $9.0 million in the fourth quarter of 2016. The decrease in provision recorded during the first quarter of 2017 compared to the same period in 2016 was primarily related to improvements in the composition of our pass-rated and classified loan portfolios, including energy loans.

The allowance for credit losses, which includes a liability for losses on unfunded commitments, totaled $182.9 million at March 31, 2017, $179.5 million at December 31, 2016 and $172.7 million at March 31, 2016. The combined allowance percentage decreased slightly to 1.37% at March 31, 2017 from 1.38% and 1.43% at December 31, 2016 and March 31, 2016, respectively.

The overall allowance for loan losses results from consistent application of our loan loss reserve methodology. At March 31, 2017, we believe the allowance is sufficient to cover all inherent losses in the portfolio and has been derived from consistent application of our methodology. Should any of the factors considered by management in evaluating the appropriateness of the

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allowance for loan losses change, our estimate of inherent losses in the portfolio could also change, which would affect the level of future provisions for loan losses.

Activity in the allowance for loan losses is presented in the following table (in thousands, except percentage and multiple data):

	Three months ended   March 31, 2017			Year ended December 31, 2016			Three months ended   March 31, 2016
Allowance for loan losses:
Beginning balance	$	168,126		$	141,111		$	141,111
Loans charged-off:
Commercial	9,233			56,558			8,496
Real estate	—			528			—
Consumer	—			47			—
Leases	—			—			—
Total charge-offs	9,233			57,133			8,496
Recoveries:
Commercial	3,381			9,364			1,040
Construction	101			34			—
Real estate	50			63			8
Consumer	5			21			7
Leases	8			77			45
Total recoveries	3,545			9,559			1,100
Net charge-offs	5,688			47,574			7,396
Provision for loan losses	9,575			74,589			28,795
Ending balance	$	172,013		$	168,126		$	162,510
Allowance for off-balance sheet credit losses:
Beginning balance	$	11,422		$	9,011		$	9,011
Provision for off-balance sheet credit losses	(575		)	2,411			1,205
Ending balance	$	10,847		$	11,422		$	10,216
Total allowance for credit losses	$	182,860		$	179,548		$	172,726
Total provision for credit losses	$	9,000		$	77,000		$	30,000
Allowance for loan losses to LHI	1.03		%	0.96		%	0.95		%
Allowance for loan losses to LHI excluding mortgage finance loans	1.29		%	1.29		%	1.35		%
Net charge-offs to average LHI(1)	0.15		%	0.29		%	0.19		%
Net charge-offs to average LHI excluding mortgage finance loans(1)	0.18		%	0.38		%	0.25		%
Total provision for credit losses to average LHI	0.23		%	0.46		%	0.77		%
Total provision for credit losses to average LHI excluding mortgage finance loans	0.28		%	0.62		%	1.01		%
Recoveries to total charge-offs	38.39		%	16.73		%	12.95		%
Allowance for off-balance sheet credit losses to off-balance sheet credit commitments	0.18		%	0.19		%	0.18		%
Combined allowance for credit losses to LHI	1.10		%	1.03		%	1.01		%
Combined allowance for credit losses to LHI excluding mortgage finance loans	1.37		%	1.38		%	1.43		%
Non-performing assets:
Non-accrual loans(2)	$	146,549		$	167,791		$	173,156
OREO(3)	18,833			18,961			17,585
Total	$	165,382		$	186,752		$	190,741
Restructured loans	$	—		$	—		$	249
Loans past due 90 days and still accruing(4)	8,799			10,729			10,100
Allowance for loan losses to non-accrual loans	1.2x			1.0x			.9x

(1) Interim period ratios are annualized.

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(2) As of March 31, 2017, December 31, 2016 and March 31, 2016, non-accrual loans included $18.5 million, $18.1 million and $37.9 million, respectively, in loans that met the criteria for restructured.

(3) We did not have a valuation allowance recorded against the OREO balance at March 31, 2017, December 31, 2016 or March 31, 2016.

(4) At March 31, 2017, December 31, 2016 and March 31, 2016, loans past due 90 days and still accruing include premium finance loans of $5.1 million, $6.8 million and $6.1 million, respectively.

Non-performing Assets

Non-performing assets include non-accrual loans and leases and repossessed assets. The table below summarizes our non-accrual loans by type and by type of property securing the credit and OREO (in thousands):

	March 31, 2017		December 31, 2016		March 31, 2016
Non-accrual loans(1)
Commercial
Oil and gas properties	$	88,448	$	115,599	$	140,467
Assets of the borrowers	19,352		18,592		20,819
Inventory	30,582		27,630		2,069
Other	3,705		3,119		2,742
Total commercial	142,087		164,940		166,097
Construction
Commercial buildings	—		—		—
Unimproved land	—		—		—
Other	—		159		—
Total construction	—		159		—
Real estate
Commercial property	2,618		2,083		2,825
Unimproved land and/or developed residential lots	—		—		3,544
Single family residences	1,241		—		—
Farm land	—		326		—
Other	320		—		347
Total real estate	4,179		2,409		6,716
Consumer	200		200		—
Leases	83		83		343
Total non-accrual loans	146,549		167,791		173,156
Repossessed assets:
OREO(2)	18,833		18,961		17,585
Other repossessed assets	—		—		—
Total non-performing assets	$	165,382	$	186,752	$	190,741

(1) As of March 31, 2017, December 31, 2016 and March 31, 2016, non-accrual loans included $18.5 million, $18.1 million and $37.9 million, respectively, in loans that met the criteria for restructured.

(2) We did not have a valuation allowance recorded against the OREO balance at March 31, 2017, December 31, 2016 or March 31, 2016.

Total non-performing assets at March 31, 2017 decreased $25.4 million from March 31, 2016 and $21.4 million from December 31, 2016. We experienced a significant decrease in levels of non-performing assets during the three months endedMarch 31, 2017 compared to the same period in 2016, primarily related to improvements in our energy portfolio. Energy non-performing assets totaled $100.9 million at March 31, 2017 compared to $141.3 million at March 31, 2016 and $121.5 million at December 31, 2016. Our provision for credit losses decreased as a result of these improvements, as well as improvements in

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the composition of our pass-rated and classified loan portfolios. This resulted in a decrease in the reserve for loan losses as a percent of loans excluding mortgage finance loans for March 31, 2017 compared to December 31, 2016 and March 31, 2016.

Potential problem loans consist of loans that are performing in accordance with contractual terms but for which we have concerns about the borrower’s ability to comply with repayment terms because of the borrower’s potential financial difficulties. We monitor these loans closely and review their performance on a regular basis. At March 31, 2017, we had $17.1 million in loans of this type, compared to $19.3 million at December 31, 2016, which were not included in either non-accrual or 90 days past due categories.

Loans Held for Sale

We launched our MCA business in the third quarter of 2015. In that business, we commit to purchase residential mortgage loans from independent correspondent lenders and deliver those loans into the secondary market via whole loan sales to independent third parties or in securitization transactions to Ginnie Mae and GSEs such as Fannie Mae and Freddie Mac. For additional information on our loans held for sale portfolio, see Note 6 - Certain Transfers of Financial Assets in the accompanying notes to the consolidated financial statements included elsewhere in this report.

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Liquidity and Capital Resources

In general terms, liquidity is a measurement of our ability to meet our cash needs. Our objective in managing our liquidity is to maintain our ability to meet loan commitments, purchase securities or repay deposits and other liabilities in accordance with their terms, without an adverse impact on our current or future earnings. Our liquidity strategy is guided by policies, formulated and monitored by our senior management and our Balance Sheet Management Committee (“BSMC”), which take into account the demonstrated marketability of assets, the sources and stability of our funding and the level of unfunded commitments. We regularly evaluate all of our various funding sources with an emphasis on accessibility, stability, reliability and cost effectiveness. For the year ended December 31, 2016 and for the three months ended March 31, 2017 our principal source of funding has been our customer deposits, supplemented by our short-term and long-term borrowings, primarily from Federal funds purchased and Federal Home Loan Bank ("FHLB") borrowings, which are generally used to fund mortgage finance assets.

Deposit growth and increases in borrowing capacity related to our mortgage finance loans have resulted in an increase in liquidity assets to $2.8 billion at March 31, 2017. The following table summarizes the growth in and composition of liquidity assets (in thousands):

	March 31, 2017			December 31, 2016			March 31, 2016
Federal funds sold and securities purchased under resale agreements	$	25,000		$	25,000		$	30,000
Interest-bearing deposits	2,779,921			2,700,645			2,614,418
Total liquidity assets	$	2,804,921		$	2,725,645		$	2,644,418
Total liquidity assets as a percent of:
Total loans held for investment, excluding mortgage finance loans	21.1		%	21.0		%	21.9		%
Total loans held for investment	16.8		%	15.6		%	15.5		%
Total earning assets	13.9		%	12.9		%	13.5		%
Total deposits	16.9		%	16.0		%	16.2		%

Our liquidity needs to support growth in loans held for investment have been fulfilled primarily through growth in our core customer deposits. Our goal is to obtain as much of our funding for loans held for investment and other earning assets as possible from deposits of these core customers. These deposits are generated principally through development of long-term relationships with customers, with a significant focus on treasury management products. In addition to deposits from our core customers, we also have access to deposits through brokered customer relationships. For regulatory purposes, these relationship brokered deposits are categorized as brokered deposits; however, since these deposits arise from a customer relationship, which involves extensive treasury services, we consider these deposits to be core deposits for our reporting purposes.

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We also have access to incremental deposits through brokered retail certificates of deposit, or CDs. These traditional brokered deposits are generally of short maturities, 30 to 90 days, and are used to fund temporary differences in the growth in loans balances, including growth in loans held for sale or other specific categories of loans as compared to customer deposits. The following table summarizes our period-end and average year-to-date core customer deposits, relationship brokered deposits and traditional brokered deposits (in millions):

	March 31, 2017			December 31, 2016			March 31, 2016
Deposits from core customers	$	14,992.0		$	15,141.6		$	14,768.7
Deposits from core customers as a percent of total deposits	90.3		%	89.0		%	90.6		%
Relationship brokered deposits	$	1,613.4		$	1,875.2		$	1,530.2
Relationship brokered deposits as a percent of total deposits	9.7		%	11.0		%	9.4		%
Traditional brokered deposits	$	—		$	—		$	—
Traditional brokered deposits as a percent of total deposits	—		%	—		%	—		%
Average deposits from core customers(1)	$	15,363.4		$	15,494.0		$	14,051.0
Average deposits from core customers as a percent of total quarterly average deposits(1)	90.5		%	90.0		%	90.2		%
Average relationship brokered deposits(1)	$	1,609.8		$	1,725.9		$	1,529.6
Average relationship brokered deposits as a percent of total quarterly average deposits(1)	9.5		%	10.0		%	9.8		%
Average traditional brokered deposits(1)	$	—		$	—		$	—
Average traditional brokered deposits as a percent of total quarterly average deposits(1)	—		%	—		%	—		%

(1) Annual averages presented for December 31, 2016.

We have access to sources of traditional brokered deposits that we estimate to be $3.5 billion. Based on our internal guidelines, we have chosen to limit our use of these sources to a lesser amount. Customer deposits (total deposits, including relationship brokered deposits, minus brokered CDs) at March 31, 2017 decreased by $411.1 million from December 31, 2016 and increased $306.5 million from March 31, 2016.

We have short-term borrowing sources available to supplement deposits and meet our funding needs. Such borrowings are generally used to fund our mortgage finance assets, due to their liquidity, short duration and interest spreads available. These borrowing sources include Federal funds purchased from our downstream correspondent bank relationships (which consist of banks that are smaller than our bank) and from our upstream correspondent bank relationships (which consist of banks that are larger than our bank), customer repurchase agreements, treasury, tax and loan notes and advances from the FHLB and the Federal Reserve. The following table summarizes our short-term borrowings as of March 31, 2017 (in thousands):

Federal funds purchased	$	134,539
Repurchase agreements	7,295
FHLB borrowings	1,500,000
Line of credit	—
Total short-term borrowings	$	1,641,834
Maximum short-term borrowings outstanding at any month-end during 2016	$	2,018,527

The following table summarizes our other borrowing capacities in excess of balances outstanding at March 31, 2017 (in thousands):

FHLB borrowing capacity relating to loans	$	2,413,774
FHLB borrowing capacity relating to securities	446
Total FHLB borrowing capacity	$	2,414,220
Unused Federal funds lines available from commercial banks	$	1,128,000

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The following table summarizes our long-term borrowings as of March 31, 2017 (in thousands):

Subordinated notes	$	281,134
Trust preferred subordinated debentures	113,406
Total long-term borrowings	$	394,540

At March 31, 2017, we had a revolving, non-amortizing line of credit with a maximum availability of $130.0 million. This line of credit matures on December 19, 2017. The loan proceeds may be used for general corporate purposes including funding regulatory capital infusions into the Bank. The loan agreement contains customary financial covenants and restrictions. As of March 31, 2017 and December 31, 2016, there were no borrowings outstanding.

Our equity capital, including $150 million in preferred stock, averaged $1.7 billion for the three months ended March 31, 2017, as compared to $1.5 billion for the same period in 2016. We have not paid any cash dividends on our common stock since we commenced operations and have no plans to do so in the foreseeable future.

As of March 31, 2017, our capital ratios were above the levels required to be well capitalized. We believe that our earnings, periodic capital raising transactions and the addition of loan and deposit relationships will allow us to continue to grow organically.

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Commitments and Contractual Obligations

The following table presents significant fixed and determinable contractual payment obligations to third parties by payment date. Payments for borrowings do not include interest. Payments related to leases are based on actual payments specified in the underlying contracts. As of March 31, 2017, our significant fixed and determinable contractual obligations to third parties, excluding interest, were as follows (in thousands):

	Within One Year		After One but Within Three Years		After Three but Within Five Years		After Five Years		Total
Deposits without a stated maturity	$	16,155,747	$	—	$	—	$	—	$	16,155,747
Time deposits	427,994		21,296		343		—		449,633
Federal funds purchased and customer repurchase agreements	141,834		—		—		—		141,834
FHLB borrowings	1,500,000		—		—		—		1,500,000
Operating lease obligations(1)	16,354		40,692		20,146		27,224		104,416
Subordinated notes	—		—		—		281,134		281,134
Trust preferred subordinated debentures	—		—		—		113,406		113,406
Total contractual obligations	$	18,241,929	$	61,988	$	20,489	$	421,764	$	18,746,170

(1) Non-balance sheet item.

Critical Accounting Policies

SEC guidance requires disclosure of “critical accounting policies.” The SEC defines “critical accounting policies” as those that are most important to the presentation of a company’s financial condition and results, and require management’s most difficult, subjective or complex judgments, often as a result of the need to make estimates about the effect of matters that are inherently uncertain.

We follow financial accounting and reporting policies that are in accordance with accounting principles generally accepted in the United States. The more significant of these policies are summarized in Note 1 - Operations and Summary of Significant Accounting Policies in the accompanying notes to the consolidated financial statements included elsewhere in this report. Not all significant accounting policies require management to make difficult, subjective or complex judgments. However, the policy noted below could be deemed to meet the SEC’s definition of a critical accounting policy.

Allowance for Loan Losses

Management considers the policies related to the allowance for loan losses as the most critical to the financial statement presentation. The total allowance for loan losses includes activity related to allowances calculated in accordance with Accounting Standards Codification (“ASC”) 310, Receivables, and ASC 450, Contingencies. The allowance for loan losses is established through a provision for credit losses charged to current earnings. The amount maintained in the allowance reflects management’s continuing evaluation of the loan losses inherent in the loan portfolio. The allowance for loan losses is comprised of specific reserves assigned to certain classified loans and general reserves. Factors contributing to the determination of specific reserves include the creditworthiness of the borrower, and more specifically, changes in the expected future receipt of principal and interest payments and/or in the value of pledged collateral. A reserve is recorded when the carrying amount of the loan exceeds the discounted estimated cash flows using the loan’s initial effective interest rate or the fair value of the collateral for certain collateral dependent loans. For purposes of determining the general allowance, the portfolio is segregated by product types in order to recognize differing risk profiles among categories, and then further segregated by credit grades. See “Summary of Loan Loss Experience” above and Note 4 – Loans Held for Investment and Allowance for Loan Losses in the accompanying notes to the consolidated financial statements included elsewhere in this report for further discussion of the risk factors considered by management in establishing the allowance for loan losses.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market risk is a broad term for the risk of economic loss due to adverse changes in the fair value of a financial instrument. These changes may be the result of various factors, including interest rates, foreign exchange rates, commodity prices, or equity prices. Additionally, the financial instruments subject to market risk can be classified either as held for trading purposes or held for other than trading.

We are subject to market risk primarily through the effect of changes in interest rates on our portfolio of assets held for purposes other than trading. Additionally, we have some market risk relative to commodity prices through our energy lending activities. Petroleum and natural gas commodity prices declined substantially during 2014 and 2015, and prices have continued to be suppressed through 2016. Such declines in commodity prices have and, if continued, could negatively impact our energy clients' ability to perform on their loan obligations. Management does not currently expect the current decline in commodity prices to have a material adverse effect on our financial position. Foreign exchange rates, commodity prices and/or equity prices do not pose significant market risk to us.

The responsibility for managing market risk rests with the BSMC, which operates under policy guidelines established by our board of directors. The negative acceptable variation in net interest revenue due to a 200 basis point increase or decrease in interest rates is generally limited by these guidelines to plus or minus 5%. These guidelines also establish maximum levels for short-term borrowings, short-term assets and public and brokered deposits. They also establish minimum levels for unpledged assets, among other things. Oversight of our compliance with these guidelines is the ongoing responsibility of the BSMC, with exceptions reported to the Risk Management Committee, and to our board of directors if deemed necessary, on a quarterly basis. Additionally, the Credit Policy Committee ("CPC") specifically manages risk relative to commodity price market risks. The CPC establishes maximum portfolio concentration levels for energy loans as well as maximum advance rates for energy collateral.

Interest Rate Risk Management

Our interest rate sensitivity is illustrated in the following table. The table reflects rate-sensitive positions as of March 31, 2017, and is not necessarily indicative of positions on other dates. The balances of interest rate sensitive assets and liabilities are presented in the periods in which they next reprice to market rates or mature and are aggregated to show the interest rate sensitivity gap. The mismatch between repricings or maturities within a time period is commonly referred to as the “gap” for that period. A positive gap (asset sensitive), where interest-rate sensitive assets exceed interest rate sensitive liabilities, generally will result in the net interest margin increasing in a rising rate environment and decreasing in a falling rate environment. A negative gap (liability sensitive) will generally have the opposite results on the net interest margin. To reflect anticipated prepayments, certain asset and liability categories are shown in the table using estimated cash flows rather than contractual cash flows. The Company employs interest rate floors in certain variable rate loans to enhance the yield on those loans at times when market interest rates are extraordinarily low. The degree of asset sensitivity, spreads on loans and net interest margin may be reduced until rates increase by an amount sufficient to eliminate the effects of floors. The adverse effect of floors as market rates increase may also be offset by the positive gap, the extent to which rates on deposits and other funding sources lag increasing market rates and changes in composition of funding.

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Interest Rate Sensitivity Gap Analysis

March 31, 2017

(In thousands)

	0-3 mo Balance		4-12 mo Balance		1-3 yr Balance		3+ yr Balance			Total Balance
Assets:
Interest-bearing deposits, federal funds sold and securities purchased under resale agreements	$	2,804,921	$	—	—		$	—		$	2,804,921
Securities(1)	23,556		5,102		1,547		11,998			42,203
Total variable loans	14,923,371		47,374		—		—			14,970,745
Total fixed loans	453,921		1,234,681		606,649		364,855			2,660,106
Total loans(2)	15,377,292		1,282,055		606,649		364,855			17,630,851
Total interest sensitive assets	$	18,205,769	$	1,287,157	$	608,196	$	376,853		$	20,477,975
Liabilities:
Interest-bearing customer deposits	$	9,061,051	$	—	$	—	$	—		$	9,061,051
CDs & IRAs	196,736		231,258		21,296		343			449,633
Traditional brokered deposits	—		—		—		—			—
Total interest-bearing deposits	9,257,787		231,258		21,296		343			9,510,684
Repurchase agreements, Federal funds      purchased, FHLB borrowings, line      of credit	1,641,834		—		—		—			1,641,834
Subordinated notes	—		—		—		281,134			281,134
Trust preferred subordinated debentures	—		—		—		113,406			113,406
Total borrowings	1,641,834		—		—		394,540			2,036,374
Total interest sensitive liabilities	$	10,899,621	$	231,258	$	21,296	$	394,883		$	11,547,058
Gap	$	7,306,148	$	1,055,899	$	586,900	$	(18,030	)	$	—
Cumulative Gap	7,306,148		8,362,047		8,948,947		8,930,917			8,930,917
Demand deposits										$	7,094,696
Stockholders’ equity										2,050,442
Total										$	9,145,138

(1) Securities based on fair market value.

(2) Loans are stated at gross.

The table above sets forth the balances as of March 31, 2017 for interest-bearing assets, interest-bearing liabilities, and the total of non-interest-bearing deposits and stockholders’ equity. While a gap interest table is useful in analyzing interest rate sensitivity, an interest rate sensitivity simulation provides a better illustration of the sensitivity of earnings to changes in interest rates. Earnings are also affected by changing interest rates on the value of funding derived from demand deposits and stockholders’ equity. We perform a sensitivity analysis to identify interest rate risk exposure on net interest income. We quantify and measure interest rate risk exposure using a model to dynamically simulate the effect of changes in net interest income relative to changes in interest rates and loan and deposit account balances over the next twelve months based on three interest rate scenarios. These are a “most likely” rate scenario and two “shock test” scenarios.

The “most likely” rate scenario is based on the consensus forecast of future interest rates published by independent sources. These forecasts incorporate future spot rates and relevant spreads of instruments that are actively traded in the open market. The Federal Reserve’s Federal funds target affects short-term borrowing rates; the prime lending rate and LIBOR are the basis for most of our variable-rate loan pricing. The 10-year mortgage rate is also monitored because of its effect on prepayment speeds for mortgage-backed securities. We believe these are our primary interest rate exposures. We are not currently using derivatives to manage our interest rate exposure.

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The two “shock test” scenarios assume a sustained parallel 100 and 200 basis point increase in interest rates. As short-term rates have remained low through 2016 and the first three months of 2017, we do not believe that analysis of an assumed decrease in interest rates would provide meaningful results. We will continue to evaluate these scenarios as interest rates change, until short-term rates rise above 3.0%, at which point we will resume evaluations of shock scenarios in which interest rates decrease.

Our interest rate risk exposure model incorporates assumptions regarding the level of interest rate or balance changes on indeterminable maturity deposits (demand deposits, interest-bearing transaction accounts and savings accounts) for a given level of market rate changes. These assumptions have been developed through a combination of historical analysis and future expected pricing behavior. Changes in prepayment behavior of mortgage-backed securities and residential and commercial mortgage loans in each rate environment are captured using industry estimates of prepayment speeds for various coupon segments of the portfolio. The impact of planned growth and new business activities is factored into the simulation model. This modeling indicated interest rate sensitivity as follows (in thousands):

	Anticipated Impact Over the Next Twelve Months as Compared to Most Likely Scenario				Anticipated Impact Over the Next Twelve Months as Compared to Most Likely Scenario
	100 bp Increase		200 bp Increase		100 bp Increase		200 bp Increase
	March 31, 2017				March 31, 2016
Change in net interest income	$	110,730	$	224,489	$	103,009	$	212,583

The simulations used to manage market risk are based on numerous assumptions regarding the effect of changes in interest rates on the timing and extent of repricing characteristics, future cash flows and customer behavior. These assumptions are inherently uncertain and, as a result, the model cannot precisely estimate net interest income or precisely predict the impact of higher or lower interest rates on net interest income. Actual results may differ from simulated results due to timing, magnitude and frequency of interest rate changes as well as changes in market conditions and management strategies, among other factors.

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ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management, with the supervision and participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act of 1934, as amended) as of the end of the period covered by this report. Based upon that evaluation, we have concluded that, as of the end of such period, our disclosure controls and procedures were effective in recording, processing, summarizing and reporting, on a timely basis, information required to be disclosed by us in the reports that we file or submit under the Exchange Act and were effective in ensuring that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is accumulated and communicated to the Company’s management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the period covered by this report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II—OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We are subject to various claims and legal actions related to operating activities that arise in the ordinary course of business. Management does not currently expect the ultimate disposition of these matters to have a material adverse impact on our financial statements.

ITEM 1A. RISK FACTORS

There have been no material changes in the risk factors previously disclosed in the Company’s 2016 Form 10-K for the fiscal year ended December 31, 2016.

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ITEM 6. EXHIBITS

(a)	Exhibits
	10.1*	Form of 2017 Performance Award Agreement for Executive Officers, pursuant to the Texas Capital Bancshares, Inc. 2015 Long-Term Incentive Plan, filed herewith.
	31.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(a) of the Exchange Act, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
	31.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(a) of the Exchange Act, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
	32.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(b) of the Exchange Act and 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
	32.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(b) of the Exchange Act and 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
	101	The following materials from Texas Capital Bancshares, Inc.’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017, formatted in XBRL (eXtensible Business Reporting Language): (i) Consolidated Statements of Income, (ii) Consolidated Balance Sheets, (iii) Consolidated Statements of Cash Flows, and (iv) Notes to Consolidated Financial Statements

* Denotes management contract or compensatory plan.

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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.

TEXAS CAPITAL BANCSHARES, INC.

Date: April 20, 2017

/s/ Peter B. Bartholow

Peter B. Bartholow

Chief Financial Officer

(Duly authorized officer and principal financial officer)

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EXHIBIT INDEX

Exhibit Number
10.1*	Form of 2017 Performance Award Agreement for Executive Officers, pursuant to the Texas Capital Bancshares, Inc. 2015 Long-Term Incentive Plan, filed herewith.
31.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(a) of the Exchange Act, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(a) of the Exchange Act, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
32.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(b) of the Exchange Act and 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
32.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(b) of the Exchange Act and 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
101	The following materials from Texas Capital Bancshares, Inc.’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017, formatted in XBRL (eXtensible Business Reporting Language): (i) Consolidated Statements of Income, (ii) Consolidated Balance Sheets, (iii) Consolidated Statements of Cash Flows, and (iv) Notes to Consolidated Financial Statements

* Denotes management contract or compensatory plan.

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EX-10

Exhibit 10.1

PERFORMANCE AWARD AGREEMENT

UNDER THE

TEXAS CAPITAL BANCSHARES, INC.

2015 LONG-TERM INCENTIVE PLAN

1.Award of Performance Units. Pursuant to the Texas Capital Bancshares, Inc. 2015 Long-Term Incentive Plan (the “Plan”) of Texas Capital Bancshares, Inc., a Delaware corporation (the “Company”) and its Subsidiaries,

(the “Participant”)

as an employee of the Company, has been granted an Award under the Plan for [] Restricted Stock Units (the “Time-Based Units”) and [] Performance Units (the “Performance Units”, collectively, with the Time-Based Units, the “Awarded Units”), which may be converted into the number of whole shares of Common Stock (as determined under Section 4 below) equal to the number of vested Awarded Units (determined in accordance with Section 3 below), subject to the terms and conditions of the Plan and this Performance Award Agreement (this “Agreement”).The Date of Grant of this Award is March 22, 2017. The maximum number of shares of Common Stock that could be issued with respect to the Awarded Units is [].Each Awarded Unit shall be a notional share of Common Stock, with the value of each Awarded Unit being equal to the Fair Market Value of a share of Common Stock at any time.

2.Subject to Plan. This Agreement is subject to the terms and conditions of the Plan, and the terms of the Plan shall control to the extent inconsistent with the provisions of this Agreement. The capitalized terms used herein that are defined in the Plan shall have the same meanings assigned to them in the Plan, except as otherwise expressly provided herein. This Agreement is subject to any rules promulgated pursuant to the Plan by the Board or the Committee and communicated to the Participant in writing.

3.Vesting; Forfeiture. Awarded Units which have become vested pursuant to the terms of this Section 3 are collectively referred to herein as “Vested Units.” All other Awarded Units are collectively referred to herein as “Unvested Units.” The Participant shall be eligible to receive shares of Common Stock with respect to the Vested Units in accordance with Section 4 below.

a.Subject to the provisions of Section 5 and Section 30 below and except as otherwise provided in this Section 3,

(i)One hundred percent (100%) of the Time-Based Units will become vested on March 22, 2020, provided that the Participant is employed by (or if the Participant is a Contractor, Consultant or Outside Director, is providing services to) the Company or its Subsidiaries on such date.

(ii)The Performance Units will vest on the date the Committee determines whether the vesting conditions set forth on Exhibit A hereto have been achieved (which date shall be no later than March 15, 2020).

b.Except as otherwise provided by Section 3.c. and Section 3.g. hereof, immediately upon the Participant’s Termination of Service for any reason whatsoever, the Participant shall be deemed to have forfeited all of the Participant’s Unvested Units.

c.Notwithstanding the foregoing and except as otherwise provided in Section 5 below and regardless of whether the performance criteria set forth in Exhibit A have been achieved, in the event that a Change in Control occurs and on or after the date of the Change in Control, the Participant incurs a Termination of Service by the Company (or by its successor following the Change in Control) without Cause (as defined in Section 3.d. below) or by the Participant for Good Reason (as defined in Section 3.f. below), then 100% of the Unvested Units shall immediately become Vested Units upon such termination.

d.For purposes hereof, “Cause” shall have the meaning set forth in the Participant’s employment agreement with the Company.

e.For purposes hereof, “Change in Control” shall have the meaning set forth in the Plan, provided that such event is a “change in control” within the meaning of Section 409A of the Code, and the regulations and other applicable guidance issued thereunder.

f.For purposes hereof, “Good Reason” shall have the meaning set forth in the Participant’s employment agreement with the Company.

g.Notwithstanding anything to the contrary contained herein, if at any time after the date the Participant reaches age 65 plus twelve (12) years of service with the Company the Participant incurs a Termination of Service with the Board’s consent (other than a Termination of Service for Cause or without Good Reason), then:

(i)A prorated portion of the Time-Based Units shall become Vested Units based on the number of full months between the Date of Grant and the Participant’s Termination of Service (calculated by multiplying the total number of Time-Based Units by a fraction, the numerator of which is the number of full months the Participant has been employed since the Date of Grant and the denominator of which is thirty-six (36)), provided that such Vested Units shall remain subject to the payout provisions of Section 4 and in no event shall any portion of such Time-Based Units vest earlier than the one year anniversary of the Date of Grant; and

(ii)The Performance Units shall not be forfeited upon the Participant’s Termination of Service and instead, such Performance Units shall continue to be subject to the vesting and payout provisions set forth in Exhibit A hereto as if the Participant had remained employed by the Company.

4.Delivery of Common Stock. The Vested Units shall be converted into the number of whole shares of Common Stock equal to the number of Vested Units and the Company shall electronically register such shares of Common Stock in the Participant’s name (or in the name of his or her estate or beneficiary) or deliver certificates for the such shares of Common Stock to the Participant in accordance with the following schedule:

a.March 22, 2020; or

b.If earlier, the date of the Participant’s Termination of Service without Cause or with Good Reason on or after a Change in Control.

To the extent an Awarded Unit does not vest in accordance with the provisions of Section 3 hereof by March 15, 2020, such Awarded Unit shall be forfeited and no shares of Common Stock shall be delivered with respect to such forfeited Awarded Unit.

5.Forfeiture and Disgorgement.

a.Notwithstanding any provisions in this Agreement to the contrary, in the event the Participant violates the provisions of Section 5.b. or the provisions of any agreement between the Company (or any of its Subsidiaries) that contains confidentiality, non-solicitation or other protective or restrictive covenant provisions, then:

(i)the Awarded Units shall immediately cease to vest as of the date of such violation;

(ii)any shares of Common Stock that had not been registered (or delivered) with respect to Awarded Units shall be immediately forfeited and this Agreement (other than the provisions of this Section 5) will be terminated on the date of such violation; and

(iii)any shares of Common Stock (less any taxes paid by the Participant on such shares of Common Stock) that had been delivered to the Participant (or registered in the Participant’s name) with respect to any Vested Units shall be immediately returned to the Company by the Participant.

The Company must deliver written notice of its intent to enforce the provisions of this Section 5.a. at least fifteen (15) days prior to the date it intends to enforce the terms of Sections 5.a.(i) and (ii). Both the Company and the Participant agree that upon delivery of written notice under this Section 5.a., neither party will enter into any transaction that will affect the other party’s interests in the cash subject to dispute until the expiration of the fifteen (15) day notice period.

The provisions of this Section 5 (including, without limitation, the provisions of this Section 5.a. and the provisions of Section 5.b. below) only shall apply to the Awarded Units for the period beginning on the Date of Grant and ending on the earlier of (i) the one year (or, in the event the Awarded Units vest in accordance with Section 3.g. above, the four year) anniversary of the date the Awarded Units become vested in accordance with the provisions of Section 3 above (regardless of whether the Agreement terminates or expires prior to such date), or (ii) if a Change in Control occurs, the date of the Participant’s Termination of Service either by the Company without Cause or by the Participant with Good Reason.

b.By execution of this Agreement, the Participant, either individually or as a principal, partner, stockholder, manager, agent, consultant, contractor, employee, lender, investor, volunteer or as a director or officer of any corporation or association, or in any other manner or capacity whatsoever, agrees to the following:

(i)Confidential Information. The Participant acknowledges that the Company has developed and will continue to develop unique concepts, lending practices, sales presentations, marketing programs, marketing strategies, business practices, methods of operation, pricing information, cost information, trademarks, licenses, technical information, proprietary information, computer software programs, computer tapes and disks concerning its operations systems, customer lists, customer leads, customer loan and financial information, documents identifying past, present and future customers, customer profiles and preference data, hiring and training methods, investment policies, financial and other confidential, proprietary and/or trade secret information concerning the Company’s operations and expansion plans (“Confidential Information”). The Confidential Information includes, without limitation, information about the Company’s business, proprietary, and technical information that is not known to others and could have economic value to others if improperly disclosed. Confidential Information also means any information the Company discloses to the Participant, either directly or indirectly, in writing, orally or by inspection of tangible objects, including, without limitation, information and technical data contained in the Company’s manuals, booklets, publications and materials, equipment of every kind and character, as well as documents, prototypes, samples, prospects, inventions, product ideas, know how, processes, plans (including, without limitation, marketing plans and strategies), specifications, designs, techniques, technology, formulas, software, improvements, forecasts, and research. Confidential Information does not include any information that is available to the public or, upon reasonable investigation, is ascertainable in the public domain or information generally known outside of the Company. The Participant’s obligations under this Section 5 regarding specific Confidential Information shall cease when that specific portion of the Confidential Information becomes publicly known, in its entirety and without combining portions of such information obtained separately.

(ii)Access to and Agreement Not To Disclose Confidential Information. During Participant’s Company employment, the Company agrees to provide the Participant with some or all of the Company’s Confidential Information to which the Participant has not had previous access or knowledge. By executing this Agreement, the Participant agrees that the Confidential Information constitutes valuable, special and unique assets of the Company, developed at the Company’s great expense, the unauthorized use or disclosure of which would cause irreparable harm to the Company. The Participant understands and acknowledges that the Company is engaged in a specialized and competitive industry; that the Company relies heavily on information, data, programs, and processes

it has developed and acquired; and that competitors can reap potential or real economic benefits from the possession of the Confidential Information that is otherwise not available to its competitors. The Participant understands and acknowledges, therefore, that the protection of the Company’s Confidential Information constitutes the Company’s legitimate business interest. The Participant acknowledges that the Confidential Information is the Company’s exclusive property, and the Participant will hold the Confidential Information in trust and solely for the Company’s benefit. The Participant further acknowledges that the Confidential Information includes “trade secrets” under Texas law and, in addition to the other protections provided in this Agreement, all trade secrets will be accorded the protection and benefits under Texas law and any other applicable law. The Participant waives any requirement that the Company submit proof of any trade secret’s economic value or post a bond or other security should the need arise.

In exchange for the Company’s promise to provide the Participant with some or all of the Company’s Confidential Information to which the Participant has not previously had access or knowledge, the Participant agrees that he or she will not, either during the period of the Participant’s employment with the Company or at any time thereafter, use or rely upon for the Participant’s benefit or the benefit of another, or disclose, disseminate, or distribute to anyone, including, without limitation, any individual, person, firm, corporation, or other entity, or publish, or use for any purpose, any of the Confidential Information (whether acquired, learned, obtained, or developed by the Participant alone or in conjunction with others), except (A) as properly required in the ordinary course of the Company’s business or as the Company directs and authorizes; (B) as required by applicable law (if, to the extent reasonable and practicable, reasonable prior notice of such disclosure is given to the Company); or (C) to the extent such information is available to or known by the public (other than as a result of disclosure in violation of this Agreement). The Participant agrees that he or she will take all reasonable measures to protect the secrecy of and avoid unauthorized disclosure and unauthorized use of the Confidential Information. The Participant also agrees to notify the Company immediately in the event of any unauthorized use, reliance upon or disclosure of the Company’s Confidential Information of which the Participant is aware.

(iii)Use of Confidential Information During Employment. The Participant further agrees that in the course of his or her employment by the Company, the Participant will not remove from any office of the Company any documents, electronically stored information, or related items that contain Confidential Information, including, without limitation, computer discs, recordings, or other storage or archival systems or devices, including copies, except as may be required in the performance of the Participant’s duties as an employee of the Company. The Participant also agrees that he or she will not place or save any Confidential Information on any computer or electronic storage system that is not the Company’s property, except to perform work for the Company. All Confidential Information, and all memoranda, notes, records, drawings, documents, or other writings whatsoever made, compiled, acquired, or received by the Participant at any time during his or her employment, including during the term of this Agreement, arising out of, in connection with, or related to any activity or business of the Company, including, without limitation, the customers, vendors, third parties, or others with whom the Company has a business relationship, the arrangements of the Company with such parties, and the pricing and expansion policies and strategy of the Company, are, and shall continue to be, the Company’s sole and exclusive property.

(iv)Protective Covenants. The Participant agrees that to protect the Company’s Confidential Information, and in consideration for the equity compensation in this Agreement, it is necessary to enter into the following protective covenants, which are ancillary to the enforceable promises between the Company and the Participant in the other Agreement Sections. During the Participant’s employment with the Company, and for a one-year period (or, in the event the Awarded Units vest in accordance with Section 3.g. above, the four-year period) after the date the Participant’s employment is terminated by the Company for any reason, or if the Participant resigns for any reason, the Participant shall not, without the Company’s prior written consent, directly or indirectly: (A) compete for or solicit business for or on behalf of any person or business entity operating a state or

national bank or company providing similar services with a place of business in the State of Texas; (B) own, operate, participate in, undertake any employment with, or have any interest in any entity with a place of business in the State of Texas related to the operation of a state or national bank or company providing similar services, except that the Participant may own publicly traded stock for investment purposes only in any company in which the Participant owns less than 5% of the voting equity; or (C) use or rely upon in any competition, solicitation, or marketing effort any Confidential Information.

The Participant also acknowledges that the geographic boundaries, scope of prohibited activities, and the duration of the provisions in the Protective Covenants are reasonable and are no broader than are necessary to protect the Company’s legitimate business interests. The Protective Covenants shall survive the termination of the Participant’s employment and can be revoked or modified only by a writing signed by the parties that specifically states an intent to revoke or modify this provision. The Participant acknowledges that the Company would not provide him or her with access to its Confidential Information but for his or her covenants or promises contained in this Section 5.b. The Participant further agrees that during the protective covenant term, he or she shall immediately notify the Company in writing of any employment, work, or business he or she undertakes with or on behalf of any person (including himself or herself) or entity.

(v)No Solicitation of Employees/Customers. The Participant agrees that the no-employee solicitation covenant in this Section 5.b.(v) constitutes a reasonable and appropriate means, consistent with the best interests of both the Participant and the Company, to protect the Company’s interests in providing valuable equity compensation to the Participant and in preventing the loss or disclosure of the Company’s Confidential Information. As an inducement for the Company’s agreement to provide the Participant the equity compensation in this Agreement, and to provide the Participant with the Company’s Confidential Information, the Participant agrees that during the Participant’s employment, and for a period of one (1) year following the termination or resignation of the Participant’s employment, for whatever reason, the Participant will not, alone or in combination with any individual, partner(s), company, corporation, or other entity or business with which he is in any way affiliated, including, without limitation, any partner, limited partner, member, director, officer, shareholder, employee, or agent of any such entity, recruit, solicit, request, induce or attempt to influence, directly or indirectly, any employee of the Company to resign or terminate employment with the Company. The Participant agrees that for a period of one year (or, in the event the Awarded Units vest in accordance with Section 3.g. above, four years) following the termination or resignation of his employment, for whatever reason, whether involuntary or voluntary, he shall not, directly or indirectly, as an owner, stockholder, director, employee, partner, agent, broker, consultant or other participant solicit a customer or prospective customer, or accept any business from a customer or prospective customer with whom he or she has done business or with whom he or she has had contact during the last twelve (12) months of the Participant’s employment with the Company.

(vi)Definition Related to No-Solicitation of Employee Provision. In Section 5.b.(v), “Employee” means any employee on the Company’s payroll during the Protective Covenant time period specified in Section 5.b.(v).

(vii)Return of Documents. In the event of the Participant’s termination or resignation of his or her employment with the Company for any reason, the Participant will deliver to the Company all non-personal documents and data of any nature, and in whatever medium, concerning the Participant’s employment with the Company or any of its Subsidiaries. The Participant agrees that he or she will not take with him or her any of the Company’s property, documents, or data of any description or any reproduction thereof, including summaries or notes regarding same, or any documents containing or relating to any of the Company’s Confidential Information.

(viii)Injunctive Relief. The Participant acknowledges and agrees that the Participant’s obligations, covenants, and agreements in Sections 5.b.(i)-(vii) concern special, unique and

extraordinary matters and that a violation of any of the terms of these agreements, covenants or obligations will cause the Company irreparable injury for which adequate remedies at law are not available. Therefore, the Participant agrees that the Company, in addition to any amounts that the Company is entitled to pursuant to Section 5.a. above, will be entitled to an injunction, restraining order, or all other equitable relief as a court of competent jurisdiction may deem necessary or appropriate to restrain the Participant from committing any violation of the agreements, covenants or obligations referred to in Sections 5.b.(i)-(vii).

(ix)Disclosures to Courts, Governmental Agencies or Administrative or Legislative Bodies. Notwithstanding the foregoing or any other agreement regarding confidentiality with the Company, the Participant may disclose Confidential Information when required to do so by a court of competent jurisdiction, by any governmental agency having authority over the Participant or the business of the Company or by any administrative body or legislative body (including a committee thereof) with jurisdiction to order the Participant to divulge, disclose or make accessible such information. Nothing in this Agreement is intended to interfere with the Participant’s right to (i) report possible violations of state or federal law or regulation to any governmental agency or entity, (ii) make other disclosures that are protected under the whistleblower provisions of state or federal law or regulation, (iii) file a claim or charge with the EEOC, any state human rights commission, or any other government agency or entity, or (iv) testify, assist, or participate in an investigation, hearing, or proceeding conducted by the EEOC, any state human rights commission, or any other government or law enforcement agency, entity or court.

(x)Defend Trade Secrets Act of 2016. The Participant is hereby notified in accordance with the Defend Trade Secrets Act of 2016 that the Participant will not be held criminally or civilly liable under any federal or state trade secret law for the disclosure of a trade secret that (a) is made (i) in confidence to a federal, state, or local government official, either directly or indirectly, or to an attorney; and (ii) solely for the purpose of reporting or investigating a suspected violation of law; or (b) is made in a complaint or other document that is filed under seal in a lawsuit or other proceeding. The Participant is further notified that if the Participant files a lawsuit for retaliation against the Company for reporting a suspected violation of law, the Participant may disclose the Company’s trade secrets to the Participant’s attorney and use the trade secret information in the court proceeding if the Participant: (x) files any document containing the trade secret under seal; and (y) does not disclose the trade secret, except pursuant to court order.

6.Who May Receive Common Stock with Respect to Vested Units. During the lifetime of the Participant, the Common Stock received upon conversion of the Vested Units may only be received by the Participant or his or her legal representative. If the Participant dies prior to the date his or her Awarded Units are converted into shares of Common Stock as described in Section 4 above, the Common Stock relating to such converted Awarded Units may be received by any individual who is entitled to receive the property of the Participant pursuant to the applicable laws of descent and distribution.

7.Common Stock Subject Ownership Guidelines. The Participant acknowledges, understands and agrees that any Common Stock delivered to the Participant (or registered in the Participant’s name) pursuant to this Agreement shall be subject to the Common Stock ownership guidelines as adopted by the Committee and in effect from time to time, and that the Participant may be required to hold such Common Stock until the Participant has met the requirements of such ownership guidelines. The Participant further acknowledges, understands and agrees that the Committee retains the right to modify the Company’s Common Stock ownership guidelines at any time.

8.Rights as Stockholder. The Participant will have no rights as a stockholder with respect to the Awarded Units until the issuance of a certificate or certificates to the Participant or the registration of such shares of Common Stock in the Participant’s name. The Awarded Units shall be subject to the terms and conditions of this Agreement.

9.No Fractional Shares. Awarded Units may be converted only with respect to full shares, and no fractional share of Common Stock shall be issued.

10.Non-assignability. The Awarded Units are not assignable or transferable by the Participant except by will or by the laws of descent and distribution.

11.The Participant’s Acknowledgments. The Participant acknowledges receipt of a copy of the Plan, which is annexed hereto, and represents that he or she is familiar with the terms and provisions thereof, and hereby accepts the Awarded Units subject to all the terms and provisions thereof. The Participant hereby agrees to accept as binding, conclusive, and final all decisions or interpretations of the Committee or the Board, as appropriate, upon any questions arising under the Plan or this Agreement.

12.Adjustment of Number of Awarded Units and Related Matters. The number of shares of Common Stock covered by the Awarded Units shall be subject to adjustment in accordance with Articles 11-13 of the Plan.

13.Execution of Documents. The Participant, by his or her electronic execution of this Agreement, hereby agrees to execute any documents requested by the Company in connection with the payment of any amount in connection with the Awarded Units pursuant to this Agreement.

14.Remedies. Except as otherwise provided in Section 5 in this Agreement, each of the parties to this Agreement will be entitled to enforce its rights under this Agreement specifically, to recover damages and costs (including reasonable attorneys’ fees) caused by any breach of any provision of this Agreement, and to exercise all other rights existing in the party’s favor. The parties hereto agree and acknowledge that money damages may not be an adequate remedy for any breach of the provisions of this Agreement and that any party in its, his or her sole discretion may apply to any court of law or equity of competent jurisdiction (without posting any bond or deposit) for specific performance and/or other injunctive relief in order to enforce or prevent any violations of the provisions of this Agreement. The remedies for any violation of Section 5 above are limited to the forfeiture, disgorgement, and injunction remedies specified in Sections 5.a. and b.(viii). and are subject to the time-limitations set forth in Section 5.a. above. The remedies described in this Section 14 do not apply to Section 5.

15.The Participant’s Representations. Notwithstanding any of the provisions hereof, the Participant hereby agrees that the Company will not be obligated to register any shares of Common Stock in the Participant’s name or issue any shares of Common Stock to the Participant hereunder, if the issuance of such shares shall constitute a violation by the Participant or the Company of any provision of any law or regulation of any governmental authority. Any determination by the Company under this Section 15 shall be final, binding, and conclusive. The obligations of the Company and the rights of the Participant are subject to all applicable laws, rules and regulations.

16.Investment Representation. Unless the shares of Common Stock are issued to the Participant in a transaction registered under applicable federal and state securities laws, by his execution hereof, the Participant represents and warrants to the Company that all Common Stock which may be acquired hereunder will be acquired by the Participant for investment purposes for his own account and not with any intent for resale or distribution in violation of federal or states securities laws, all certificates issued with respect to the Common Stock shall bear an appropriate restrictive investment legend and shall be held indefinitely, unless they are subsequently registered under the applicable federal and state securities laws or the Participant obtains an opinion of counsel, in form and substance satisfactory to the Company and its counsel, that such registration is not required.

17.Law Governing. This Agreement shall be governed by, construed, and enforced in accordance with the laws of the State of Delaware (excluding any conflict of laws rule or principle of Delaware law that might refer the governance, construction, or interpretation of this agreement to the laws of another state). The Participant’s sole remedy for any Claim shall be against the Company and no Participant shall have any claim or right of any nature against any Subsidiary of the Company or any stockholder or existing or former director, officer, or Employee of the Company or any Subsidiary of the Company.

18.No Right to Continue Service or Employment. Nothing herein shall be construed to confer upon the Participant the right to continue in the employ or to provide services to the Company or any Subsidiary, whether as

an Employee, Contractor, consultant or Outside Director, or interfere with or restrict in any way the right of the Company or any Subsidiary to discharge the Participant as an Employee, Contractor, consultant or Outside Director at any time.

19.Legal Construction. In the event that any one or more of the terms, provisions, or agreements that are contained in this Agreement shall be held by a court of competent jurisdiction to be invalid, illegal, or unenforceable in any respect for any reason, the invalid, illegal, or unenforceable term, provision, or agreement shall not affect any other term, provision, or agreement that is contained in this Agreement and this Agreement shall be construed in all respects as if the invalid, illegal, or unenforceable term, provision, or agreement had never been contained herein.

20.Covenants and Agreements as Independent Agreements. Each of the covenants and agreements set forth in this Agreement shall be construed as a covenant and agreement independent of any other provision of this Agreement. The existence of any claim or cause of action of the Participant against the Company, whether predicated on this Agreement or otherwise, shall not constitute a defense to the enforcement by the Company of the covenants and agreements that are set forth in this Agreement.

21.Entire Agreement. This Agreement, together with the Plan, supersede any and all other prior understandings and agreements, either oral or in writing, between the parties with respect to the subject matter in this Agreement and constitute the only agreements between the parties with respect to the subject matter in this Agreement. Except for the Employment Agreement between the Participant and the Company (if any), all prior negotiations and agreements between the parties with respect to the subject matter in this Agreement are merged into this Agreement. Each party to this Agreement acknowledges that no representations, inducements, promises, or agreements, orally or otherwise, have been made by any party or by anyone acting on behalf of any party, which are not embodied in this Agreement or the Plan and that any agreement, statement or promise that is not contained in this Agreement or the Plan shall not be valid or binding or of any force or effect.

22.Counterparts. This Agreement may be executed in separate counterparts, each of which shall be deemed to be an original and all of which taken together shall constitute one and the same agreement.

23.Parties Bound. The terms, provisions, and agreements that are contained in this Agreement shall apply to, be binding upon, and inure to the benefit of the parties and their respective heirs, executors, administrators, legal representatives, and permitted successors and assigns, subject to the limitation on assignment expressly set forth herein.

24.Modification. No change or modification of this Agreement shall be valid or binding upon the parties unless the change or modification is in writing and signed by the parties (electronically or otherwise); provided, however, that the Company may change or modify this Agreement without the Participant’s consent or signature if the Company determines, in its sole discretion, that such change or modification is necessary for purposes of compliance with or exemption from the requirements of Section 409A of the Code or any regulations or other guidance issued thereunder.

25.Headings. The headings that are used in this Agreement are used for reference and convenience purposes only and do not constitute substantive matters to be considered in construing the terms and provisions of this Agreement.

26.Gender and Number. Words of any gender used in this Agreement shall be held and construed to include any other gender, and words in the singular number shall be held to include the plural, and vice versa, unless the context requires otherwise.

27.Notice. Any notice required or permitted to be delivered hereunder shall be deemed to be delivered only when actually received by the Company or by the Participant, as the case may be, at the addresses set forth below, or at such other addresses as they have theretofore specified by written notice delivered in accordance herewith:

a.Notice to the Company shall be addressed and delivered as follows:

Texas Capital Bancshares, Inc.

2000 McKinney Avenue, Suite 700

Dallas, Texas 75201

Attn: Human Resources

Facsimile: 214-932-6699

b.Notice to the Participant shall be addressed and delivered to the most recent address in the Company’s records.

28.Clawback. The Participant acknowledges, understands and agrees, with respect to any shares of Common Stock delivered to the Participant (or registered in the Participant’s name) pursuant to this Agreement, that such shares of Common Stock shall be subject to recovery by the Company, and the Participant shall be required to repay such compensation or shares of Common Stock, in accordance with the Company’s Claw-Back Policy, as in effect from time to time. The Participant further acknowledges, understands, and agrees that the Board retains the right to modify the Company’s Claw-Back Policy at any time.

29.Tax Requirements. The Participant is hereby advised to consult immediately with his or her own tax advisor regarding the tax consequences of this Agreement, including, without limitation, any possible tax consequences of this Agreement in connection with Section 409A of the Code. The Company, or if applicable, any Subsidiary (for purposes of this Section 29, the term “Company” shall be deemed to include any applicable Subsidiary) has the authority and the right to deduct or withhold, or require the Participant to remit to the employer, an amount sufficient to satisfy federal, state, and local taxes (including the Participant’s FICA obligation) required by law to be withheld with respect to any taxable event arising as a result of the vesting or conversion of the RSUs. Unless otherwise determined by the Committee at the time the Award is granted or thereafter, the Company shall satisfy any such withholding requirement by withholding the number of Awarded Shares having a Fair Market Value on the date of withholding equal to the amount required to be withheld for tax purposes.

30.Section 409A.

a.To the extent (i) any shares of Common Stock to which the Participant becomes entitled under this Agreement, or any agreement or plan referenced herein, in connection with the Participant's termination of employment with the Company constitutes deferred compensation subject to Section 409A of the Code; (ii) the Participant is deemed at the time of his separation from service to be a “specified employee” under Section 409A of the Code; and (iii) at the time of the Participant’s separation from service the Company is publicly traded (as defined in Section 409A of the Code), then such shares of Common Stock (other than any delivery of Common Stock permitted by Section 409A of the Code to be paid or delivered within six (6) months of the Participant’s separation from service) shall not be made until the earlier of (x) the first day of the seventh month following the Participant’s separation from service or (y) the date of the Participant’s death following such separation from service. Upon the expiration of the applicable deferral period, any shares of Common Stock which would have otherwise been made during that period (whether in a single sum or in installments) in the absence of this Section 30 (together with, as applicable, accrued interest thereon) shall be delivered to the Participant or the Participant's beneficiary in one lump sum.

b.A termination of employment shall not be deemed to have occurred for purposes of any provision of this Agreement providing for the payment of any amounts or benefits upon or following a termination of employment unless such termination is also a “separation from service” (within the meaning of Section 409A of the Code).

c.It is intended that this Agreement comply with the provisions of Section 409A of the Code so as to not subject the Participant to the payment of additional interest and taxes under Section 409A of the Code, and in furtherance of this intent, this Agreement shall be interpreted, operated and administered in a manner consistent with these intentions.

Exhibit A to 2015 LTIP Performance Award Agreement    Page 4 of 4

EXHIBIT A

The Performance Units (50% of all Awarded Units) shall vest in accordance with the following schedule (25% based on EPS Growth measured against the Three Year Plan, 25% EPS Growth measured against Peer Group, 25% Average ROE % measured against the Three Year Plan, and 25 Average ROE % measured against Peer Group)

1. For purposes of this Exhibit A and the Agreement, unless the context requires otherwise, the following terms shall have the meanings indicated:

a. “Average ROE %” shall mean a company’s average reported return on equity for each year during the Performance Period, determined by taking the average of each individual year’s reported return on equity (not determined on an aggregate three-year basis) as determined by the Committee. Average ROE % of a component company in the Peer Group and of the Company shall be adjusted to take into account stock splits, reverse stock splits, and special dividends that occur during the Performance Period.

b. “EPS Growth” shall mean a company’s compounded annual growth in earnings per share for the Performance Period, as determined by the Committee, based on reported earnings per share for each year in the Performance Period. EPS Growth of a component company in the Peer Group and of the Company shall be adjusted to take into account stock splits, reverse stock splits, and special dividends that occur during the Performance Period.

c. “Performance Period” shall mean the period commencing on and including January 1, 2017 and ending on December 31, 2019.

d. “Peer Group” shall be comprised of the following companies:

BOK Financial Corporation	PrivateBancorp, Inc.
Cullen/Frost Bankers, Inc.	Prosperity Bancshares Inc.
FirstMerit Corporation	Signature Bank
First Midwest Bancorp, Inc.	SVB Financial Group
IberiaBank Corporation	TCF Financial Corporation
MB Financial, Inc.	TrustMark Corporation
PacWest Bancorp	Western Alliance Bancorporation
Pinnacle Financial Partners, Inc.	Wintrust Financial Corporation

Notwithstanding the foregoing, the Peer Group shall be subject to the following adjustments:

(i) If during the Performance Period two component companies of the Peer Group merge or otherwise combine into a single entity, the surviving entity shall remain a component company of the Peer Group and the non-surviving entity shall be removed from the Peer Group, provided that the surviving entity continues to meet the criteria for inclusion in the Peer Group; if the surviving entity no longer meets the criteria for inclusion in the Peer Group, the surviving entity will be removed from the Peer Group for all periods after such merger or combination.

(ii) If during the applicable Performance Period a component company of the Peer Group merges into or otherwise combines with an entity that is not a component company of the Peer Group, such component company shall be removed from the Peer Group for all periods after such merger or combination.

(iii) If during the applicable Performance Period a component company of the Peer Group ceases to be a public company by becoming a private company through the “going dark” process, such component company shall be removed from the Peer Group for all periods after the component company ceases to be a public company.

(iv) If during the applicable Performance Period a component company of the Peer Group files a petition for reorganization under Chapter 11 of the U.S. Bankruptcy Code or liquidation under Chapter 7 of the U.S. Bankruptcy Code, such component company shall be removed from the Peer Group for all periods after such filing.

e. “Three Year Plan” means the three year plan approved by the Board in January 2017.

2. Subject to paragraph 6 below, upon the achievement of EPS Growth for the Performance Period measured against the Three Year Plan, as determined by the Committee, the percentage of 25% of the Performance Units that shall vest shall be as follows:

EPS Growth Against Three Year Plan	% Vested and Payout
[]%	50%
[]%	75%
[]%	100%
[]%	125%
[]%	150%

3. Subject to paragraph 6 below, upon the achievement of EPS Growth measured against EPS Growth for the Peer Group during the Performance Period, as determined by the Committee, the percentage of 25% of the Performance Units that shall vest based upon the Company’s ranking within its Peer Group shall be as follows:

Rank within Peer Group Based on EPS Growth	% Vested and Payout
[]	0%
[]	50%
[]	100%
[]	125%
[]	150%

4. Subject to paragraph 6 below, upon achievement of an Average ROE % measured against the Three Year Plan, as determined by the Committee, the percentage of 25% of the Performance Units that vest shall be as follows:

Average ROE % Against Three Year Plan	% Vested
[]	50%
[]	75%
[]	100%
[]	125%
[]	150%

5. Subject to paragraph 6 below, upon achievement of Average ROE % performance as measured against the Peer Group for the Performance Period, the percentage of 25% of the Performance Units that vest based on the Company’s ranking within its Peer Group shall be as follows:

Rank within Peer Group Based on Average ROE%	% Vested
[]	0%
[]	50%
[]	100%
[]	125%
[]	150%

6. Achievement of the performance goals set forth in paragraphs 2, 3, 4 and 5 of this Exhibit A shall be determined by the Committee, in its sole discretion, and shall be subject to the following terms and conditions:

a. Payouts between performance levels shall be linear.

b. All performance metrics assume that no capital raises occur during the Performance Period. If a capital raise occurs during the Performance Period, performance shall be adjusted to exclude the effects of the capital raise.

c. Performance goals only shall be considered achieved if the Committee determines, in its sole discretion, that the following four goals have been met, in addition to the EPS Growth and Average ROE % goals set forth in paragraphs 2, 3, 4 and 5 of this Exhibit A:

(i) Asset quality: The Company’s asset quality and credit controls are at a level of comparable high performing banks’ asset quality and credit controls;

(ii) Tangible Capital Ratio: The Company’s tangible capital ratio is at a level that the Committee determines, in its sole discretion, is at a level for solidly capitalized banks;

(iii) Efficiency Ratio: The Company’s guidepost efficiency ratio is at 60% or better (excluding from the calculation of the efficiency ratio, the expense reflected in non-interest expense related to valuation of foreclosed real estate, provided that such expenses are included as credit-related costs in determination of ROE above); and

(iv) Deposit Growth: At least 100% of the loans held by the Company for investment are supported by core deposits.

EX-31.1

EXHIBIT 31.1

CERTIFICATION

I, C. Keith Cargill, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Texas Capital Bancshares, Inc.;

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 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: April 20, 2017

/s/ C. Keith Cargill

C. Keith Cargill

Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATION

I, Peter B. Bartholow, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Texas Capital Bancshares, Inc.;

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 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 controls 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: April 20, 2017

/s/ Peter B. Bartholow

Peter B. Bartholow

Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION

In connection with the Quarterly Report on Form 10-Q of Texas Capital Bancshares, Inc. (the “Company”) for the period ending March 31, 2017 (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, I, C. Keith Cargill, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

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

2. The information contained in the Report, fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ C. Keith Cargill

C. Keith Cargill

Chief Executive Officer

Date: April 20, 2017

EX-32.2

EXHIBIT 32.2

CERTIFICATION

In connection with the Quarterly Report on Form 10-Q of Texas Capital Bancshares, Inc. (the “Company”) for the period ending March 31, 2017 (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, I, Peter B. Bartholow, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

1 The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2 The information contained in the Report, fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Peter B. Bartholow

Peter B. Bartholow

Chief Financial Officer

Date: April 20, 2017

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Apr. 19, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	TEXAS CAPITAL BANCSHARES INC/TX
Entity Central Index Key	0001077428
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		49,564,933

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 116,013	$ 113,707
Interest-bearing deposits	2,779,921	2,700,645
Federal funds sold and securities purchased under resale agreements	25,000	25,000
Securities, available-for-sale	42,203	24,874
Loans held for sale, at fair value	884,647	968,929
Loans held for investment, mortgage finance	3,371,598	4,497,338
Loans held for investment (net of unearned income)	13,298,918	13,001,011
Less: Allowance for loan losses	172,013	168,126
Loans held for investment, net	16,498,503	17,330,223
Mortgage servicing rights, net	45,526	28,536
Premises and equipment, net	20,831	19,775
Accrued interest receivable and other assets	432,835	465,933
Goodwill and intangible assets, net	19,395	19,512
Total assets	20,864,874	21,697,134
Non-interest-bearing
Non-interest-bearing	7,094,696	7,994,201
Interest-bearing	9,510,684	9,022,630
Total deposits	16,605,380	17,016,831
Accrued interest payable	3,293	5,498
Other liabilities	169,385	161,223
Federal funds purchased and repurchase agreements	141,834	109,575
Other borrowings	1,500,000	2,000,000
Subordinated notes, net	281,134	281,044
Trust preferred subordinated debentures	113,406	113,406
Total liabilities	18,814,432	19,687,577
Stockholders’ equity:
Preferred stock, $.01 par value, $1,000 liquidation value; Authorized shares - 10,000,000; Issued shares – 6,000,000 shares issued at June 30, 2015 and December 31, 2014, respectively	150,000	150,000
Common stock, $.01 par value; Authorized shares - 100,000,000; Issued shares – 45,813,388 and 45,735,424 at June 30, 2015 and December 31, 2014, respectively	496	495
Additional paid-in capital	956,246	955,468
Retained earnings	943,291	903,187
Treasury stock (shares at cost: 417 at March 31, 2017 and December 31, 2016)	(8)	(8)
Accumulated other comprehensive income, net of taxes	417	415
Total stockholders’ equity	2,050,442	2,009,557
Total liabilities and stockholders’ equity	$ 20,864,874	$ 21,697,134

XML

CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred Stock, shares authorized	10,000,000	10,000,000
Preferred Stock, shares issued	6,000,000	6,000,000
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	100,000,000	100,000,000
Common Stock, shares issued	49,560,517	49,504,079
Treasury Stock, shares	417	417

XML

CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest income
Interest and fees on loans	$ 176,624	$ 155,885
Securities	225	261
Federal funds sold and securities purchased under resale agreements	530	372
Deposits in other banks	6,567	3,285
Total interest income	183,946	159,803
Interest expense
Deposits	13,293	8,822
Federal funds purchased	252	126
Repurchase agreements	1	3
Other borrowings	2,020	1,162
Subordinated notes	4,191	4,191
Trust preferred subordinated debentures	830	716
Total interest expense	20,587	15,020
Net interest income	163,359	144,783
Provision for credit losses	9,000	30,000
Net interest income after provision for credit losses	154,359	114,783
Non-interest income
Service charges on deposit accounts	3,045	2,110
Wealth management and trust fee income	1,357	813
Bank owned life insurance (BOLI) income	466	536
Brokered loan fees	5,678	4,645
Servicing income	2,201	(55)
Swap fees	1,803	307
Other	2,560	2,941
Total non-interest income	17,110	11,297
Non-interest expense
Salaries and employee benefits	63,003	51,372
Net occupancy expense	6,111	5,812
Marketing	4,950	3,908
Legal and professional	7,453	5,324
Communications and technology	6,506	6,217
FDIC insurance assessment	5,994	5,469
Servicing related expenses	1,750	73
Other	10,327	8,645
Total non-interest expense	106,094	86,820
Income before income taxes	65,375	39,260
Income tax expense	22,833	14,132
Net income	42,542	25,128
Preferred stock dividends	2,438	2,438
Net income available to common stockholders	40,104	22,690
Other comprehensive income (loss)
Change in net unrealized gain on available-for-sale securities arising during period, before-tax	3	(38)
Income tax expense/(benefit) related to net unrealized gain on available-for-sale securities	1	(14)
Other comprehensive income/(loss), net of tax	2	(24)
Comprehensive income	$ 42,544	$ 25,104
Basic earnings per common share (usd per share)	$ 0.81	$ 0.49
Diluted earnings per common share (usd per share)	$ 0.80	$ 0.49

XML

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss), Net of Taxes
Stockholders' equity, beginning balance at Dec. 31, 2015	$ 1,623,533	$ 150,000	$ 459	$ 714,546	$ 757,818	$ (8)	$ 718
Shares, outstanding, beginning balance at Dec. 31, 2015		6,000,000	45,874,224			417
Comprehensive income:
Net income	25,128				25,128
Change in unrealized gain on available-for-sale securities, net of taxes	(24)						(24)
Total comprehensive income	25,104
Tax benefit related to exercise of stock-based awards	40			40
Stock-based compensation expense recognized in earnings	1,132			1,132
Preferred stock dividend	(2,438)				(2,438)
Issuance of stock related to stock-based awards - value	(283)		$ 0	(283)
Issuance of stock related to stock-based awards - shares			28,682
Stockholders' equity, ending balance at Mar. 31, 2016	1,647,088	$ 150,000	$ 459	715,435	780,508	$ (8)	694
Shares, outstanding, ending balance at Mar. 31, 2016		6,000,000	45,902,906.000			417
Stockholders' equity, beginning balance at Dec. 31, 2016	2,009,557	$ 150,000	$ 495	955,468	903,187	$ (8)	415
Shares, outstanding, beginning balance at Dec. 31, 2016		6,000,000	49,504,079			417
Comprehensive income:
Net income	42,542				42,542
Change in unrealized gain on available-for-sale securities, net of taxes	2						2
Total comprehensive income	42,544
Stock-based compensation expense recognized in earnings	1,669			1,669
Preferred stock dividend	(2,438)				(2,438)
Issuance of stock related to stock-based awards - value	(890)		$ (1)	(891)
Issuance of stock related to stock-based awards - shares			22,843
Stockholders' equity, ending balance at Mar. 31, 2017	2,050,442	$ 150,000	$ 496	956,246	$ 943,291	$ (8)	$ 417
Shares, outstanding, ending balance at Mar. 31, 2017		6,000,000	49,560,517.000			417.000
Comprehensive income:
Stock Issued During Period, Shares, Other			33,595
Stock Issued During Period, Value, Other	$ 0		$ 0	$ 0

XML

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Stockholders' Equity [Abstract]
Income tax expense/(benefit) related to net unrealized gain on available-for-sale securities	$ 1	$ (14)

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating activities
Income from continuing operations	$ 42,542	$ 25,128
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	9,000	30,000
Depreciation and amortization	6,216	5,092
Bank owned life insurance (BOLI) income	(466)	(536)
Stock-based compensation expense	(4,559)	(459)
Excess tax benefits from stock-based compensation arrangements	0	(109)
Purchases of loans held for sale	1,299,542	364,919
Proceeds from sales and repayments of loans held for sale	1,379,834	352,668
(Gain) loss on sale of loans held for sale and other assets	988	104
Changes in operating assets and liabilities:
Accrued interest receivable and other assets	19,548	(48,756)
Accrued interest payable and other liabilities	(927)	6,173
Net cash provided by operating activities	161,752	5,304
Investing activities
Purchases of available-for-sale securities	(18,832)	0
Maturities and calls of available-for-sale securities	275	264
Principal payments received on available-for-sale securities	1,231	1,620
Originations of mortgage finance loans	(15,100,024)	(19,706,715)
Proceeds from pay-offs of mortgage finance loans	16,225,764	19,691,687
Net increase in loans held for investment, excluding mortgage finance loans	(303,595)	(321,571)
Purchase of premises and equipment, net	(2,597)	(859)
Proceeds from sale of foreclosed assets	128	62
Net cash provided by (used in) investing activities	802,350	(335,903)
Financing activities
Net increase (decrease) in deposits	(411,451)	1,214,228
Costs from issuance of stock related to stock-based awards and warrants	(890)	(283)
Preferred dividends paid	(2,438)	(2,438)
Net increase in other borrowings	(500,000)	104,000
Excess tax benefits from stock-based compensation arrangements	0	109
Net increase (decrease) in Federal funds purchased and repurchase agreements	32,259	(42,192)
Net cash provided by (used in) financing activities	(882,520)	1,273,424
Net increase in cash and cash equivalents	81,582	942,825
Cash and cash equivalents at beginning of period	2,839,352	1,790,870
Cash and cash equivalents at end of period	2,920,934	2,733,695
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	22,792	17,237
Cash paid during the period for income taxes	482	333
Transfers from loans/leases to OREO and other repossessed assets	$ 0	$ 17,398

XML

OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

3 Months Ended

Mar. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Operations and summary of significant accounting policies

OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Organization and Nature of Business

Texas Capital Bancshares, Inc. (the “Company”), a Delaware corporation, was incorporated in November 1996 and commenced banking operations in December 1998. The consolidated financial statements of the Company include the accounts of Texas Capital Bancshares, Inc. and its wholly owned subsidiary, Texas Capital Bank, National Association (the “Bank”). We serve the needs of commercial businesses and successful professionals and entrepreneurs located in Texas as well as operate several lines of business serving a regional and national clientèle of commercial borrowers. We are primarily a secured lender, with our greatest concentration of loans in Texas.

Basis of Presentation

Our accounting and reporting policies conform to accounting principles generally accepted in the United States (“GAAP”) and to generally accepted practices within the banking industry. Certain prior period balances have been reclassified to conform to the current period presentation. In that regard, ASU 2016-09, "Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting," ("ASU 2016-09") became effective for us on January 1, 2017. ASU 2016-09 requires that excess tax benefits and deficiencies be recognized as a component of income taxes within the income statement. Additionally, ASU 2016-09 requires that all income tax-related cash flows resulting from share-based payments be reported as operating activities in the statement of cash flows. Previously, income tax benefits at award settlement were reported as a reduction to operating cash flows and an increase to financing cash flows to the extent that those benefits exceeded the income tax benefits reported in earnings during the award's vesting period. We have elected to apply that change in cash flow presentation on a prospective basis. ASU 2016-09 also requires that companies make an accounting policy election regarding forfeitures, to either estimate the number of awards that are expected to vest or account for them when they occur. We have elected to recognize forfeitures as they occur. The impact of this change and that of the remaining provisions of ASU 2016-09 did not have a significant impact on our financial statements.

The consolidated interim financial statements have been prepared without audit. Certain information and footnote disclosures presented in accordance with GAAP have been condensed or omitted. In the opinion of management, the interim financial statements include all normal and recurring adjustments and the disclosures made are adequate to make the interim financial information not misleading. The consolidated financial statements have been prepared in accordance with GAAP for interim financial information and the instructions to Form 10-Q adopted by the Securities and Exchange Commission (“SEC”). Accordingly, the financial statements do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with our consolidated financial statements, and notes thereto, for the year ended December 31, 2016, included in our Annual Report on Form 10-K filed with the SEC on February 17, 2017 (the “2016 Form 10-K”). Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period.

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. Actual results could differ from those estimates. The allowance for loan losses, the fair value of stock-based compensation awards, the fair values of financial instruments and the status of contingencies are particularly susceptible to significant change.

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EARNINGS PER COMMON SHARE

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

EARNINGS PER COMMON SHARE

EARNINGS PER COMMON SHARE

The following table presents the computation of basic and diluted earnings per share (in thousands except per share data):

	Three months ended   March 31,
	2017		2016
Numerator:
Net income	$	42,542	$	25,128
Preferred stock dividends	2,438		2,438
Net income available to common stockholders	$	40,104	22,690
Denominator:
Denominator for basic earnings per share— weighted average shares	49,535,959		45,888,735
Effect of employee stock-based awards(1)	260,947		117,372
Effect of warrants to purchase common stock	437,324		348,271
Denominator for dilutive earnings per share—adjusted weighted average shares and assumed conversions	50,234,230		46,354,378
Basic earnings per common share	$	0.81	$	0.49
Diluted earnings per common share	$	0.80	$	0.49

(1) SARs and RSUs outstanding of 3,000 at March 31, 2017 and 308,972 at March 31, 2016 have not been included in diluted earnings per share because to do so would have been anti-dilutive for the periods presented.

XML

SECURITIES

3 Months Ended

Mar. 31, 2017

Available-for-sale Securities [Abstract]

SECURITIES

SECURITIES

The following is a summary of available-for-sale securities (in thousands):

	March 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale securities:
U.S. Treasuries	$	16,688	$	—	$	(5	)	$	16,683
Residential mortgage-backed securities	13,449		927		—			14,376
Equity securities(1)	11,424		101		(381		)	11,144
	$	41,561	$	1,028	$	(386	)	$	42,203
	December 31, 2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale securities:
Residential mortgage-backed securities	$	14,680	$	972	$	—		$	15,652
Municipals	275		—		—			275
Equity securities(1)	9,280		27		(360		)	8,947
	$	24,235	$	999	$	(360	)	$	24,874

(1) Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.

The amortized cost and estimated fair value of available-for-sale securities are presented below by contractual maturity (in thousands, except percentage data):

	March 31, 2017
	Less Than One Year			After One Through Five Years			After Five Through Ten Years			After Ten Years			Total
Available-for-sale:
U.S. Treasuries:
Amortized cost	$	16,688		$	—		$	—		$	—		$	16,688
Estimated fair value	16,683			—			—			—			16,683
Weighted average yield(3)	0.53		%	—		%	—		%	—		%	0.53		%
Residential mortgage-backed securities:(1)
Amortized cost	47			1,522			2,925			8,955			13,449
Estimated fair value	47			1,572			3,253			9,504			14,376
Weighted average yield(3)	5.25		%	4.69		%	5.55		%	2.85		%	3.65		%
Equity securities:(4)
Amortized cost	11,424			—			—			—			11,424
Estimated fair value	11,144			—			—			—			11,144
Total available-for-sale securities:
Amortized cost													$	41,561
Estimated fair value													$	42,203

	December 31, 2016
	Less Than One Year			After One Through Five Years			After Five Through Ten Years			After Ten Years			Total
Available-for-sale:
Residential mortgage-backed securities:(1)
Amortized cost	$	9		$	2,047		$	3,147		$	9,477		$	14,680
Estimated fair value	9			2,104			3,495			10,044			15,652
Weighted average yield(3)	5.50		%	4.70		%	5.55		%	2.84		%	3.68		%
Municipals:(2)
Amortized cost	275			—			—			—			275
Estimated fair value	275			—			—			—			275
Weighted average yield(3)	5.61		%	—		%	—		%	—		%	5.61		%
Equity securities:(4)
Amortized cost	9,280			—			—			—			9,280
Estimated fair value	8,947			—			—			—			8,947
Total available-for-sale securities:
Amortized cost													$	24,235
Estimated fair value													$	24,874

(1) Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

(2) Yields have been adjusted to a tax equivalent basis assuming a 35% federal tax rate.

(3) Yields are calculated based on amortized cost.

(4) These equity securities do not have a stated maturity.

At March 31, 2017, securities with carrying values of $3.6 million and $9.4 million were pledged to secure certain deposits and repurchase agreements, respectively.

The following table discloses, as of March 31, 2017 and December 31, 2016, our investment securities that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 or more months (in thousands):

March 31, 2017	Less Than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
U.S. Treasuries	$	16,683	$	(5	)	$	—	$	—		$	16,683	$	(5	)
Equity securities	1,015		(6		)	6,125		(375		)	7,140		(381		)
	$	17,698	$	(11	)	$	6,125	$	(375	)	$	23,823	$	(386	)
December 31, 2016	Less Than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Equity securities	$	1,015	$	(6	)	$	6,146	$	(354	)	$	7,161	$	(360	)

At March 31, 2017, we owned five securities in an unrealized loss position, three of which are U.S. Treasury securities which are subject to interest rate volatility. We do not intend to sell the investments and it is not more likely than not that we will be required to sell the investments before recovery of their amortized cost bases. The remaining two are publicly traded equity funds and are subject to market pricing volatility. We do not believe these unrealized losses are “other-than-temporary”. We have evaluated the near-term prospects of the investments in relation to the severity and duration of the impairment and based on that evaluation have the ability and intent to hold the investments until recovery of fair value.

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LOANS AND ALLOWANCE FOR LOAN LOSSES

3 Months Ended

Mar. 31, 2017

Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]

Loans and allowance for credit losses

LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR LOAN LOSSES

At March 31, 2017 and December 31, 2016, loans held for investment were as follows (in thousands):

	March 31, 2017			December 31, 2016
Commercial	$	7,480,485		$	7,291,545
Mortgage finance	3,371,598			4,497,338
Construction	2,108,611			2,098,706
Real estate	3,563,136			3,462,203
Consumer	36,259			34,587
Leases	186,113			185,529
Gross loans held for investment	16,746,202			17,569,908
Deferred income (net of direct origination costs)	(75,686		)	(71,559		)
Allowance for loan losses	(172,013		)	(168,126		)
Total loans held for investment	$	16,498,503		$	17,330,223

Commercial Loans and Leases. Our commercial loan portfolio is comprised of lines of credit for working capital and term loans and leases to finance equipment and other business assets. Our energy production loans are generally collateralized with proven reserves based on appropriate valuation standards and take into account the risk of oil and gas price volatility. Our commercial loans and leases are underwritten after carefully evaluating and understanding the borrower’s ability to operate profitably. Our underwriting standards are designed to promote relationship banking rather than to make loans on a transaction basis. Our lines of credit typically are limited to a percentage of the value of the assets securing the line. Lines of credit and term loans typically are reviewed annually, or more frequently, as needed, and are supported by accounts receivable, inventory, equipment and other assets of our clients’ businesses.

Mortgage Finance Loans. Our mortgage finance loans consist of ownership interests purchased in single-family residential mortgages funded through our mortgage finance group. These loans are typically held on our balance sheet for 10 to 20 days. We have agreements with mortgage lenders and purchase interests in individual loans they originate. All loans are underwritten consistent with established programs for permanent financing with financially sound investors. Substantially all loans are conforming loans. Balances as of March 31, 2017 and December 31, 2016 are stated net of $230.5 million and $839.0 million participations sold, respectively.

Construction Loans. Our construction loan portfolio consists primarily of single- and multi-family residential properties and commercial projects used in manufacturing, warehousing, service or retail businesses. Our construction loans generally have terms of one to three years. We typically make construction loans to developers, builders and contractors that have an established record of successful project completion and loan repayment and have a substantial equity investment in the borrowers. Loan amounts are derived primarily from the Bank's evaluation of expected cash flows available to service debt from stabilized projects under hypothetically stressed conditions. Construction loans are also based in part upon estimates of costs and value associated with the completed project. Sources of repayment for these types of loans may be pre-committed permanent loans from other lenders, sales of developed property, or an interim loan commitment from us until permanent financing is obtained. The nature of these loans makes ultimate repayment sensitive to overall economic conditions. Borrowers may not be able to correct conditions of default in loans, increasing risk of exposure to classification, non-performing status, reserve allocation and actual credit loss and foreclosure. These loans typically have floating rates and commitment fees.

Real Estate Loans. A portion of our real estate loan portfolio is comprised of loans secured by properties other than market risk or investment-type real estate. Market risk loans are real estate loans where the primary source of repayment is expected to come from the sale, permanent financing or lease of the real property collateral. We generally provide temporary financing for commercial and residential property. These loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Our real estate loans generally have maximum terms of five to seven years, and we provide loans with both floating and fixed rates. We generally avoid long-term loans for commercial real estate held for investment. Real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy. Appraised values may be highly variable due to market conditions and the impact of the inability of potential purchasers and lessees to obtain financing and a lack of transactions at comparable values.

At March 31, 2017 and December 31, 2016, we had a blanket floating lien on certain real estate-secured loans, mortgage finance loans and certain securities used as collateral for Federal Home Loan Bank (“FHLB”) borrowings.

Summary of Loan Loss Experience

The allowance for loan losses is comprised of specific reserves for impaired loans and an additional qualitative reserve based on our estimate of losses inherent in the portfolio at the balance sheet date, but not yet identified with specified loans. We consider the allowance at March 31, 2017 to be appropriate, given management's assessment of losses inherent in the portfolio as of the evaluation date, the significant growth in the loan and lease portfolio, current economic conditions in our market areas and other factors.

The following tables summarize the credit risk profile of our loan portfolio by internally assigned grades and non-accrual status as of March 31, 2017 and December 31, 2016 (in thousands):

March 31, 2017
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Grade:
Pass	$	7,161,580	$	3,371,598	$	2,106,255	$	3,528,210	$	35,554	$	182,869	$	16,386,066
Special mention	51,723		—		2,356		12,904		370		3,161		70,514
Substandard-accruing	125,095		—		—		17,843		135		—		143,073
Non-accrual	142,087		—		—		4,179		200		83		146,549
Total loans held for investment	$	7,480,485	$	3,371,598	$	2,108,611	$	3,563,136	$	36,259	$	186,113	$	16,746,202
December 31, 2016
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Grade:
Pass	$	6,941,310	$	4,497,338	$	2,074,859	$	3,430,346	$	34,249	$	181,914	$	17,160,016
Special mention	69,447		—		10,901		21,932		—		3,532		105,812
Substandard-accruing	115,848		—		12,787		7,516		138		—		136,289
Non-accrual	164,940		—		159		2,409		200		83		167,791
Total loans held for investment	$	7,291,545	$	4,497,338	$	2,098,706	$	3,462,203	$	34,587	$	185,529	$	17,569,908

The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2017 and 2016. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.

March 31, 2017
(in thousands)	Commercial		Mortgage Finance		Construction			Real Estate			Consumer			Leases			Additional Qualitative Reserve			Total
Beginning balance	$	128,768	$	—	$	13,144		$	19,149		$	241		$	1,124		$	5,700		$	168,126
Provision for loan losses	8,147		—		(124		)	3,270			(31		)	325			(2,012		)	9,575
Charge-offs	9,233		—		—			—			—			—			—			9,233
Recoveries	3,381		—		101			50			5			8			—			3,545
Net charge-offs (recoveries)	5,852		—		(101		)	(50		)	(5		)	(8		)	—			5,688
Ending balance	$	131,063	$	—	$	13,121		$	22,469		$	215		$	1,457		$	3,688		$	172,013
Period end amount allocated to:
Loans individually evaluated for impairment	$	34,595	$	—	$	—		$	195		$	30		$	13		$	—		$	34,833
Loans collectively evaluated for impairment	96,468		—		13,121			22,274			185			1,444			3,688			137,180
Ending balance	$	131,063	$	—	$	13,121		$	22,469		$	215		$	1,457		$	3,688		$	172,013
March 31, 2016
(in thousands)	Commercial		Mortgage Finance		Construction			Real Estate			Consumer			Leases			Additional Qualitative Reserve			Total
Beginning balance	$	112,446	$	—	$	6,836		$	13,381		$	338		$	3,931		$	4,179		$	141,111
Provision for loan losses	26,581		—		1,050			1,134			(15		)	(2,435		)	2,480			28,795
Charge-offs	8,496		—		—			—			—			—			—			8,496
Recoveries	1,040		—		—			8			7			45			—			1,100
Net charge-offs (recoveries)	7,456		—		—			(8		)	(7		)	(45		)	—			7,396
Ending balance	$	131,571	$	—	$	7,886		$	14,523		$	330		$	1,541		$	6,659		$	162,510
Period end amount allocated to:
Loans individually evaluated for impairment	$	31,415	$	—	$	—		$	1,183		$	—		$	51		$	—		$	32,649
Loans collectively evaluated for impairment	100,156		—		7,886			13,340			330			1,490			6,659			129,861
Ending balance	$	131,571	$	—	$	7,886		$	14,523		$	330		$	1,541		$	6,659		$	162,510

The table below presents the activity in the portion of the allowance for credit losses related to losses on unfunded commitments for the three months ended March 31, 2017 and 2016 (in thousands). This liability is recorded in other liabilities in the consolidated balance sheet.

	Three months ended March 31,
	2017			2016
Beginning balance	$	11,422		$	9,011
Provision for off-balance sheet credit losses	(575		)	1,205
Ending balance	$	10,847		$	10,216

We have traditionally maintained an additional qualitative reserve component to compensate for the uncertainty and complexity in estimating loan and lease losses including factors and conditions that may not be fully reflected in the determination and application of the allowance allocation percentages. We believe the level of additional qualitative reserve at March 31, 2017 is warranted due to the continued uncertain economic environment which has produced losses, including those resulting from borrowers' misstatement of financial information or inaccurate certification of collateral values. Such losses are not necessarily correlated with historical loss trends or general economic conditions. Our methodology used to calculate the allowance considers historical losses; however, the historical loss rates for specific product types or credit risk grades may not fully incorporate the effects of continued weakness in the economy and continued volatility in the energy sector.

Our recorded investment in loans as of March 31, 2017, December 31, 2016 and March 31, 2016 related to each balance in the allowance for loan losses by portfolio segment and disaggregated on the basis of our impairment methodology was as follows (in thousands):

March 31, 2017
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	143,632	$	—	$	—	$	5,512	$	200	$	83	$	149,427
Loans collectively evaluated for impairment	7,336,853		3,371,598		2,108,611		3,557,624		36,059		186,030		16,596,775
Total	$	7,480,485	$	3,371,598	$	2,108,611	$	3,563,136	$	36,259	$	186,113	$	16,746,202
December 31, 2016
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	166,669	$	—	$	159	$	3,751	$	200	$	83	$	170,862
Loans collectively evaluated for impairment	7,124,876		4,497,338		2,098,547		3,458,452		34,387		185,446		17,399,046
Total	$	7,291,545	$	4,497,338	$	2,098,706	$	3,462,203	$	34,587	$	185,529	$	17,569,908
March 31, 2016
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	167,832	$	—	$	—	$	8,397	$	—	$	343	$	176,572
Loans collectively evaluated for impairment	6,721,967		4,981,304		1,958,370		3,128,584		26,439		104,117		16,920,781
Total	$	6,889,799	$	4,981,304	$	1,958,370	$	3,136,981	$	26,439	$	104,460	$	17,097,353

Generally we place loans on non-accrual when there is a clear indication that the borrower’s cash flow may not be sufficient to meet payments as they become due, which is generally when a loan is 90 days past due. When a loan is placed on non-accrual status, all previously accrued and unpaid interest is reversed. Interest income is subsequently recognized on a cash basis as long as the remaining unpaid principal amount of the loan is deemed to be fully collectible. If collectability is questionable, then cash payments are applied to principal. As of March 31, 2017, none of our non-accrual loans were earning on a cash basis compared to $811,000 at December 31, 2016. A loan is placed back on accrual status when both principal and interest are current and it is probable that we will be able to collect all amounts due (both principal and interest) according to the terms of the loan agreement.

A loan held for investment is considered impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due (both principal and interest) according to the terms of the original loan agreement. In accordance with ASC 310 Receivables, we have also included all restructured and formerly restructured loans in our impaired loan totals. The following tables detail our impaired loans, by portfolio class, as of March 31, 2017 and December 31, 2016 (in thousands):

March 31, 2017
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial
Business loans	$	25,149	$	30,093	$	—	$	24,295	$	—
Energy	39,050		39,306		—		44,185		—
Construction
Market risk	—		—		—		—		—
Real estate
Market risk	—		—		—		—		—
Commercial	2,618		2,618		—		2,261		—
Secured by 1-4 family	—		—		—		—		—
Consumer	—		—		—		—		—
Leases	—		—		—		—		—
Total impaired loans with no allowance recorded	$	66,817	$	72,017	$	—	$	70,741	$	—
With an allowance recorded:
Commercial
Business loans	$	26,146	$	26,146	$	8,378	$	22,917	$	—
Energy	53,287		71,555		26,217		67,592		6
Construction
Market risk	—		—		—		106		—
Real estate
Market risk	1,333		1,333		29		1,339		—
Commercial	—		—		—		—		—
Secured by 1-4 family	1,561		1,561		166		738		—
Consumer	200		200		30		200		—
Leases	83		83		13		83		—
Total impaired loans with an allowance recorded	$	82,610	$	100,878	$	34,833	$	92,975	$	6
Combined:
Commercial
Business loans	$	51,295	$	56,239	$	8,378	$	47,212	$	—
Energy	92,337		110,861		26,217		111,777		6
Construction
Market risk	—		—		—		106		—
Real estate
Market risk	1,333		1,333		29		1,339		—
Commercial	2,618		2,618		—		2,261		—
Secured by 1-4 family	1,561		1,561		166		738		—
Consumer	200		200		30		200		—
Leases	83		83		13		83		—
Total impaired loans	$	149,427	$	172,895	$	34,833	$	163,716	$	6

December 31, 2016
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial
Business loans	$	23,868	$	27,992	$	—	$	12,361	$	—
Energy	46,753		54,522		—		54,075		—
Construction
Market risk	—		—		—		2,778		—
Real estate
Market risk	—		—		—		—		—
Commercial	2,083		2,083		—		4,483		38
Secured by 1-4 family	—		—		—		—		—
Consumer	—		—		—		—		—
Leases	—		—		—		403		—
Total impaired loans with no allowance recorded	$	72,704	$	84,597	$	—	$	74,100	$	38
With an allowance recorded:
Commercial
Business loans	$	21,303	$	21,303	$	7,055	$	22,277	$	—
Energy	74,745		88,987		27,350		73,637		24
Construction
Market risk	159		159		24		53		—
Real estate
Market risk	1,342		1,342		20		3,000		—
Commercial	—		—		—		—		—
Secured by 1-4 family	326		326		113		435		—
Consumer	200		200		30		67		—
Leases	83		83		13		548		—
Total impaired loans with an allowance recorded	$	98,158	$	112,400	$	34,605	$	100,017	$	24
Combined:
Commercial
Business loans	$	45,171	$	49,295	$	7,055	$	34,638	$	—
Energy	121,498		143,509		27,350		127,712		24
Construction
Market risk	159		159		24		2,831		—
Real estate
Market risk	1,342		1,342		20		3,000		—
Commercial	2,083		2,083		—		4,483		38
Secured by 1-4 family	326		326		113		435		—
Consumer	200		200		30		67		—
Leases	83		83		13		951		—
Total impaired loans	$	170,862	$	196,997	$	34,605	$	174,117	$	62

Average impaired loans outstanding during the three months ended March 31, 2017 and 2016 totaled $163.7 million and $181.1 million, respectively.

The table below provides an age analysis of our loans held for investment as of March 31, 2017 (in thousands):

	30-59 Days Past Due		60-89 Days Past Due		Greater Than 90 Days and Accruing(1)		Total Past Due		Non-accrual		Current		Total
Commercial
Business loans	$	30,716	$	6,923	$	7,359	$	44,998	$	49,750	$	6,484,545	$	6,579,293
Energy	—		—		—		—		92,337		808,855		901,192
Mortgage finance loans	—		—		—		—		—		3,371,598		3,371,598
Construction
Market risk	2,553		—		—		2,553		—		2,081,308		2,083,861
Secured by 1-4 family	—		—		—		—		—		24,750		24,750
Real estate
Market risk	112		—		1,333		1,445		—		2,652,833		2,654,278
Commercial	—		274		—		274		2,618		689,414		692,306
Secured by 1-4 family	4,225		—		107		4,332		1,561		210,659		216,552
Consumer	360		98		—		458		200		35,601		36,259
Leases	—		—		—		—		83		186,030		186,113
Total loans held for investment	$	37,966	$	7,295	$	8,799	$	54,060	$	146,549	$	16,545,593	$	16,746,202

(1) Loans past due 90 days and still accruing includes premium finance loans of $5.1 million. These loans are generally secured by obligations of insurance carriers to refund premiums on canceled insurance policies. The refund of premiums from the insurance carriers can take 180 days or longer from the cancellation date.

Restructured loans are loans on which, due to the borrower’s financial difficulties, we have granted a concession that we would not otherwise consider for borrowers of similar credit quality. This may include a transfer of real estate or other assets from the borrower, a modification of loan terms, or a combination of the two. Modifications of terms that could potentially qualify as a restructuring include reduction of the contractual interest rate, extension of the maturity date at a contractual interest rate lower than the current rate for new debt with similar risk, a reduction of the face amount of debt or forgiveness of either principal or accrued interest. At March 31, 2017 and December 31, 2016, we did not have any loans considered restructured that were not on non-accrual. Of the non-accrual loans at March 31, 2017 and December 31, 2016, $18.5 million and $18.1 million, respectively, met the criteria for restructured. These loans had no unfunded commitments at their respective balance sheet dates. A loan continues to qualify as restructured until a consistent payment history or change in borrower’s financial condition has been evidenced, generally over no less than twelve months. Assuming that the restructuring agreement specifies an interest rate at the time of the restructuring that is greater than or equal to the rate that we are willing to accept for a new extension of credit with comparable risk, then the loan no longer has to be considered a restructuring if it is in compliance with the modified terms in calendar years after the year of the restructure.

The following table summarizes, for the three months ended March 31, 2017 and 2016, loans that were restructured during 2017 and 2016 (in thousands):

March 31, 2017
	Number of Restructured Loans	Pre-Restructuring Outstanding Recorded Investment		Post-Restructuring Outstanding Recorded Investment
Energy loans	1	$	1,070	$	1,070
Commercial business loans	1	$	599	$	599
Total new restructured loans in 2017	2	$	1,669	$	1,669
March 31, 2016
	Number of Restructured Loans	Pre-Restructuring Outstanding Recorded Investment		Post-Restructuring Outstanding Recorded Investment
Energy loans	2	$	14,235	$	14,235
Total new restructured loans in 2016	2	$	14,235	$	14,235

The restructured loans generally include terms to temporarily place loans on interest only, extend the payment terms or reduce the interest rate. We did not forgive any principal on the above loans. The restructuring of the loans did not have a significant impact on our allowance for loan losses at March 31, 2017 or 2016.

The following table provides information on how restructured loans were modified during the three months ended March 31, 2017 and 2016 (in thousands):

	Three months ended March 31,
	2017		2016
Extended maturity	$	1,070	$	—
Adjusted payment schedule	—		12,916
Combination of maturity extension and payment schedule adjustment	—		1,319
Other	599		—
Total	$	1,669	$	14,235

As of March 31, 2017 and 2016, we did not have any loans that were restructured within the last 12 months that subsequently defaulted.

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OREO AND VALUATION ALLOWANCE FOR LOSSES ON OREO

3 Months Ended

Mar. 31, 2017

Real Estate Owned, Disclosure of Detailed Components [Abstract]

OREO AND VALUATION ALLOWANCE FOR LOSSES ON OREO

OREO AND VALUATION ALLOWANCE FOR LOSSES ON OREO

The table below presents a summary of the activity related to OREO (in thousands):

	Three months ended March 31,
	2017			2016
Beginning balance	$	18,961		$	278
Additions	—			17,398
Sales	(128		)	(91		)
Valuation allowance for OREO	—			—
Direct write-downs	—			—
Ending balance	$	18,833		$	17,585

When foreclosure occurs, the acquired asset is recorded at fair value less selling costs, generally based on appraised value, which may result in partial charge-off of the loan. Subsequent write-downs required for declines in value are recorded through a valuation allowance or taken directly to the assets, charged to other non-interest expense. We did not record a valuation allowance during the three months endedMarch 31, 2017 and 2016.

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CERTAIN TRANSFERS OF FINANCIAL ASSETS (Notes)

3 Months Ended

Mar. 31, 2017

Transfers and Servicing [Abstract]

CERTAIN TRANSFERS OF FINANCIAL ASSETS

CERTAIN TRANSFERS OF FINANCIAL ASSETS

Through our Mortgage Correspondent Aggregation ("MCA") business, we commit to purchase residential mortgage loans from independent correspondent lenders and deliver those loans into the secondary market via whole loan sales to independent third parties or in securitization transactions to Ginnie Mae and government sponsored entities ("GSEs") such as Fannie Mae and Freddie Mac. We have elected to carry these loans at fair value based on sales commitments and market quotes. Changes in the fair value of the loans held for sale are included in other non-interest income.

Residential mortgage loans are subject to both credit and interest rate risk. Credit risk is managed through underwriting policies and procedures, including collateral requirements, which are generally accepted by the secondary loan markets. Exposure to interest rate fluctuations is partially managed through forward sales contracts, which set the price for loans that will be delivered in the next 60 to 90 days.

The table below presents the unpaid principal balance of loans held for sale and related fair values at March 31, 2017 and December 31, 2016 (in thousands):

	March 31, 2017		December 31, 2016
Unpaid principal balance	$	880,156	$	980,414
Fair value	884,647		968,929
Fair value over/(under) unpaid principal balance	$	4,491	$	(11,485	)

No loans held for sale were 90 days or more past due or on non-accrual as of March 31, 2017 and December 31, 2016.

The table below presents a reconciliation of the changes in loans held for sale for the three months endedMarch 31, 2017 and 2016 (in thousands):

	Three months ended March 31,
	2017			2016
Beginning balance	$	968,929		$	86,075
Loans purchased	1,299,542			364,919
Payments and loans sold	(1,399,800		)	(357,018		)
Change in fair value	15,976			726
Ending balance	$	884,647		$	94,702

We generally retain the right to service the loans sold, creating mortgage servicing rights ("MSRs") which are recorded as assets on our balance sheet. A summary of MSR activity for the three months endedMarch 31, 2017 and 2016 is as follows (in thousands):

	Three months ended March 31,
	2017			2016
Servicing asset:
Balance, beginning of year(1)	$	28,536		$	423
Capitalized servicing rights	18,094			3,903
Amortization	(1,104		)	(40		)
Balance, end of period	$	45,526		$	4,286
Valuation allowance:
Balance, beginning of year	$	—		$	—
Increase in valuation allowance	—			33
Balance, end of period	$	—		$	33
Servicing asset, net(1)	$	45,526		$	4,253
Fair value	$	48,013		$	4,253

(1) MSRs are reported on the consolidated balance sheets at lower of cost or market.

At March 31, 2017 and December 31, 2016, our servicing portfolio of residential mortgage loans sold included 13,955 and 8,618 loans, respectively, with an outstanding principal balance of $3.5 billion and $2.2 billion, respectively. In connection with the servicing of these loans, we maintain escrow funds for taxes and insurance in the name of investors, as well as collections in transit to investors. These escrow funds are segregated and held in separate non-interest-bearing accounts at the Bank. These deposits, included in total non-interest-bearing deposits on the consolidated balance sheets, were $31.4 million at March 31, 2017 and $21.0 million at December 31, 2016.

The estimated fair value of the MSR assets is obtained from an independent third party on a quarterly basis. MSRs do not trade in an active, open market with readily observable prices; as such, the fair value of MSRs is determined using a discounted cash flow model to calculate the present value of the estimated future net servicing income. The assumptions utilized in the discounted cash flow model are based on market data for comparable collateral, where available. Each quarter, management and the independent third party discuss the key assumptions used in the discounted cash flow model and make adjustments as necessary to estimate the fair value of the MSRs. As of March 31, 2017 and December 31, 2016, management used the following assumptions to determine the fair value of MSRs:

	March 31, 2017		December 31, 2016
Average discount rates	9.91	%	9.96	%
Expected prepayment speeds	8.10	%	7.91	%
Weighted average life, in years	7.9		8.0

A sensitivity analysis of changes in the fair value of our MSR portfolio resulting from certain key assumptions is presented in the following table (in thousands):

	March 31, 2017			December 31, 2016
50 bp adverse change in prepayment speed	$	(4,471	)	$	(2,833	)
100 bp adverse change in prepayment speed	(10,835		)	(6,812		)

These sensitivities are hypothetical and should be evaluated with care. The effect on fair value of a 10% variation in assumptions generally cannot be determined because the relationship of the change in assumptions to the fair value may not be linear. Additionally, the impact of a variation in a particular assumption on the fair value is calculated while holding other assumptions constant. In reality, changes in one factor may lead to changes in other factors, which could impact the above hypothetical effects. Also, a positive change in the above assumptions would not necessarily correlate with the corresponding decrease in the net carrying amount of the excess spread financing.

In conjunction with the sale and securitization of loans held for sale, we may be exposed to liability resulting from recourse agreements and repurchase agreements. If it is determined subsequent to our sale of a loan that the loan sold is in breach of the representations or warranties made in the applicable sale agreement, we may have an obligation to either (a) repurchase the loan for the unpaid principal balance, accrued interest and related advances, (b) indemnify the purchaser against any loss it suffers or (c) make the purchaser whole for the economic benefits of the loan.

Our repurchase, indemnification and make whole obligations vary based upon the terms of the applicable agreements, the nature of the asserted breach and the status of the mortgage loan at the time a claim is made. We establish reserves for estimated losses of this nature inherent in the origination of mortgage loans by estimating the losses inherent in the population of all loans sold based on trends in claims and actual loss severities experienced. The reserve includes accruals for probable contingent losses in addition to those identified in the pipeline of claims received. The estimation process is designed to include amounts based on any actual losses experienced from actual repurchase activity.

Because the MCA business commenced in late 2015, we have limited historical data to support the establishment of a reserve. The baseline for the repurchase reserve uses historical loss factors obtained from industry data that are applied to loan pools originated and sold during the three months endedMarch 31, 2017 and 2016. The historical industry data loss factors and experienced losses are accumulated for each sale vintage (year loan was sold) and applied to more recent sale vintages to estimate inherent losses not yet realized. Our estimated exposure related to these loans was $971,000 at March 31, 2017 and $178,000 at March 31, 2016 and is recorded in other liabilities in the consolidated balance sheets. We had no losses due to repurchase, indemnification or make-whole obligations during the three months endedMarch 31, 2017 and 2016.

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FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK

3 Months Ended

Mar. 31, 2017

Risks and Uncertainties [Abstract]

FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK

FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK

The Bank is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit that involve varying degrees of credit risk in excess of the amount recognized in the consolidated balance sheets. The Bank’s exposure to credit loss in the event of non-performance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual amount of these instruments. The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The amount of collateral obtained, if deemed necessary, is based on management’s credit evaluation of the borrower.

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Bank evaluates each customer’s credit-worthiness on a case-by-case basis.

Standby letters of credit are conditional commitments issued by the Bank to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers.

The table below summarizes our off-balance sheet financial instruments whose contract amounts represented credit risk (in thousands):

	March 31, 2017		December 31, 2016
Commitments to extend credit	$	5,829,713	$	5,704,381
Standby letters of credit	171,451		171,266

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REGULATORY MATTERS

3 Months Ended

Mar. 31, 2016

Regulatory Capital Requirements [Abstract]

REGULATORY MATTERS

REGULATORY MATTERS

The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory (and possibly additional discretionary) actions by regulators that, if undertaken, could have a direct material effect on the Company’s and the Bank’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of the Company’s and the Bank’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The Company’s and the Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

The Basel III regulatory capital framework (the "Basel III Capital Rules") adopted by U.S. federal regulatory authorities, among other things, (i) establish the capital measure called "Common Equity Tier 1" ("CET1"), (ii) specify that Tier 1 capital consist of CET1 and "Additional Tier 1 Capital" instruments meeting stated requirements, (iii) define CET1 narrowly by requiring that most deductions/adjustments to regulatory capital measures be made to CET1 and not to the other components of capital and (iv) set forth the acceptable scope of deductions/adjustments to the specified capital measures. The Basel III Capital Rules became effective for us on January 1, 2015 with certain transition provisions fully phased in on January 1, 2019.

Additionally, the Basel III Capital Rules require that we maintain a capital conservation buffer with respect to each of the CET1, Tier 1 and total capital to risk-weighted assets, which provides for capital levels that exceed the minimum risk-based capital adequacy requirements. The capital conservation buffer is subject to a three year phase-in period that began on January 1, 2016 and will be fully phased in on January 1, 2019 at 2.5%. The required phase-in capital conservation buffer during 2017 is 1.25% and was 0.625% during 2016. A financial institution with a conservation buffer of less than the required amount is subject to limitations on capital distributions, including dividend payments and stock repurchases, and certain discretionary bonus payments to executive officers.

Quantitative measures established by these regulations to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios of CET1, Tier 1 and total capital to risk-weighted assets, and of Tier 1 capital to average assets, each as defined in the regulations. Management believes, as of March 31, 2017, that the Company and the Bank met all capital adequacy requirements to which they are subject.

Financial institutions are categorized as well capitalized or adequately capitalized, based on minimum total risk-based capital, Tier 1 risk-based capital, CET1 and Tier 1 leverage ratios. As shown in the table below, the Company’s capital ratios exceeded the regulatory definition of adequately capitalized as of March 31, 2017, and December 31, 2016. Based upon the information in its most recently filed call report, the Bank met the capital ratios necessary to be well capitalized. The regulatory authorities can apply changes in classification of assets and such changes may retroactively subject the Company to changes in capital ratios. Any such changes could result in reducing one or more capital ratios below well-capitalized status. In addition, a change may result in imposition of additional assessments by the FDIC or could result in regulatory actions that could have a material adverse effect on our financial condition and results of operations.

Because our Bank had less than $15.0 billion in total consolidated assets as of December 31, 2009, we are allowed to continue to classify our trust preferred securities, all of which were issued prior to May 19, 2010, as Tier 1 capital.

The table below summarizes our actual and required capital ratios under the Basel III Capital Rules:

	Actual				Minimum Capital Required - Basel III Phase-In Schedule				Minimum capital Required - Basel III Fully Phased-In				Required to be Considered Well Capitalized
	Capital Amount		Ratio		Capital Amount		Ratio		Capital Amount		Ratio		Capital Amount	Ratio
As of March 31, 2017:
CET1
Company	$	1,881,329	9.61	%	$	1,125,456	5.75	%	$	1,370,121	7.00	%	N/A	N/A
Bank	1,778,152		9.09	%	1,125,405		5.75	%	1,370,058		7.00	%	1,272,197	6.50	%
Total capital (to risk-weighted assets)
Company	2,603,536		13.30	%	1,810,516		9.25	%	2,055,181		10.50	%	N/A	N/A
Bank	2,341,922		11.97	%	1,810,434		9.25	%	2,055,088		10.50	%	1,957,226	10.00	%
Tier 1 capital (to risk-weighted assets)
Company	2,139,542		10.93	%	1,419,053		7.25	%	1,663,718		8.50	%	N/A	N/A
Bank	1,936,365		9.89	%	1,418,989		7.25	%	1,663,642		8.50	%	1,565,781	8.00	%
Tier 1 capital (to average assets)(1)
Company	2,139,542		10.27	%	833,706		4.00	%	833,706		4.00	%	N/A	N/A
Bank	1,936,365		9.29	%	833,510		4.00	%	833,510		4.00	%	1,041,888	5.00	%
As of December 31, 2016:
CET1
Company	$	1,841,219	8.97	%	$	1,052,205	5.125	%	$	1,437,159	7.00	%	N/A	N/A
Bank	1,735,496		8.45	%	1,051,989		5.125	%	1,436,863		7.00	%	1,334,244	6.50	%
Total capital (to risk-weighted assets)
Company	2,561,663		12.48	%	1,770,766		8.625	%	2,155,715		10.50	%	N/A	N/A
Bank	2,297,528		11.19	%	1,770,421		8.625	%	2,155,295		10.50	%	2,052,683	10.00	%
Tier 1 capital (to risk-weighted assets)
Company	2,101,071		10.23	%	1,360,154		6.625	%	1,745,103		8.50	%	N/A	N/A
Bank	1,895,348		9.23	%	1,359,888		6.625	%	1,744,762		8.50	%	1,642,147	8.00	%
Tier 1 capital (to average assets)(1)
Company	2,101,071		9.34	%	900,268		4.00	%	900,268		4.00	%	N/A	N/A
Bank	1,895,348		8.42	%	900,070		4.00	%	900,070		4.00	%	1,125,087	5.00	%

(1) The Tier 1 capital ratio (to average assets) is not impacted by the Basel III Capital Rules; however, it should be noted that the Federal Reserve Board and the FDIC may require the Company and the Bank, respectively, to maintain a Tier 1 capital ratio (to average assets) above the required minimum.

Our mortgage finance loan volumes can increase significantly at month-end, causing a meaningful difference between ending balance and average balance for any period. At March 31, 2017, our total mortgage finance loans were $3.4 billion compared to the average for the quarter ended March 31, 2017 of $2.8 billion. As CET1, Tier 1 and total capital ratios are calculated using quarter-end risk-weighted assets and our mortgage finance loans are 100% risk-weighted, the quarter-end fluctuation in these balances can significantly impact our reported ratios. We manage capital allocated to mortgage finance loans based on changing trends in average balances, as well as the inherent risk associated with the assets which implies a risk weight that is significantly different than the regulatory risk weight, and do not believe that the quarter-end balance is representative of risk characteristics that would justify higher capital allocations. However, we continue to monitor our capital allocation to confirm that all capital levels remain above well-capitalized levels.

Dividends that may be paid by subsidiary banks are routinely restricted by various regulatory authorities. The amount that can be paid in any calendar year without prior approval of the Bank’s regulatory agencies cannot exceed the lesser of the net profits (as defined) for that year plus the net profits for the preceding two calendar years, or retained earnings. The Basel III Capital Rules further limit the amount of dividends that may be paid by our Bank. No dividends were declared or paid on common stock during the three months endedMarch 31, 2017 or 2016.

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STOCK-BASED COMPENSATION

3 Months Ended

Mar. 31, 2017

Compensation Related Costs [Abstract]

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION

We have long-term incentive plans under which stock-based compensation awards are granted to employees and directors by the board of directors, or its designated committee. Grants are subject to vesting requirements and may include, among other things, nonqualified stock options, stock appreciation rights ("SARs"), restricted stock units ("RSUs"), restricted stock and performance units, or any combination thereof. There are 2,550,000 total shares authorized under the plans.

Stock-based compensation expense presented below consists of awards granted from 2011 through March 31, 2017.

	Three months ended March 31,
(in thousands)	2017		2016
Stock-settled awards:
SARs	$	72	$	82
RSUs	1,593		1,048
Restricted stock	4		2
Cash-settled performance units	2,890		(673		)
Total	$	4,559	$	459

(in thousands)	March 31, 2017
Unrecognized compensation expense related to unvested stock-settled awards	$	20,117
Weighted average period over which expense is expected to be recognized, in years	3.2

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FAIR VALUE DISCLOSURES

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

FAIR VALUE DISCLOSURES

FAIR VALUE DISCLOSURES

ASC 820, Fair Value Measurements and Disclosures (“ASC 820”), defines fair value, establishes a framework for measuring fair value under GAAP and requires enhanced disclosures about fair value measurements. Fair value is defined under ASC 820 as the price that would be received for an asset or paid to transfer a liability (an exit price) in the principal market for the asset or liability in an orderly transaction between market participants on the measurement date.

We determine the fair market values of our assets and liabilities measured at fair value on a recurring and nonrecurring basis using the fair value hierarchy as prescribed in ASC 820. The standard describes three levels of inputs that may be used to measure fair value as provided below.

Level 1 Quoted prices in active markets for identical assets or liabilities. This category includes the assets and liabilities related to our non-qualified deferred compensation plan where values are based on quoted market prices for identical equity securities in an active market.

Level 2 Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 assets include U.S. Treasuries, U.S. government and agency mortgage-backed debt securities, municipal bonds, and Community Reinvestment Act funds. This category also includes loans held for sale and derivative assets and liabilities where values are obtained from independent pricing services.

Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair values requires significant management judgment or estimation. This category includes impaired loans and OREO where collateral values have been based on third party appraisals; comparative sales data typically used in appraisals may be unavailable or more subjective with respect to some asset classes due to lack of market activity.

Assets and liabilities measured at fair value at March 31, 2017 and December 31, 2016 are as follows (in thousands):

	Fair Value Measurements Using
March 31, 2017	Level 1		Level 2		Level 3
Available-for-sale securities:(1)
U.S. Treasuries	$	—	$	16,683	$	—
Residential mortgage-backed securities	—		14,376		—
Equity securities(2)	4,004		7,140		—
Loans held for sale (3)	—		884,647		—
Loans held for investment(4) (6)	—		—		50,780
OREO(5) (6)	—		—		18,833
Derivative assets(7)	—		24,245		—
Derivative liabilities(7)	—		27,697		—
Non-qualified deferred compensation plan liabilities (8)	4,040		—		—
December 31, 2016
Available-for-sale securities:(1)
Residential mortgage-backed securities	$	—	$	15,652	$	—
Municipals	—		275		—
Equity securities(2)	1,786		7,161		—
Loans held for sale(3)	—		968,929		—
Loans held for investment(4) (6)	—		—		52,323
OREO(5) (6)	—		—		18,961
Derivative assets(7)	—		37,878		—
Derivative liabilities(7)	—		26,240		—
Non-qualified deferred compensation plan liabilities (8)	1,811		—		—

(1) Securities are measured at fair value on a recurring basis, generally monthly.

(2) Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.

(3) Loans held for sale are measured at fair value on a recurring basis, generally monthly.

(4) Includes impaired loans that have been measured for impairment at the fair value of the loan’s collateral.

(5) OREO is transferred from loans to OREO at fair value less selling costs.

(6) Loans held for investment and OREO are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions.

(7) Derivative assets and liabilities are measured at fair value on a recurring basis, generally quarterly.

(8) Non-qualified deferred compensation plan liabilities represent the fair value of the obligation to the employee, which corresponds to the fair value of the invested assets, and are measured at fair value on a recurring basis, generally monthly.

Level 3 Valuations

Financial instruments are considered Level 3 when their values are determined using pricing models, discounted cash flow methodologies or similar techniques and at least one significant model assumption or input is unobservable. Level 3 financial instruments include those for which the determination of fair value requires significant management judgment or estimation. Currently, we measure the fair value for certain loans and OREO on a nonrecurring basis as described below.

Loans held for investment

At March 31, 2017 and December 31, 2016, certain impaired loans held for investment were reported at fair value through a specific allocation of the allowance for loan losses based upon the fair value of the underlying collateral. The $50.8 million fair value of loans held for investment at March 31, 2017 reported above includes impaired loans held for investment with a carrying value of $70.1 million that were reduced by specific allowance allocations totaling $19.3 million based on collateral valuations utilizing Level 3 valuation inputs. The $52.3 million fair value of loans held for investment at December 31, 2016 reported fair value above includes impaired loans with a carrying value of $74.1 million that were reduced by specific valuation allowance allocations totaling $21.8 million based on collateral valuations utilizing Level 3 valuation inputs. Fair values were based on third party appraisals.

OREO

Certain foreclosed assets, upon initial recognition, are recorded at fair value less estimated selling costs. At March 31, 2017 and December 31, 2016, OREO had a carrying value of $18.8 million and $19.0 million, respectively, with no specific valuation allowance. The fair value of OREO was computed based on third party appraisals, which are Level 3 valuation inputs.

Fair Value of Financial Instruments

GAAP requires disclosure of fair value information about financial instruments, whether or not recognized on the balance sheet, for which it is practical to estimate that value. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. This disclosure does not and is not intended to represent the fair value of the Company.

A summary of the carrying amounts and estimated fair values of financial instruments is as follows (in thousands):

	March 31, 2017				December 31, 2016
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Financial assets:
Level 1 inputs:
Cash and cash equivalents	$	2,920,934	$	2,920,934	$	2,839,352	$	2,839,352
Securities, available-for-sale	4,004		4,004		1,786		1,786
Level 2 inputs:
Securities, available-for-sale	38,199		38,199		23,088		23,088
Loans held for sale	884,647		884,647		968,929		968,929
Derivative assets	24,245		24,245		37,878		37,878
Level 3 inputs:
Loans held for investment, net	16,498,503		16,507,087		17,330,223		17,347,199
Financial liabilities:
Level 2 inputs:
Federal funds purchased	134,539		134,539		101,800		101,800
Customer repurchase agreements	7,295		7,295		7,775		7,775
Other borrowings	1,500,000		1,500,000		2,000,000		2,000,000
Subordinated notes	281,134		330,552		281,044		304,672
Derivative liabilities	27,697		27,697		26,240		26,240
Level 3 inputs:
Deposits	16,605,380		16,604,650		17,016,831		17,017,221
Trust preferred subordinated debentures	113,406		113,406		113,406		113,406

The following methods and assumptions were used by the Company in estimating its fair value disclosures for financial instruments:

Cash and cash equivalents

The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents approximate their fair value, and these financial instruments are characterized as Level 1 assets in the fair value hierarchy.

Securities available-for-sale

Within the securities available-for-sale portfolio, we hold equity securities related to our non-qualified deferred compensation plan which are valued using quoted market prices for identical equity securities in an active market. These financial instruments are classified as Level 1 assets in the fair value hierarchy. The fair value of the remaining investment portfolio is based on prices obtained from independent pricing services which are based on quoted market prices for the same or similar securities, and these financial instruments are characterized as Level 2 assets in the fair value hierarchy. We have obtained documentation from the primary pricing service we use about their processes and controls over pricing. In addition, on a quarterly basis we independently verify the prices that we receive from the service provider using two additional independent pricing sources. Any significant differences are investigated and resolved.

Loans held for sale

Fair value for loans held for sale is derived from quoted market prices for similar loans, and these financial instruments are characterized as Level 2 assets in the fair value hierarchy.

Loans held for investment, net

Loans held for investment are characterized as Level 3 assets in the fair value hierarchy. For variable-rate loans held for investment that reprice frequently with no significant change in credit risk, fair values are generally based on carrying values. The fair value for all other loans held for investment is estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. The carrying amount of accrued interest approximates its fair value.

Derivatives

The estimated fair value of the interest rate swaps and caps is obtained from independent pricing services based on quoted market prices for similar derivative contracts and these financial instruments are characterized as Level 2 assets and liabilities in the fair value hierarchy. On a quarterly basis, we independently verify the fair value using an additional independent pricing source. Any significant differences are investigated and resolved. The derivative instruments related to the loans held for sale portfolio include loan purchase commitments and forward sales commitments. Loan purchase commitments are valued based upon the fair value of the underlying mortgage loans to be purchased, which is based on observable market data for similar loans. Forward sales commitments are valued based upon the quoted market prices from brokers. As such, these loan purchase commitments and forward sales commitments are classified as Level 2 assets or liabilitites in the fair value hierarchy.

Deposits

Deposits are characterized as Level 3 liabilities in the fair value hierarchy. The carrying amounts for variable-rate money market accounts approximate their fair value.The fair values of fixed-term certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities.

Federal funds purchased, customer repurchase agreements, other borrowings, subordinated notes and trust preferred subordinated debentures

The carrying value reported in the consolidated balance sheets for Federal funds purchased, customer repurchase agreements and other short-term, floating rate borrowings approximates their fair value, and these financial instruments are characterized as Level 2 liabilities in the fair value hierarchy. The fair value of any fixed rate short-term borrowings and trust preferred subordinated debentures are estimated using a discounted cash flow calculation that applies interest rates currently being offered on similar borrowings, and these financial instruments are characterized as Level 3 liabilities in the fair value hierarchy. The subordinated notes are publicly, though infrequently, traded and are valued based on market prices, and are characterized as Level 2 liabilities in the fair value hierarchy.

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DERIVATIVE FINANCIAL INSTRUMENTS

3 Months Ended

Mar. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVE FINANCIAL INSTRUMENTS

DERIVATIVE FINANCIAL INSTRUMENTS

The fair value of derivative positions outstanding is included in accrued interest receivable and other assets and other liabilities in the accompanying consolidated balance sheets on a net basis when a right of offset exists, based on transactions with a single counterparty that are subject to a legally enforceable master netting agreement.

During the three months ended March 31, 2017 and 2016, we entered into certain interest rate derivative positions that were not designated as hedging instruments. These derivative positions relate to transactions in which we enter into an interest rate swap, cap and/or floor with a customer while at the same time entering into an offsetting interest rate swap, cap and/or floor with another financial institution. In connection with each swap transaction, we agree to pay interest to the customer on a notional amount at a variable interest rate and receive interest from the customer on a similar notional amount at a fixed interest rate. At the same time, we agree to pay another financial institution the same fixed interest rate on the same notional amount and receive the same variable interest rate on the same notional amount. The transaction allows our customer to effectively convert a variable rate loan to a fixed rate. Because we act as an intermediary for our customer, changes in the fair value of the underlying derivative contracts substantially offset each other and do not have a material impact on our results of operations.

During the three months ended March 31, 2017 and 2016, we entered into loan purchase commitment contracts with mortgage originators to purchase residential mortgage loans at a future date, as well as forward sales commitment contracts to sell residential mortgage loans at a future date.

The notional amounts and estimated fair values of interest rate derivative positions outstanding at March 31, 2017 and December 31, 2016 are presented in the following tables (in thousands):

	March 31, 2017								December 31, 2016
	Estimated Fair Value								Estimated Fair Value
	Notional Amount		Asset Derivative			Liability Derivative			Notional Amount		Asset Derivative			Liability Derivative
Non-hedging interest rate derivatives:
Financial institution counterparties:
Commercial loan/lease interest rate swaps	$	1,256,666	$	2,398		$	22,489		$	1,144,367	$	1,754		$	25,421
Commercial loan/lease interest rate caps	231,125		639			—			210,996		819			—
Customer counterparties:
Commercial loan/lease interest rate swaps	1,256,666		22,489			2,398			1,144,367		25,421			1,754
Commercial loan/lease interest rate caps	231,125		—			639			210,996		—			819
Economic hedging interest rate derivatives:
Loan purchase commitments	222,492		1,117			—			237,805		1,351			—
Forward sales commitments	1,030,393		—			4,569			1,218,000		10,287			—
Gross derivatives			26,643			30,095					39,632			27,994
Offsetting derivative assets/liabilities			(2,398		)	(2,398		)			(1,754		)	(1,754		)
Net derivatives included in the consolidated balance sheets			$	24,245		$	27,697				$	37,878		$	26,240

The weighted average received and paid interest rates for interest rate swaps outstanding at March 31, 2017 and December 31, 2016 were as follows:

	March 31, 2017 Weighted Average Interest Rate				December 31, 2016 Weighted Average Interest Rate
	Received		Paid		Received		Paid
Non-hedging interest rate swaps	3.40	%	4.61	%	3.17	%	4.58	%

The weighted average strike rate for outstanding interest rate caps was 2.44% at March 31, 2017 and 2.45% at December 31, 2016.

Our credit exposure on derivative instruments is limited to the net favorable value and interest payments by each counterparty. In such cases collateral may be required from the counterparties involved if the net value of the derivative instruments exceed a nominal amount considered to be immaterial. Our credit exposure, net of any collateral pledged, was approximately $24.2 million at March 31, 2017 and approximately $37.9 million at December 31, 2016, which primarily relates to Bank customers. Collateral levels are monitored and adjusted on a regular basis for changes in interest rate swap and cap values. At March 31, 2017, we had $26.5 million in cash collateral pledged for these derivatives, of which $24.1 million was included in interest-bearing deposits and $2.4 million was included in accrued interest receivable and other assets. At December 31, 2016, we had $24.8 million in cash collateral pledged for these derivatives, all of which was included in interest-bearing deposits.

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NEW ACCOUNTING PRONOUNCEMENTS

3 Months Ended

Mar. 31, 2017

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

NEW ACCOUNTING PRONOUNCEMENTS

NEW ACCOUNTING PRONOUNCEMENTS

ASU 2016-15 "Statement of Cash Flows (Topic 230)" ("ASU 2016-15") is intended to reduce the diversity in practice around how certain transactions are classified within the statement of cash flows. ASU 2016-15 is effective for public companies for annual periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted with retrospective application. We are evaluating the impact adoption of ASU 2016-15 will have on our consolidated financial statements.

ASU 2016-13 "Financial Instruments - Credit Losses (Topic 326)" ("ASU 2016-13") requires an entity to utilize a new impairment model known as the current expected credit loss ("CECL") model to estimate its lifetime "expected credit loss" and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. ASU 2016-13 also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. ASU 2016-13 is effective for public companies for annual periods beginning after December 15, 2019, including interim periods within those fiscal years. Entities will apply the standard's provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. We are currently evaluating the impact adoption of ASU 2016-13 will have on our consolidated financial statements and disclosures.

ASU 2016-02 "Leases (Topic 842)" ("ASU 2016-02") requires that lessees and lessors recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing arrangements. ASU 2016-02 is effective for public companies for annual periods beginning after December 15, 2018, including interim periods within those fiscal years. We have not yet selected a transition method as we are in the process of determining the effect of the standard on our consolidated financial statements and disclosures.

ASU 2014-09 "Revenue from Contracts with Customers (Topic 606)" ("ASU 2014-09") implements a common revenue standard that clarifies the principles for recognizing revenue. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 establishes a five-step model which entities must follow to recognize revenue and removes inconsistencies and weaknesses in existing guidance. ASU 2014-09 was originally effective for annual and interim periods beginning after December 15, 2016; however, the FASB issued ASU 2015-14 - "Revenue from Contracts with Customers (Topic 606) - Deferral of the Effective Date" which deferred the effective date of ASU 2014-09 by one year to annual and interim periods beginning after December 15, 2017. The guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, which comprises a significant portion of our revenue stream. Adoption of ASU 2014-09 may require us to amend how we recognize certain recurring revenue streams related to trust fees, which are recorded in non-interest income; however, we do not expect adoption of ASU 2014-09 to have a material impact on our consolidated financial statements and disclosures. We plan to adopt the revenue recognition guidance in the first quarter of 2018 with a cumulative effect adjustment to opening retained earnings, if management deems such adjustment significant. Our implementation efforts to date include identification of revenue streams within the scope of the guidance, and we have begun review of revenue contracts.

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Nature of Business

Organization and Nature of Business

Texas Capital Bancshares, Inc. (the “Company”), a Delaware corporation, was incorporated in November 1996 and commenced banking operations in December 1998. The consolidated financial statements of the Company include the accounts of Texas Capital Bancshares, Inc. and its wholly owned subsidiary, Texas Capital Bank, National Association (the “Bank”). We serve the needs of commercial businesses and successful professionals and entrepreneurs located in Texas as well as operate several lines of business serving a regional and national clientèle of commercial borrowers. We are primarily a secured lender, with our greatest concentration of loans in Texas.

Basis of Presentation

Basis of Presentation

Our accounting and reporting policies conform to accounting principles generally accepted in the United States (“GAAP”) and to generally accepted practices within the banking industry. Certain prior period balances have been reclassified to conform to the current period presentation. In that regard, ASU 2016-09, "Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting," ("ASU 2016-09") became effective for us on January 1, 2017. ASU 2016-09 requires that excess tax benefits and deficiencies be recognized as a component of income taxes within the income statement. Additionally, ASU 2016-09 requires that all income tax-related cash flows resulting from share-based payments be reported as operating activities in the statement of cash flows. Previously, income tax benefits at award settlement were reported as a reduction to operating cash flows and an increase to financing cash flows to the extent that those benefits exceeded the income tax benefits reported in earnings during the award's vesting period. We have elected to apply that change in cash flow presentation on a prospective basis. ASU 2016-09 also requires that companies make an accounting policy election regarding forfeitures, to either estimate the number of awards that are expected to vest or account for them when they occur. We have elected to recognize forfeitures as they occur. The impact of this change and that of the remaining provisions of ASU 2016-09 did not have a significant impact on our financial statements.

The consolidated interim financial statements have been prepared without audit. Certain information and footnote disclosures presented in accordance with GAAP have been condensed or omitted. In the opinion of management, the interim financial statements include all normal and recurring adjustments and the disclosures made are adequate to make the interim financial information not misleading. The consolidated financial statements have been prepared in accordance with GAAP for interim financial information and the instructions to Form 10-Q adopted by the Securities and Exchange Commission (“SEC”). Accordingly, the financial statements do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with our consolidated financial statements, and notes thereto, for the year ended December 31, 2016, included in our Annual Report on Form 10-K filed with the SEC on February 17, 2017 (the “2016 Form 10-K”). Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period.

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. Actual results could differ from those estimates. The allowance for loan losses, the fair value of stock-based compensation awards, the fair values of financial instruments and the status of contingencies are particularly susceptible to significant change.

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EARNINGS PER COMMON SHARE (Tables)

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Schedule of computation of basic and diluted earnings per share

The following table presents the computation of basic and diluted earnings per share (in thousands except per share data):

	Three months ended   March 31,
	2017		2016
Numerator:
Net income	$	42,542	$	25,128
Preferred stock dividends	2,438		2,438
Net income available to common stockholders	$	40,104	22,690
Denominator:
Denominator for basic earnings per share— weighted average shares	49,535,959		45,888,735
Effect of employee stock-based awards(1)	260,947		117,372
Effect of warrants to purchase common stock	437,324		348,271
Denominator for dilutive earnings per share—adjusted weighted average shares and assumed conversions	50,234,230		46,354,378
Basic earnings per common share	$	0.81	$	0.49
Diluted earnings per common share	$	0.80	$	0.49

(1) SARs and RSUs outstanding of 3,000 at March 31, 2017 and 308,972 at March 31, 2016 have not been included in diluted earnings per share because to do so would have been anti-dilutive for the periods presented.

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SECURITIES (Tables)

3 Months Ended

Mar. 31, 2017

Available-for-sale Securities [Abstract]

Schedule of summary of securities

Schedule of amortized cost and estimated fair value of securities

The amortized cost and estimated fair value of available-for-sale securities are presented below by contractual maturity (in thousands, except percentage data):

	March 31, 2017
	Less Than One Year			After One Through Five Years			After Five Through Ten Years			After Ten Years			Total
Available-for-sale:
U.S. Treasuries:
Amortized cost	$	16,688		$	—		$	—		$	—		$	16,688
Estimated fair value	16,683			—			—			—			16,683
Weighted average yield(3)	0.53		%	—		%	—		%	—		%	0.53		%
Residential mortgage-backed securities:(1)
Amortized cost	47			1,522			2,925			8,955			13,449
Estimated fair value	47			1,572			3,253			9,504			14,376
Weighted average yield(3)	5.25		%	4.69		%	5.55		%	2.85		%	3.65		%
Equity securities:(4)
Amortized cost	11,424			—			—			—			11,424
Estimated fair value	11,144			—			—			—			11,144
Total available-for-sale securities:
Amortized cost													$	41,561
Estimated fair value													$	42,203

	December 31, 2016
	Less Than One Year			After One Through Five Years			After Five Through Ten Years			After Ten Years			Total
Available-for-sale:
Residential mortgage-backed securities:(1)
Amortized cost	$	9		$	2,047		$	3,147		$	9,477		$	14,680
Estimated fair value	9			2,104			3,495			10,044			15,652
Weighted average yield(3)	5.50		%	4.70		%	5.55		%	2.84		%	3.68		%
Municipals:(2)
Amortized cost	275			—			—			—			275
Estimated fair value	275			—			—			—			275
Weighted average yield(3)	5.61		%	—		%	—		%	—		%	5.61		%
Equity securities:(4)
Amortized cost	9,280			—			—			—			9,280
Estimated fair value	8,947			—			—			—			8,947
Total available-for-sale securities:
Amortized cost													$	24,235
Estimated fair value													$	24,874

(1) Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

(2) Yields have been adjusted to a tax equivalent basis assuming a 35% federal tax rate.

(3) Yields are calculated based on amortized cost.

(4) These equity securities do not have a stated maturity.

Schedule of investment securities that have been in a continuous unrealized loss position for less or more than 12 months

The following table discloses, as of March 31, 2017 and December 31, 2016, our investment securities that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 or more months (in thousands):

March 31, 2017	Less Than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
U.S. Treasuries	$	16,683	$	(5	)	$	—	$	—		$	16,683	$	(5	)
Equity securities	1,015		(6		)	6,125		(375		)	7,140		(381		)
	$	17,698	$	(11	)	$	6,125	$	(375	)	$	23,823	$	(386	)
December 31, 2016	Less Than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Equity securities	$	1,015	$	(6	)	$	6,146	$	(354	)	$	7,161	$	(360	)

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Tables)

3 Months Ended

Mar. 31, 2017

Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]

Schedule of loans held for investments

At March 31, 2017 and December 31, 2016, loans held for investment were as follows (in thousands):

	March 31, 2017			December 31, 2016
Commercial	$	7,480,485		$	7,291,545
Mortgage finance	3,371,598			4,497,338
Construction	2,108,611			2,098,706
Real estate	3,563,136			3,462,203
Consumer	36,259			34,587
Leases	186,113			185,529
Gross loans held for investment	16,746,202			17,569,908
Deferred income (net of direct origination costs)	(75,686		)	(71,559		)
Allowance for loan losses	(172,013		)	(168,126		)
Total loans held for investment	$	16,498,503		$	17,330,223

Schedule of the credit risk profile of loan portfolio by internally assigned grades and non-accrual status

The following tables summarize the credit risk profile of our loan portfolio by internally assigned grades and non-accrual status as of March 31, 2017 and December 31, 2016 (in thousands):

March 31, 2017
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Grade:
Pass	$	7,161,580	$	3,371,598	$	2,106,255	$	3,528,210	$	35,554	$	182,869	$	16,386,066
Special mention	51,723		—		2,356		12,904		370		3,161		70,514
Substandard-accruing	125,095		—		—		17,843		135		—		143,073
Non-accrual	142,087		—		—		4,179		200		83		146,549
Total loans held for investment	$	7,480,485	$	3,371,598	$	2,108,611	$	3,563,136	$	36,259	$	186,113	$	16,746,202
December 31, 2016
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Grade:
Pass	$	6,941,310	$	4,497,338	$	2,074,859	$	3,430,346	$	34,249	$	181,914	$	17,160,016
Special mention	69,447		—		10,901		21,932		—		3,532		105,812
Substandard-accruing	115,848		—		12,787		7,516		138		—		136,289
Non-accrual	164,940		—		159		2,409		200		83		167,791
Total loans held for investment	$	7,291,545	$	4,497,338	$	2,098,706	$	3,462,203	$	34,587	$	185,529	$	17,569,908

Schedule of activity in the reserve for loan losses by portfolio segment

The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2017 and 2016. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.

March 31, 2017
(in thousands)	Commercial		Mortgage Finance		Construction			Real Estate			Consumer			Leases			Additional Qualitative Reserve			Total
Beginning balance	$	128,768	$	—	$	13,144		$	19,149		$	241		$	1,124		$	5,700		$	168,126
Provision for loan losses	8,147		—		(124		)	3,270			(31		)	325			(2,012		)	9,575
Charge-offs	9,233		—		—			—			—			—			—			9,233
Recoveries	3,381		—		101			50			5			8			—			3,545
Net charge-offs (recoveries)	5,852		—		(101		)	(50		)	(5		)	(8		)	—			5,688
Ending balance	$	131,063	$	—	$	13,121		$	22,469		$	215		$	1,457		$	3,688		$	172,013
Period end amount allocated to:
Loans individually evaluated for impairment	$	34,595	$	—	$	—		$	195		$	30		$	13		$	—		$	34,833
Loans collectively evaluated for impairment	96,468		—		13,121			22,274			185			1,444			3,688			137,180
Ending balance	$	131,063	$	—	$	13,121		$	22,469		$	215		$	1,457		$	3,688		$	172,013
March 31, 2016
(in thousands)	Commercial		Mortgage Finance		Construction			Real Estate			Consumer			Leases			Additional Qualitative Reserve			Total
Beginning balance	$	112,446	$	—	$	6,836		$	13,381		$	338		$	3,931		$	4,179		$	141,111
Provision for loan losses	26,581		—		1,050			1,134			(15		)	(2,435		)	2,480			28,795
Charge-offs	8,496		—		—			—			—			—			—			8,496
Recoveries	1,040		—		—			8			7			45			—			1,100
Net charge-offs (recoveries)	7,456		—		—			(8		)	(7		)	(45		)	—			7,396
Ending balance	$	131,571	$	—	$	7,886		$	14,523		$	330		$	1,541		$	6,659		$	162,510
Period end amount allocated to:
Loans individually evaluated for impairment	$	31,415	$	—	$	—		$	1,183		$	—		$	51		$	—		$	32,649
Loans collectively evaluated for impairment	100,156		—		7,886			13,340			330			1,490			6,659			129,861
Ending balance	$	131,571	$	—	$	7,886		$	14,523		$	330		$	1,541		$	6,659		$	162,510

Schedule of allowance for credit losses related to unfunded commitments

The table below presents the activity in the portion of the allowance for credit losses related to losses on unfunded commitments for the three months ended March 31, 2017 and 2016 (in thousands). This liability is recorded in other liabilities in the consolidated balance sheet.

	Three months ended March 31,
	2017			2016
Beginning balance	$	11,422		$	9,011
Provision for off-balance sheet credit losses	(575		)	1,205
Ending balance	$	10,847		$	10,216

Schedule of recorded investment in loans related to each balance in the allowance for loan losses

Our recorded investment in loans as of March 31, 2017, December 31, 2016 and March 31, 2016 related to each balance in the allowance for loan losses by portfolio segment and disaggregated on the basis of our impairment methodology was as follows (in thousands):

March 31, 2017
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	143,632	$	—	$	—	$	5,512	$	200	$	83	$	149,427
Loans collectively evaluated for impairment	7,336,853		3,371,598		2,108,611		3,557,624		36,059		186,030		16,596,775
Total	$	7,480,485	$	3,371,598	$	2,108,611	$	3,563,136	$	36,259	$	186,113	$	16,746,202
December 31, 2016
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	166,669	$	—	$	159	$	3,751	$	200	$	83	$	170,862
Loans collectively evaluated for impairment	7,124,876		4,497,338		2,098,547		3,458,452		34,387		185,446		17,399,046
Total	$	7,291,545	$	4,497,338	$	2,098,706	$	3,462,203	$	34,587	$	185,529	$	17,569,908
March 31, 2016
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	167,832	$	—	$	—	$	8,397	$	—	$	343	$	176,572
Loans collectively evaluated for impairment	6,721,967		4,981,304		1,958,370		3,128,584		26,439		104,117		16,920,781
Total	$	6,889,799	$	4,981,304	$	1,958,370	$	3,136,981	$	26,439	$	104,460	$	17,097,353

Schedule of impaired loans, by portfolio class

The following tables detail our impaired loans, by portfolio class, as of March 31, 2017 and December 31, 2016 (in thousands):

March 31, 2017
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial
Business loans	$	25,149	$	30,093	$	—	$	24,295	$	—
Energy	39,050		39,306		—		44,185		—
Construction
Market risk	—		—		—		—		—
Real estate
Market risk	—		—		—		—		—
Commercial	2,618		2,618		—		2,261		—
Secured by 1-4 family	—		—		—		—		—
Consumer	—		—		—		—		—
Leases	—		—		—		—		—
Total impaired loans with no allowance recorded	$	66,817	$	72,017	$	—	$	70,741	$	—
With an allowance recorded:
Commercial
Business loans	$	26,146	$	26,146	$	8,378	$	22,917	$	—
Energy	53,287		71,555		26,217		67,592		6
Construction
Market risk	—		—		—		106		—
Real estate
Market risk	1,333		1,333		29		1,339		—
Commercial	—		—		—		—		—
Secured by 1-4 family	1,561		1,561		166		738		—
Consumer	200		200		30		200		—
Leases	83		83		13		83		—
Total impaired loans with an allowance recorded	$	82,610	$	100,878	$	34,833	$	92,975	$	6
Combined:
Commercial
Business loans	$	51,295	$	56,239	$	8,378	$	47,212	$	—
Energy	92,337		110,861		26,217		111,777		6
Construction
Market risk	—		—		—		106		—
Real estate
Market risk	1,333		1,333		29		1,339		—
Commercial	2,618		2,618		—		2,261		—
Secured by 1-4 family	1,561		1,561		166		738		—
Consumer	200		200		30		200		—
Leases	83		83		13		83		—
Total impaired loans	$	149,427	$	172,895	$	34,833	$	163,716	$	6

December 31, 2016
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial
Business loans	$	23,868	$	27,992	$	—	$	12,361	$	—
Energy	46,753		54,522		—		54,075		—
Construction
Market risk	—		—		—		2,778		—
Real estate
Market risk	—		—		—		—		—
Commercial	2,083		2,083		—		4,483		38
Secured by 1-4 family	—		—		—		—		—
Consumer	—		—		—		—		—
Leases	—		—		—		403		—
Total impaired loans with no allowance recorded	$	72,704	$	84,597	$	—	$	74,100	$	38
With an allowance recorded:
Commercial
Business loans	$	21,303	$	21,303	$	7,055	$	22,277	$	—
Energy	74,745		88,987		27,350		73,637		24
Construction
Market risk	159		159		24		53		—
Real estate
Market risk	1,342		1,342		20		3,000		—
Commercial	—		—		—		—		—
Secured by 1-4 family	326		326		113		435		—
Consumer	200		200		30		67		—
Leases	83		83		13		548		—
Total impaired loans with an allowance recorded	$	98,158	$	112,400	$	34,605	$	100,017	$	24
Combined:
Commercial
Business loans	$	45,171	$	49,295	$	7,055	$	34,638	$	—
Energy	121,498		143,509		27,350		127,712		24
Construction
Market risk	159		159		24		2,831		—
Real estate
Market risk	1,342		1,342		20		3,000		—
Commercial	2,083		2,083		—		4,483		38
Secured by 1-4 family	326		326		113		435		—
Consumer	200		200		30		67		—
Leases	83		83		13		951		—
Total impaired loans	$	170,862	$	196,997	$	34,605	$	174,117	$	62

Schedule of an age analysis of accruing past due loans

The table below provides an age analysis of our loans held for investment as of March 31, 2017 (in thousands):

	30-59 Days Past Due		60-89 Days Past Due		Greater Than 90 Days and Accruing(1)		Total Past Due		Non-accrual		Current		Total
Commercial
Business loans	$	30,716	$	6,923	$	7,359	$	44,998	$	49,750	$	6,484,545	$	6,579,293
Energy	—		—		—		—		92,337		808,855		901,192
Mortgage finance loans	—		—		—		—		—		3,371,598		3,371,598
Construction
Market risk	2,553		—		—		2,553		—		2,081,308		2,083,861
Secured by 1-4 family	—		—		—		—		—		24,750		24,750
Real estate
Market risk	112		—		1,333		1,445		—		2,652,833		2,654,278
Commercial	—		274		—		274		2,618		689,414		692,306
Secured by 1-4 family	4,225		—		107		4,332		1,561		210,659		216,552
Consumer	360		98		—		458		200		35,601		36,259
Leases	—		—		—		—		83		186,030		186,113
Total loans held for investment	$	37,966	$	7,295	$	8,799	$	54,060	$	146,549	$	16,545,593	$	16,746,202

(1) Loans past due 90 days and still accruing includes premium finance loans of $5.1 million. These loans are generally secured by obligations of insurance carriers to refund premiums on canceled insurance policies. The refund of premiums from the insurance carriers can take 180 days or longer from the cancellation date.

Schedule of loans that have been restructured

The following table summarizes, for the three months ended March 31, 2017 and 2016, loans that were restructured during 2017 and 2016 (in thousands):

March 31, 2017
	Number of Restructured Loans	Pre-Restructuring Outstanding Recorded Investment		Post-Restructuring Outstanding Recorded Investment
Energy loans	1	$	1,070	$	1,070
Commercial business loans	1	$	599	$	599
Total new restructured loans in 2017	2	$	1,669	$	1,669
March 31, 2016
	Number of Restructured Loans	Pre-Restructuring Outstanding Recorded Investment		Post-Restructuring Outstanding Recorded Investment
Energy loans	2	$	14,235	$	14,235
Total new restructured loans in 2016	2	$	14,235	$	14,235

The following table provides information on how restructured loans were modified during the three months ended March 31, 2017 and 2016 (in thousands):

	Three months ended March 31,
	2017		2016
Extended maturity	$	1,070	$	—
Adjusted payment schedule	—		12,916
Combination of maturity extension and payment schedule adjustment	—		1,319
Other	599		—
Total	$	1,669	$	14,235

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OREO AND VALUATION ALLOWANCE FOR LOSSES ON OREO (Tables)

3 Months Ended

Mar. 31, 2017

Real Estate Owned, Disclosure of Detailed Components [Abstract]

Schedule of the activity related to OREO

The table below presents a summary of the activity related to OREO (in thousands):

	Three months ended March 31,
	2017			2016
Beginning balance	$	18,961		$	278
Additions	—			17,398
Sales	(128		)	(91		)
Valuation allowance for OREO	—			—
Direct write-downs	—			—
Ending balance	$	18,833		$	17,585

When foreclosure occurs, the acquired asset is recorded at fair value less selling costs, generally based on appraised value, which may result in partial charge-off of the loan. Subsequent write-downs required for declines in value are recorded through a valuation allowance or taken directly to the assets, charged to other non-interest expense. We did not record a valuation allowance during the three months endedMarch 31, 2017 and 2016.

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CERTAIN TRANSFERS OF FINANCIAL ASSETS (Tables)

3 Months Ended

Mar. 31, 2017

Transfers and Servicing [Abstract]

Schedule of Loans Held for Sale

The table below presents a reconciliation of the changes in loans held for sale for the three months endedMarch 31, 2017 and 2016 (in thousands):

	Three months ended March 31,
	2017			2016
Beginning balance	$	968,929		$	86,075
Loans purchased	1,299,542			364,919
Payments and loans sold	(1,399,800		)	(357,018		)
Change in fair value	15,976			726
Ending balance	$	884,647		$	94,702

The table below presents the unpaid principal balance of loans held for sale and related fair values at March 31, 2017 and December 31, 2016 (in thousands):

	March 31, 2017		December 31, 2016
Unpaid principal balance	$	880,156	$	980,414
Fair value	884,647		968,929
Fair value over/(under) unpaid principal balance	$	4,491	$	(11,485	)

Servicing Asset at Amortized Cost

We generally retain the right to service the loans sold, creating mortgage servicing rights ("MSRs") which are recorded as assets on our balance sheet. A summary of MSR activity for the three months endedMarch 31, 2017 and 2016 is as follows (in thousands):

	Three months ended March 31,
	2017			2016
Servicing asset:
Balance, beginning of year(1)	$	28,536		$	423
Capitalized servicing rights	18,094			3,903
Amortization	(1,104		)	(40		)
Balance, end of period	$	45,526		$	4,286
Valuation allowance:
Balance, beginning of year	$	—		$	—
Increase in valuation allowance	—			33
Balance, end of period	$	—		$	33
Servicing asset, net(1)	$	45,526		$	4,253
Fair value	$	48,013		$	4,253

Schedule of Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities

March 31, 2017 and December 31, 2016, management used the following assumptions to determine the fair value of MSRs:

	March 31, 2017		December 31, 2016
Average discount rates	9.91	%	9.96	%
Expected prepayment speeds	8.10	%	7.91	%
Weighted average life, in years	7.9		8.0

Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets

A sensitivity analysis of changes in the fair value of our MSR portfolio resulting from certain key assumptions is presented in the following table (in thousands):

	March 31, 2017			December 31, 2016
50 bp adverse change in prepayment speed	$	(4,471	)	$	(2,833	)
100 bp adverse change in prepayment speed	(10,835		)	(6,812		)

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FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK (Tables)

3 Months Ended

Mar. 31, 2017

Risks and Uncertainties [Abstract]

Schedule of financial instruments with off-balance sheet risk

The table below summarizes our off-balance sheet financial instruments whose contract amounts represented credit risk (in thousands):

	March 31, 2017		December 31, 2016
Commitments to extend credit	$	5,829,713	$	5,704,381
Standby letters of credit	171,451		171,266

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REGULATORY MATTERS (Tables)

3 Months Ended

Mar. 31, 2017

Regulatory Capital Requirements [Abstract]

Schedule of capital ratios

The table below summarizes our actual and required capital ratios under the Basel III Capital Rules:

	Actual				Minimum Capital Required - Basel III Phase-In Schedule				Minimum capital Required - Basel III Fully Phased-In				Required to be Considered Well Capitalized
	Capital Amount		Ratio		Capital Amount		Ratio		Capital Amount		Ratio		Capital Amount	Ratio
As of March 31, 2017:
CET1
Company	$	1,881,329	9.61	%	$	1,125,456	5.75	%	$	1,370,121	7.00	%	N/A	N/A
Bank	1,778,152		9.09	%	1,125,405		5.75	%	1,370,058		7.00	%	1,272,197	6.50	%
Total capital (to risk-weighted assets)
Company	2,603,536		13.30	%	1,810,516		9.25	%	2,055,181		10.50	%	N/A	N/A
Bank	2,341,922		11.97	%	1,810,434		9.25	%	2,055,088		10.50	%	1,957,226	10.00	%
Tier 1 capital (to risk-weighted assets)
Company	2,139,542		10.93	%	1,419,053		7.25	%	1,663,718		8.50	%	N/A	N/A
Bank	1,936,365		9.89	%	1,418,989		7.25	%	1,663,642		8.50	%	1,565,781	8.00	%
Tier 1 capital (to average assets)(1)
Company	2,139,542		10.27	%	833,706		4.00	%	833,706		4.00	%	N/A	N/A
Bank	1,936,365		9.29	%	833,510		4.00	%	833,510		4.00	%	1,041,888	5.00	%
As of December 31, 2016:
CET1
Company	$	1,841,219	8.97	%	$	1,052,205	5.125	%	$	1,437,159	7.00	%	N/A	N/A
Bank	1,735,496		8.45	%	1,051,989		5.125	%	1,436,863		7.00	%	1,334,244	6.50	%
Total capital (to risk-weighted assets)
Company	2,561,663		12.48	%	1,770,766		8.625	%	2,155,715		10.50	%	N/A	N/A
Bank	2,297,528		11.19	%	1,770,421		8.625	%	2,155,295		10.50	%	2,052,683	10.00	%
Tier 1 capital (to risk-weighted assets)
Company	2,101,071		10.23	%	1,360,154		6.625	%	1,745,103		8.50	%	N/A	N/A
Bank	1,895,348		9.23	%	1,359,888		6.625	%	1,744,762		8.50	%	1,642,147	8.00	%
Tier 1 capital (to average assets)(1)
Company	2,101,071		9.34	%	900,268		4.00	%	900,268		4.00	%	N/A	N/A
Bank	1,895,348		8.42	%	900,070		4.00	%	900,070		4.00	%	1,125,087	5.00	%

(1) The Tier 1 capital ratio (to average assets) is not impacted by the Basel III Capital Rules; however, it should be noted that the Federal Reserve Board and the FDIC may require the Company and the Bank, respectively, to maintain a Tier 1 capital ratio (to average assets) above the required minimum.

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STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2017

Compensation Related Costs [Abstract]

Schedule of stock-based compensation costs

Stock-based compensation expense presented below consists of awards granted from 2011 through March 31, 2017.

	Three months ended March 31,
(in thousands)	2017		2016
Stock-settled awards:
SARs	$	72	$	82
RSUs	1,593		1,048
Restricted stock	4		2
Cash-settled performance units	2,890		(673		)
Total	$	4,559	$	459

Schedule of unrecognized compensation costs

(in thousands)	March 31, 2017
Unrecognized compensation expense related to unvested stock-settled awards	$	20,117
Weighted average period over which expense is expected to be recognized, in years	3.2

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FAIR VALUE DISCLOSURES (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities measured at fair value

Assets and liabilities measured at fair value at March 31, 2017 and December 31, 2016 are as follows (in thousands):

	Fair Value Measurements Using
March 31, 2017	Level 1		Level 2		Level 3
Available-for-sale securities:(1)
U.S. Treasuries	$	—	$	16,683	$	—
Residential mortgage-backed securities	—		14,376		—
Equity securities(2)	4,004		7,140		—
Loans held for sale (3)	—		884,647		—
Loans held for investment(4) (6)	—		—		50,780
OREO(5) (6)	—		—		18,833
Derivative assets(7)	—		24,245		—
Derivative liabilities(7)	—		27,697		—
Non-qualified deferred compensation plan liabilities (8)	4,040		—		—
December 31, 2016
Available-for-sale securities:(1)
Residential mortgage-backed securities	$	—	$	15,652	$	—
Municipals	—		275		—
Equity securities(2)	1,786		7,161		—
Loans held for sale(3)	—		968,929		—
Loans held for investment(4) (6)	—		—		52,323
OREO(5) (6)	—		—		18,961
Derivative assets(7)	—		37,878		—
Derivative liabilities(7)	—		26,240		—
Non-qualified deferred compensation plan liabilities (8)	1,811		—		—

(1) Securities are measured at fair value on a recurring basis, generally monthly.

(2) Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.

(3) Loans held for sale are measured at fair value on a recurring basis, generally monthly.

(4) Includes impaired loans that have been measured for impairment at the fair value of the loan’s collateral.

(5) OREO is transferred from loans to OREO at fair value less selling costs.

(6) Loans held for investment and OREO are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions.

(7) Derivative assets and liabilities are measured at fair value on a recurring basis, generally quarterly.

(8) Non-qualified deferred compensation plan liabilities represent the fair value of the obligation to the employee, which corresponds to the fair value of the invested assets, and are measured at fair value on a recurring basis, generally monthly.

Summary of the carrying amounts and estimated fair values of financial instruments

A summary of the carrying amounts and estimated fair values of financial instruments is as follows (in thousands):

	March 31, 2017				December 31, 2016
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Financial assets:
Level 1 inputs:
Cash and cash equivalents	$	2,920,934	$	2,920,934	$	2,839,352	$	2,839,352
Securities, available-for-sale	4,004		4,004		1,786		1,786
Level 2 inputs:
Securities, available-for-sale	38,199		38,199		23,088		23,088
Loans held for sale	884,647		884,647		968,929		968,929
Derivative assets	24,245		24,245		37,878		37,878
Level 3 inputs:
Loans held for investment, net	16,498,503		16,507,087		17,330,223		17,347,199
Financial liabilities:
Level 2 inputs:
Federal funds purchased	134,539		134,539		101,800		101,800
Customer repurchase agreements	7,295		7,295		7,775		7,775
Other borrowings	1,500,000		1,500,000		2,000,000		2,000,000
Subordinated notes	281,134		330,552		281,044		304,672
Derivative liabilities	27,697		27,697		26,240		26,240
Level 3 inputs:
Deposits	16,605,380		16,604,650		17,016,831		17,017,221
Trust preferred subordinated debentures	113,406		113,406		113,406		113,406

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DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

3 Months Ended

Mar. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of notional amounts and estimated fair values of interest rate derivative positions

The notional amounts and estimated fair values of interest rate derivative positions outstanding at March 31, 2017 and December 31, 2016 are presented in the following tables (in thousands):

	March 31, 2017								December 31, 2016
	Estimated Fair Value								Estimated Fair Value
	Notional Amount		Asset Derivative			Liability Derivative			Notional Amount		Asset Derivative			Liability Derivative
Non-hedging interest rate derivatives:
Financial institution counterparties:
Commercial loan/lease interest rate swaps	$	1,256,666	$	2,398		$	22,489		$	1,144,367	$	1,754		$	25,421
Commercial loan/lease interest rate caps	231,125		639			—			210,996		819			—
Customer counterparties:
Commercial loan/lease interest rate swaps	1,256,666		22,489			2,398			1,144,367		25,421			1,754
Commercial loan/lease interest rate caps	231,125		—			639			210,996		—			819
Economic hedging interest rate derivatives:
Loan purchase commitments	222,492		1,117			—			237,805		1,351			—
Forward sales commitments	1,030,393		—			4,569			1,218,000		10,287			—
Gross derivatives			26,643			30,095					39,632			27,994
Offsetting derivative assets/liabilities			(2,398		)	(2,398		)			(1,754		)	(1,754		)
Net derivatives included in the consolidated balance sheets			$	24,245		$	27,697				$	37,878		$	26,240

Schedule of the weighted-average receive and pay interest rate swaps

The weighted average received and paid interest rates for interest rate swaps outstanding at March 31, 2017 and December 31, 2016 were as follows:

	March 31, 2017 Weighted Average Interest Rate				December 31, 2016 Weighted Average Interest Rate
	Received		Paid		Received		Paid
Non-hedging interest rate swaps	3.40	%	4.61	%	3.17	%	4.58	%

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EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net income		$ 42,542	$ 25,128
Preferred stock dividends		(2,438)	(2,438)
Net income available to common stockholders		$ 40,104	$ 22,690
Denominator:
Denominator for basic earnings per share— weighted average shares		49,535,959	45,888,735
Effect of employee stock-based awards	[1]	260,947	117,372
Effect of warrants to purchase common stock		437,324	348,271
Denominator for dilutive earnings per share—adjusted weighted average shares and assumed conversions		50,234,230	46,354,378
Basic earnings per common share (usd per share)		$ 0.81	$ 0.49
Diluted earnings per common share (usd per share)		$ 0.80	$ 0.49
Stock options, SARs and RSUs excluded from computation of diluted EPS		3,000	308,972

[1] SARs and RSUs outstanding of 3,000 at March 31, 2017 and 308,972 at March 31, 2016 have not been included in diluted earnings per share because to do so would have been anti-dilutive for the periods presented.

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SECURITIES (Details) - USD ($) $ in Thousands		Mar. 31, 2017	Dec. 31, 2016
Summary of Available-for-Sale Securities
Amortized Cost		$ 41,561	$ 24,235
Gross Unrealized Gains		1,028	999
Gross Unrealized Losses		(386)	(360)
Estimated Fair Value		42,203	24,874
U.S. Treasuries
Summary of Available-for-Sale Securities
Amortized Cost		16,688
Gross Unrealized Gains		0
Gross Unrealized Losses		(5)
Estimated Fair Value		16,683
Residential mortgage-backed securities
Summary of Available-for-Sale Securities
Amortized Cost	[1]	13,449	14,680
Gross Unrealized Gains		927	972
Gross Unrealized Losses		0	0
Estimated Fair Value	[1]	14,376	15,652
Municipals
Summary of Available-for-Sale Securities
Amortized Cost	[2]		275
Gross Unrealized Gains			0
Gross Unrealized Losses			0
Estimated Fair Value	[2]		275
Equity securities
Summary of Available-for-Sale Securities
Amortized Cost	[3],[4]	11,424	9,280
Gross Unrealized Gains	[3]	101	27
Gross Unrealized Losses	[3]	(381)	(360)
Estimated Fair Value	[3],[4]	$ 11,144	$ 8,947

[1] Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

[2] Yields have been adjusted to a tax equivalent basis assuming a 35% federal tax rate.

[3] Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.

[4] These equity securities do not have a stated maturity.

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SECURITIES (Details 1) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2017	Dec. 31, 2016
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Total		$ 41,561	$ 24,235
Estimated Fair Value		$ 42,203	$ 24,874
Available-for-sale Securities, Other Disclosure Items
Federal tax rate		35.00%	35.00%
U.S. Treasuries
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Less Than One Year		$ 16,688
Amortized cost, After One Through Five Years		0
Amortized cost, After Five Through Ten Years		0
Amortized cost, After Ten Years		0
Amortized cost, Total		16,688
Estimated fair value, Less Than One Year		16,683
Estimated fair value, After One Through Five Years		0
Estimated fair value, After Five Through Ten Years		0
Estimated fair value, After Ten Years		0
Estimated Fair Value		$ 16,683
Weighted average yield, Less Than One Year		0.53%
Weighted average yield, After One Through Five Years		0.00%
Weighted average yield, After Five Through Ten Years		0.00%
Weighted average yield, After Ten Years		0.00%
Weighted average yield, Total		0.53%
Residential mortgage-backed securities
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Less Than One Year	[1]	$ 47	$ 9
Amortized cost, After One Through Five Years	[1]	1,522	2,047
Amortized cost, After Five Through Ten Years	[1]	2,925	3,147
Amortized cost, After Ten Years	[1]	8,955	9,477
Amortized cost, Total	[1]	13,449	14,680
Estimated fair value, Less Than One Year	[1]	47	9
Estimated fair value, After One Through Five Years	[1]	1,572	2,104
Estimated fair value, After Five Through Ten Years	[1]	3,253	3,495
Estimated fair value, After Ten Years	[1]	9,504	10,044
Estimated Fair Value	[1]	$ 14,376	$ 15,652
Weighted average yield, Less Than One Year	[1],[2]	5.25%	5.50%
Weighted average yield, After One Through Five Years	[1],[2]	4.69%	4.70%
Weighted average yield, After Five Through Ten Years	[1],[2]	5.55%	5.55%
Weighted average yield, After Ten Years	[1],[2]	2.85%	2.84%
Weighted average yield, Total	[1],[2]	3.65%	3.68%
Municipals
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Less Than One Year	[3]		$ 275
Amortized cost, After One Through Five Years	[3]		0
Amortized cost, After Five Through Ten Years	[3]		0
Amortized cost, After Ten Years	[3]		0
Amortized cost, Total	[3]		275
Estimated fair value, Less Than One Year	[3]		275
Estimated fair value, After One Through Five Years	[3]		0
Estimated fair value, After Five Through Ten Years	[3]		0
Estimated fair value, After Ten Years	[3]		0
Estimated Fair Value	[3]		$ 275
Weighted average yield, Less Than One Year	[2],[3]		5.61%
Weighted average yield, After One Through Five Years	[2],[3]		0.00%
Weighted average yield, After Five Through Ten Years	[2],[3]		0.00%
Weighted average yield, After Ten Years	[2],[3]		0.00%
Weighted average yield, Total	[2],[3]		5.61%
Equity securities
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Less Than One Year	[4]	$ 11,424	$ 9,280
Amortized cost, After One Through Five Years	[4]	0	0
Amortized cost, After Five Through Ten Years	[4]	0	0
Amortized cost, After Ten Years	[4]	0	0
Amortized cost, Total	[4],[5]	11,424	9,280
Estimated fair value, Less Than One Year	[4]	11,144	8,947
Estimated fair value, After One Through Five Years	[4]	0	0
Estimated fair value, After Five Through Ten Years	[4]	0	0
Estimated fair value, After Ten Years	[4]	0	0
Estimated Fair Value	[4],[5]	11,144	$ 8,947
Deposits
Available-for-sale Securities, Other Disclosure Items
Available-for-sale securities pledged as collateral		3,600
Repurchase agreements
Available-for-sale Securities, Other Disclosure Items
Available-for-sale securities pledged as collateral		$ 9,400

[1] Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

[2] Yields are calculated based on amortized cost.

[3] Yields have been adjusted to a tax equivalent basis assuming a 35% federal tax rate.

[4] These equity securities do not have a stated maturity.

[5] Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.

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SECURITIES (Details 2) $ in Thousands	Mar. 31, 2017 USD ($) security	Dec. 31, 2016 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss positions (security) | security	5
Available-for-sale Securities, Continuous Unrealized Loss Position
Fair Value, Less Than 12 Months	$ 17,698
Unrealized Loss, Less Than 12 Months	(11)
Fair Value, 12 Months or Longer	6,125
Unrealized Loss, 12 Months or Longer	(375)
Fair Value, Total	23,823
Unrealized Loss, Total	$ (386)
U.S. Treasuries
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss positions (security) | security	3
Available-for-sale Securities, Continuous Unrealized Loss Position
Fair Value, Less Than 12 Months	$ 16,683
Unrealized Loss, Less Than 12 Months	(5)
Fair Value, 12 Months or Longer	0
Unrealized Loss, 12 Months or Longer	0
Fair Value, Total	16,683
Unrealized Loss, Total	$ (5)
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss positions (security) | security	2
Available-for-sale Securities, Continuous Unrealized Loss Position
Fair Value, Less Than 12 Months	$ 1,015	$ 1,015
Unrealized Loss, Less Than 12 Months	(6)	(6)
Fair Value, 12 Months or Longer	6,125	6,146
Unrealized Loss, 12 Months or Longer	(375)	(354)
Fair Value, Total	7,140	7,161
Unrealized Loss, Total	$ (381)	$ (360)

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Loans and Leases Receivable, Net Reported Amount
Commercial	$ 7,480,485	$ 7,291,545
Mortgage finance	3,371,598	4,497,338
Construction	2,108,611	2,098,706
Real estate	3,563,136	3,462,203
Consumer	36,259	34,587
Leases	186,113	185,529
Gross loans held for investment	16,746,202	17,569,908	$ 17,097,353
Deferred income (net of direct origination costs)	(75,686)	(71,559)
Allowance for loan losses	(172,013)	(168,126)	$ (162,510)	$ (141,111)
Loans held for investment, net	16,498,503	17,330,223
Participating mortgage finance loans	$ 230,500	$ 839,000

XML

LOANS AND ALLOWANCE FOR LOAN LOSSES - Credit Risk Profile (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Commercial	$ 7,480,485	$ 7,291,545
Mortgage finance	3,371,598	4,497,338
Construction	2,108,611	2,098,706
Real estate	3,563,136	3,462,203
Consumer	36,259	34,587
Leases	186,113	185,529
Gross loans held for investment	16,746,202	17,569,908	$ 17,097,353
Pass
Financing Receivable, Recorded Investment [Line Items]
Commercial	7,161,580	6,941,310
Mortgage finance	3,371,598	4,497,338
Construction	2,106,255	2,074,859
Real estate	3,528,210	3,430,346
Consumer	35,554	34,249
Leases	182,869	181,914
Gross loans held for investment	16,386,066	17,160,016
Special mention
Financing Receivable, Recorded Investment [Line Items]
Commercial	51,723	69,447
Mortgage finance	0	0
Construction	2,356	10,901
Real estate	12,904	21,932
Consumer	370	0
Leases	3,161	3,532
Gross loans held for investment	70,514	105,812
Substandard-accruing
Financing Receivable, Recorded Investment [Line Items]
Commercial	125,095	115,848
Mortgage finance	0	0
Construction	0	12,787
Real estate	17,843	7,516
Consumer	135	138
Leases	0	0
Gross loans held for investment	143,073	136,289
Non-accrual
Financing Receivable, Recorded Investment [Line Items]
Commercial	142,087	164,940
Mortgage finance	0	0
Construction	0	159
Real estate	4,179	2,409
Consumer	200	200
Leases	83	83
Gross loans held for investment	$ 146,549	$ 167,791

XML

LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Reserve for loan losses:
Beginning balance	$ 168,126	$ 141,111
Provision for loan losses	9,575	28,795
Charge-offs	9,233	8,496
Recoveries	3,545	1,100
Net charge-offs (recoveries)	5,688	7,396
Period end amount allocated to:
Loans individually evaluated for impairment			$ 34,833	$ 32,649
Loans collectively evaluated for impairment			137,180	129,861
Ending balance	168,126	141,111	172,013	162,510
Commercial
Reserve for loan losses:
Beginning balance	128,768	112,446
Provision for loan losses	8,147	26,581
Charge-offs	9,233	8,496
Recoveries	3,381	1,040
Net charge-offs (recoveries)	5,852	7,456
Period end amount allocated to:
Loans individually evaluated for impairment			34,595	31,415
Loans collectively evaluated for impairment			96,468	100,156
Ending balance	128,768	112,446	131,063	131,571
Mortgage finance loans
Reserve for loan losses:
Beginning balance	0	0
Provision for loan losses	0	0
Charge-offs	0	0
Recoveries	0	0
Net charge-offs (recoveries)	0	0
Period end amount allocated to:
Loans individually evaluated for impairment			0	0
Loans collectively evaluated for impairment			0	0
Ending balance	0	0	0	0
Construction
Reserve for loan losses:
Beginning balance	13,144	6,836
Provision for loan losses	(124)	1,050
Charge-offs	0	0
Recoveries	101	0
Net charge-offs (recoveries)	(101)	0
Period end amount allocated to:
Loans individually evaluated for impairment			0	0
Loans collectively evaluated for impairment			13,121	7,886
Ending balance	13,144	6,836	13,121	7,886
Real Estate
Reserve for loan losses:
Beginning balance	19,149	13,381
Provision for loan losses	3,270	1,134
Charge-offs	0	0
Recoveries	50	8
Net charge-offs (recoveries)	(50)	(8)
Period end amount allocated to:
Loans individually evaluated for impairment			195	1,183
Loans collectively evaluated for impairment			22,274	13,340
Ending balance	19,149	13,381	22,469	14,523
Consumer
Reserve for loan losses:
Beginning balance	241	338
Provision for loan losses	(31)	(15)
Charge-offs	0	0
Recoveries	5	7
Net charge-offs (recoveries)	(5)	(7)
Period end amount allocated to:
Loans individually evaluated for impairment			30	0
Loans collectively evaluated for impairment			185	330
Ending balance	241	338	215	330
Leases
Reserve for loan losses:
Beginning balance	1,124	3,931
Provision for loan losses	325	(2,435)
Charge-offs	0	0
Recoveries	8	45
Net charge-offs (recoveries)	(8)	(45)
Period end amount allocated to:
Loans individually evaluated for impairment			13	51
Loans collectively evaluated for impairment			1,444	1,490
Ending balance	1,124	3,931	1,457	1,541
Unallocated
Reserve for loan losses:
Beginning balance	5,700	4,179
Provision for loan losses	(2,012)	2,480
Charge-offs	0	0
Recoveries	0	0
Net charge-offs (recoveries)	0	0
Period end amount allocated to:
Loans individually evaluated for impairment			0	0
Loans collectively evaluated for impairment			3,688	6,659
Ending balance	$ 5,700	$ 4,179	$ 3,688	$ 6,659

XML

LOANS AND ALLOWANCE FOR LOAN LOSSES - Allowance for Credit Losses Related to Unfunded Commitments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Provision for off-balance sheet credit losses	$ 9,000	$ 30,000
Unfunded Loan Commitment
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	11,422	9,011
Provision for off-balance sheet credit losses	(575)	1,205
Ending balance	$ 10,847	$ 10,216

XML

LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 3) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	$ 149,427	$ 170,862	$ 176,572
Loans collectively evaluated for impairment	16,596,775	17,399,046	16,920,781
Gross loans held for investment	16,746,202	17,569,908	17,097,353
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	143,632	166,669	167,832
Loans collectively evaluated for impairment	7,336,853	7,124,876	6,721,967
Gross loans held for investment	7,480,485	7,291,545	6,889,799
Mortgage finance loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	0	0	0
Loans collectively evaluated for impairment	3,371,598	4,497,338	4,981,304
Gross loans held for investment	3,371,598	4,497,338	4,981,304
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	0	159	0
Loans collectively evaluated for impairment	2,108,611	2,098,547	1,958,370
Gross loans held for investment	2,108,611	2,098,706	1,958,370
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	5,512	3,751	8,397
Loans collectively evaluated for impairment	3,557,624	3,458,452	3,128,584
Gross loans held for investment	3,563,136	3,462,203	3,136,981
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	200	200	0
Loans collectively evaluated for impairment	36,059	34,387	26,439
Gross loans held for investment	36,259	34,587	26,439
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	83	83	343
Loans collectively evaluated for impairment	186,030	185,446	104,117
Gross loans held for investment	$ 186,113	$ 185,529	$ 104,460

XML

LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 4) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Non-accrual loans earning on a cash basis	$ 0	$ 811

XML

LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 5) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Commercial business loans | Energy
Financing Receivable, Impaired [Line Items]
Recorded investment			$ 46,753
With no related allowance recorded:
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 66,817		72,704
Unpaid principal balance	72,017		84,597
Related allowance	0		0
Average recorded investment	70,741		74,100
Interest income recognized	0		38
With no related allowance recorded: | Commercial business loans | Business loans
Financing Receivable, Impaired [Line Items]
Recorded investment	25,149		23,868
Unpaid principal balance	30,093		27,992
Related allowance	0		0
Average recorded investment	24,295		12,361
Interest income recognized	0		0
With no related allowance recorded: | Commercial business loans | Energy
Financing Receivable, Impaired [Line Items]
Recorded investment	39,050
Unpaid principal balance	39,306		54,522
Related allowance	0		0
Average recorded investment	44,185		54,075
Interest income recognized	0		0
With no related allowance recorded: | Construction | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0
Unpaid principal balance	0		0
Related allowance	0		0
Average recorded investment	0		2,778
Interest income recognized	0		0
With no related allowance recorded: | Real estate | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0
Unpaid principal balance	0		0
Related allowance	0		0
Average recorded investment	0		0
Interest income recognized	0		0
With no related allowance recorded: | Real estate | Commercial
Financing Receivable, Impaired [Line Items]
Recorded investment	2,618		2,083
Unpaid principal balance	2,618		2,083
Related allowance	0		0
Average recorded investment	2,261		4,483
Interest income recognized	0		38
With no related allowance recorded: | Real estate | Secured by 1-4 family
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0
Unpaid principal balance	0		0
Related allowance	0		0
Average recorded investment	0		0
Interest income recognized	0		0
With no related allowance recorded: | Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0
Unpaid principal balance	0		0
Related allowance	0		0
Average recorded investment	0		0
Interest income recognized	0		0
With no related allowance recorded: | Leases
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0
Unpaid principal balance	0		0
Related allowance	0		0
Average recorded investment	0		403
Interest income recognized	0		0
With an allowance recorded:
Financing Receivable, Impaired [Line Items]
Recorded investment	82,610		98,158
Unpaid principal balance	100,878		112,400
Related allowance	34,833		34,605
Average recorded investment	92,975		100,017
Interest income recognized	6		24
With an allowance recorded: | Commercial business loans | Business loans
Financing Receivable, Impaired [Line Items]
Recorded investment	26,146		21,303
Unpaid principal balance	26,146		21,303
Related allowance	8,378		7,055
Average recorded investment	22,917		22,277
Interest income recognized	0		0
With an allowance recorded: | Commercial business loans | Energy
Financing Receivable, Impaired [Line Items]
Recorded investment	53,287		74,745
Unpaid principal balance	71,555		88,987
Related allowance	26,217		27,350
Average recorded investment	67,592		73,637
Interest income recognized	6		24
With an allowance recorded: | Construction | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	0		159
Unpaid principal balance	0		159
Related allowance	0		24
Average recorded investment	106		53
Interest income recognized	0		0
With an allowance recorded: | Real estate | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	1,333		1,342
Unpaid principal balance	1,333		1,342
Related allowance	29		20
Average recorded investment	1,339		3,000
Interest income recognized	0		0
With an allowance recorded: | Real estate | Commercial
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0
Unpaid principal balance	0		0
Related allowance	0		0
Average recorded investment	0		0
Interest income recognized	0		0
With an allowance recorded: | Real estate | Secured by 1-4 family
Financing Receivable, Impaired [Line Items]
Recorded investment	1,561		326
Unpaid principal balance	1,561		326
Related allowance	166		113
Average recorded investment	738		435
Interest income recognized	0		0
With an allowance recorded: | Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	200		200
Unpaid principal balance	200		200
Related allowance	30		30
Average recorded investment	200		67
Interest income recognized	0		0
With an allowance recorded: | Leases
Financing Receivable, Impaired [Line Items]
Recorded investment	83		83
Unpaid principal balance	83		83
Related allowance	13		13
Average recorded investment	83		548
Interest income recognized	0		0
Combined:
Financing Receivable, Impaired [Line Items]
Recorded investment	149,427		170,862
Unpaid principal balance	172,895		196,997
Related allowance	34,833		34,605
Average recorded investment	163,716	$ 181,100	174,117
Interest income recognized	6		62
Combined: | Commercial business loans | Business loans
Financing Receivable, Impaired [Line Items]
Recorded investment	51,295		45,171
Unpaid principal balance	56,239		49,295
Related allowance	8,378		7,055
Average recorded investment	47,212		34,638
Interest income recognized	0		0
Combined: | Commercial business loans | Energy
Financing Receivable, Impaired [Line Items]
Recorded investment	92,337		121,498
Unpaid principal balance	110,861		143,509
Related allowance	26,217		27,350
Average recorded investment	111,777		127,712
Interest income recognized	6		24
Combined: | Construction | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	0		159
Unpaid principal balance	0		159
Related allowance	0		24
Average recorded investment	106		2,831
Interest income recognized	0		0
Combined: | Real estate | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	1,333		1,342
Unpaid principal balance	1,333		1,342
Related allowance	29		20
Average recorded investment	1,339		3,000
Interest income recognized	0		0
Combined: | Real estate | Commercial
Financing Receivable, Impaired [Line Items]
Recorded investment	2,618		2,083
Unpaid principal balance	2,618		2,083
Related allowance	0		0
Average recorded investment	2,261		4,483
Interest income recognized	0		38
Combined: | Real estate | Secured by 1-4 family
Financing Receivable, Impaired [Line Items]
Recorded investment	1,561		326
Unpaid principal balance	1,561		326
Related allowance	166		113
Average recorded investment	738		435
Interest income recognized	0		0
Combined: | Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	200		200
Unpaid principal balance	200		200
Related allowance	30		30
Average recorded investment	200		67
Interest income recognized	0		0
Combined: | Leases
Financing Receivable, Impaired [Line Items]
Recorded investment	83		83
Unpaid principal balance	83		83
Related allowance	13		13
Average recorded investment	83		951
Interest income recognized	$ 0		$ 0

XML

LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 6) $ in Thousands	Mar. 31, 2017 USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 54,060
Non-accrual	146,549
Current	16,545,593
Total	16,746,202
Premium finance loans past due 90 days and still accruing	5,100
Commercial business loans | Business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	44,998
Non-accrual	49,750
Current	6,484,545
Total	6,579,293
Commercial business loans | Energy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
Non-accrual	92,337
Current	808,855
Total	901,192
Mortgage finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
Non-accrual	0
Current	3,371,598
Total	3,371,598
Construction | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,553
Non-accrual	0
Current	2,081,308
Total	2,083,861
Construction | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
Non-accrual	0
Current	24,750
Total	24,750
Real estate | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,445
Non-accrual	0
Current	2,652,833
Total	2,654,278
Real estate | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,332
Non-accrual	1,561
Current	210,659
Total	216,552
Real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	274
Non-accrual	2,618
Current	689,414
Total	692,306
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	458
Non-accrual	200
Current	35,601
Total	36,259
Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
Non-accrual	83
Current	186,030
Total	186,113
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	37,966
30-59 Days Past Due | Commercial business loans | Business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	30,716
30-59 Days Past Due | Commercial business loans | Energy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
30-59 Days Past Due | Mortgage finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
30-59 Days Past Due | Construction | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,553
30-59 Days Past Due | Construction | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
30-59 Days Past Due | Real estate | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	112
30-59 Days Past Due | Real estate | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,225
30-59 Days Past Due | Real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
30-59 Days Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	360
30-59 Days Past Due | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	7,295
60-89 Days Past Due | Commercial business loans | Business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	6,923
60-89 Days Past Due | Commercial business loans | Energy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60-89 Days Past Due | Mortgage finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60-89 Days Past Due | Construction | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60-89 Days Past Due | Construction | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60-89 Days Past Due | Real estate | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60-89 Days Past Due | Real estate | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60-89 Days Past Due | Real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	274
60-89 Days Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	98
60-89 Days Past Due | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
Greater Than 90 Days and Accruing(1)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	8,799	[1]
Greater Than 90 Days and Accruing(1) | Commercial business loans | Business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	7,359	[1]
Greater Than 90 Days and Accruing(1) | Commercial business loans | Energy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	[1]
Greater Than 90 Days and Accruing(1) | Mortgage finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	[1]
Greater Than 90 Days and Accruing(1) | Construction | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	[1]
Greater Than 90 Days and Accruing(1) | Construction | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	[1]
Greater Than 90 Days and Accruing(1) | Real estate | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,333	[1]
Greater Than 90 Days and Accruing(1) | Real estate | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	107	[1]
Greater Than 90 Days and Accruing(1) | Real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	[1]
Greater Than 90 Days and Accruing(1) | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	[1]
Greater Than 90 Days and Accruing(1) | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 0	[1]

[1] Loans past due 90 days and still accruing includes premium finance loans of $5.1 million. These loans are generally secured by obligations of insurance carriers to refund premiums on canceled insurance policies. The refund of premiums from the insurance carriers can take 180 days or longer from the cancellation date.

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 7) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Financing Receivable, Modifications [Line Items]
Non-accrual loans that met the criteria for restructured unfunded commitments	$ 18,500		$ 18,100
Number of restructured loans	2	2
Pre-restructuring outstanding recorded investment	$ 1,669	$ 14,235
Post-restructuring outstanding recorded investment	$ 1,669	$ 14,235
Energy loans
Financing Receivable, Modifications [Line Items]
Number of restructured loans	1	2
Pre-restructuring outstanding recorded investment	$ 1,070	$ 14,235
Post-restructuring outstanding recorded investment	$ 1,070	$ 14,235
Commercial business loans
Financing Receivable, Modifications [Line Items]
Number of restructured loans	1
Pre-restructuring outstanding recorded investment	$ 599
Post-restructuring outstanding recorded investment	$ 599

XML

LOANS AND ALLOWANCE FOR LOAN LOSSES - TDR Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Financing Receivable, Modifications [Line Items]
Details of how restructured loans were modified	$ 1,669	$ 14,235
Extended maturity
Financing Receivable, Modifications [Line Items]
Details of how restructured loans were modified	1,070	0
Adjusted payment schedule
Financing Receivable, Modifications [Line Items]
Details of how restructured loans were modified	0	12,916
Combination of maturity extension and payment schedule adjustment
Financing Receivable, Modifications [Line Items]
Details of how restructured loans were modified	0	1,319
Other
Financing Receivable, Modifications [Line Items]
Details of how restructured loans were modified	$ 599	$ 0

XML

OREO AND VALUATION ALLOWANCE FOR LOSSES ON OREO (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017		Mar. 31, 2016
Real Estate Acquired Through Foreclosure [Roll Forward]
Beginning balance	$ 18,961	[1],[2]	$ 278
Additions	0		17,398
Sales	(128)		(91)
Valuation allowance for OREO	0		0
Direct write-downs	0		0
Ending balance	$ 18,833	[1],[2]	$ 17,585

[1] Loans held for investment and OREO are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions.

[2] OREO is transferred from loans to OREO at fair value less selling costs.

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CERTAIN TRANSFERS OF FINANCIAL ASSETS (Details) $ in Thousands	Mar. 31, 2017 USD ($) loan	Dec. 31, 2016 USD ($) loan	Mar. 31, 2016 USD ($)
Transfers and Servicing [Abstract]
Number of loans in servicing portfolio | loan	13,955	8,618
Outstanding principal balance of loans in servicing portfolio Financial Assets, Principal Amount Outstanding	$ 3,549,400	$ 2,200,000
Escrow fund deposits related to servicing assets	31,400	$ 21,000
Estimated exposure related to servicing assets	$ 971		$ 178

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CERTAIN TRANSFERS OF FINANCIAL ASSETS (Details 1) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Transfers and Servicing [Abstract]
Unpaid principal balance	$ 880,156	$ 980,414
Fair value	884,647	968,929
Fair value over/(under) unpaid principal balance	$ 4,491	$ (11,485)

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CERTAIN TRANSFERS OF FINANCIAL ASSETS (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Loans Receivable Held-for-sale, Net, Reconciliation to Cash Flow [Roll Forward]
Beginning balance	$ 968,929	$ 86,075
Loans purchased	1,299,542	364,919
Loans Receivable Held-for-sale, Reconciliation to Cash Flow, Deductions from Held-for-sale	(1,399,800)	(357,018)
Change in fair value	15,976	726
Ending balance	$ 884,647	$ 94,702

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CERTAIN TRANSFERS OF FINANCIAL ASSETS (Details 3) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Valuation allowance:
Servicing asset, net(1)	$ 45,526	$ 4,253
MSR
Servicing asset:
Balance, beginning of year(1)	28,536	423
Capitalized servicing rights	18,094	3,903
Amortization	(1,104)	(40)
Balance, end of period	45,526	4,286
Valuation allowance:
Balance, beginning of year	0	0
Increase in valuation allowance	0	33
Balance, end of period	0	33
Servicing asset, net(1)	$ 48,013	$ 4,253

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CERTAIN TRANSFERS OF FINANCIAL ASSETS (Details 4)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Transfers and Servicing [Abstract]
Average discount rates (percent)	9.91%	9.96%
Expected prepayment speeds (percent)	8.10%	7.91%
Weighted average life, in years	7 years 10 months 24 days	8 years

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CERTAIN TRANSFERS OF FINANCIAL ASSETS (Details 5) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Transfers and Servicing [Abstract]
50 bp adverse change in prepayment speed	$ (4,471)	$ (2,833)
100 bp adverse change in prepayment speed	$ (10,835)	$ (6,812)

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FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments whose contract amounts represented credit risk	$ 5,829,713	$ 5,704,381
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments whose contract amounts represented credit risk	$ 171,451	$ 171,266

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REGULATORY MATTERS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2009
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Assets	$ 20,864,874		$ 21,697,134	$ 15,000,000
Common Equity Tier 1 Capital	$ 1,881,329		$ 1,841,219
Tier 1 capital	10.93%		10.23%
Total capital	13.30%		12.48%
Tier 1 leverage	10.27%		9.34%
Mortgage finance	$ 3,371,598		$ 4,497,338
Mortgage finance, average balance	$ 2,800,000
Common Equity Tier 1, Capital to Risk Weighted Assets	9.61%		8.97%
Capital	$ 2,603,536		$ 2,561,663
Tier One Risk Based Capital	2,139,542		2,101,071
Tier One Leverage Capital	$ 2,139,542		2,101,071
Common Stock, Dividends, Per Share, Declared	$ 0	$ 0
Common Stock, Dividends, Per Share, Cash Paid	$ 0	$ 0
Subsidiaries [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 Capital	$ 1,778,152		$ 1,735,496
Tier 1 capital	9.89%		9.23%
Total capital	11.97%		11.19%
Tier 1 leverage	9.29%		8.42%
Common Equity Tier 1, Capital to Risk Weighted Assets	9.09%		8.45%
Common Equity Tier 1, Capital Required to be Well Capitalized	$ 1,272,197		$ 1,334,244
Common Equity Tier 1, Capital Required to be Well Capitalized to Risk Weighted Assets	6.50%		6.50%
Capital	$ 2,341,922		$ 2,297,528
Capital Required to be Well Capitalized	$ 1,957,226		$ 2,052,683
Capital Required to be Well Capitalized to Risk Weighted Assets	10.00%		10.00%
Tier One Risk Based Capital	$ 1,936,365		$ 1,895,348
Tier One Risk Based Capital Required to be Well Capitalized	$ 1,565,781		$ 1,642,147
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%		8.00%
Tier One Leverage Capital	$ 1,936,365		$ 1,895,348
Tier One Leverage Capital Required to be Well Capitalized	$ 1,041,888		$ 1,125,087
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%		5.00%
Advanced Approach, Phase-In Schedule [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1, Capital Required for Capital Adequacy	$ 1,125,456		$ 1,052,205
Common Equity Tier 1, Capital Required for Capital Adequacy to Risk Weighted Assets	5.75%		5.13%
Capital Required for Capital Adequacy	$ 1,810,516		$ 1,770,766
Capital Required for Capital Adequacy to Risk Weighted Assets	9.25%		8.63%
Tier One Risk Based Capital Required for Capital Adequacy	$ 1,419,053		$ 1,360,154
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	7.25%		6.63%
Tier One Leverage Capital Required for Capital Adequacy	$ 833,706		$ 900,268
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%		4.00%
Advanced Approach, Phase-In Schedule [Member] | Subsidiaries [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1, Capital Required for Capital Adequacy	$ 1,125,405		$ 1,051,989
Common Equity Tier 1, Capital Required for Capital Adequacy to Risk Weighted Assets	5.75%		5.13%
Capital Required for Capital Adequacy	$ 1,810,434		$ 1,770,421
Capital Required for Capital Adequacy to Risk Weighted Assets	9.25%		8.63%
Tier One Risk Based Capital Required for Capital Adequacy	$ 1,418,989		$ 1,359,888
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	7.25%		6.63%
Tier One Leverage Capital Required for Capital Adequacy	$ 833,510		$ 900,070
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%		4.00%
Advanced Approach, Phased-In [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1, Capital Required for Capital Adequacy	$ 1,370,121		$ 1,437,159
Common Equity Tier 1, Capital Required for Capital Adequacy to Risk Weighted Assets	7.00%		7.00%
Capital Required for Capital Adequacy	$ 2,055,181		$ 2,155,715
Capital Required for Capital Adequacy to Risk Weighted Assets	10.50%		10.50%
Tier One Risk Based Capital Required for Capital Adequacy	$ 1,663,718		$ 1,745,103
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	8.50%		8.50%
Tier One Leverage Capital Required for Capital Adequacy	$ 833,706		$ 900,268
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%		4.00%
Advanced Approach, Phased-In [Member] | Subsidiaries [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1, Capital Required for Capital Adequacy	$ 1,370,058		$ 1,436,863
Common Equity Tier 1, Capital Required for Capital Adequacy to Risk Weighted Assets	7.00%		7.00%
Capital Required for Capital Adequacy	$ 2,055,088		$ 2,155,295
Capital Required for Capital Adequacy to Risk Weighted Assets	10.50%		10.50%
Tier One Risk Based Capital Required for Capital Adequacy	$ 1,663,642		$ 1,744,762
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	8.50%		8.50%
Tier One Leverage Capital Required for Capital Adequacy	$ 833,510		$ 900,070
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%		4.00%

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STOCK-BASED COMPENSATION (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	May 19, 2015
Restricted stock units, additional disclosures
Compensation expense	$ 4,559	$ 459
Unrecognized compensation expense related to unvested stock-settled awards	$ 20,117
Weighted average period over which expense is expected to be recognized, in years	3 years 2 months
SARs
Restricted stock units, additional disclosures
Compensation expense	$ 72	82
RSUs
Restricted stock units, additional disclosures
Compensation expense	1,593	1,048
Restricted stock
Restricted stock units, additional disclosures
Compensation expense	4	2
Cash-settled performance units
Restricted stock units, additional disclosures
Compensation expense	$ 2,890	$ (673)
2015 Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock shares that can be issued for compensation under the Plan			2,550,000

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FAIR VALUE DISCLOSURES (Assets and Liabilities) (Details) - USD ($) $ in Thousands		Mar. 31, 2017		Dec. 31, 2016		Mar. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale		$ 42,203		$ 24,874
Loans held for sale		884,647		968,929
OREO		18,833	[1],[2]	18,961	[1],[2]	$ 17,585	$ 278
Derivative assets		24,245		37,878
Derivative liabilities		(27,697)		(26,240)
Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[3]	14,376		15,652
Municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[4]			275
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[5],[6]	11,144		8,947
Fair value measurements, recurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	[7]	0		0
Derivative assets	[7]	0		0
Derivative liabilities	[7]	0		0
Deferred Compensation Liability, Current and Noncurrent	[7]	4,040
Defined Benefit Plan, Fair Value of Plan Assets				1,811
Fair value measurements, recurring basis | Level 1 | Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8]	0		0
Fair value measurements, recurring basis | Level 1 | Municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8]			0
Fair value measurements, recurring basis | Level 1 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8],[9]	4,004		1,786
Fair value measurements, recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	[7]	884,647		968,929
Derivative assets	[7]	24,245		37,878
Derivative liabilities	[7]	(27,697)		(26,240)
Deferred Compensation Liability, Current and Noncurrent	[7]	0
Defined Benefit Plan, Fair Value of Plan Assets				0
Fair value measurements, recurring basis | Level 2 | Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8]	14,376		15,652
Fair value measurements, recurring basis | Level 2 | Municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8]			275
Fair value measurements, recurring basis | Level 2 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8],[9]	7,140		7,161
Fair value measurements, recurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	[7]	0		0
Derivative assets	[7]	0		0
Derivative liabilities	[7]	0		0
Deferred Compensation Liability, Current and Noncurrent	[7]	0
Defined Benefit Plan, Fair Value of Plan Assets				0
Fair value measurements, recurring basis | Level 3 | Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8]	0		0
Fair value measurements, recurring basis | Level 3 | Municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8]			0
Fair value measurements, recurring basis | Level 3 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8],[9]	0		0
Fair value measurements, nonrecurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	[1],[10]	0		0
OREO	[1],[2]	0		0
Fair value measurements, nonrecurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	[1],[10]	0		0
OREO	[1],[2]	0		0
Fair value measurements, nonrecurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	[1],[10]	50,780		52,323
OREO	[1],[2]	$ 18,833		$ 18,961

[1] Loans held for investment and OREO are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions.

[2] OREO is transferred from loans to OREO at fair value less selling costs.

[3] Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

[4] Yields have been adjusted to a tax equivalent basis assuming a 35% federal tax rate.

[5] Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.

[6] These equity securities do not have a stated maturity.

[7] Derivative assets and liabilities are measured at fair value on a recurring basis, generally quarterly.

[8] Securities are measured at fair value on a recurring basis, generally monthly.

[9] Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.

[10] Includes impaired loans that have been measured for impairment at the fair value of the loan’s collateral.

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FAIR VALUE DISCLOSURES (Financial Instruments) (Details) - USD ($) $ in Thousands		Mar. 31, 2017		Dec. 31, 2016		Mar. 31, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
OREO		$ 18,833	[1],[2]	$ 18,961	[1],[2]	$ 17,585	$ 278
Securities, available-for-sale		42,203		24,874
Loans held for sale		884,647		968,929
Derivative assets		24,245		37,878
Servicing Asset at Fair Value, Amount		45,526		28,536
Senior Notes		281,134		281,044
Derivative liabilities		27,697		26,240
Level 1 | Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		2,920,934		2,839,352
Securities, available-for-sale		4,004		1,786
Level 1 | Estimated fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		2,920,934		2,839,352
Securities, available-for-sale		4,004		1,786
Level 1 | Fair value measurements, nonrecurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
OREO	[1],[2]	0		0
Loans held for investment, net	[1],[3]	0		0
Level 2 | Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities, available-for-sale		38,199		23,088
Loans held for sale		884,647		968,929
Derivative assets		24,245		37,878
Federal funds purchased		134,539		101,800
Customer repurchase agreements		7,295		7,775
Other borrowings		1,500,000		2,000,000
Senior Notes		281,134		281,044
Derivative liabilities		27,697		26,240
Level 2 | Estimated fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities, available-for-sale		38,199		23,088
Loans held for sale		884,647		968,929
Derivative assets		24,245		37,878
Federal funds purchased		134,539		101,800
Customer repurchase agreements		7,295		7,775
Other borrowings		1,500,000		2,000,000
Senior Notes		330,552		304,672
Derivative liabilities		27,697		26,240
Level 2 | Fair value measurements, nonrecurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
OREO	[1],[2]	0		0
Loans held for investment, net	[1],[3]	0		0
Level 3 | Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment, net		16,498,503		17,330,223
Deposits		16,605,380		17,016,831
Trust preferred subordinated debentures		113,406		113,406
Level 3 | Estimated fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment, net		16,507,087		17,347,199
Deposits		16,604,650		17,017,221
Trust preferred subordinated debentures		113,406		113,406
Level 3 | Fair value measurements, nonrecurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of impaired loans		70,100		74,100
Allowance allocation of impaired loans		19,300		21,800
OREO	[1],[2]	18,833		18,961
Loans held for investment, net	[1],[3]	$ 50,780		$ 52,323

[1] Loans held for investment and OREO are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions.

[2] OREO is transferred from loans to OREO at fair value less selling costs.

[3] Includes impaired loans that have been measured for impairment at the fair value of the loan’s collateral.

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DERIVATIVE FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Asset Derivative	$ 26,643	$ 39,632
Liability Derivative	30,095	27,994
Offsetting derivative liability	(2,398)	(1,754)
Offsetting derivative asset	(2,398)	(1,754)
Derivative asset, net	24,245	37,878
Derivative liability, net	$ 27,697	26,240
Description of credit risk exposure on interest rate swaps and caps	Our credit exposure on derivative instruments is limited to the net favorable value and interest payments by each counterparty. In such cases collateral may be required from the counterparties involved if the net value of the derivative instruments exceed a nominal amount considered to be immaterial
Credit exposure relating to interest rate swaps and caps	$ 24,200	37,900
Cash collateral pledge for derivatives	26,500	$ 24,800
Interest-bearing deposits
Derivatives, Fair Value [Line Items]
Cash collateral pledge for derivatives	24,100
Accrued interest receivable and other assets
Derivatives, Fair Value [Line Items]
Cash collateral pledge for derivatives	$ 2,400
Commercial loan/lease interest rate swaps | Non-hedging interest rate derivatives/swaps | Commercial loan/lease | Weighted-average interest rate received
Derivatives, Fair Value [Line Items]
Weighted-average interest rate received and paid	3.40%	3.17%
Commercial loan/lease interest rate swaps | Non-hedging interest rate derivatives/swaps | Commercial loan/lease | Weighted-average interest rate paid
Derivatives, Fair Value [Line Items]
Weighted-average interest rate received and paid	4.61%	4.58%
Commercial loan/lease interest rate caps
Derivatives, Fair Value [Line Items]
Weighted-average interest rate received and paid	2.44%	2.45%
Financial institution counterparties: | Commercial loan/lease interest rate swaps | Non-hedging interest rate derivatives/swaps | Commercial loan/lease
Derivatives, Fair Value [Line Items]
Notional Amount	$ 1,256,666	$ 1,144,367
Asset Derivative	2,398	1,754
Liability Derivative	22,489	25,421
Financial institution counterparties: | Commercial loan/lease interest rate caps | Non-hedging interest rate derivatives/swaps | Commercial loan/lease
Derivatives, Fair Value [Line Items]
Notional Amount	231,125	210,996
Asset Derivative	639	819
Liability Derivative	0	0
Customer counterparties: | Commercial loan/lease interest rate swaps | Non-hedging interest rate derivatives/swaps | Commercial loan/lease
Derivatives, Fair Value [Line Items]
Notional Amount	1,256,666	1,144,367
Asset Derivative	22,489	25,421
Liability Derivative	2,398	1,754
Customer counterparties: | Commercial loan/lease interest rate caps | Non-hedging interest rate derivatives/swaps | Commercial loan/lease
Derivatives, Fair Value [Line Items]
Notional Amount	231,125	210,996
Asset Derivative	0	0
Liability Derivative	639	819
Loan purchase commitments | Interest rate derivative | Economic hedging interest rate derivatives
Derivatives, Fair Value [Line Items]
Notional Amount	222,492	237,805
Asset Derivative	1,117	1,351
Liability Derivative	0	0
Forward sales commitments | Interest rate derivative | Economic hedging interest rate derivatives
Derivatives, Fair Value [Line Items]
Notional Amount	1,030,393	1,218,000
Asset Derivative	0	10,287
Liability Derivative	$ 4,569	$ 0