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 September 30, 2015

¨ 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	¨

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 October 21, 2015, 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 45,844,361

Texas Capital Bancshares, Inc.

Form 10-Q

Quarter Ended September 30, 2015

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	28
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	29
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	45
Item 4.	Controls and Procedures	48
Part II. Other Information
Item 1.	Legal Proceedings	48
Item 1A.	Risk Factors	48
Item 6.	Exhibits	49
Signatures		50

2

PART I – FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

TEXAS CAPITAL BANCSHARES, INC.

CONSOLIDATED BALANCE SHEETS

(In thousands except share data)

	September 30, 2015			December 31, 2014
	(Unaudited)
Assets
Cash and due from banks	$	101,758		$	96,524
Interest-bearing deposits	2,320,192			1,233,990
Federal funds sold and securities purchased under resale agreements	25,000			—
Securities, available-for-sale	31,998			41,719
Loans held for sale, at fair value	1,062			—
Loans held for investment, mortgage finance	4,312,790			4,102,125
Loans held for investment (net of unearned income)	11,562,828			10,154,887
Less: Allowance for loan losses	130,540			100,954
Loans held for investment, net	15,745,078			14,156,058
Premises and equipment, net	17,772			17,368
Accrued interest receivable and other assets	403,040			333,699
Goodwill and intangible assets, net	20,095			20,588
Total assets	$	18,665,995		$	15,899,946
Liabilities and Stockholders’ Equity
Liabilities:
Deposits:
Non-interest-bearing	$	6,545,273		$	5,011,619
Interest-bearing	8,620,072			7,348,972
Interest-bearing in foreign branches	—			312,709
Total deposits	15,165,345			12,673,300
Accrued interest payable	2,694			4,747
Other liabilities	154,665			145,622
Federal funds purchased and repurchase agreements	103,834			92,676
Other borrowings	1,250,000			1,100,005
Subordinated notes	286,000			286,000
Trust preferred subordinated debentures	113,406			113,406
Total liabilities	17,075,944			14,415,756
Stockholders’ equity:
Preferred stock, $.01 par value, $1,000 liquidation value:
Authorized shares – 10,000,000
Issued shares – 6,000,000 shares issued at September 30, 2015 and December 31, 2014	150,000			150,000
Common stock, $.01 par value:
Authorized shares – 100,000,000
Issued shares – 45,839,781 and 45,735,424 at September 30, 2015 and December 31, 2014, respectively	458			457
Additional paid-in capital	713,209			709,738
Retained earnings	725,502			622,714
Treasury stock (shares at cost: 417 at September 30, 2015 and December 31, 2014)	(8		)	(8		)
Accumulated other comprehensive income, net of taxes	890			1,289
Total stockholders’ equity	1,590,051			1,484,190
Total liabilities and stockholders’ equity	$	18,665,995		$	15,899,946

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 September 30,						Nine months ended September 30,
	2015			2014			2015			2014
Interest income
Interest and fees on loans	$	151,749		$	134,618		$	442,529		$	374,724
Securities	298			428			979			1,439
Federal funds sold and securities purchased under resale agreements	193			68			427			116
Deposits in other banks	1,616			176			4,203			435
Total interest income	153,856			135,290			448,138			376,714
Interest expense
Deposits	6,240			4,606			17,510			12,882
Federal funds purchased	56			82			217			292
Repurchase agreements	6			5			14			13
Other borrowings	672			68			1,590			321
Subordinated notes	4,191			4,241			12,573			11,961
Trust preferred subordinated debentures	643			627			1,892			1,862
Total interest expense	11,808			9,629			33,796			27,331
Net interest income	142,048			125,661			414,342			349,383
Provision for credit losses	13,750			6,500			39,250			15,500
Net interest income after provision for credit losses	128,298			119,161			375,092			333,883
Non-interest income
Service charges on deposit accounts	2,096			1,817			6,339			5,277
Trust fee income	1,222			1,190			3,709			3,714
Bank owned life insurance (BOLI) income	484			517			1,444			1,547
Brokered loan fees	4,885			3,821			14,394			10,002
Swap fees	254			464			3,275			2,098
Other	2,439			2,587			7,257			8,647
Total non-interest income	11,380			10,396			36,418			31,285
Non-interest expense
Salaries and employee benefits	48,583			43,189			142,611			125,141
Net occupancy expense	5,874			5,279			17,373			15,120
Marketing	3,999			4,024			12,142			11,578
Legal and professional	5,510			4,874			15,176			17,457
Communications and technology	5,180			4,928			15,905			13,213
FDIC insurance assessment	4,489			2,775			12,490			8,044
Allowance and other carrying costs for OREO	1			5			16			61
Other	8,052			6,841			23,768			20,383
Total non-interest expense	81,688			71,915			239,481			210,997
Income before income taxes	57,990			57,642			172,029			154,171
Income tax expense	20,876			20,810			61,928			55,653
Net income	37,114			36,832			110,101			98,518
Preferred stock dividends	2,438			2,438			7,313			7,313
Net income available to common stockholders	$	34,676		$	34,394		$	102,788		$	91,205
Other comprehensive income (loss)
Change in net unrealized gain on available-for-sale securities arising during period, before-tax	$	(216	)	$	(295	)	$	(613	)	$	(414	)
Income tax benefit related to net unrealized gain on available-for-sale securities	(75		)	(103		)	(214		)	(145		)
Other comprehensive loss, net of tax	(141		)	(192		)	(399		)	(269		)
Comprehensive income	$	36,973		$	36,640		$	109,702		$	98,249
Basic earnings per common share	$	0.76		$	0.80		$	2.24		$	2.13
Diluted earnings per common share	$	0.75		$	0.78		$	2.21		$	2.09

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, 2013	6,000,000	$	150,000	41,036,787	$	410	$	448,208		$	496,112		(417	)	$	(8	)	$	1,628		$	1,096,350
Comprehensive income:
Net income	—	—		—	—		—			98,518			—		—			—			98,518
Change in unrealized gain on available-for-sale securities, net of taxes of $145	—	—		—	—		—			—			—		—			(269		)	(269		)
Total comprehensive income																					98,249
Tax benefit related to exercise of stock-based awards	—	—		—	—		2,534			—			—		—			—			2,534
Stock-based compensation expense recognized in earnings	—	—		—	—		3,628			—			—		—			—			3,628
Issuance of preferred stock	—	—		—	—		—			—			—		—			—			—
Preferred stock dividend	—	—		—	—		—			(7,313		)	—		—			—			(7,313		)
Issuance of stock related to stock-based awards	—	—		168,535	2		(2,076		)	—			—		—			—			(2,074		)
Issuance of common stock	—	—		1,875,000	19		106,529			—			—		—			—			106,548
Issuance of common stock related to warrants	—	—		99,229	1		(1		)	—			—		—			—			—
Balance at September 30, 2014	6,000,000	$	150,000	43,179,551	$	432	$	558,822		$	587,317		(417	)	$	(8	)	$	1,359		$	1,297,922
Balance at December 31, 2014	6,000,000	$	150,000	45,735,424	$	457	$	709,738		$	622,714		(417	)	$	(8	)	$	1,289		$	1,484,190
Comprehensive income:
Net income	—	—		—	—		—			110,101			—		—			—			110,101
Change in unrealized gain on available-for-sale securities, net of taxes of $215	—	—		—	—		—			—			—		—			(399		)	(399		)
Total comprehensive income																					109,702
Tax benefit related to exercise of stock-based awards	—	—		—	—		1,092			—			—		—			—			1,092
Stock-based compensation expense recognized in earnings	—	—		—	—		3,328			—			—		—			—			3,328
Preferred stock dividend	—	—		—	—		—			(7,313		)	—		—			—			(7,313		)
Issuance of stock related to stock-based awards	—	—		104,357	1		(949		)	—			—		—			—			(948		)
Balance at September 30, 2015	6,000,000	$	150,000	45,839,781	$	458	$	713,209		$	725,502		(417	)	$	(8	)	$	890		$	1,590,051

See accompanying notes to consolidated financial statements.

5

TEXAS CAPITAL BANCSHARES, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS—UNAUDITED

(In thousands)

	Nine months ended September 30,
	2015			2014
Operating activities
Net income from continuing operations	$	110,101		$	98,518
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	39,250			15,500
Depreciation and amortization	12,230			10,583
Bank owned life insurance (BOLI) income	(1,444		)	(1,547		)
Stock-based compensation expense	9,286			11,690
Excess tax expense from stock-based compensation arrangements	(1,134		)	(2,534		)
Net increase in loans held for sale, including proceeds from sales and repayments	(1,062		)	—
(Gain) loss on sale of assets	134			(821		)
Changes in operating assets and liabilities:
Accrued interest receivable and other assets	(77,873		)	(13,762		)
Accrued interest payable and other liabilities	2,339			(1,166		)
Net cash provided by operating activities	91,827			116,461
Investing activities
Maturities and calls of available-for-sale securities	2,430			11,150
Principal payments received on available-for-sale securities	6,677			7,712
Originations of mortgage finance loans	(66,786,322		)	(40,244,845		)
Proceeds from pay-offs of mortgage finance loans	66,575,657			39,254,648
Net increase in loans held for investment, excluding mortgage finance loans	(1,417,605		)	(1,206,606		)
Purchase (disposal) of premises and equipment, net	(3,729		)	(9,110		)
Proceeds from sale of foreclosed assets	1,430			5,823
Net cash used in investing activities	(1,621,462		)	(2,181,228		)
Financing activities
Net increase in deposits	2,492,045			2,458,429
Net expense from issuance of stock related to stock-based awards	(948		)	(2,074		)
Net proceeds from issuance of common stock	—			106,548
Preferred dividends paid	(7,313		)	(7,313		)
Net increase (decrease) in other borrowings	149,995			(397,462		)
Excess tax benefits from stock-based compensation arrangements	1,134			2,534
Net increase in Federal funds purchased and repurchase agreements	11,158			107,521
Net proceeds from issuance of subordinated notes	—			172,375
Net cash provided by financing activities	2,646,071			2,440,558
Net increase in cash and cash equivalents	1,116,436			375,791
Cash and cash equivalents at beginning of period	1,330,514			153,911
Cash and cash equivalents at end of period	$	2,446,950		$	529,702
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	$	35,849		$	26,172
Cash paid during the period for income taxes	70,208			51,722
Transfers from loans/leases to OREO and other repossessed assets	1,177			851

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 clientele 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.

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, 2014, included in our Annual Report on Form 10-K filed with the SEC on February 19, 2015 (the “2014 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 in the near term.

Loans Held for Sale

Through our Mortgage Correspondent Aggregation ("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 government sponsored entities ("GSEs") such as Fannie Mae, Freddie Mac or Ginnie Mae. In some cases, we retain the mortgage servicing rights. 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 in accordance with ASC 825 "Financial Instruments". At the commitment date, we enter into a corresponding forward sale commitment with a third party, typically a GSE, to deliver the loans 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 mortgage servicing rights. Adjustments to reflect unrealized gains and losses resulting from changes in fair value and realized gains and losses upon ultimate sale of the loans are classified as non-interest income in the Consolidated Statements of Income and Other Comprehensive Income.

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   September 30,				Nine months ended   September 30,
	2015		2014		2015		2014
Numerator:
Net income	$	37,114	$	36,832	$	110,101	$	98,518
Preferred stock dividends	2,438		2,438		7,313		7,313
Net income available to common stockholders	34,676		34,394		$	102,788	91,205
Denominator:
Denominator for basic earnings per share— weighted average shares	45,827,902		43,143,580		45,792,470		42,842,143
Effect of employee stock-based awards(1)	216,499		284,859		216,448		333,690
Effect of warrants to purchase common stock	426,989		421,399		416,574		464,305
Denominator for dilutive earnings per share—adjusted weighted average shares and assumed conversions	46,471,390		43,849,838		46,425,492		43,640,138
Basic earnings per common share	$	0.76	$	0.80	$	2.24	$	2.13
Diluted earnings per common share	$	0.75	$	0.78	$	2.21	$	2.09

(1) Stock options, SARs and RSUs outstanding of 101,100 at September 30, 2015 and 50,500 at September 30, 2014 have not been included in diluted earnings per share because to do so would have been anti-dilutive for the periods presented.

(3) SECURITIES

At September 30, 2015, our net unrealized gain on the available-for-sale securities portfolio was $1.4 million compared to $2.0 million at December 31, 2014. As a percent of outstanding balances, the unrealized gain was 4.47% and 4.99% at September 30, 2015, and December 31, 2014, respectively. The decrease in the unrealized gain percentage at September 30, 2015 is related to the reduction in the portfolio balance due to paydowns and maturities.

8

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

	September 30, 2015
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale securities:
Residential mortgage-backed securities	$	22,278	$	1,556	$	—		$	23,834
Municipals	828		3		—			831
Equity securities(1)	7,522		23		(212		)	7,333
	$	30,628	$	1,582	$	(212	)	$	31,998
	December 31, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale securities:
Residential mortgage-backed securities	$	28,957	$	2,108	$	—		$	31,065
Municipals	3,257		10		—			3,267
Equity securities(1)	7,522		16		(151		)	7,387
	$	39,736	$	2,134	$	(151	)	$	41,719

(1) Equity securities consist of Community Reinvestment Act funds.

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

	September 30, 2015
	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	$	64		$	5,730		$	4,567		$	11,917		$	22,278
Estimated fair value	64			5,972			5,089			12,709			23,834
Weighted average yield(3)	5.65		%	4.75		%	5.54		%	2.41		%	3.66		%
Municipals:(2)
Amortized cost	265			563			—			—			828
Estimated fair value	265			566			—			—			831
Weighted average yield(3)	5.46		%	5.69		%	—			—			5.62		%
Equity securities:(4)
Amortized cost	7,522			—			—			—			7,522
Estimated fair value	7,333			—			—			—			7,333
Total available-for-sale securities:
Amortized cost													$	30,628
Estimated fair value													$	31,998

9

	December 31, 2014
	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	$	1		$	9,151		$	5,661		$	14,144		$	28,957
Estimated fair value	1			9,662			6,333			15,069			31,065
Weighted average yield(3)	6.50		%	4.79		%	5.54		%	2.36		%	3.75		%
Municipals:(2)
Amortized cost	1,669			1,588			—			—			3,257
Estimated fair value	1,674			1,593			—			—			3,267
Weighted average yield(3)	5.78		%	5.79		%	—		%	—		%	5.79		%
Equity securities:(4)
Amortized cost	7,522			—			—			—			7,522
Estimated fair value	7,387			—			—			—			7,387
Total available-for-sale securities:
Amortized cost													$	39,736
Estimated fair value													$	41,719

(1) Actual maturities may differ from contractual maturities because borrowers may have the right to call or 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.

Securities with carrying values of approximately $22.5 million were pledged to secure certain borrowings and deposits at September 30, 2015. Of the pledged securities at September 30, 2015, approximately $7.2 million were pledged for certain deposits, and approximately $15.3 million were pledged for repurchase agreements.

The following table discloses, as of September 30, 2015 and December 31, 2014, 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):

September 30, 2015	Less Than 12 Months				12 Months or Longer					Total
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Equity securities	$	—	$	—	$	6,288	$	(212	)	$	6,288	$	(212	)
December 31, 2014	Less Than 12 Months				12 Months or Longer					Total
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Equity securities	$	—	$	—	$	6,349	$	(151	)	$	6,349	$	(151	)

At September 30, 2015, we owned one security with an unrealized loss position. This security is a publicly traded equity fund and is subject to market pricing volatility. We do not believe this unrealized loss is “other-than-temporary”. We have evaluated the near-term prospects of the investment in relation to the severity and duration of the impairment and based on that evaluation have the ability and intent to hold the investment until recovery of fair value.

10

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

At September 30, 2015 and December 31, 2014, loans held for investment were as follows (in thousands):

	September 30, 2015			December 31, 2014
Commercial	$	6,553,639		$	5,869,219
Mortgage finance	4,312,790			4,102,125
Construction	1,864,178			1,416,405
Real estate	3,058,574			2,807,127
Consumer	24,757			19,699
Leases	118,644			99,495
Gross loans held for investment	15,932,582			14,314,070
Deferred income (net of direct origination costs)	(56,964		)	(57,058		)
Allowance for loan losses	(130,540		)	(100,954		)
Total loans held for investment	$	15,745,078		$	14,156,058

Commercial Loans and Leases. Our commercial loan and lease 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 transactional 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 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 interests are typically 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 September 30, 2015 and December 31, 2014 are stated net of $425.0 million and $358.3 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, the impact of the inability of potential purchasers and lessees to obtain financing and a lack of transactions at comparable values.

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At September 30, 2015 and December 31, 2014, 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.

Portfolio Geographic Concentration

As of September 30, 2015, a substantial 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. Additionally, we may make loans to these businesses and individuals secured by assets located outside of Texas. The risks created by this concentration have been considered by management in the determination of the appropriateness of the allowance for loan losses. Management believes the allowance for loan losses is appropriate to cover probable losses inherent in the loan portfolio at each balance sheet date.

Summary of Loan Loss Experience

The reserve for loan losses is comprised of specific reserves for impaired loans and an estimate of losses inherent in the portfolio at the balance sheet date, but not yet identified with specified loans. We regularly evaluate our reserve for loan losses to maintain an appropriate level to absorb estimated loan losses inherent in the loan portfolio. Factors contributing to the determination of reserves include the credit-worthiness of the borrower, changes in the value of pledged collateral and general economic conditions. All loan commitments rated substandard or worse and greater than $500,000 are specifically reviewed for loss potential. For loans deemed to be impaired, a specific allocation is assigned based on the losses expected to be realized from those loans. For purposes of determining the general reserve, the portfolio is segregated by product types to recognize differing risk profiles among categories, and then further segregated by credit grades. Credit grades are assigned to all loans. Each credit grade is assigned a risk factor, or reserve allocation percentage. These risk factors are multiplied by the outstanding principal balance and risk-weighted by product type to calculate the required reserve. A similar process is employed to calculate a reserve assigned to off-balance sheet commitments, specifically unfunded loan commitments and letters of credit, and any needed reserve is recorded in other liabilities. Even though portions of the allowance may be allocated to specific loans, the entire allowance is available for any credit that, in management’s judgment, should be charged off.

We have several pass credit grades that are assigned to loans based on varying levels of risk, ranging from credits that are secured by cash or marketable securities, to watch credits which have all the characteristics of an acceptable credit risk but warrant more than the normal level of monitoring. Within our criticized/classified credit grades are special mention, substandard and doubtful. Special mention loans are those that are currently protected by the current sound worth and paying capacity of the borrower, but that are potentially weak and constitute an additional credit risk. The loan has the potential to deteriorate to a substandard grade due to the existence of financial or administrative deficiencies. Substandard loans have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that we will sustain some loss if the deficiencies are not corrected. Some substandard loans are insufficiently protected by the current sound worth and paying capacity of the borrower and of the collateral pledged and may be considered impaired. Substandard loans can be accruing or can be on non-accrual depending on the circumstances of the individual loans. Loans classified as doubtful have all the weaknesses inherent in substandard loans with the added characteristics that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The possibility of loss is extremely high. All doubtful loans are on non-accrual.

The reserve allocation percentages assigned to each credit grade have been developed based primarily on an analysis of our historical loss rates. The allocations are adjusted for certain qualitative factors for such things as general economic conditions and changes in credit policies and lending standards. Changes in the trend and severity of problem loans can cause the estimation of losses to differ from past experience. In addition, the reserve reflects the results of reviews performed by the Company's independent Credit Review function as reflected in their confirmations of assigned credit grades within the portfolio. The Credit Review function reports to the Credit Risk Committee of the Company's board of directors with administrative oversight from the Company's Chief Risk Officer. The portion of the allowance that is not derived by the allowance allocation percentages compensates 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. Examples of risks that support the Company's maintaining an unallocated reserve include the possibility of precipitous negative changes in economic conditions and borrowers' submission of financial statements or certifications of collateral value that subsequently prove to be materially inaccurate for reason of either misstatement or omission of critical information. These situations, while not common, do not necessarily correlate well with the general risk profile presented by assigned credit grade and product type categories. We evaluate many factors and conditions in determining the unallocated portion of the allowance, including amount and frequency of losses attributable to issues not specifically addressed or included in the determination and application of the allowance allocation percentages. We consider the allowance to be appropriate, given management’s assessment of probable losses within the portfolio as of the evaluation date, the significant growth in the loan and lease portfolio, current economic conditions in the Company’s market areas and other factors.

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The methodology used in the periodic review of reserve appropriateness, which is performed at least quarterly, is designed to be dynamic and responsive to changes in portfolio credit quality. The changes are reflected in the general reserve and in specific reserves as the collectability of larger classified loans is evaluated with new information. As our portfolio has matured, historical loss ratios have been closely monitored, and our reserve appropriateness relies primarily on our loss history. The review of reserve appropriateness is performed by executive management and presented to a committee of our board of directors for their review. The committee reports to the board as part of the board’s review on a quarterly basis of the Company’s consolidated financial statements.

The following tables summarize the credit risk profile of our loan portfolio by internally assigned grades and non-accrual status as of September 30, 2015 and December 31, 2014 (in thousands):

September 30, 2015
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Grade:
Pass	$	6,244,334	$	4,312,790	$	1,845,094	$	3,014,205	$	24,497	$	110,295	$	15,551,215
Special mention	113,542		—		1,771		23,076		26		2,650		141,065
Substandard-accruing	115,565		—		564		14,265		234		—		130,628
Non-accrual	80,198		—		16,749		7,028		—		5,699		109,674
Total loans held for investment	$	6,553,639	$	4,312,790	$	1,864,178	$	3,058,574	$	24,757	$	118,644	$	15,932,582
December 31, 2014
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Grade:
Pass	$	5,738,474	$	4,102,125	$	1,414,671	$	2,785,804	$	19,579	$	91,044	$	14,151,697
Special mention	53,839		—		1,734		8,723		11		4,363		68,670
Substandard-accruing	43,784		—		—		2,653		47		3,915		50,399
Non-accrual	33,122		—		—		9,947		62		173		43,304
Total loans held for investment	$	5,869,219	$	4,102,125	$	1,416,405	$	2,807,127	$	19,699	$	99,495	$	14,314,070

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The following table details activity in the reserve for loan losses by portfolio segment for the nine months ended September 30, 2015 and September 30, 2014. Allocation of a portion of the reserve to one category of loans does not preclude its availability to absorb losses in other categories.

September 30, 2015
(in thousands)	Commercial		Mortgage Finance		Construction			Real Estate			Consumer		Leases			Unallocated			Total
Beginning balance	$	70,654	$	—	$	7,935		$	15,582		$	240	$	1,141		$	5,402		$	100,954
Provision for loan losses	48,689		—		(3,944		)	(4,328		)	154		(221		)	(1,622		)	38,728
Charge-offs	11,278		—		—			346			62		25			—			11,711
Recoveries	2,098		—		397			28			19		27			—			2,569
Net charge-offs (recoveries)	9,180		—		(397		)	318			43		(2		)	—			9,142
Ending balance	$	110,163	$	—	$	4,388		$	10,936		$	351	$	922		$	3,780		$	130,540
Period end amount allocated to:
Loans individually evaluated for impairment	$	9,304	$	—	$	—		$	254		$	—	$	1		$	—		$	9,559
Loans collectively evaluated for impairment	100,859		—		4,388			10,682			351		921			3,780			120,981
Ending balance	$	110,163	$	—	$	4,388		$	10,936		$	351	$	922		$	3,780		$	130,540
September 30, 2014
(in thousands)	Commercial		Mortgage Finance		Construction			Real Estate			Consumer		Leases			Unallocated			Total
Beginning balance	$	39,868	$	—	$	14,553		$	24,210		$	149	$	3,105		$	5,719		$	87,604
Provision for loan losses	20,900		—		(1,611		)	(6,095		)	112		(1,480		)	2,044			13,870
Charge-offs	8,518		—		—			296			101		—			—			8,915
Recoveries	3,480		—		—			45			66		172			—			3,763
Net charge-offs (recoveries)	5,038		—		—			251			35		(172		)	—			5,152
Ending balance	$	55,730	$	—	$	12,942		$	17,864		$	226	$	1,797		$	7,763		$	96,322
Period end amount allocated to:
Loans individually evaluated for impairment	$	5,999	$	—	$	—		$	660		$	—	$	2		$	—		$	6,661
Loans collectively evaluated for impairment	49,731		—		12,942			17,204			226		1,795			7,763			89,661
Ending balance	$	55,730	$	—	$	12,942		$	17,864		$	226	$	1,797		$	7,763		$	96,322

We have traditionally maintained an unallocated 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 unallocated reserves at September 30, 2015 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.

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Our recorded investment in loans as of September 30, 2015, December 31, 2014 and September 30, 2014 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):

September 30, 2015
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	82,050	$	—	$	16,749	$	9,895	$	—	$	5,699	$	114,393
Loans collectively evaluated for impairment	6,471,589		4,312,790		1,847,429		3,048,679		24,757		112,945		15,818,189
Total	$	6,553,639	$	4,312,790	$	1,864,178	$	3,058,574	$	24,757	$	118,644	$	15,932,582
December 31, 2014
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	35,165	$	—	$	—	$	13,880	$	62	$	173	$	49,280
Loans collectively evaluated for impairment	5,834,054		4,102,125		1,416,405		2,793,247		19,637		99,322		14,264,790
Total	$	5,869,219	$	4,102,125	$	1,416,405	$	2,807,127	$	19,699	$	99,495	$	14,314,070
September 30, 2014
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	27,109	$	—	$	—	$	17,904	$	—	$	10	$	45,023
Loans collectively evaluated for impairment	5,594,227		3,774,467		1,640,596		2,344,614		16,502		101,317		13,471,723
Total	$	5,621,336	$	3,774,467	$	1,640,596	$	2,362,518	$	16,502	$	101,327	$	13,516,746

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 September 30, 2015, $884,000 of our non-accrual loans were earning on a cash basis compared to $310,000 at December 31, 2014. 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.

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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 loan agreement. In accordance with ASC 310 Receivables ("ASC 310"), we have also included all restructured loans in our impaired loan totals. The following tables detail our impaired loans, by portfolio class, as of September 30, 2015 and December 31, 2014 (in thousands):

September 30, 2015
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial
Business loans	$	16,370	$	24,185	$	—	$	18,211	$	—
Energy	35,304		35,304		—		16,991		28
Construction
Market risk	16,749		16,749		—		7,444		—
Real estate
Market risk	3,591		3,591		—		3,671		—
Commercial	2,909		2,909		—		3,467		16
Secured by 1-4 family	—		—		—		—		—
Consumer	—		—		—		—		—
Leases	5,695		5,695		—		2,777		—
Total impaired loans with no allowance recorded	$	80,618	$	88,433	$	—	$	52,561	$	44
With an allowance recorded:
Commercial
Business loans	$	28,890	$	28,890	$	8,607	$	32,756	$	—
Energy	1,486		1,486		697		699		—
Construction
Market risk	—		—		—		—		—
Real estate
Market risk	1,785		1,785		29		2,421		—
Commercial	—		—		—		408		—
Secured by 1-4 family	1,610		1,610		225		1,710		—
Consumer	—		—		—		14		—
Leases	4		4		1		98		—
Total impaired loans with an allowance recorded	$	33,775	$	33,775	$	9,559	$	38,106	$	—
Combined:
Commercial
Business loans	$	45,260	$	53,075	$	8,607	$	50,967	$	—
Energy	36,790		36,790		697		17,690		28
Construction
Market risk	16,749		16,749		—		7,444		—
Real estate
Market risk	5,376		5,376		29		6,092		—
Commercial	2,909		2,909		—		3,875		16
Secured by 1-4 family	1,610		1,610		225		1,710		—
Consumer	—		—		—		14		—
Leases	5,699		5,699		1		2,875		—
Total impaired loans	$	114,393	$	122,208	$	9,559	$	90,667	$	44

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December 31, 2014
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial
Business loans	$	9,608	$	11,857	$	—	$	7,334	$	—
Energy	—		—		—		375		25
Construction
Market risk	—		—		—		118		—
Real estate
Market risk	3,735		3,735		—		7,970		—
Commercial	3,521		3,521		—		2,795		—
Secured by 1-4 family	—		—		—		1,210		—
Consumer	—		—		—		—		—
Leases	—		—		—		—		—
Total impaired loans with no allowance recorded	$	16,864	$	19,113	$	—	$	19,802	$	25
With an allowance recorded:
Commercial
Business loans	$	24,553	$	25,553	$	7,433	$	17,705	$	—
Energy	1,004		1,004		272		991		—
Construction
Market risk	—		—		—		—		—
Real estate
Market risk	4,203		4,203		317		5,064		—
Commercial	526		526		79		705		—
Secured by 1-4 family	1,895		1,895		240		2,119		—
Consumer	62		62		9		16		—
Leases	173		173		26		41		—
Total impaired loans with an allowance recorded	$	32,416	$	33,416	$	8,376	$	26,641	$	—
Combined:
Commercial
Business loans	$	34,161	$	37,410	$	7,433	$	25,039	$	—
Energy	1,004		1,004		272		1,366		25
Construction
Market risk	—		—		—		118		—
Real estate
Market risk	7,938		7,938		317		13,034		—
Commercial	4,047		4,047		79		3,500		—
Secured by 1-4 family	1,895		1,895		240		3,329		—
Consumer	62		62		9		16		—
Leases	173		173		26		41		—
Total impaired loans	$	49,280	$	52,529	$	8,376	$	46,443	$	25

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Average impaired loans outstanding during the nine months ended September 30, 2015 and 2014 totaled $90.7 million and $46.3 million, respectively.

The table below provides an age analysis of our past due loans that are still accruing and non-accrual loans, by portfolio class, as of September 30, 2015 (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	$	15,004	$	8,919	$	7,556	$	31,479	$	43,409	$	5,452,730	$	5,527,618
Energy	—		—		2		2		36,789		989,230		1,026,021
Mortgage finance loans	—		—		—		—		—		4,312,790		4,312,790
Construction
Market risk	—		—		—		—		16,749		1,831,340		1,848,089
Secured by 1-4 family	928		—		—		928		—		15,161		16,089
Real estate
Market risk	1,046		1,657		—		2,703		3,620		2,366,647		2,372,970
Commercial	—		15,405		—		15,405		2,909		573,353		591,667
Secured by 1-4 family	414		—		—		414		499		93,024		93,937
Consumer	350		—		—		350		—		24,407		24,757
Leases	—		—		—		—		5,699		112,945		118,644
Total loans held for investment	$	17,742	$	25,981	$	7,558	$	51,281	$	109,674	$	15,771,627	$	15,932,582

(1) Loans past due 90 days and still accruing includes premium finance loans of $6.2 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. As of September 30, 2015 and December 31, 2014, we had $249,000 and $1.8 million, respectively, in loans considered restructured that are not on non-accrual. These loans did not have unfunded commitments at September 30, 2015 or December 31, 2014. Of the non-accrual loans at September 30, 2015 and December 31, 2014, $26.1 million and $12.1 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 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.

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The following tables summarize, for the nine months ended September 30, 2015 and 2014, loans that were restructured during 2015 and 2014 (in thousands):

September 30, 2015
	Number of Restructured Loans	Pre-Restructuring Outstanding Recorded Investment		Post-Restructuring Outstanding Recorded Investment
Commercial business loans	5	$	20,459	$	15,438
Total new restructured loans in 2015	5	$	20,459	$	15,438
September 30, 2014
	Number of Restructured Loans	Pre-Restructuring Outstanding Recorded Investment		Post-Restructuring Outstanding Recorded Investment
Real estate—commercial	1	$	1,441	$	1,430
Commercial business loans	1	$	95	$	95
Total new restructured loans in 2014	2	$	1,536	$	1,525

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 September 30, 2015 or 2014.

The following table provides information on how restructured loans were modified during the nine months ended September 30, 2015 and 2014 (in thousands):

	Nine months ended September 30,
	2015		2014
Extended maturity	$	—	$	1,430
Combination of maturity extension and payment schedule adjustment	15,438		95
Total	$	15,438	$	1,525

As of September 30, 2015 and 2014, 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 September 30,						Nine months ended September 30,
	2015			2014			2015			2014
Beginning balance	$	609		$	685		$	568		$	5,110
Additions	—			—			1,177			851
Sales	(422		)	(68		)	(1,558		)	(5,344		)
Valuation allowance for OREO	—			—			—			—
Direct write-downs	—			—			—			—
Ending balance	$	187		$	617		$	187		$	617

(6) 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 which 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

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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):

	September 30, 2015		December 31, 2014
Commitments to extend credit	$	5,192,901	$	5,324,460
Standby letters of credit	175,125		177,808

(7) 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.

In July 2013, the Federal Reserve published final rules for the adoption of the Basel III regulatory capital framework (the "Basel III Capital Rules"). The Basel III Capital Rules, among other things, (i) introduce a new capital measure called "Common Equity Tier 1" ("CET1"), (ii) specify that Tier 1 capital consist of CET1 and "Additional Tier 1 Capital" instruments meeting specified 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) expand the scope of the deductions/adjustments as compared to existing regulations. The Basel III Capital Rules became effective for us on January 1, 2015 with certain transition provisions fully phased in on January 1, 2019.

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 September 30, 2015, 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, Tier 1 risk-based, 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 September 30, 2015, and December 31, 2014. 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.

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The table below summarizes our capital ratios:

	September 30, 2015		December 31, 2014
Company
Risk-based capital:
CET1(1)	7.69	%	7.89	%
Tier 1 capital	9.10	%	9.46	%
Total capital	11.39	%	11.83	%
Leverage	9.08	%	10.76	%

(1) December 31, 2014 ratio is unaudited.

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 September 30, 2015, our total mortgage finance loans were $4.3 billion compared to the average for the quarter ended September 30, 2015 of $4.0 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. Due to the actual risk profile and liquidity of this asset class, we manage capital allocated to mortgage finance loans based on changing trends in average balances and do not believe that the quarter-end balance is representative of risk characteristics that would justify higher allocations. However, we will 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 and nine months ended September 30, 2015 or 2014.

(8) STOCK-BASED COMPENSATION

On May 19, 2015, the Company's stockholders approved the Texas Capital Bancshares, Inc. 2015 Long-Term Incentive Plan (the "2015 Plan"), which provides for the issuance of up to 2,550,000 shares of common stock for compensation to the Company's key employees, certain key contractors and non-employee directors, subject to increase by up to approximately 751,887 shares underlying outstanding stock-settled awards granted pursuant to prior plans that may be forfeited, expire or may be canceled and available for reuse in the future pursuant to the terms of the 2015 Plan.

The fair value of our stock option and stock appreciation right (“SAR”) grants are estimated at the date of grant using the Black-Scholes option pricing model. The Black-Scholes option pricing model was developed for use in estimating the fair value of traded options which have no vesting restrictions and are fully transferable. In addition, option valuation models require the input of highly subjective assumptions including the expected stock price volatility. Because our employee stock options have characteristics significantly different from those of traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, in management’s opinion, the existing models do not necessarily provide the best single measure of the fair value of our employee stock options.

Stock-based compensation consists of SARs and RSUs granted from 2009 through September 30, 2015.

	Three months ended September 30,				Nine months ended September 30,
(in thousands)	2015		2014		2015		2014
Stock- based compensation expense recognized:
SARs	$	85	$	128	$	282	$	419
RSUs	1,140		972		3,046		3,209
Total compensation expense recognized	$	1,225	$	1,100	$	3,328	$	3,628

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	September 30, 2015
(in thousands)	Options		SARs and RSUs
Unrecognized compensation expense related to unvested awards	$	—	$	14,068
Weighted average period over which expense is expected to be recognized, in years	N/A		3.4

In connection with the 2010 Long-term Incentive Plan, the Company has issued cash-based performance units. A summary of the compensation cost for these units is as follows (in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2015		2014		2015		2014
Cash-based performance units	$	1,420	$	3,357	$	5,958	$	8,062

(9) 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.

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. 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 held for investment and OREO where collateral values have been based on third party appraisals; however, due to current economic conditions, comparative sales data typically used in appraisals may be unavailable or more subjective due to lack of market activity.

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Assets and liabilities measured at fair value at September 30, 2015 and December 31, 2014 are as follows (in thousands):

	Fair Value Measurements Using
September 30, 2015	Level 1		Level 2		Level 3
Available for sale securities:(1)
Residential mortgage-backed securities	$	—	$	23,834	$	—
Municipals	—		831		—
Equity securities(2)	—		7,333		—
Loans held for sale (3)	—		1,062		—
Loans held for investment(4) (6)	—		—		50,000
OREO(5) (6)	—		—		187
Derivative assets(7)	—		46,927		—
Derivative liabilities(7)	—		46,935		—
December 31, 2014
Available for sale securities:(1)
Residential mortgage-backed securities	$	—	$	31,065	$	—
Municipals	—		3,267		—
Equity securities(2)	—		7,387		—
Loans held for sale(3)	—		—		—
Loans(4) (6)	—		—		23,536
OREO(5) (6)	—		—		568
Derivative assets(7)	—		31,176		—
Derivative liabilities(7)	—		31,176		—

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

(2) Equity securities consist of Community Reinvestment Act funds.

(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) Fair value of loans held for investment and OREO is 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.

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 also include those for which the determination of fair value requires significant management judgment or estimation. Currently, we measure fair value for certain loans and OREO on a nonrecurring basis as described below.

Loans held for investment

During nine months ended September 30, 2015 and the year ended December 31, 2014, certain impaired loans held for investment were re-evaluated and reported at fair value through a specific allocation of the allowance for loan losses based upon the fair value of the underlying collateral. The $50.0 million reported fair value above includes impaired loans held for investment at September 30, 2015 with a carrying value of $55.1 million that were reduced by specific allowance allocations totaling $5.1 million based on collateral valuations utilizing Level 3 valuation inputs. The $23.5 million reported fair value above includes impaired loans held for investment at December 31, 2014 with a carrying value of $29.2 million that were reduced by specific valuation allowance allocations totaling $5.7 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 valued based on third party appraisals less estimated selling costs. At September 30, 2015 and December 31, 2014, OREO had a carrying value of $187,000 and $568,000, respectively, with no specific valuation allowance. The fair value of OREO was computed based on third party appraisals, which are Level 3 valuation inputs.

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Fair Value of Financial Instruments

Generally accepted accounting principles require 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):

	September 30, 2015				December 31, 2014
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Cash and cash equivalents	$	2,446,950	$	2,446,950	$	1,330,514	$	1,330,514
Securities, available-for-sale	31,998		31,998		41,719		41,719
Loans held for sale	1,062		1,062		—		—
Loans held for investment, net	15,745,078		15,753,869		14,156,058		14,161,484
Derivative assets	46,927		46,927		31,176		31,176
Deposits	15,165,345		15,165,846		12,673,300		12,673,607
Federal funds purchased	73,650		73,650		66,971		66,971
Customer repurchase agreements	30,184		30,184		25,705		25,705
Other borrowings	1,250,000		1,250,000		1,100,005		1,100,005
Subordinated notes	286,000		292,179		286,000		289,947
Trust preferred subordinated debentures	113,406		113,406		113,406		113,406
Derivative liabilities	46,935		46,935		31,176		31,176

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

Cash and cash equivalents

The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents approximate their fair value, which is characterized as a Level 1 asset in the fair value hierarchy.

Securities

The fair value of investment securities is based on prices obtained from independent pricing services which are based on quoted market prices for the same or similar securities, which is characterized as a Level 2 asset 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 valued under the fair value option is derived from quoted market prices for similar loans, which is characterized as a Level 2 asset 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 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 is estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality.

Derivatives

The estimated fair value of interest rate swaps and caps is obtained from independent pricing services based on quoted market prices for the same or similar derivative contracts, which is characterized as a Level 2 asset in the fair value hierarchy. On a quarterly basis, we independently verify the fair value using an additional independent pricing source. 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. Forward sales commitments are valued based upon the quoted market prices from brokers. As

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such, these loan purchase commitments and forward sales commitments are classified as Level 2 assets 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. Fixed-term certificate of deposit fair values are estimated using a discounted cash flow calculation that applies interest rates currently being offered on similar 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 values reported in the consolidated balance sheets for Federal funds purchased, customer repurchase agreements and other short-term, floating rate borrowings approximate their fair values, which are characterized as Level 2 assets in the fair value hierarchy. The fair values 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, which are characterized as Level 3 liabilities in the fair value hierarchy. The subordinated notes are publicly traded and are valued based on market prices, which are characterized as Level 2 liabilities in the fair value hierarchy.

(10) 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 three months ended September 30, 2015 and 2014, we entered into certain interest rate derivative positions that are 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.

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The notional amounts and estimated fair values of interest rate derivative positions outstanding at September 30, 2015 and December 31, 2014 are presented in the following tables (in thousands):

	September 30, 2015						December 31, 2014
	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	$	1,001,476	$	—	$	45,558	$	866,432	$	361		$	30,162
Commercial loan/lease interest rate caps	217,731		1,366		—		63,414		1,014			—
Customer counterparties:
Commercial loan/lease interest rate swaps	1,001,476		45,558		—		866,432		30,162			361
Commercial loan/lease interest rate caps	217,731		—		1,366		63,414		—			1,014
Economic hedging interest rate derivatives:
Loan purchase commitments	2,085		3		—		—		—			—
Forward sale commitments	2,967		—		11		—		—			—
Gross derivatives			46,927		46,935				31,537			31,537
Offsetting derivative assets/liabilities			—		—				(361		)	(361		)
Net derivatives included in the consolidated balance sheets			$	46,927	$	46,935			$	31,176		$	31,176

The weighted-average receive and pay interest rates for interest rate swaps outstanding at September 30, 2015 and December 31, 2014 were as follows:

	September 30, 2015 Weighted-Average Interest Rate				December 31, 2014 Weighted-Average Interest Rate
	Received		Paid		Received		Paid
Non-hedging interest rate swaps	2.79	%	4.72	%	2.79	%	4.82	%

The weighted-average strike rate for outstanding interest rate caps was 2.19% at September 30, 2015 and 1.44% at December 31, 2014.

Our credit exposure on interest rate swaps and caps is limited to the net favorable value and interest payments of all swaps and caps by each counterparty. In such cases collateral may be required from the counterparties involved if the net value of the swaps and caps exceeds a nominal amount considered to be immaterial. Our credit exposure, net of any collateral pledged, relating to interest rate swaps and caps was approximately $46.9 million at September 30, 2015 and approximately $31.2 million at December 31, 2014, all of which relates to bank customers. Collateral levels are monitored and adjusted on a regular basis for changes in interest rate swap and cap values. At September 30, 2015 and December 31, 2014, we had $47.3 million and $30.2 million, respectively, in cash collateral pledged for these derivatives included in interest-bearing deposits.

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(11) NEW ACCOUNTING PRONOUNCEMENTS

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 is effective for annual and interim periods beginning after December 15, 2017 and is not expected to have a significant impact on our consolidated financial statements.

ASU 2014-12 "Compensation - Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period" ("ASU 2014-12") requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. ASU 2014-12 is intended to resolve the diverse accounting treatments of these types of awards in practice and is effective for annual and interim periods beginning after December 15, 2015. It is not expected to have a significant impact on our consolidated financial statements.

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QUARTERLY FINANCIAL SUMMARIES – UNAUDITED

Consolidated Daily Average Balances, Average Yields and Rates

(In thousands)

	For the three months ended   September 30, 2015						For the three months ended   September 30, 2014
	Average Balance		Revenue/ Expense(1)		Yield/ Rate		Average Balance		Revenue/ Expense(1)		Yield/ Rate
Assets
Securities – taxable	$	32,358	$	287	3.52	%	$	41,716	$	383	3.64	%
Securities – non-taxable(2)	1,162		17		5.80	%	4,697		69		5.83	%
Federal funds sold	308,822		193		0.25	%	105,793		68		0.26	%
Deposits in other banks	2,537,033		1,616		0.25	%	283,062		176		0.25	%
Loans held for sale	570		6		4.18	%	—		—		—
Loans held for investment, mortgage finance loans	3,981,731		30,427		3.03	%	3,452,782		27,275		3.13	%
Loans held for investment	11,302,248		121,316		4.26	%	9,423,548		107,343		4.52	%
Less reserve for loan losses	118,543		—		—		91,427		—		—
Loans held for investment, net of reserve	15,165,436		151,743		3.97	%	12,784,903		134,618		4.18	%
Total earning assets	18,045,381		153,862		3.38	%	13,220,171		135,314		4.06	%
Cash and other assets	486,846						409,727
Total assets	$	18,532,227					$	13,629,898
Liabilities and Stockholders’ Equity
Transaction deposits	$	1,754,940	$	763	0.17	%	$	1,010,003	$	287	0.11	%
Savings deposits	5,858,381		4,616		0.31	%	4,991,779		3,519		0.28	%
Time deposits	536,531		723		0.53	%	485,558		475		0.39	%
Deposits in foreign branches	179,731		138		0.30	%	369,202		325		0.35	%
Total interest bearing deposits	8,329,583		6,240		0.30	%	6,856,542		4,606		0.27	%
Other borrowings	1,459,864		734		0.20	%	310,157		155		0.20	%
Subordinated notes	286,000		4,191		5.81	%	286,000		4,241		5.88	%
Trust preferred subordinated debentures	113,406		643		2.25	%	113,406		627		2.19	%
Total interest bearing liabilities	10,188,853		11,808		0.46	%	7,566,105		9,629		0.50	%
Demand deposits	6,621,159						4,669,772
Other liabilities	152,154						117,418
Stockholders’ equity	1,570,061						1,276,603
Total liabilities and stockholders’ equity	$	18,532,227					$	13,629,898
Net interest income(2)			$	142,054					$	125,685
Net interest margin					3.12	%					3.77	%
Net interest spread					2.92	%					3.56	%
Loan spread					3.80	%					4.02	%

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

(2) Taxable equivalent rates used where applicable.

	For the nine months ended September 30, 2015						For the nine months ended September 30, 2014
	Average Balance		Revenue/ Expense(1)		Yield/ Rate		Average Balance		Revenue/ Expense(1)		Yield/ Rate
Assets
Securities – taxable	$	34,844	$	930	3.57	%	$	44,300	$	1,235	3.73	%
Securities – non-taxable(2)	1,785		75		5.62	%	7,153		314		5.87	%
Federal funds sold	234,033		427		0.24	%	64,963		116		0.24	%
Deposits in other banks	2,222,006		4,203		0.25	%	232,333		435		0.25	%
Loans held for sale	192		6		4.18	%	—		—		—	%
Loans held for investment, mortgage finance loans	4,101,576		91,831		2.99	%	2,772,757		67,288		3.24	%
Loans held for investment	10,918,080		350,692		4.29	%	9,044,694		307,436		4.55	%
Less reserve for loan losses	109,621		—		—		89,753		—		—
Loans held for investment, net of reserve	14,910,035		442,523		3.97	%	11,727,698		374,724		4.27	%
Total earning assets	17,402,895		448,164		3.44	%	12,076,447		376,824		4.17	%
Cash and other assets	479,739						396,388
Total assets	$	17,882,634					$	12,472,835
Liabilities and Stockholders’ Equity
Transaction deposits	$	1,521,657	$	1,665	0.15	%	$	896,878	$	537	0.08	%
Savings deposits	5,786,547		13,368		0.31	%	4,755,604		10,218		0.29	%
Time deposits	500,590		1,886		0.50	%	421,118		1,216		0.39	%
Deposits in foreign branches	242,874		591		0.33	%	358,416		911		0.34	%
Total interest bearing deposits	8,051,668		17,510		0.29	%	6,432,016		12,882		0.27	%
Other borrowings	1,400,523		1,821		0.17	%	423,448		626		0.20	%
Subordinated notes	286,000		12,573		5.88	%	266,769		11,961		5.99	%
Trust preferred subordinated debentures	113,406		1,892		2.23	%	113,406		1,862		2.20	%
Total interest bearing liabilities	9,851,597		33,796		0.46	%	7,235,639		27,331		0.51	%
Demand deposits	6,343,195						3,898,457
Other liabilities	155,466						106,560
Stockholders’ equity	1,532,376						1,232,179
Total liabilities and stockholders’ equity	$	17,882,634					$	12,472,835
Net interest income(2)			$	414,368					$	349,493
Net interest margin					3.18	%					3.87	%
Net interest spread					2.98	%					3.66	%
Loan spread					3.80	%					4.10	%

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

(2) Taxable equivalent rates used where applicable.

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

Forward-Looking Statements

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. Forward-looking statements describe our future plans, strategies and expectations and are based on certain assumptions. 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 our confidence in our strategies and our expectations about financial performance, market growth, market and regulatory trends and developments, acquisitions and divestitures, new technologies, services and opportunities and earnings.

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, increased default rates and loan losses or adverse changes in the industry concentrations of our loan portfolio.

• Developments adversely affecting our commercial, entrepreneurial and professional customers.

• Changes in the U.S. economy in general or the Texas economy specifically resulting in deterioration of credit quality or reduced demand for credit or other financial services we offer, including declines and volatility in oil and gas prices.

• 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 of assumptions supporting our allowance for loan losses causing it to become inadequate as loan quality decreases and losses and charge-offs increase.

• A 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.

• Failure to execute our business strategy, including any inability to expand into new markets and lines of business in Texas, regionally and nationally.

• Loss of access to capital market transactions and other sources of funding, or a failure to effectively balance our funding sources with cash demands by depositors and borrowers.

• Failure to successfully develop and launch new lines of business and new products and services within the expected time frames and budgets, or failure to anticipate and appropriately manage the associated risks.

• Uncertainty in the pricing of mortgage loans that we purchase, and later sell or securitize, as well as competition for the mortgage servicing rights related to these loans.

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

• Legislative and regulatory changes imposing further restrictions and costs on our business, a failure to remain well capitalized or well managed or regulatory enforcement actions against us.

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

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

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

• Failures of counterparties or third party vendors to perform their obligations.

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• Failures or breaches of our information systems that are not effectively managed.

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

• 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.

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

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 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 effectively manage 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, Mortgage Correspondent Aggregation ("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 GSEs such as Fannie Mae, Freddie Mac and Ginnie Mae. In some cases, we retain the mortgage servicing rights ("MSRs"). 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 GSE 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. For the nine months ended September 30, 2015, the transaction volume in this program was not significant.

Volatility in the mortgage industry can drive uncertainty related to the pricing of the mortgage loans we seek to purchase, as well as uncertainty in the pricing of those loans when they are sold or securitized. This volatility may cause the actual returns on those sales or securitization transactions to be less than anticipated, which could adversely affect our overall loan volumes. Additionally, non-bank competitors may have a pricing advantage as they are not subject to the same capital limitations on mortgage loans and MSRs as banks.

The persistent low interest rate environment and expectation of future higher rates has resulted in an increase in the value of MSRs, causing other market participants or competitors who are planning to hold MSRs for a longer term to be more aggressive in their pricing of the underlying loan purchases than a participant like us that does not plan to hold MSRs on a long-term basis.

In connection with our loans held for sale portfolio, we have entered into loan purchase commitments and forward sales commitments. While we believe that our hedging strategies will be successful in mitigating our exposure to interest rate risk, no hedging strategy can completely protect us. Poorly designed strategies, improperly executed transactions, or inaccurate assumptions could increase our risks and losses.

The following discussion and analysis presents the significant factors affecting our financial condition as of September 30, 2015 and December 31, 2014 and results of operations for three and nine months in the periods ended September 30, 2015 and 2014. 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.

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Results of Operations

Summary of Performance

We reported net income of $37.1 million and net income available to common stockholders of $34.7 million, or $0.75 per diluted common share, for the third quarter of 2015 compared to net income of $36.8 million and net income available to common stockholders of $34.4 million, or $0.78 per diluted common share, for the third quarter of 2014. Return on average common equity (“ROE”) was 9.69% and return on average assets ("ROA") was 0.79% for the third quarter of 2015, compared to 12.11% and 1.07%, respectively, for the third quarter of 2014. Net income and net income available to common stockholders for the nine months ended September 30, 2015, totaled $110.1 million and $102.8 million, respectively, or $2.21 per diluted common share, compared to net income and net income available to common stockholders of $98.5 million and $91.2 million, respectively, or $2.09 per diluted common share, for the same period in 2014. ROE was 9.94% and ROA was 0.82% for the nine months ended September 30, 2015 compared to 11.27% and 1.06%, respectively, for the nine months ended September 30, 2014. The ROE decrease resulted from an increase in average common equity for the three and nine months ended September 30, 2015, as compared to the same periods in 2014, related to the equity offering completed in the fourth quarter of 2014. The offering increased total equity by $149.7 million, and also had a dilutive effect on earnings per common share for the three and nine months ended September 30, 2015 as compared to the same periods in 2014. The ROA decrease resulted from a combination of reduced yields on loans and an increase in average liquidity assets during the three and nine months ended September 30, 2015 compared to the same periods of 2014.

Net income increased $282,000, or 1%, for the three months ended September 30, 2015, as compared to the same period in 2014. The increase was primarily the result of a $16.4 million increase in net interest income and a $984,000 increase in non-interest income, offset by a $7.3 million increase in the provision for credit losses, a, $9.8 million increase in non-interest expense and a $66,000 increase in income tax expense. Net income increased $11.6 million, or 12%, during the nine months ended September 30, 2015, primarily as the result of a $65.0 million increase in net interest income and a $5.1 million increase in non-interest income, offset by a $23.8 million increase in the provision for credit losses, an $28.5 million increase in non-interest expense and a $6.2 million increase in income tax expense.

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

Net Interest Income

Net interest income was $142.0 million for the third quarter of 2015, compared to $125.7 million for the third quarter of 2014. The increase was due to an increase in average earning assets of $4.8 billion as compared to the third quarter of 2014. The increase in average earning assets included a $2.4 billion increase in average net loans and a $2.5 billion increase in average liquidity assets, offset by a $12.9 million decrease in average securities. For the quarter ended September 30, 2015, average net loans, liquidity assets and securities represented approximately 84%, 16% and less than 1%, respectively, of average earning assets compared to 97%, 3% and less than 1% for the same quarter of 2014.

Average interest-bearing liabilities for the quarter ended September 30, 2015 increased $2.6 billion from the third quarter of 2014, which included a $1.5 billion increase in interest-bearing deposits and an $1.1 billion increase in other borrowings. Average demand deposits increased from $4.7 billion at September 30, 2014 to $6.6 billion at September 30, 2015. The average cost of total deposits and borrowed funds increased slightly to 0.17% for the third quarter of 2015 compared to 0.16% for the same period of 2014. The cost of interest-bearing liabilities decreased from 0.50% for the quarter ended September 30, 2014 to 0.46% for the same period of 2015.

Net interest income was $414.3 million for the nine months ended September 30, 2015, compared to $349.4 million for the same period in 2014. The increase was due to an increase in average earning assets of $5.3 billion as compared to the nine months ended September 30, 2014. The increase in average earning assets included a $3.2 billion increase in average net loans and a $2.2 billion increase in average liquidity assets, offset by a $14.8 million decrease in average securities. For the nine months ended September 30, 2015, average net loans, liquidity assets and securities represented approximately 86%, 14% and less than 1%, respectively, of average earning assets compared to 97%, 2% and less than 1% for the same quarter of 2014.

Average interest-bearing liabilities for the nine months ended September 30, 2015 increased $2.6 billion as compared to the nine months ended September 30, 2014, which included a $1.6 billion increase in interest-bearing deposits, a $1.6 billion increase in other borrowings and a $19.2 million increase in long-term debt as a result of the Bank’s issuance of subordinated notes in January 2014. Average demand deposits increased from $3.9 billion at September 30, 2014 to $6.3 billion at September 30, 2015. The average cost of total deposits and borrowed funds declined slightly to 0.16% for the nine months ended September 30, 2015 compared to 0.17% for the same period in 2014. The cost of interest-bearing liabilities decreased from 0.51% for the nine months ended September 30, 2015 to 0.46% for the same period of 2015.

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The following table (in thousands) presents changes in taxable-equivalent net interest income between the first quarter of 2014 and the first quarter of 2015 and identifies the changes due to differences in the average volume of earning assets and interest-bearing liabilities and changes due to changes in the average interest rate on those assets and liabilities.

	Three months ended September 30, 2015/2014									Nine months ended September 30, 2015/2014
	Net			Change Due To(1)						Net			Change Due To(1)
	Change			Volume			Yield/Rate			Change			Volume			Yield/Rate
Interest income:
Securities(2)	$	(148	)	$	(138	)	$	(10	)	$	(544	)	$	(500	)	$	(44	)
Loans held for sale	6			6			—			6			6			—
Loans held for investment, mortgage finance loans	3,152			4,178			(1,026		)	24,543			32,247			(7,704		)
Loans held for investment	13,973			21,400			(7,427		)	43,256			63,678			(20,422		)
Federal funds sold	125			130			(5		)	311			302			9
Deposits in other banks	1,440			1,401			39			3,768			3,725			43
Total	18,548			26,977			(8,429		)	71,340			99,458			(28,118		)
Interest expense:
Transaction deposits	476			212			264			1,128			374			754
Savings deposits	1,097			611			486			3,150			2,215			935
Time deposits	248			50			198			670			229			441
Deposits in foreign branches	(187		)	(167		)	(20		)	(320		)	(294		)	(26		)
Borrowed funds	579			575			4			1,195			1,444			(249		)
Long-term debt	(34		)	—			(34		)	642			862			(220		)
Total	2,179			1,281			898			6,465			4,830			1,635
Net interest income	$	16,369		$	25,696		$	(9,327	)	$	64,875		$	94,628		$	(29,753	)

(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 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 3.12% for the third quarter of 2015 compared to 3.77% for the third quarter of 2014. The year-over-year decrease was due to the growth in loans with lower yields, and the $2.5 billion increase in average balances of liquidity assets, which includes Federal funds sold and deposits in other banks. The cost of total deposits and borrowed funds increased to 0.17% for the third quarter of 2015 compared to 0.16% for the third quarter of 2014. The spread on total earning assets, net of the cost of deposits and borrowed funds, was 3.21% for the third quarter of 2015 compared to 3.90% for the third quarter of 2014. The decrease resulted from the significant increase in liquidity assets coupled with a reduction in yields on total loans. Total funding costs, including all deposits, long-term debt and stockholders’ equity, decreased to 0.25% for the third quarter of 2015 compared to 0.28% for the third quarter of 2014. The average interest rate on long-term debt for the third quarter of 2015 was 4.80% compared to 4.84% for the same period of 2014.

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Non-interest Income

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

	Three months ended September 30,				Nine months ended September 30,
	2015		2014		2015		2014
Service charges on deposit accounts	$	2,096	$	1,817	$	6,339	$	5,277
Trust fee income	1,222		1,190		3,709		3,714
Bank owned life insurance (BOLI) income	484		517		1,444		1,547
Brokered loan fees	4,885		3,821		14,394		10,002
Swap fees	254		464		3,275		2,098
Other	2,439		2,587		7,257		8,647
Total non-interest income	$	11,380	$	10,396	$	36,418	$	31,285

Non-interest income increased $984,000 during the three months ended September 30, 2015 compared to the same period of 2014. This increase was primarily due to a $1.1 million increase in brokered loan fees as a result of an increase in mortgage finance volumes during the third quarter of 2015. Service charges increased $279,000 during the three months ended September 30, 2015 compared to the same period of 2014 as a result of an increase in deposit balances year-over-year. Offsetting these increases was a $210,000 decrease in swap fee income during the three months ended September 30, 2015 compared to the same period of 2014. These fees fluctuate from quarter to quarter based on the number and volume of transactions closed during the quarter. Swap fees are fees related to customer swap transactions and are received from the institution that is our counterparty on the transaction. Other non-interest income decreased $148,000 during the three months ended September 30, 2015 compared to the same period of 2014. Other non-interest income includes such items as letter of credit fees and other general operating income, none of which account for 1% or more of total interest income and non-interest income.

Non-interest income increased $5.1 million during the nine months ended September 30, 2015 compared to the same period of 2014. This increase was primarily due to a $4.4 million increase in brokered loan fees as a result of an increase in mortgage finance volumes during the first nine months of 2015. Swap fee income increased $1.2 million during the nine months ended September 30, 2015 compared to the same period of 2014. These fees fluctuate from quarter to quarter based on the number and volume of transactions closed during the quarter. Swap fees are fees related to customer swap transactions and are received from the institution that is our counterparty on the transaction. Service charges increased $1.1 million during the nine months ended September 30, 2015 compared to the same period of 2014 as a result of an increase in deposit balances year-over-year. Offsetting these increases was a $1.4 million decrease in other non-interest income. Other non-interest income includes such items as letter of credit fees and other general operating income, none of which account for 1% or more of total interest income and non-interest income.

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, we may need to introduce new products or enter into new lines of business or expand existing lines of business. Any new product introduction or new market entry could place additional demands on capital and managerial resources.

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Non-interest Expense

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

	Three months ended September 30,				Nine months ended September 30,
	2015		2014		2015		2014
Salaries and employee benefits	$	48,583	$	43,189	$	142,611	$	125,141
Net occupancy expense	5,874		5,279		17,373		15,120
Marketing	3,999		4,024		12,142		11,578
Legal and professional	5,510		4,874		15,176		17,457
Communications and technology	5,180		4,928		15,905		13,213
FDIC insurance assessment	4,489		2,775		12,490		8,044
Allowance and other carrying costs for OREO	1		5		16		61
Other(1)	8,052		6,841		23,768		20,383
Total non-interest expense	$	81,688	$	71,915	$	239,481	$	210,997

(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 third quarter of 2015 increased $9.8 million, or 14%, to $81.7 million from $71.9 million in the third quarter of 2014. The increase is primarily attributable to a $5.4 million increase in salaries and employee benefits expense due to general business growth and as we respond to continued regulatory changes and strategic initiatives.

Net occupancy expense for the three months ended September 30, 2015 increased $595,000 as a result of general business growth and continued build-out needed to support that growth.

Legal and professional expense for three months ended September 30, 2015 increased $636,000 compared to the same quarter of 2014. Our legal and professional expense will continue to fluctuate and could increase in the future due to general business growth and as we respond to continued regulatory changes and strategic initiatives.

Communications and technology expense for the three months ended September 30, 2015 increased $252,000 as a result of general business and customer growth and continued build-out needed to support that growth.

FDIC insurance assessment expense for the three months ended September 30, 2015 increased $1.7 million compared to the same quarter in 2014 as a result of the increase in total assets from September 30, 2014 to September 30, 2015.

Non-interest expense for the nine months ended September 30, 2015 increased $28.5 million, or 13%, to $239.5 million from $211.0 million compared to the same period in 2014. The increase is primarily attributable to a $17.5 million increase in salaries and employee benefits expense due to general business growth and as we respond to continued regulatory changes and strategic initiatives.

Net occupancy expense for the nine months ended September 30, 2015 increased $2.3 million as a result of general business growth and continued build-out needed to support that growth.

Legal and professional expense for the nine months ended September 30, 2015 decreased $2.3 million compared to the same period of 2014. Our legal and professional expense will continue to fluctuate and could increase in the future due to general business growth and as we respond to continued regulatory changes and strategic initiatives.

Communications and technology expense for the nine months ended September 30, 2015 increased $2.7 million as a result of general business and customer growth and continued build-out needed to support that growth.

FDIC insurance assessment expense for the nine months ended September 30, 2015 increased $4.4 million compared to the same quarter in 2014 as a result of the increase in total assets from September 30, 2014 to September 30, 2015.

Analysis of Financial Condition

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Loan Portfolio

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

	September 30, 2015			December 31, 2014
Commercial	$	6,553,639		$	5,869,219
Mortgage finance	4,312,790			4,102,125
Construction	1,864,178			1,416,405
Real estate	3,058,574			2,807,127
Consumer	24,757			19,699
Leases	118,644			99,495
Gross loans held for investment	15,932,582			14,314,070
Deferred income (net of direct origination costs)	(56,964		)	(57,058		)
Allowance for loan losses	(130,540		)	(100,954		)
Total loans held for investment, net	$	15,745,078		$	14,156,058
Loans held for sale	$	1,062		$	—
Total loans	$	15,746,140		$	14,156,058

Total loans held for investment net of allowance for loan losses at September 30, 2015 increased $1.6 billion from December 31, 2014 to $15.7 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 September 30, 2015, we had $1.7 billion in syndicated loans, $379.6 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 September 30, 2015, $23.0 million of our syndicated loans were on non-accrual.

Portfolio Geographic Concentration

As of September 30, 2015, a substantial 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. Additionally, we may make loans to these businesses and individuals, 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. Management believes the allowance for loan losses is appropriate to cover estimated losses on loans at each balance sheet date.

Summary of Loan Loss Experience

The provision for credit losses is a charge to earnings to maintain the reserve for loan losses at a level consistent with management’s assessment of the loan portfolio in light of current economic conditions and market trends. We recorded a provision of $13.8 million during the third quarter of 2015 compared to $6.5 million in the third quarter of 2014 and $14.5 million in the second quarter of 2015. The provision was driven by the application of our methodology. The increase was primarily related to the increase in reserves allocated to energy and other categories of loans, coupled with growth in traditional loans held for investment, excluding mortgage finance loans. In addition, a change in applied risk ratings and reserve allocations which are based in part on historical loss experience as well as changes in the composition of our pass-rated loan portfolio contributed to the increase.

We continue to maintain an unallocated 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

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allowance allocation percentages. We believe the level of unallocated reserves at September 30, 2015 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.

The reserve for loan losses is comprised of specific reserves for impaired loans and an estimate of losses inherent in the portfolio at the balance sheet date, but not yet identified with specified loans. We regularly evaluate our reserve for loan losses to maintain an appropriate level to absorb estimated loan losses inherent in the loan portfolio. Factors contributing to the determination of reserves include the creditworthiness of the borrower, changes in the value of pledged collateral, and general economic conditions. All loan commitments rated substandard or worse and greater than $500,000 are specifically reviewed for loss potential. For loans deemed to be impaired, a specific allocation is assigned based on the losses expected to be realized from those loans. For purposes of determining the general reserve, the portfolio is segregated by credit grades, and then further segregated by product types to recognize differing risk profiles among categories. Credit grades are assigned to all loans. Each credit grade is assigned a risk factor, or reserve allocation percentage. These risk factors are multiplied by the outstanding principal balance and risk-weighted by product type to calculate the required reserve. A similar process is employed to calculate a reserve assigned to off-balance sheet commitments, specifically unfunded loan commitments and letters of credit. Even though portions of the allowance may be allocated to specific loans, the entire allowance is available for any credit that, in management’s judgment, should be charged off.

The reserve allocation percentages assigned to each credit grade have been developed based primarily on an analysis of our historical loss rates. The allocations are adjusted for certain qualitative factors, including general economic conditions, changes in credit policies and lending standards. Changes in the trend and severity of problem loans can cause the estimation of losses to differ from past experience. In addition, the reserve reflects the results of reviews performed by the Company's independent Credit Review function as reflected in their confirmations of assigned credit grades within the portfolio. The Credit Review function reports to the Credit Risk Committee of the Company's board of directors with administrative oversight from the Company's Chief Risk Officer. The portion of the allowance that is not derived by the allowance allocation percentages compensates 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. Examples of risks that support the Company's maintaining an unallocated reserve include the possibility of precipitous negative changes in economic conditions and borrowers' submission of financial statements or certifications of collateral value that subsequently prove to be materially inaccurate for reason of either misstatement or omission of critical information. These situations, while not common, do not necessarily correlate well with the general risk profile presented by assigned credit grade and product type categories. We evaluate many such factors and conditions in determining the unallocated portion of the allowance, including the amount and frequency of losses attributable to issues not specifically addressed or included in the determination and application of the allowance allocation percentages. We believe the allowance is appropriate, given management’s assessment of potential losses within the portfolio as of the evaluation date, the significant growth in the loan and lease portfolio, current economic conditions in the Company’s market areas and other factors.

The methodology used in the periodic review of reserve adequacy, which is performed at least quarterly, is designed to be dynamic and responsive to changes in portfolio credit quality. The changes are reflected in the general reserve and in specific reserves as the collectability of larger classified loans is evaluated with new information. As our portfolio has matured, historical loss ratios have been closely monitored, and our reserve adequacy relies primarily on our loss history. The review of the reserve adequacy is performed by executive management and presented to a committee of our board of directors for their review. The committee reports to the board as part of the board’s review on a quarterly basis of the Company’s consolidated financial statements.

The combined reserve for credit losses, which includes a liability for losses on unfunded commitments, totaled $138.1 million at September 30, 2015, $108.0 million at December 31, 2014 and $102.6 million at September 30, 2014. The total reserve percentage (combined reserves for credit losses to loans held for investment excluding mortgage finance loans) increased to 1.19% at September 30, 2015 from 1.06% and 1.06% at December 31, 2014 and September 30, 2014, respectively.

At September 30, 2015, we believe the reserve is sufficient to cover all expected losses in the portfolio and has been derived from consistent application of the methodology described above.

Should any of the factors considered by management in evaluating the adequacy of the allowance for loan losses change, our estimate of expected losses in the portfolio could also change, which would affect the level of future provisions for loan losses.

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

	Nine months ended   September 30, 2015			Year ended December 31, 2014			Nine months ended   September 30, 2014
Reserve for loan losses:
Beginning balance	$	100,954		$	87,604		$	87,604
Loans charged-off:
Commercial	11,278			9,803			8,518
Real estate	346			296			296
Consumer	62			266			101
Leases	25			—			—
Total charge-offs	11,711			10,365			8,915
Recoveries:
Commercial	2,098			2,762			2,572
Real estate	28			79			45
Construction	397			—			—
Consumer	19			162			66
Leases	27			1,082			1,080
Total recoveries	2,569			4,085			3,763
Net charge-offs	9,142			6,280			5,152
Provision for loan losses	38,728			19,630			13,870
Ending balance	$	130,540		$	100,954		$	96,322
Reserve for off-balance sheet credit losses:
Beginning balance	$	7,060		$	4,690		$	4,690
Provision for off-balance sheet credit losses	522			2,370			1,630
Ending balance	$	7,582		$	7,060		$	6,320
Total reserve for credit losses	$	138,122		$	108,014		$	102,642
Total provision for credit losses	$	39,250		$	22,000		$	15,500
Reserve for loan losses to loans	0.82		%	0.71		%	0.72		%
Reserve for loan losses to loans excluding mortgage finance loans	1.13		%	0.99		%	0.99		%
Net charge-offs to average loans(1)	0.08		%	0.05		%	0.06		%
Net charge-offs to average loans excluding mortgage finance loans(1)	0.11		%	0.07		%	0.08		%
Total provision for credit losses to average loans	0.35		%	0.18		%	0.18		%
Total provision for credit losses to average loans excluding mortgage finance loans	0.49		%	0.24		%	0.23		%
Recoveries to total charge-offs	21.94		%	39.41		%	42.21		%
Reserve for off-balance sheet credit losses to off-balance sheet credit commitments	0.14		%	0.13		%	0.12		%
Combined reserves for credit losses to loans held for investment	0.87		%	0.76		%	0.76		%
Combined reserves for credit losses to loans held for investment excluding mortgage finance loans	1.19		%	1.06		%	1.06		%
Non-performing assets:
Non-accrual loans(4)	$	109,674		$	43,304		$	37,733
OREO(3)	187			568			617
Total	$	109,861		$	43,872		$	38,350
Restructured loans	$	249		$	1,806		$	1,853
Loans past due 90 days and still accruing(2)	7,558			5,274			6,102
Reserve for loan losses to non-accrual loans	1.2x			2.3x			2.6x

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(1) Interim period ratios are annualized.

(2) At September 30, 2015, December 31, 2014 and September 30, 2014, loans past due 90 days and still accruing include premium finance loans of $6.2 million, $3.7 million and $5.3 million, respectively. These loans are generally secured by obligations of insurance carriers to refund premiums on cancelled insurance policies. The refund of premiums from the insurance carriers can take 180 days or longer from the cancellation date.

(3) We did not have a valuation allowance recorded against the OREO balance at September 30, 2015, December 31, 2014 or September 30, 2014.

(4) As of September 30, 2015, December 31, 2014 and September 30, 2014, non-accrual loans included $26.1 million, $12.1 million and $13.9 million, respectively, in loans that met the criteria for restructured.

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 OREO (in thousands):

	September 30, 2015		December 31, 2014		September 30, 2014
Commercial	$	80,198	$	33,122	$	25,006
Construction	16,749		—		—
Real estate	7,028		9,947		12,717
Consumer	—		62		—
Leases	5,699		173		10
Total non-accrual loans	109,674		43,304		37,733
Repossessed assets:
OREO	187		568		617
Total non-performing assets	$	109,861	$	43,872	$	38,350

The table below summarizes the non-accrual loans as segregated by loan type and type of property securing the credit as of September 30, 2015 (in thousands):

Non-accrual loans:
Commercial
Lines of credit secured by the following:
Oil and gas properties	$	32,476
Assets of the borrowers	43,870
Inventory	2,130
Other	1,722
Total commercial	80,198
Construction
Unimproved land and/or undeveloped lots	16,749
Real estate
Secured by:
Commercial property	2,909
Unimproved land and/or undeveloped residential lots	3,591
Other	528
Total real estate	7,028
Leases (commercial leases primarily secured by assets of the lessor)	5,699
Total non-accrual loans	$	109,674

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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. 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.

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 September 30, 2015 and December 31, 2014, we had $44.7 million and $16.3 million, respectively, in loans of this type which were not included in either non-accrual or 90 days past due categories.

The following table summarizes the assets held in OREO at September 30, 2015 (in thousands):

Undeveloped land and residential lots	$	150
Other	37
Total OREO	$	187

When foreclosure occurs, fair value, which is generally based on appraised values, may result in partial charge-off of a loan upon taking the collateral, and so long as the collateral is retained, subsequent reductions in appraised values will result in valuation adjustments taken as non-interest expense. In addition, if the decline in value is believed to be permanent and not just driven by market conditions, a direct write-down to the OREO balance may be taken. We generally pursue sales of OREO when conditions warrant, but we may choose to hold certain properties for a longer term, which can result in additional exposure related to the appraised values during that holding period. We did not record a valuation expense during the three or nine months ended September 30, 2015 or September 30, 2014.

Loans Held for Sale

Through our MCA program, we commit to purchase residential mortgage loans from independent correspondent lenders with the intention to sell those loans to into the secondary market via whole loan sales to independent third parties or in securitization transactions to GSEs. We account for these transactions as sales and in some cases retain the right to service the loans. During the three months ended September 30, 2015, we purchased $4.2 million and sold $3.2 million of residential mortgage loans. The gain on sale recognized was not material.

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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, which are formulated and monitored by our senior management and our Balance Sheet Management Committee (“BSMC”), and which take into account the demonstrated marketability of assets, the sources and stability of 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, 2014 and for the nine months ended September 30, 2015 our principal source of funding has been our customer deposits, supplemented by our borrowings, primarily short-term Federal funds purchased and FHLB borrowings used to fund mortgage finance assets.

Deposit growth and increase in borrowing capacity related to our mortgage finance loans have resulted in an increase in liquidity assets to $2.3 billion at September 30, 2015. The following table summarizes the growth in and composition of liquidity assets (in thousands):

	September 30, 2015			December 31, 2014			September 30, 2014
Federal funds sold	$	25,000		$	—		$	—
Interest-bearing deposits	2,320,192			1,233,990			427,199
Total liquidity assets	$	2,345,192		$	1,233,990		$	427,199
Total liquidity assets as a percent of:
Total loans held for investment, excluding mortgage finance loans	20.3		%	12.2		%	4.4		%
Total loans held for investment	14.8		%	8.7		%	7.2		%
Total earning assets	12.9		%	8.0		%	3.1		%
Total deposits	15.5		%	9.7		%	3.6		%

Our liquidity needs for support of growth in loans held for investment have been fulfilled 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. 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 supplement temporary differences in the growth in loans, compared to customer deposits. The following table summarizes our period-end and average year-to-date core customer deposits and brokered deposits (in millions):

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	September 30, 2015			December 31, 2014			September 30, 2014
Deposits from core customers	$	13,554.2		$	10,900.0		$	9,893.2
Deposits from core customers as a percent of total deposits	89.4		%	86.0		%	84.4		%
Relationship brokered deposits	$	1,611.1		$	1,773.3		$	1,822.6
Relationship brokered deposits as a percent of total deposits	10.6		%	14.0		%	15.6		%
Traditional brokered deposits	$	—		$	—		$	—
Traditional brokered deposits as a percent of total deposits	—		%	—		%	—		%
Average deposits from core customers(1)	$	12,764.9		$	9,135.0		$	8,613.0
Average deposits from core customers as a percent of total quarterly average deposits(1)	88.7		%	84.1		%	83.3		%
Average relationship brokered deposits(1)	$	1,630.0		$	1,709.8		$	1,689.9
Average relationship brokered deposits as a percent of total quarterly average deposits(1)	11.3		%	15.7		%	16.4		%
Average traditional brokered deposits(1)	$	—		$	20.7		$	27.6
Average traditional brokered deposits as a percent of total quarterly average deposits(1)	—		%	0.2		%	0.3		%

(1) Annual averages presented for December 31, 2014.

We have access to sources of brokered deposits that we estimate to be $3.5 billion. Based on our internal guidelines, we may choose to limit our use of these sources to a lesser amount. Customer deposits (total deposits, including relationship brokered deposits, minus brokered CDs) at September 30, 2015 increased by $2.5 billion from December 31, 2014 and increased $3.4 billion from September 30, 2014.

Additionally, 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 typically 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 September 30, 2015 (in thousands):

Federal funds purchased	$	73,650
Repurchase agreements	30,184
FHLB borrowings	1,250,000
Total short-term borrowings	$	1,353,834
Maximum short-term borrowings outstanding at any month-end during the year	$	1,986,214

The following table summarizes our other borrowing capacities in excess of balances outstanding at September 30, 2015 (in thousands):

FHLB borrowing capacity relating to loans	$	3,720,831
FHLB borrowing capacity relating to securities	1,346
Total FHLB borrowing capacity	$	3,722,177
Unused Federal funds lines available from commercial banks	$	1,220,000

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The following table summarizes our long-term borrowings as of September 30, 2015 (in thousands):

Subordinated notes	$	286,000
Trust preferred subordinated debentures	113,406
Total long-term borrowings	$	399,406

At September 30, 2015, we had a revolving, non-amortizing line of credit with $100.0 million of unused capacity. This line of credit matures on December 22, 2015. 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. At September 30, 2015 and December 31, 2014, no borrowings were outstanding.

Our equity capital, including $150 million in preferred stock, averaged $1.5 billion for the nine months ended September 30, 2015, as compared to $1.2 billion for the same period in 2014. 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 September 30, 2015 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 September 30, 2015, 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	$	14,624,123	$	—	$	—	$	—	$	14,624,123
Time deposits	514,009		21,793		5,420		—		541,222
Federal funds purchased and customer repurchase agreements	103,834		—		—		—		103,834
FHLB borrowings	1,250,000		—		—		—		1,250,000
Operating lease obligations(1)	16,187		24,434		32,121		52,507		125,249
Subordinated notes	—		—		—		286,000		286,000
Trust preferred subordinated debentures	—		—		—		113,406		113,406
Total contractual obligations	$	16,508,153	$	46,227	$	37,541	$	451,913	$	17,043,834

(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 to the consolidated financial statements. Not all these significant accounting policies require management to make difficult, subjective or complex judgments. However, we believe the policy described below meets 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 ASC 310, Receivables, and ASC 450, Contingencies. The allowance for loan losses is established through a provision for loan 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 reserve, 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” and Note 4 – Loans 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 prices have continued to be suppressed through 2015. Such declines in commodity prices, if sustained or continued, could negatively impact our energy clients' ability to perform on their loan obligations, and we continue to monitor these loans. Management does not expect the current decline in petroleum and natural gas 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 +/- 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. Compliance with these guidelines is the ongoing responsibility of the BSMC, with exceptions reported to our board of directors 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 September 30, 2015, 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

September 30, 2015

(In thousands)

	0-3 mo Balance		4-12 mo Balance		1-3 yr Balance		3+ yr Balance			Total Balance
Assets:
Securities(1)	$	10,608	$	7,241	5,149		$	9,000		$	31,998
Total variable loans	13,855,415		81,340		33,848		8,451			13,979,054
Total fixed loans	374,398		1,006,467		351,689		222,036			1,954,590
Total loans(2)	14,229,813		1,087,807		385,537		230,487			15,933,644
Total interest sensitive assets	$	14,240,421	$	1,095,048	$	390,686	$	239,487		$	15,965,642
Liabilities:
Interest-bearing customer deposits	$	8,078,850	$	—	$	—	$	—		$	8,078,850
CDs & IRAs	218,162		295,847		21,793		5,420			541,222
Traditional brokered deposits	—		—		—		—			—
Total interest-bearing deposits	8,297,012		295,847		21,793		5,420			8,620,072
Repurchase agreements, Federal funds purchased, FHLB borrowings	1,353,834		—		—		—			1,353,834
Subordinated notes	—		—		—		286,000			286,000
Trust preferred subordinated debentures	—		—		—		113,406			113,406
Total borrowings	1,353,834		—		—		399,406			1,753,240
Total interest sensitive liabilities	$	9,650,846	$	295,847	$	21,793	$	404,826		$	10,373,312
Gap	$	4,589,575	$	799,201	$	368,893	$	(165,339	)	$	—
Cumulative Gap	4,589,575		5,388,776		5,757,669		5,592,330			5,592,330
Demand deposits										$	6,545,273
Stockholders’ equity										1,590,051
Total										$	8,135,324

(1) Securities based on fair market value.

(2) Loans are stated at gross.

The table above sets forth the balances as of September 30, 2015 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 the effects of 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.

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 2014 and the first nine months of 2015, 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.

46

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
	September 30, 2015				September 30, 2014
Change in net interest income	$	86,998	$	182,672	$	56,067	$	122,923

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

Except as set forth below, there have been no material changes in the risk factors previously disclosed in the Company’s 2014 Form 10-K for the fiscal year ended December 31, 2014. These additional risk factors relate to the MCA program launched in the third quarter of 2015.

Volatility in the mortgage industry can drive uncertainty related to the pricing of the mortgage loans we seek to purchase, as well as uncertainty in the pricing of those loans when they are sold or securitized. This volatility may cause the actual returns on those sales or securitization transactions to be less than anticipated, which could adversely affect our overall loan volumes. Additionally, non-bank competitors may have a pricing advantage as they are not subject to the same capital limitations on mortgage loans and MSRs as banks.

The persistent low interest rate environment and expectation of future higher rates has resulted in an increase in the value of MSRs, causing other market participants or competitors who are planning to hold MSRs for a longer term to be more aggressive in their pricing of the underlying loan purchases than a participant like us that does not plan to hold MSRs on a long-term basis.

In connection with our loans held for sale portfolio, we have entered into loan purchase commitments and forward sales commitments. While we believe that our hedging strategies will be successful in mitigating our exposure to interest rate risk, no hedging strategy can completely protect us. Poorly designed strategies, improperly executed transactions, or inaccurate assumptions could increase our risks and losses.

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ITEM 6. EXHIBITS

(a)	Exhibits
	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 June 30, 2015, 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: October 22, 2015

/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
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 June 30, 2015, 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

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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: October 22, 2015

/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: October 22, 2015

/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 September 30, 2015 (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: October 22, 2015

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 September 30, 2015 (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: October 22, 2015

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 6) $ in Thousands	Sep. 30, 2015 USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	$ 17,742
60-89 days past due	25,981
Greater Than 90 Days and Accruing	7,558	[1]
Total past due	51,281
Non-accrual	109,674
Current	15,771,627
Total	15,932,582
Premium finance loans past due 90 days and still accruing	6,200
Commercial | Business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	15,004
60-89 days past due	8,919
Greater Than 90 Days and Accruing	7,556	[1]
Total past due	31,479
Non-accrual	43,409
Current	5,452,730
Total	5,527,618
Commercial | Energy
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	0
60-89 days past due	0
Greater Than 90 Days and Accruing	2	[1]
Total past due	2
Non-accrual	36,789
Current	989,230
Total	1,026,021
Mortgage finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	0
60-89 days past due	0
Greater Than 90 Days and Accruing	0	[1]
Total past due	0
Non-accrual	0
Current	4,312,790
Total	4,312,790
Construction | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	0
60-89 days past due	0
Greater Than 90 Days and Accruing	0	[1]
Total past due	0
Non-accrual	16,749
Current	1,831,340
Total	1,848,089
Construction | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	928
60-89 days past due	0
Greater Than 90 Days and Accruing	0	[1]
Total past due	928
Non-accrual	0
Current	15,161
Total	16,089
Real estate | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	1,046
60-89 days past due	1,657
Greater Than 90 Days and Accruing	0	[1]
Total past due	2,703
Non-accrual	3,620
Current	2,366,647
Total	2,372,970
Real estate | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	414
60-89 days past due	0
Greater Than 90 Days and Accruing	0	[1]
Total past due	414
Non-accrual	499
Current	93,024
Total	93,937
Real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	0
60-89 days past due	15,405
Greater Than 90 Days and Accruing	0	[1]
Total past due	15,405
Non-accrual	2,909
Current	573,353
Total	591,667
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	350
60-89 days past due	0
Greater Than 90 Days and Accruing	0	[1]
Total past due	350
Non-accrual	0
Current	24,407
Total	24,757
Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	0
60-89 days past due	0
Greater Than 90 Days and Accruing	0	[1]
Total past due	0
Non-accrual	5,699
Current	112,945
Total	$ 118,644

[1] Loans past due 90 days and still accruing includes premium finance loans of $6.2 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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DERIVATIVE FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Asset Derivative	$ 46,927	$ 31,537
Liability Derivative	46,935	31,537
Offsetting derivative liability	0	(361)
Offsetting derivative asset	0	(361)
Derivative asset, net	46,927	31,176
Derivative liability, net	$ 46,935	31,176
Description of credit risk exposure on interest rate swaps and caps	Our credit exposure on interest rate swaps and caps is limited to the net favorable value and interest payments of all swaps and caps by each counterparty. In such cases collateral may be required from the counterparties involved if the net value of the swaps and caps exceeds a nominal amount considered to be immaterial
Credit exposure relating to interest rate swaps and caps	$ 46,900	31,200
Cash collateral pledge for derivatives	$ 47,300	$ 30,200
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	2.79%	2.79%
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	4.72%	4.82%
Commercial loan/lease interest rate caps
Derivatives, Fair Value [Line Items]
Weighted-average interest rate received and paid	2.19%	1.44%
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	$ 1,001,476	$ 866,432
Asset Derivative	0	361
Liability Derivative	45,558	30,162
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	217,731	63,414
Asset Derivative	1,366	1,014
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	1,001,476	866,432
Asset Derivative	45,558	30,162
Liability Derivative	0	361
Customer counterparties: | Commercial loan/lease interest rate caps | Non-hedging interest rate derivatives/swaps | Commercial loan/lease
Derivatives, Fair Value [Line Items]
Notional Amount	217,731	63,414
Asset Derivative	0	0
Liability Derivative	1,366	1,014
Loan purchase commitments | Interest rate derivative | Economic hedging interest rate derivatives
Derivatives, Fair Value [Line Items]
Notional Amount	2,085	0
Asset Derivative	3	0
Liability Derivative	0	0
Forward sale commitments | Interest rate derivative | Economic hedging interest rate derivatives
Derivatives, Fair Value [Line Items]
Notional Amount	2,967	0
Asset Derivative	0	0
Liability Derivative	$ 11	$ 0

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Loans and Leases Receivable, Net Reported Amount
Commercial	$ 6,553,639	$ 5,869,219
Mortgage finance	4,312,790	4,102,125
Construction	1,864,178	1,416,405
Real estate	3,058,574	2,807,127
Consumer	24,757	19,699
Leases	118,644	99,495
Gross loans held for investment	15,932,582	14,314,070	$ 13,516,746
Deferred income (net of direct origination costs)	(56,964)	(57,058)
Allowance for loan losses	(130,540)	(100,954)	$ (96,322)	$ (87,604)
Loans held for investment, net	15,745,078	14,156,058
Participating mortgage finance loans	$ 425,000	$ 358,300

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REGULATORY MATTERS (Tables)

9 Months Ended

Sep. 30, 2015

Regulatory Capital Requirements [Abstract]

Schedule of capital ratios

The table below summarizes our capital ratios:

	September 30, 2015		December 31, 2014
Company
Risk-based capital:
CET1(1)	7.69	%	7.89	%
Tier 1 capital	9.10	%	9.46	%
Total capital	11.39	%	11.83	%
Leverage	9.08	%	10.76	%

(1) December 31, 2014 ratio is unaudited.

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OREO AND VALUATION ALLOWANCE FOR LOSSES ON OREO (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2015		Sep. 30, 2014	Sep. 30, 2015		Sep. 30, 2014
Real Estate Acquired Through Foreclosure [Roll Forward]
Beginning balance	$ 609		$ 685	$ 568	[1],[2]	$ 5,110
Additions	0		0	1,177		851
Sales	(422)		(68)	(1,558)		(5,344)
Valuation allowance for OREO	0		0	0		0
Direct write-downs	0		0	0		0
Ending balance	$ 187	[1],[2]	$ 617	$ 187	[1],[2]	$ 617

[1] Fair value of loans held for investment and OREO is 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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LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 4) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Non-accrual loans earning on a cash basis	$ 884,000	$ 310,000

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FAIR VALUE DISCLOSURES (Financial Instruments) (Details) - USD ($) $ in Thousands		Sep. 30, 2015		Jun. 30, 2015	Dec. 31, 2014		Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
OREO		$ 187	[1],[2]	$ 609	$ 568	[1],[2]	$ 617	$ 685	$ 5,110
Securities, available-for-sale		31,998			41,719
Derivative assets		46,927			31,176
Derivative liabilities		46,935			31,176
Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		2,446,950			1,330,514
Securities, available-for-sale		31,998			41,719
Loans held for sale		1,062			0
Loans held for investment, net		15,745,078			14,156,058
Derivative assets		46,927			31,176
Deposits		15,165,345			12,673,300
Federal funds purchased		73,650			66,971
Customer repurchase agreements		30,184			25,705
Other borrowings		1,250,000			1,100,005
Subordinated notes		286,000			286,000
Trust preferred subordinated debentures		113,406			113,406
Derivative liabilities		46,935			31,176
Estimated fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		2,446,950			1,330,514
Securities, available-for-sale		31,998			41,719
Loans held for sale		1,062			0
Loans held for investment, net		15,753,869			14,161,484
Derivative assets		46,927			31,176
Deposits		15,165,846			12,673,607
Federal funds purchased		73,650			66,971
Customer repurchase agreements		30,184			25,705
Other borrowings		1,250,000			1,100,005
Subordinated notes		292,179			289,947
Trust preferred subordinated debentures		113,406			113,406
Derivative liabilities		46,935			31,176
Level 3 | Fair value measurements, nonrecurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of impaired loans		55,100			29,200
Allowance allocation of impaired loans		5,100			5,700
OREO	[1],[2]	187			568
Loans held for investment, net	[1],[3]	$ 50,000			$ 23,536

[1] Fair value of loans held for investment and OREO is 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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EARNINGS PER COMMON SHARE

9 Months Ended

Sep. 30, 2015

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   September 30,				Nine months ended   September 30,
	2015		2014		2015		2014
Numerator:
Net income	$	37,114	$	36,832	$	110,101	$	98,518
Preferred stock dividends	2,438		2,438		7,313		7,313
Net income available to common stockholders	34,676		34,394		$	102,788	91,205
Denominator:
Denominator for basic earnings per share— weighted average shares	45,827,902		43,143,580		45,792,470		42,842,143
Effect of employee stock-based awards(1)	216,499		284,859		216,448		333,690
Effect of warrants to purchase common stock	426,989		421,399		416,574		464,305
Denominator for dilutive earnings per share—adjusted weighted average shares and assumed conversions	46,471,390		43,849,838		46,425,492		43,640,138
Basic earnings per common share	$	0.76	$	0.80	$	2.24	$	2.13
Diluted earnings per common share	$	0.75	$	0.78	$	2.21	$	2.09

(1) Stock options, SARs and RSUs outstanding of 101,100 at September 30, 2015 and 50,500 at September 30, 2014 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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FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
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	$ 5,192,901	$ 5,324,460
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	$ 175,125	$ 177,808

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EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Numerator:
Net income		$ 37,114	$ 36,832	$ 110,101	$ 98,518
Preferred stock dividends		(2,438)	(2,438)	(7,313)	(7,313)
Net income available to common stockholders		$ 34,676	$ 34,394	$ 102,788	$ 91,205
Denominator:
Denominator for basic earnings per share— weighted average shares		45,827,902	43,143,580	45,792,470	42,842,143
Effect of employee stock-based awards	[1]	216,499	284,859	216,448	333,690
Effect of warrants to purchase common stock		426,989	421,399	416,574	464,305
Denominator for dilutive earnings per share—adjusted weighted average shares and assumed conversions		46,471,390	43,849,838	46,425,492	43,640,138
Basic earnings per common share (usd per share)		$ 0.76	$ 0.80	$ 2.24	$ 2.13
Diluted earnings per common share (usd per share)		$ 0.75	$ 0.78	$ 2.21	$ 2.09
Stock options, SARs and RSUs excluded from computation of diluted EPS				101,100	50,500

[1] Stock options, SARs and RSUs outstanding of 101,100 at September 30, 2015 and 50,500 at September 30, 2014 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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DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

9 Months Ended

Sep. 30, 2015

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 September 30, 2015 and December 31, 2014 are presented in the following tables (in thousands):

	September 30, 2015						December 31, 2014
	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	$	1,001,476	$	—	$	45,558	$	866,432	$	361		$	30,162
Commercial loan/lease interest rate caps	217,731		1,366		—		63,414		1,014			—
Customer counterparties:
Commercial loan/lease interest rate swaps	1,001,476		45,558		—		866,432		30,162			361
Commercial loan/lease interest rate caps	217,731		—		1,366		63,414		—			1,014
Economic hedging interest rate derivatives:
Loan purchase commitments	2,085		3		—		—		—			—
Forward sale commitments	2,967		—		11		—		—			—
Gross derivatives			46,927		46,935				31,537			31,537
Offsetting derivative assets/liabilities			—		—				(361		)	(361		)
Net derivatives included in the consolidated balance sheets			$	46,927	$	46,935			$	31,176		$	31,176

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

The weighted-average receive and pay interest rates for interest rate swaps outstanding at September 30, 2015 and December 31, 2014 were as follows:

	September 30, 2015 Weighted-Average Interest Rate				December 31, 2014 Weighted-Average Interest Rate
	Received		Paid		Received		Paid
Non-hedging interest rate swaps	2.79	%	4.72	%	2.79	%	4.82	%

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REGULATORY MATTERS (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Regulatory Capital Requirements [Abstract]
CET1	7.69%	7.89%
Tier 1 capital	9.10%	9.46%
Total capital	11.39%	11.83%
Leverage	9.08%	10.76%
Mortgage finance	$ 4,312,790	$ 4,102,125
Mortgage finance, average balance	$ 4,000,000

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SECURITIES (Details) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2015	Dec. 31, 2014
Available-for-sale Securities [Abstract]
Available-for-sale securities, net unrealized gains		$ 1,400	$ 2,000
Available for sale securities, net unrealized gain as percent of outstanding balances		4.47%	4.99%
Summary of Available-for-Sale Securities
Amortized Cost		$ 30,628	$ 39,736
Gross Unrealized Gains		1,582	2,134
Gross Unrealized Losses		(212)	(151)
Estimated Fair Value		31,998	41,719
Residential mortgage-backed securities
Summary of Available-for-Sale Securities
Amortized Cost	[1]	22,278	28,957
Gross Unrealized Gains		1,556	2,108
Gross Unrealized Losses		0	0
Estimated Fair Value	[1]	23,834	31,065
Municipals
Summary of Available-for-Sale Securities
Amortized Cost	[2]	828	3,257
Gross Unrealized Gains		3	10
Gross Unrealized Losses		0	0
Estimated Fair Value	[2]	831	3,267
Equity securities
Summary of Available-for-Sale Securities
Amortized Cost	[3],[4]	7,522	7,522
Gross Unrealized Gains	[3]	23	16
Gross Unrealized Losses	[3]	(212)	(151)
Estimated Fair Value	[3],[4]	$ 7,333	$ 7,387

[1] Actual maturities may differ from contractual maturities because borrowers may have the right to call or 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.

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

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SECURITIES (Details 1) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2015	Dec. 31, 2014
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Total		$ 30,628	$ 39,736
Estimated Fair Value		$ 31,998	$ 41,719
Available-for-sale Securities, Other Disclosure Items
Federal tax rate		35.00%	35.00%
Available-for-sale securities pledged as collateral		$ 22,500
Residential mortgage-backed securities
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Less Than One Year	[1]	64	$ 1
Amortized cost, After One Through Five Years	[1]	5,730	9,151
Amortized cost, After Five Through Ten Years	[1]	4,567	5,661
Amortized cost, After Ten Years	[1]	11,917	14,144
Amortized cost, Total	[1]	22,278	28,957
Estimated fair value, Less Than One Year	[1]	64	1
Estimated fair value, After One Through Five Years	[1]	5,972	9,662
Estimated fair value, After Five Through Ten Years	[1]	5,089	6,333
Estimated fair value, After Ten Years	[1]	12,709	15,069
Estimated Fair Value	[1]	$ 23,834	$ 31,065
Weighted average yield, Less Than One Year	[1],[2]	5.65%	6.50%
Weighted average yield, After One Through Five Years	[1],[2]	4.75%	4.79%
Weighted average yield, After Five Through Ten Years	[1],[2]	5.54%	5.54%
Weighted average yield, After Ten Years	[1],[2]	2.41%	2.36%
Weighted average yield, Total	[1],[2]	3.66%	3.75%
Municipals
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Less Than One Year	[3]	$ 265	$ 1,669
Amortized cost, After One Through Five Years	[3]	563	1,588
Amortized cost, After Five Through Ten Years	[3]	0	0
Amortized cost, After Ten Years	[3]	0	0
Amortized cost, Total	[3]	828	3,257
Estimated fair value, Less Than One Year	[3]	265	1,674
Estimated fair value, After One Through Five Years	[3]	566	1,593
Estimated fair value, After Five Through Ten Years	[3]	0	0
Estimated fair value, After Ten Years	[3]	0	0
Estimated Fair Value	[3]	$ 831	$ 3,267
Weighted average yield, Less Than One Year	[2],[3]	5.46%	5.78%
Weighted average yield, After One Through Five Years	[2],[3]	5.69%	5.79%
Weighted average yield, After Five Through Ten Years	[2],[3]	0.00%	0.00%
Weighted average yield, After Ten Years	[2],[3]	0.00%	0.00%
Weighted average yield, Total	[2],[3]	5.62%	5.79%
Equity securities
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Less Than One Year	[4]	$ 7,522	$ 7,522
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]	7,522	7,522
Estimated fair value, Less Than One Year	[4]	7,333	7,387
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]	7,333	$ 7,387
Deposits
Available-for-sale Securities, Other Disclosure Items
Available-for-sale securities pledged as collateral		7,200
Repurchase agreements
Available-for-sale Securities, Other Disclosure Items
Available-for-sale securities pledged as collateral		$ 15,300

[1] Actual maturities may differ from contractual maturities because borrowers may have the right to call or 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.

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OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

9 Months Ended

Sep. 30, 2015

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 clientele 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.

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, 2014, included in our Annual Report on Form 10-K filed with the SEC on February 19, 2015 (the “2014 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 in the near term.

Loans Held for Sale

Through our Mortgage Correspondent Aggregation ("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 government sponsored entities ("GSEs") such as Fannie Mae, Freddie Mac or Ginnie Mae. In some cases, we retain the mortgage servicing rights. 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 in accordance with ASC 825 "Financial Instruments". At the commitment date, we enter into a corresponding forward sale commitment with a third party, typically a GSE, to deliver the loans 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 mortgage servicing rights. Adjustments to reflect unrealized gains and losses resulting from changes in fair value and realized gains and losses upon ultimate sale of the loans are classified as non-interest income in the Consolidated Statements of Income and Other Comprehensive Income.

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SECURITIES (Details 2) - Equity securities - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Available-for-sale Securities, Continuous Unrealized Loss Position
Fair Value, Less Than 12 Months	$ 0	$ 0
Unrealized Loss, Less Than 12 Months	0	0
Fair Value, 12 Months or Longer	6,288	6,349
Unrealized Loss, 12 Months or Longer	(212)	(151)
Fair Value, Total	6,288	6,349
Unrealized Loss, Total	$ (212)	$ (151)

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 7) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Financing Receivable, Modifications [Line Items]
Loans considered restructured that are not already on non-accrual	$ 249		$ 1,800
Non-accrual loans that met the criteria for restructured unfunded commitments	$ 26,100		$ 12,100
Number of restructured loans	5	2
Pre-restructuring outstanding recorded investment	$ 20,459	$ 1,536
Post-restructuring outstanding recorded investment	$ 15,438	$ 1,525
Commercial
Financing Receivable, Modifications [Line Items]
Number of restructured loans	5	1
Pre-restructuring outstanding recorded investment	$ 20,459	$ 95
Post-restructuring outstanding recorded investment	$ 15,438	$ 95
Real estate
Financing Receivable, Modifications [Line Items]
Number of restructured loans		1
Pre-restructuring outstanding recorded investment		$ 1,441
Post-restructuring outstanding recorded investment		$ 1,430

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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets
Cash and due from banks	$ 101,758	$ 96,524
Interest-bearing deposits	2,320,192	1,233,990
Federal funds sold and securities purchased under resale agreements	25,000	0
Securities, available-for-sale	31,998	41,719
Loans held for sale, at fair value	1,062	0
Loans held for investment, mortgage finance	4,312,790	4,102,125
Loans held for investment (net of unearned income)	11,562,828	10,154,887
Less: Allowance for loan losses	130,540	100,954
Loans held for investment, net	15,745,078	14,156,058
Premises and equipment, net	17,772	17,368
Accrued interest receivable and other assets	403,040	333,699
Goodwill and intangible assets, net	20,095	20,588
Total assets	18,665,995	15,899,946
Non-interest-bearing
Non-interest-bearing	6,545,273	5,011,619
Interest-bearing	8,620,072	7,348,972
Interest-bearing in foreign branches	0	312,709
Total deposits	15,165,345	12,673,300
Accrued interest payable	2,694	4,747
Other liabilities	154,665	145,622
Federal funds purchased and repurchase agreements	103,834	92,676
Other borrowings	1,250,000	1,100,005
Subordinated notes	286,000	286,000
Trust preferred subordinated debentures	113,406	113,406
Total liabilities	17,075,944	14,415,756
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	458	457
Additional paid-in capital	713,209	709,738
Retained earnings	725,502	622,714
Treasury stock (shares at cost: 417 at September 30, 2015 and December 31, 2014)	(8)	(8)
Accumulated other comprehensive income, net of taxes	890	1,289
Total stockholders’ equity	1,590,051	1,484,190
Total liabilities and stockholders’ equity	$ 18,665,995	$ 15,899,946

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STOCK-BASED COMPENSATION (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	May. 19, 2015
Restricted stock units, additional disclosures
Compensation expense	$ 1,225	$ 1,100	$ 3,328	$ 3,628
Unrecognized compensation expense related to unvested awards	14,068		$ 14,068
Weighted average period over which expense is expected to be recognized, in years			3 years 4 months 24 days
SARs
Restricted stock units, additional disclosures
Compensation expense	85	128	$ 282	419
RSUs
Restricted stock units, additional disclosures
Compensation expense	1,140	972	3,046	3,209
Cash-based performance units	$ 1,420	$ 3,357	$ 5,958	$ 8,062
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
Number of additional shares that could be issued under the Plan					751,887

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Stockholders' Equity [Abstract]
Income tax benefit (expense) related to net unrealized gain on available-for-sale securities	$ 75	$ 103	$ 214	$ 145

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 2) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reserve for loan losses:
Beginning balance	$ 100,954	$ 87,604
Provision for loan losses	38,728	13,870
Charge-offs	11,711	8,915
Recoveries	2,569	3,763
Net charge-offs (recoveries)	9,142	5,152
Period end amount allocated to:
Loans individually evaluated for impairment			$ 9,559	$ 6,661
Loans collectively evaluated for impairment			120,981	89,661
Ending balance	100,954	87,604	130,540	96,322
Commercial
Reserve for loan losses:
Beginning balance	70,654	39,868
Provision for loan losses	48,689	20,900
Charge-offs	11,278	8,518
Recoveries	2,098	3,480
Net charge-offs (recoveries)	9,180	5,038
Period end amount allocated to:
Loans individually evaluated for impairment			9,304	5,999
Loans collectively evaluated for impairment			100,859	49,731
Ending balance	70,654	39,868	110,163	55,730
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	7,935	14,553
Provision for loan losses	(3,944)	(1,611)
Charge-offs	0	0
Recoveries	397	0
Net charge-offs (recoveries)	(397)	0
Period end amount allocated to:
Loans individually evaluated for impairment			0	0
Loans collectively evaluated for impairment			4,388	12,942
Ending balance	7,935	14,553	4,388	12,942
Real Estate
Reserve for loan losses:
Beginning balance	15,582	24,210
Provision for loan losses	(4,328)	(6,095)
Charge-offs	346	296
Recoveries	28	45
Net charge-offs (recoveries)	318	251
Period end amount allocated to:
Loans individually evaluated for impairment			254	660
Loans collectively evaluated for impairment			10,682	17,204
Ending balance	15,582	24,210	10,936	17,864
Consumer
Reserve for loan losses:
Beginning balance	240	149
Provision for loan losses	154	112
Charge-offs	62	101
Recoveries	19	66
Net charge-offs (recoveries)	43	35
Period end amount allocated to:
Loans individually evaluated for impairment			0	0
Loans collectively evaluated for impairment			351	226
Ending balance	240	149	351	226
Leases
Reserve for loan losses:
Beginning balance	1,141	3,105
Provision for loan losses	(221)	(1,480)
Charge-offs	25	0
Recoveries	27	172
Net charge-offs (recoveries)	(2)	(172)
Period end amount allocated to:
Loans individually evaluated for impairment			1	2
Loans collectively evaluated for impairment			921	1,795
Ending balance	1,141	3,105	922	1,797
Unallocated
Reserve for loan losses:
Beginning balance	5,402	5,719
Provision for loan losses	(1,622)	2,044
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			3,780	7,763
Ending balance	$ 5,402	$ 5,719	$ 3,780	$ 7,763

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Tables)

9 Months Ended

Sep. 30, 2015

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

Schedule of loans held for investments

At September 30, 2015 and December 31, 2014, loans held for investment were as follows (in thousands):

	September 30, 2015			December 31, 2014
Commercial	$	6,553,639		$	5,869,219
Mortgage finance	4,312,790			4,102,125
Construction	1,864,178			1,416,405
Real estate	3,058,574			2,807,127
Consumer	24,757			19,699
Leases	118,644			99,495
Gross loans held for investment	15,932,582			14,314,070
Deferred income (net of direct origination costs)	(56,964		)	(57,058		)
Allowance for loan losses	(130,540		)	(100,954		)
Total loans held for investment	$	15,745,078		$	14,156,058

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 September 30, 2015 and December 31, 2014 (in thousands):

September 30, 2015
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Grade:
Pass	$	6,244,334	$	4,312,790	$	1,845,094	$	3,014,205	$	24,497	$	110,295	$	15,551,215
Special mention	113,542		—		1,771		23,076		26		2,650		141,065
Substandard-accruing	115,565		—		564		14,265		234		—		130,628
Non-accrual	80,198		—		16,749		7,028		—		5,699		109,674
Total loans held for investment	$	6,553,639	$	4,312,790	$	1,864,178	$	3,058,574	$	24,757	$	118,644	$	15,932,582
December 31, 2014
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Grade:
Pass	$	5,738,474	$	4,102,125	$	1,414,671	$	2,785,804	$	19,579	$	91,044	$	14,151,697
Special mention	53,839		—		1,734		8,723		11		4,363		68,670
Substandard-accruing	43,784		—		—		2,653		47		3,915		50,399
Non-accrual	33,122		—		—		9,947		62		173		43,304
Total loans held for investment	$	5,869,219	$	4,102,125	$	1,416,405	$	2,807,127	$	19,699	$	99,495	$	14,314,070

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

The following table details activity in the reserve for loan losses by portfolio segment for the nine months ended September 30, 2015 and September 30, 2014. Allocation of a portion of the reserve to one category of loans does not preclude its availability to absorb losses in other categories.

September 30, 2015
(in thousands)	Commercial		Mortgage Finance		Construction			Real Estate			Consumer		Leases			Unallocated			Total
Beginning balance	$	70,654	$	—	$	7,935		$	15,582		$	240	$	1,141		$	5,402		$	100,954
Provision for loan losses	48,689		—		(3,944		)	(4,328		)	154		(221		)	(1,622		)	38,728
Charge-offs	11,278		—		—			346			62		25			—			11,711
Recoveries	2,098		—		397			28			19		27			—			2,569
Net charge-offs (recoveries)	9,180		—		(397		)	318			43		(2		)	—			9,142
Ending balance	$	110,163	$	—	$	4,388		$	10,936		$	351	$	922		$	3,780		$	130,540
Period end amount allocated to:
Loans individually evaluated for impairment	$	9,304	$	—	$	—		$	254		$	—	$	1		$	—		$	9,559
Loans collectively evaluated for impairment	100,859		—		4,388			10,682			351		921			3,780			120,981
Ending balance	$	110,163	$	—	$	4,388		$	10,936		$	351	$	922		$	3,780		$	130,540
September 30, 2014
(in thousands)	Commercial		Mortgage Finance		Construction			Real Estate			Consumer		Leases			Unallocated			Total
Beginning balance	$	39,868	$	—	$	14,553		$	24,210		$	149	$	3,105		$	5,719		$	87,604
Provision for loan losses	20,900		—		(1,611		)	(6,095		)	112		(1,480		)	2,044			13,870
Charge-offs	8,518		—		—			296			101		—			—			8,915
Recoveries	3,480		—		—			45			66		172			—			3,763
Net charge-offs (recoveries)	5,038		—		—			251			35		(172		)	—			5,152
Ending balance	$	55,730	$	—	$	12,942		$	17,864		$	226	$	1,797		$	7,763		$	96,322
Period end amount allocated to:
Loans individually evaluated for impairment	$	5,999	$	—	$	—		$	660		$	—	$	2		$	—		$	6,661
Loans collectively evaluated for impairment	49,731		—		12,942			17,204			226		1,795			7,763			89,661
Ending balance	$	55,730	$	—	$	12,942		$	17,864		$	226	$	1,797		$	7,763		$	96,322

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

Our recorded investment in loans as of September 30, 2015, December 31, 2014 and September 30, 2014 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):

September 30, 2015
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	82,050	$	—	$	16,749	$	9,895	$	—	$	5,699	$	114,393
Loans collectively evaluated for impairment	6,471,589		4,312,790		1,847,429		3,048,679		24,757		112,945		15,818,189
Total	$	6,553,639	$	4,312,790	$	1,864,178	$	3,058,574	$	24,757	$	118,644	$	15,932,582
December 31, 2014
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	35,165	$	—	$	—	$	13,880	$	62	$	173	$	49,280
Loans collectively evaluated for impairment	5,834,054		4,102,125		1,416,405		2,793,247		19,637		99,322		14,264,790
Total	$	5,869,219	$	4,102,125	$	1,416,405	$	2,807,127	$	19,699	$	99,495	$	14,314,070
September 30, 2014
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	27,109	$	—	$	—	$	17,904	$	—	$	10	$	45,023
Loans collectively evaluated for impairment	5,594,227		3,774,467		1,640,596		2,344,614		16,502		101,317		13,471,723
Total	$	5,621,336	$	3,774,467	$	1,640,596	$	2,362,518	$	16,502	$	101,327	$	13,516,746

Schedule of impaired loans, by portfolio class

The following tables detail our impaired loans, by portfolio class, as of September 30, 2015 and December 31, 2014 (in thousands):

September 30, 2015
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial
Business loans	$	16,370	$	24,185	$	—	$	18,211	$	—
Energy	35,304		35,304		—		16,991		28
Construction
Market risk	16,749		16,749		—		7,444		—
Real estate
Market risk	3,591		3,591		—		3,671		—
Commercial	2,909		2,909		—		3,467		16
Secured by 1-4 family	—		—		—		—		—
Consumer	—		—		—		—		—
Leases	5,695		5,695		—		2,777		—
Total impaired loans with no allowance recorded	$	80,618	$	88,433	$	—	$	52,561	$	44
With an allowance recorded:
Commercial
Business loans	$	28,890	$	28,890	$	8,607	$	32,756	$	—
Energy	1,486		1,486		697		699		—
Construction
Market risk	—		—		—		—		—
Real estate
Market risk	1,785		1,785		29		2,421		—
Commercial	—		—		—		408		—
Secured by 1-4 family	1,610		1,610		225		1,710		—
Consumer	—		—		—		14		—
Leases	4		4		1		98		—
Total impaired loans with an allowance recorded	$	33,775	$	33,775	$	9,559	$	38,106	$	—
Combined:
Commercial
Business loans	$	45,260	$	53,075	$	8,607	$	50,967	$	—
Energy	36,790		36,790		697		17,690		28
Construction
Market risk	16,749		16,749		—		7,444		—
Real estate
Market risk	5,376		5,376		29		6,092		—
Commercial	2,909		2,909		—		3,875		16
Secured by 1-4 family	1,610		1,610		225		1,710		—
Consumer	—		—		—		14		—
Leases	5,699		5,699		1		2,875		—
Total impaired loans	$	114,393	$	122,208	$	9,559	$	90,667	$	44

December 31, 2014
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial
Business loans	$	9,608	$	11,857	$	—	$	7,334	$	—
Energy	—		—		—		375		25
Construction
Market risk	—		—		—		118		—
Real estate
Market risk	3,735		3,735		—		7,970		—
Commercial	3,521		3,521		—		2,795		—
Secured by 1-4 family	—		—		—		1,210		—
Consumer	—		—		—		—		—
Leases	—		—		—		—		—
Total impaired loans with no allowance recorded	$	16,864	$	19,113	$	—	$	19,802	$	25
With an allowance recorded:
Commercial
Business loans	$	24,553	$	25,553	$	7,433	$	17,705	$	—
Energy	1,004		1,004		272		991		—
Construction
Market risk	—		—		—		—		—
Real estate
Market risk	4,203		4,203		317		5,064		—
Commercial	526		526		79		705		—
Secured by 1-4 family	1,895		1,895		240		2,119		—
Consumer	62		62		9		16		—
Leases	173		173		26		41		—
Total impaired loans with an allowance recorded	$	32,416	$	33,416	$	8,376	$	26,641	$	—
Combined:
Commercial
Business loans	$	34,161	$	37,410	$	7,433	$	25,039	$	—
Energy	1,004		1,004		272		1,366		25
Construction
Market risk	—		—		—		118		—
Real estate
Market risk	7,938		7,938		317		13,034		—
Commercial	4,047		4,047		79		3,500		—
Secured by 1-4 family	1,895		1,895		240		3,329		—
Consumer	62		62		9		16		—
Leases	173		173		26		41		—
Total impaired loans	$	49,280	$	52,529	$	8,376	$	46,443	$	25

Schedule of an age analysis of accruing past due loans

The table below provides an age analysis of our past due loans that are still accruing and non-accrual loans, by portfolio class, as of September 30, 2015 (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	$	15,004	$	8,919	$	7,556	$	31,479	$	43,409	$	5,452,730	$	5,527,618
Energy	—		—		2		2		36,789		989,230		1,026,021
Mortgage finance loans	—		—		—		—		—		4,312,790		4,312,790
Construction
Market risk	—		—		—		—		16,749		1,831,340		1,848,089
Secured by 1-4 family	928		—		—		928		—		15,161		16,089
Real estate
Market risk	1,046		1,657		—		2,703		3,620		2,366,647		2,372,970
Commercial	—		15,405		—		15,405		2,909		573,353		591,667
Secured by 1-4 family	414		—		—		414		499		93,024		93,937
Consumer	350		—		—		350		—		24,407		24,757
Leases	—		—		—		—		5,699		112,945		118,644
Total loans held for investment	$	17,742	$	25,981	$	7,558	$	51,281	$	109,674	$	15,771,627	$	15,932,582

(1) Loans past due 90 days and still accruing includes premium finance loans of $6.2 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 provides information on how restructured loans were modified during the nine months ended September 30, 2015 and 2014 (in thousands):

	Nine months ended September 30,
	2015		2014
Extended maturity	$	—	$	1,430
Combination of maturity extension and payment schedule adjustment	15,438		95
Total	$	15,438	$	1,525

The following tables summarize, for the nine months ended September 30, 2015 and 2014, loans that were restructured during 2015 and 2014 (in thousands):

September 30, 2015
	Number of Restructured Loans	Pre-Restructuring Outstanding Recorded Investment		Post-Restructuring Outstanding Recorded Investment
Commercial business loans	5	$	20,459	$	15,438
Total new restructured loans in 2015	5	$	20,459	$	15,438
September 30, 2014
	Number of Restructured Loans	Pre-Restructuring Outstanding Recorded Investment		Post-Restructuring Outstanding Recorded Investment
Real estate—commercial	1	$	1,441	$	1,430
Commercial business loans	1	$	95	$	95
Total new restructured loans in 2014	2	$	1,536	$	1,525

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 3) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	$ 114,393	$ 49,280	$ 45,023
Loans collectively evaluated for impairment	15,818,189	14,264,790	13,471,723
Gross loans held for investment	15,932,582	14,314,070	13,516,746
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	82,050	35,165	27,109
Loans collectively evaluated for impairment	6,471,589	5,834,054	5,594,227
Gross loans held for investment	6,553,639	5,869,219	5,621,336
Mortgage finance loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	0	0	0
Loans collectively evaluated for impairment	4,312,790	4,102,125	3,774,467
Gross loans held for investment	4,312,790	4,102,125	3,774,467
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	16,749	0	0
Loans collectively evaluated for impairment	1,847,429	1,416,405	1,640,596
Gross loans held for investment	1,864,178	1,416,405	1,640,596
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	9,895	13,880	17,904
Loans collectively evaluated for impairment	3,048,679	2,793,247	2,344,614
Gross loans held for investment	3,058,574	2,807,127	2,362,518
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	0	62	0
Loans collectively evaluated for impairment	24,757	19,637	16,502
Gross loans held for investment	24,757	19,699	16,502
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	5,699	173	10
Loans collectively evaluated for impairment	112,945	99,322	101,317
Gross loans held for investment	$ 118,644	$ 99,495	$ 101,327

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FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK (Tables)

9 Months Ended

Sep. 30, 2015

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):

	September 30, 2015		December 31, 2014
Commitments to extend credit	$	5,192,901	$	5,324,460
Standby letters of credit	175,125		177,808

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating activities
Income from continuing operations	$ 110,101	$ 98,518
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	39,250	15,500
Depreciation and amortization	12,230	10,583
Bank owned life insurance (BOLI) income	(1,444)	(1,547)
Stock-based compensation expense	(9,286)	(11,690)
Excess tax expense from stock-based compensation arrangements	(1,134)	(2,534)
Net increase in loans held for sale, including proceeds from sales and repayments	(1,062)	0
(Gain) loss on sale of assets	134	(821)
Changes in operating assets and liabilities:
Accrued interest receivable and other assets	(77,873)	(13,762)
Accrued interest payable and other liabilities	2,339	(1,166)
Net cash provided by operating activities	91,827	116,461
Investing activities
Maturities and calls of available-for-sale securities	2,430	11,150
Principal payments received on available-for-sale securities	6,677	7,712
Originations of mortgage finance loans	(66,786,322)	(40,244,845)
Proceeds from pay-offs of mortgage finance loans	66,575,657	39,254,648
Net increase in loans held for investment, excluding mortgage finance loans	(1,417,605)	(1,206,606)
Purchase (disposal) of premises and equipment, net	(3,729)	(9,110)
Proceeds from sale of foreclosed assets	1,430	5,823
Net cash used in investing activities	(1,621,462)	(2,181,228)
Financing activities
Net increase in deposits	2,492,045	2,458,429
Net expense from issuance of stock related to stock-based awards	(948)	(2,074)
Net proceeds from issuance of common stock	0	106,548
Preferred dividends paid	(7,313)	(7,313)
Net increase (decrease) in other borrowings	149,995	(397,462)
Excess tax benefits from stock-based compensation arrangements	1,134	2,534
Net increase in Federal funds purchased and repurchase agreements	11,158	107,521
Net proceeds from issuance of subordinated notes	0	172,375
Net cash provided by financing activities	2,646,071	2,440,558
Net increase in cash and cash equivalents	1,116,436	375,791
Cash and cash equivalents at beginning of period	1,330,514	153,911
Cash and cash equivalents at end of period	2,446,950	529,702
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	35,849	26,172
Cash paid during the period for income taxes	70,208	51,722
Transfers from loans/leases to OREO and other repossessed assets	$ 1,177	$ 851

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CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Sep. 30, 2015	Dec. 31, 2014
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	45,839,781	45,735,424
Treasury Stock, shares	417	417

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DERIVATIVE FINANCIAL INSTRUMENTS

9 Months Ended

Sep. 30, 2015

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 three months ended September 30, 2015 and 2014, we entered into certain interest rate derivative positions that are 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.

The notional amounts and estimated fair values of interest rate derivative positions outstanding at September 30, 2015 and December 31, 2014 are presented in the following tables (in thousands):

	September 30, 2015						December 31, 2014
	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	$	1,001,476	$	—	$	45,558	$	866,432	$	361		$	30,162
Commercial loan/lease interest rate caps	217,731		1,366		—		63,414		1,014			—
Customer counterparties:
Commercial loan/lease interest rate swaps	1,001,476		45,558		—		866,432		30,162			361
Commercial loan/lease interest rate caps	217,731		—		1,366		63,414		—			1,014
Economic hedging interest rate derivatives:
Loan purchase commitments	2,085		3		—		—		—			—
Forward sale commitments	2,967		—		11		—		—			—
Gross derivatives			46,927		46,935				31,537			31,537
Offsetting derivative assets/liabilities			—		—				(361		)	(361		)
Net derivatives included in the consolidated balance sheets			$	46,927	$	46,935			$	31,176		$	31,176

The weighted-average receive and pay interest rates for interest rate swaps outstanding at September 30, 2015 and December 31, 2014 were as follows:

	September 30, 2015 Weighted-Average Interest Rate				December 31, 2014 Weighted-Average Interest Rate
	Received		Paid		Received		Paid
Non-hedging interest rate swaps	2.79	%	4.72	%	2.79	%	4.82	%

The weighted-average strike rate for outstanding interest rate caps was 2.19% at September 30, 2015 and 1.44% at December 31, 2014.

Our credit exposure on interest rate swaps and caps is limited to the net favorable value and interest payments of all swaps and caps by each counterparty. In such cases collateral may be required from the counterparties involved if the net value of the swaps and caps exceeds a nominal amount considered to be immaterial. Our credit exposure, net of any collateral pledged, relating to interest rate swaps and caps was approximately $46.9 million at September 30, 2015 and approximately $31.2 million at December 31, 2014, all of which relates to bank customers. Collateral levels are monitored and adjusted on a regular basis for changes in interest rate swap and cap values. At September 30, 2015 and December 31, 2014, we had $47.3 million and $30.2 million, respectively, in cash collateral pledged for these derivatives included in interest-bearing deposits.

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Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 21, 2015
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	Sep. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		45,844,361

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NEW ACCOUNTING PRONOUNCEMENTS

9 Months Ended

Sep. 30, 2015

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

NEW ACCOUNTING PRONOUNCEMENTS

NEW ACCOUNTING PRONOUNCEMENTS

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 is effective for annual and interim periods beginning after December 15, 2017 and is not expected to have a significant impact on our consolidated financial statements.

ASU 2014-12 "Compensation - Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period" ("ASU 2014-12") requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. ASU 2014-12 is intended to resolve the diverse accounting treatments of these types of awards in practice and is effective for annual and interim periods beginning after December 15, 2015. It is not expected to have a significant impact on our consolidated financial statements.

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CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest income
Interest and fees on loans	$ 151,749	$ 134,618	$ 442,529	$ 374,724
Securities	298	428	979	1,439
Federal funds sold and securities purchased under resale agreements	193	68	427	116
Deposits in other banks	1,616	176	4,203	435
Total interest income	153,856	135,290	448,138	376,714
Interest expense
Deposits	6,240	4,606	17,510	12,882
Federal funds purchased	56	82	217	292
Repurchase agreements	6	5	14	13
Other borrowings	672	68	1,590	321
Subordinated notes	4,191	4,241	12,573	11,961
Trust preferred subordinated debentures	643	627	1,892	1,862
Total interest expense	11,808	9,629	33,796	27,331
Net interest income	142,048	125,661	414,342	349,383
Provision for credit losses	13,750	6,500	39,250	15,500
Net interest income after provision for credit losses	128,298	119,161	375,092	333,883
Non-interest income
Service charges on deposit accounts	2,096	1,817	6,339	5,277
Trust fee income	1,222	1,190	3,709	3,714
Bank owned life insurance (BOLI) income	484	517	1,444	1,547
Brokered loan fees	4,885	3,821	14,394	10,002
Swap fees	254	464	3,275	2,098
Other	2,439	2,587	7,257	8,647
Total non-interest income	11,380	10,396	36,418	31,285
Non-interest expense
Salaries and employee benefits	48,583	43,189	142,611	125,141
Net occupancy expense	5,874	5,279	17,373	15,120
Marketing	3,999	4,024	12,142	11,578
Legal and professional	5,510	4,874	15,176	17,457
Communications and technology	5,180	4,928	15,905	13,213
FDIC insurance assessment	4,489	2,775	12,490	8,044
Allowance and other carrying costs for OREO	1	5	16	61
Other	8,052	6,841	23,768	20,383
Total non-interest expense	81,688	71,915	239,481	210,997
Income before income taxes	57,990	57,642	172,029	154,171
Income tax expense	20,876	20,810	61,928	55,653
Net income	37,114	36,832	110,101	98,518
Preferred stock dividends	2,438	2,438	7,313	7,313
Net income available to common stockholders	34,676	34,394	102,788	91,205
Other comprehensive income (loss)
Change in net unrealized gain on available-for-sale securities arising during period, before-tax	(216)	(295)	(613)	(414)
Income tax benefit related to net unrealized gain on available-for-sale securities	(75)	(103)	(214)	(145)
Other comprehensive loss, net of tax	(141)	(192)	(399)	(269)
Comprehensive income	$ 36,973	$ 36,640	$ 109,702	$ 98,249
Basic earnings per common share (usd per share)	$ 0.76	$ 0.80	$ 2.24	$ 2.13
Diluted earnings per common share (usd per share)	$ 0.75	$ 0.78	$ 2.21	$ 2.09

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OREO AND VALUATION ALLOWANCE FOR LOSSES ON OREO

9 Months Ended

Sep. 30, 2015

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 September 30,						Nine months ended September 30,
	2015			2014			2015			2014
Beginning balance	$	609		$	685		$	568		$	5,110
Additions	—			—			1,177			851
Sales	(422		)	(68		)	(1,558		)	(5,344		)
Valuation allowance for OREO	—			—			—			—
Direct write-downs	—			—			—			—
Ending balance	$	187		$	617		$	187		$	617

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LOANS AND ALLOWANCE FOR LOAN LOSSES

9 Months Ended

Sep. 30, 2015

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 September 30, 2015 and December 31, 2014, loans held for investment were as follows (in thousands):

	September 30, 2015			December 31, 2014
Commercial	$	6,553,639		$	5,869,219
Mortgage finance	4,312,790			4,102,125
Construction	1,864,178			1,416,405
Real estate	3,058,574			2,807,127
Consumer	24,757			19,699
Leases	118,644			99,495
Gross loans held for investment	15,932,582			14,314,070
Deferred income (net of direct origination costs)	(56,964		)	(57,058		)
Allowance for loan losses	(130,540		)	(100,954		)
Total loans held for investment	$	15,745,078		$	14,156,058

Commercial Loans and Leases. Our commercial loan and lease 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 transactional 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 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 interests are typically 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 September 30, 2015 and December 31, 2014 are stated net of $425.0 million and $358.3 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, the impact of the inability of potential purchasers and lessees to obtain financing and a lack of transactions at comparable values.

At September 30, 2015 and December 31, 2014, 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.

Portfolio Geographic Concentration

As of September 30, 2015, a substantial 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. Additionally, we may make loans to these businesses and individuals secured by assets located outside of Texas. The risks created by this concentration have been considered by management in the determination of the appropriateness of the allowance for loan losses. Management believes the allowance for loan losses is appropriate to cover probable losses inherent in the loan portfolio at each balance sheet date.

Summary of Loan Loss Experience

The reserve for loan losses is comprised of specific reserves for impaired loans and an estimate of losses inherent in the portfolio at the balance sheet date, but not yet identified with specified loans. We regularly evaluate our reserve for loan losses to maintain an appropriate level to absorb estimated loan losses inherent in the loan portfolio. Factors contributing to the determination of reserves include the credit-worthiness of the borrower, changes in the value of pledged collateral and general economic conditions. All loan commitments rated substandard or worse and greater than $500,000 are specifically reviewed for loss potential. For loans deemed to be impaired, a specific allocation is assigned based on the losses expected to be realized from those loans. For purposes of determining the general reserve, the portfolio is segregated by product types to recognize differing risk profiles among categories, and then further segregated by credit grades. Credit grades are assigned to all loans. Each credit grade is assigned a risk factor, or reserve allocation percentage. These risk factors are multiplied by the outstanding principal balance and risk-weighted by product type to calculate the required reserve. A similar process is employed to calculate a reserve assigned to off-balance sheet commitments, specifically unfunded loan commitments and letters of credit, and any needed reserve is recorded in other liabilities. Even though portions of the allowance may be allocated to specific loans, the entire allowance is available for any credit that, in management’s judgment, should be charged off.

We have several pass credit grades that are assigned to loans based on varying levels of risk, ranging from credits that are secured by cash or marketable securities, to watch credits which have all the characteristics of an acceptable credit risk but warrant more than the normal level of monitoring. Within our criticized/classified credit grades are special mention, substandard and doubtful. Special mention loans are those that are currently protected by the current sound worth and paying capacity of the borrower, but that are potentially weak and constitute an additional credit risk. The loan has the potential to deteriorate to a substandard grade due to the existence of financial or administrative deficiencies. Substandard loans have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that we will sustain some loss if the deficiencies are not corrected. Some substandard loans are insufficiently protected by the current sound worth and paying capacity of the borrower and of the collateral pledged and may be considered impaired. Substandard loans can be accruing or can be on non-accrual depending on the circumstances of the individual loans. Loans classified as doubtful have all the weaknesses inherent in substandard loans with the added characteristics that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The possibility of loss is extremely high. All doubtful loans are on non-accrual.

The reserve allocation percentages assigned to each credit grade have been developed based primarily on an analysis of our historical loss rates. The allocations are adjusted for certain qualitative factors for such things as general economic conditions and changes in credit policies and lending standards. Changes in the trend and severity of problem loans can cause the estimation of losses to differ from past experience. In addition, the reserve reflects the results of reviews performed by the Company's independent Credit Review function as reflected in their confirmations of assigned credit grades within the portfolio. The Credit Review function reports to the Credit Risk Committee of the Company's board of directors with administrative oversight from the Company's Chief Risk Officer. The portion of the allowance that is not derived by the allowance allocation percentages compensates 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. Examples of risks that support the Company's maintaining an unallocated reserve include the possibility of precipitous negative changes in economic conditions and borrowers' submission of financial statements or certifications of collateral value that subsequently prove to be materially inaccurate for reason of either misstatement or omission of critical information. These situations, while not common, do not necessarily correlate well with the general risk profile presented by assigned credit grade and product type categories. We evaluate many factors and conditions in determining the unallocated portion of the allowance, including amount and frequency of losses attributable to issues not specifically addressed or included in the determination and application of the allowance allocation percentages. We consider the allowance to be appropriate, given management’s assessment of probable losses within the portfolio as of the evaluation date, the significant growth in the loan and lease portfolio, current economic conditions in the Company’s market areas and other factors.

The methodology used in the periodic review of reserve appropriateness, which is performed at least quarterly, is designed to be dynamic and responsive to changes in portfolio credit quality. The changes are reflected in the general reserve and in specific reserves as the collectability of larger classified loans is evaluated with new information. As our portfolio has matured, historical loss ratios have been closely monitored, and our reserve appropriateness relies primarily on our loss history. The review of reserve appropriateness is performed by executive management and presented to a committee of our board of directors for their review. The committee reports to the board as part of the board’s review on a quarterly basis of the Company’s consolidated financial statements.

The following tables summarize the credit risk profile of our loan portfolio by internally assigned grades and non-accrual status as of September 30, 2015 and December 31, 2014 (in thousands):

September 30, 2015
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Grade:
Pass	$	6,244,334	$	4,312,790	$	1,845,094	$	3,014,205	$	24,497	$	110,295	$	15,551,215
Special mention	113,542		—		1,771		23,076		26		2,650		141,065
Substandard-accruing	115,565		—		564		14,265		234		—		130,628
Non-accrual	80,198		—		16,749		7,028		—		5,699		109,674
Total loans held for investment	$	6,553,639	$	4,312,790	$	1,864,178	$	3,058,574	$	24,757	$	118,644	$	15,932,582
December 31, 2014
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Grade:
Pass	$	5,738,474	$	4,102,125	$	1,414,671	$	2,785,804	$	19,579	$	91,044	$	14,151,697
Special mention	53,839		—		1,734		8,723		11		4,363		68,670
Substandard-accruing	43,784		—		—		2,653		47		3,915		50,399
Non-accrual	33,122		—		—		9,947		62		173		43,304
Total loans held for investment	$	5,869,219	$	4,102,125	$	1,416,405	$	2,807,127	$	19,699	$	99,495	$	14,314,070

The following table details activity in the reserve for loan losses by portfolio segment for the nine months ended September 30, 2015 and September 30, 2014. Allocation of a portion of the reserve to one category of loans does not preclude its availability to absorb losses in other categories.

September 30, 2015
(in thousands)	Commercial		Mortgage Finance		Construction			Real Estate			Consumer		Leases			Unallocated			Total
Beginning balance	$	70,654	$	—	$	7,935		$	15,582		$	240	$	1,141		$	5,402		$	100,954
Provision for loan losses	48,689		—		(3,944		)	(4,328		)	154		(221		)	(1,622		)	38,728
Charge-offs	11,278		—		—			346			62		25			—			11,711
Recoveries	2,098		—		397			28			19		27			—			2,569
Net charge-offs (recoveries)	9,180		—		(397		)	318			43		(2		)	—			9,142
Ending balance	$	110,163	$	—	$	4,388		$	10,936		$	351	$	922		$	3,780		$	130,540
Period end amount allocated to:
Loans individually evaluated for impairment	$	9,304	$	—	$	—		$	254		$	—	$	1		$	—		$	9,559
Loans collectively evaluated for impairment	100,859		—		4,388			10,682			351		921			3,780			120,981
Ending balance	$	110,163	$	—	$	4,388		$	10,936		$	351	$	922		$	3,780		$	130,540
September 30, 2014
(in thousands)	Commercial		Mortgage Finance		Construction			Real Estate			Consumer		Leases			Unallocated			Total
Beginning balance	$	39,868	$	—	$	14,553		$	24,210		$	149	$	3,105		$	5,719		$	87,604
Provision for loan losses	20,900		—		(1,611		)	(6,095		)	112		(1,480		)	2,044			13,870
Charge-offs	8,518		—		—			296			101		—			—			8,915
Recoveries	3,480		—		—			45			66		172			—			3,763
Net charge-offs (recoveries)	5,038		—		—			251			35		(172		)	—			5,152
Ending balance	$	55,730	$	—	$	12,942		$	17,864		$	226	$	1,797		$	7,763		$	96,322
Period end amount allocated to:
Loans individually evaluated for impairment	$	5,999	$	—	$	—		$	660		$	—	$	2		$	—		$	6,661
Loans collectively evaluated for impairment	49,731		—		12,942			17,204			226		1,795			7,763			89,661
Ending balance	$	55,730	$	—	$	12,942		$	17,864		$	226	$	1,797		$	7,763		$	96,322

We have traditionally maintained an unallocated 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 unallocated reserves at September 30, 2015 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.

Our recorded investment in loans as of September 30, 2015, December 31, 2014 and September 30, 2014 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):

September 30, 2015
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	82,050	$	—	$	16,749	$	9,895	$	—	$	5,699	$	114,393
Loans collectively evaluated for impairment	6,471,589		4,312,790		1,847,429		3,048,679		24,757		112,945		15,818,189
Total	$	6,553,639	$	4,312,790	$	1,864,178	$	3,058,574	$	24,757	$	118,644	$	15,932,582
December 31, 2014
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	35,165	$	—	$	—	$	13,880	$	62	$	173	$	49,280
Loans collectively evaluated for impairment	5,834,054		4,102,125		1,416,405		2,793,247		19,637		99,322		14,264,790
Total	$	5,869,219	$	4,102,125	$	1,416,405	$	2,807,127	$	19,699	$	99,495	$	14,314,070
September 30, 2014
	Commercial		Mortgage Finance		Construction		Real Estate		Consumer		Leases		Total
Loans individually evaluated for impairment	$	27,109	$	—	$	—	$	17,904	$	—	$	10	$	45,023
Loans collectively evaluated for impairment	5,594,227		3,774,467		1,640,596		2,344,614		16,502		101,317		13,471,723
Total	$	5,621,336	$	3,774,467	$	1,640,596	$	2,362,518	$	16,502	$	101,327	$	13,516,746

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 September 30, 2015, $884,000 of our non-accrual loans were earning on a cash basis compared to $310,000 at December 31, 2014. 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 loan agreement. In accordance with ASC 310 Receivables ("ASC 310"), we have also included all restructured loans in our impaired loan totals. The following tables detail our impaired loans, by portfolio class, as of September 30, 2015 and December 31, 2014 (in thousands):

September 30, 2015
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial
Business loans	$	16,370	$	24,185	$	—	$	18,211	$	—
Energy	35,304		35,304		—		16,991		28
Construction
Market risk	16,749		16,749		—		7,444		—
Real estate
Market risk	3,591		3,591		—		3,671		—
Commercial	2,909		2,909		—		3,467		16
Secured by 1-4 family	—		—		—		—		—
Consumer	—		—		—		—		—
Leases	5,695		5,695		—		2,777		—
Total impaired loans with no allowance recorded	$	80,618	$	88,433	$	—	$	52,561	$	44
With an allowance recorded:
Commercial
Business loans	$	28,890	$	28,890	$	8,607	$	32,756	$	—
Energy	1,486		1,486		697		699		—
Construction
Market risk	—		—		—		—		—
Real estate
Market risk	1,785		1,785		29		2,421		—
Commercial	—		—		—		408		—
Secured by 1-4 family	1,610		1,610		225		1,710		—
Consumer	—		—		—		14		—
Leases	4		4		1		98		—
Total impaired loans with an allowance recorded	$	33,775	$	33,775	$	9,559	$	38,106	$	—
Combined:
Commercial
Business loans	$	45,260	$	53,075	$	8,607	$	50,967	$	—
Energy	36,790		36,790		697		17,690		28
Construction
Market risk	16,749		16,749		—		7,444		—
Real estate
Market risk	5,376		5,376		29		6,092		—
Commercial	2,909		2,909		—		3,875		16
Secured by 1-4 family	1,610		1,610		225		1,710		—
Consumer	—		—		—		14		—
Leases	5,699		5,699		1		2,875		—
Total impaired loans	$	114,393	$	122,208	$	9,559	$	90,667	$	44

December 31, 2014
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial
Business loans	$	9,608	$	11,857	$	—	$	7,334	$	—
Energy	—		—		—		375		25
Construction
Market risk	—		—		—		118		—
Real estate
Market risk	3,735		3,735		—		7,970		—
Commercial	3,521		3,521		—		2,795		—
Secured by 1-4 family	—		—		—		1,210		—
Consumer	—		—		—		—		—
Leases	—		—		—		—		—
Total impaired loans with no allowance recorded	$	16,864	$	19,113	$	—	$	19,802	$	25
With an allowance recorded:
Commercial
Business loans	$	24,553	$	25,553	$	7,433	$	17,705	$	—
Energy	1,004		1,004		272		991		—
Construction
Market risk	—		—		—		—		—
Real estate
Market risk	4,203		4,203		317		5,064		—
Commercial	526		526		79		705		—
Secured by 1-4 family	1,895		1,895		240		2,119		—
Consumer	62		62		9		16		—
Leases	173		173		26		41		—
Total impaired loans with an allowance recorded	$	32,416	$	33,416	$	8,376	$	26,641	$	—
Combined:
Commercial
Business loans	$	34,161	$	37,410	$	7,433	$	25,039	$	—
Energy	1,004		1,004		272		1,366		25
Construction
Market risk	—		—		—		118		—
Real estate
Market risk	7,938		7,938		317		13,034		—
Commercial	4,047		4,047		79		3,500		—
Secured by 1-4 family	1,895		1,895		240		3,329		—
Consumer	62		62		9		16		—
Leases	173		173		26		41		—
Total impaired loans	$	49,280	$	52,529	$	8,376	$	46,443	$	25

Average impaired loans outstanding during the nine months ended September 30, 2015 and 2014 totaled $90.7 million and $46.3 million, respectively.

The table below provides an age analysis of our past due loans that are still accruing and non-accrual loans, by portfolio class, as of September 30, 2015 (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	$	15,004	$	8,919	$	7,556	$	31,479	$	43,409	$	5,452,730	$	5,527,618
Energy	—		—		2		2		36,789		989,230		1,026,021
Mortgage finance loans	—		—		—		—		—		4,312,790		4,312,790
Construction
Market risk	—		—		—		—		16,749		1,831,340		1,848,089
Secured by 1-4 family	928		—		—		928		—		15,161		16,089
Real estate
Market risk	1,046		1,657		—		2,703		3,620		2,366,647		2,372,970
Commercial	—		15,405		—		15,405		2,909		573,353		591,667
Secured by 1-4 family	414		—		—		414		499		93,024		93,937
Consumer	350		—		—		350		—		24,407		24,757
Leases	—		—		—		—		5,699		112,945		118,644
Total loans held for investment	$	17,742	$	25,981	$	7,558	$	51,281	$	109,674	$	15,771,627	$	15,932,582

(1) Loans past due 90 days and still accruing includes premium finance loans of $6.2 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. As of September 30, 2015 and December 31, 2014, we had $249,000 and $1.8 million, respectively, in loans considered restructured that are not on non-accrual. These loans did not have unfunded commitments at September 30, 2015 or December 31, 2014. Of the non-accrual loans at September 30, 2015 and December 31, 2014, $26.1 million and $12.1 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 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 tables summarize, for the nine months ended September 30, 2015 and 2014, loans that were restructured during 2015 and 2014 (in thousands):

September 30, 2015
	Number of Restructured Loans	Pre-Restructuring Outstanding Recorded Investment		Post-Restructuring Outstanding Recorded Investment
Commercial business loans	5	$	20,459	$	15,438
Total new restructured loans in 2015	5	$	20,459	$	15,438
September 30, 2014
	Number of Restructured Loans	Pre-Restructuring Outstanding Recorded Investment		Post-Restructuring Outstanding Recorded Investment
Real estate—commercial	1	$	1,441	$	1,430
Commercial business loans	1	$	95	$	95
Total new restructured loans in 2014	2	$	1,536	$	1,525

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 September 30, 2015 or 2014.

The following table provides information on how restructured loans were modified during the nine months ended September 30, 2015 and 2014 (in thousands):

	Nine months ended September 30,
	2015		2014
Extended maturity	$	—	$	1,430
Combination of maturity extension and payment schedule adjustment	15,438		95
Total	$	15,438	$	1,525

As of September 30, 2015 and 2014, 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 (Tables)

9 Months Ended

Sep. 30, 2015

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 September 30,						Nine months ended September 30,
	2015			2014			2015			2014
Beginning balance	$	609		$	685		$	568		$	5,110
Additions	—			—			1,177			851
Sales	(422		)	(68		)	(1,558		)	(5,344		)
Valuation allowance for OREO	—			—			—			—
Direct write-downs	—			—			—			—
Ending balance	$	187		$	617		$	187		$	617

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2015

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 clientele 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.

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, 2014, included in our Annual Report on Form 10-K filed with the SEC on February 19, 2015 (the “2014 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 in the near term.

Loans Held-for-sale

Loans Held for Sale

Through our Mortgage Correspondent Aggregation ("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 government sponsored entities ("GSEs") such as Fannie Mae, Freddie Mac or Ginnie Mae. In some cases, we retain the mortgage servicing rights. 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 in accordance with ASC 825 "Financial Instruments". At the commitment date, we enter into a corresponding forward sale commitment with a third party, typically a GSE, to deliver the loans 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 mortgage servicing rights. Adjustments to reflect unrealized gains and losses resulting from changes in fair value and realized gains and losses upon ultimate sale of the loans are classified as non-interest income in the Consolidated Statements of Income and Other Comprehensive Income.

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STOCK-BASED COMPENSATION

9 Months Ended

Sep. 30, 2015

Compensation Related Costs [Abstract]

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION

On May 19, 2015, the Company's stockholders approved the Texas Capital Bancshares, Inc. 2015 Long-Term Incentive Plan (the "2015 Plan"), which provides for the issuance of up to 2,550,000 shares of common stock for compensation to the Company's key employees, certain key contractors and non-employee directors, subject to increase by up to approximately 751,887 shares underlying outstanding stock-settled awards granted pursuant to prior plans that may be forfeited, expire or may be canceled and available for reuse in the future pursuant to the terms of the 2015 Plan.

The fair value of our stock option and stock appreciation right (“SAR”) grants are estimated at the date of grant using the Black-Scholes option pricing model. The Black-Scholes option pricing model was developed for use in estimating the fair value of traded options which have no vesting restrictions and are fully transferable. In addition, option valuation models require the input of highly subjective assumptions including the expected stock price volatility. Because our employee stock options have characteristics significantly different from those of traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, in management’s opinion, the existing models do not necessarily provide the best single measure of the fair value of our employee stock options.

Stock-based compensation consists of SARs and RSUs granted from 2009 through September 30, 2015.

	Three months ended September 30,				Nine months ended September 30,
(in thousands)	2015		2014		2015		2014
Stock- based compensation expense recognized:
SARs	$	85	$	128	$	282	$	419
RSUs	1,140		972		3,046		3,209
Total compensation expense recognized	$	1,225	$	1,100	$	3,328	$	3,628

	September 30, 2015
(in thousands)	Options		SARs and RSUs
Unrecognized compensation expense related to unvested awards	$	—	$	14,068
Weighted average period over which expense is expected to be recognized, in years	N/A		3.4

In connection with the 2010 Long-term Incentive Plan, the Company has issued cash-based performance units. A summary of the compensation cost for these units is as follows (in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2015		2014		2015		2014
Cash-based performance units	$	1,420	$	3,357	$	5,958	$	8,062

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FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK

9 Months Ended

Sep. 30, 2015

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 which 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):

	September 30, 2015		December 31, 2014
Commitments to extend credit	$	5,192,901	$	5,324,460
Standby letters of credit	175,125		177,808

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REGULATORY MATTERS

9 Months Ended

Sep. 30, 2014

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.

In July 2013, the Federal Reserve published final rules for the adoption of the Basel III regulatory capital framework (the "Basel III Capital Rules"). The Basel III Capital Rules, among other things, (i) introduce a new capital measure called "Common Equity Tier 1" ("CET1"), (ii) specify that Tier 1 capital consist of CET1 and "Additional Tier 1 Capital" instruments meeting specified 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) expand the scope of the deductions/adjustments as compared to existing regulations. The Basel III Capital Rules became effective for us on January 1, 2015 with certain transition provisions fully phased in on January 1, 2019.

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 September 30, 2015, 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, Tier 1 risk-based, 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 September 30, 2015, and December 31, 2014. 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 capital ratios:

	September 30, 2015		December 31, 2014
Company
Risk-based capital:
CET1(1)	7.69	%	7.89	%
Tier 1 capital	9.10	%	9.46	%
Total capital	11.39	%	11.83	%
Leverage	9.08	%	10.76	%

(1) December 31, 2014 ratio is unaudited.

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 September 30, 2015, our total mortgage finance loans were $4.3 billion compared to the average for the quarter ended September 30, 2015 of $4.0 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. Due to the actual risk profile and liquidity of this asset class, we manage capital allocated to mortgage finance loans based on changing trends in average balances and do not believe that the quarter-end balance is representative of risk characteristics that would justify higher allocations. However, we will 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 and nine months ended September 30, 2015 or 2014.

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FAIR VALUE DISCLOSURES

9 Months Ended

Sep. 30, 2015

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.

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. 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 held for investment and OREO where collateral values have been based on third party appraisals; however, due to current economic conditions, comparative sales data typically used in appraisals may be unavailable or more subjective due to lack of market activity.

Assets and liabilities measured at fair value at September 30, 2015 and December 31, 2014 are as follows (in thousands):

	Fair Value Measurements Using
September 30, 2015	Level 1		Level 2		Level 3
Available for sale securities:(1)
Residential mortgage-backed securities	$	—	$	23,834	$	—
Municipals	—		831		—
Equity securities(2)	—		7,333		—
Loans held for sale (3)	—		1,062		—
Loans held for investment(4) (6)	—		—		50,000
OREO(5) (6)	—		—		187
Derivative assets(7)	—		46,927		—
Derivative liabilities(7)	—		46,935		—
December 31, 2014
Available for sale securities:(1)
Residential mortgage-backed securities	$	—	$	31,065	$	—
Municipals	—		3,267		—
Equity securities(2)	—		7,387		—
Loans held for sale(3)	—		—		—
Loans(4) (6)	—		—		23,536
OREO(5) (6)	—		—		568
Derivative assets(7)	—		31,176		—
Derivative liabilities(7)	—		31,176		—

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

(2) Equity securities consist of Community Reinvestment Act funds.

(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) Fair value of loans held for investment and OREO is 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.

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 also include those for which the determination of fair value requires significant management judgment or estimation. Currently, we measure fair value for certain loans and OREO on a nonrecurring basis as described below.

Loans held for investment

During nine months ended September 30, 2015 and the year ended December 31, 2014, certain impaired loans held for investment were re-evaluated and reported at fair value through a specific allocation of the allowance for loan losses based upon the fair value of the underlying collateral. The $50.0 million reported fair value above includes impaired loans held for investment at September 30, 2015 with a carrying value of $55.1 million that were reduced by specific allowance allocations totaling $5.1 million based on collateral valuations utilizing Level 3 valuation inputs. The $23.5 million reported fair value above includes impaired loans held for investment at December 31, 2014 with a carrying value of $29.2 million that were reduced by specific valuation allowance allocations totaling $5.7 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 valued based on third party appraisals less estimated selling costs. At September 30, 2015 and December 31, 2014, OREO had a carrying value of $187,000 and $568,000, 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

Generally accepted accounting principles require 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):

	September 30, 2015				December 31, 2014
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Cash and cash equivalents	$	2,446,950	$	2,446,950	$	1,330,514	$	1,330,514
Securities, available-for-sale	31,998		31,998		41,719		41,719
Loans held for sale	1,062		1,062		—		—
Loans held for investment, net	15,745,078		15,753,869		14,156,058		14,161,484
Derivative assets	46,927		46,927		31,176		31,176
Deposits	15,165,345		15,165,846		12,673,300		12,673,607
Federal funds purchased	73,650		73,650		66,971		66,971
Customer repurchase agreements	30,184		30,184		25,705		25,705
Other borrowings	1,250,000		1,250,000		1,100,005		1,100,005
Subordinated notes	286,000		292,179		286,000		289,947
Trust preferred subordinated debentures	113,406		113,406		113,406		113,406
Derivative liabilities	46,935		46,935		31,176		31,176

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

Cash and cash equivalents

The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents approximate their fair value, which is characterized as a Level 1 asset in the fair value hierarchy.

Securities

The fair value of investment securities is based on prices obtained from independent pricing services which are based on quoted market prices for the same or similar securities, which is characterized as a Level 2 asset 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 valued under the fair value option is derived from quoted market prices for similar loans, which is characterized as a Level 2 asset 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 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 is estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality.

Derivatives

The estimated fair value of interest rate swaps and caps is obtained from independent pricing services based on quoted market prices for the same or similar derivative contracts, which is characterized as a Level 2 asset in the fair value hierarchy. On a quarterly basis, we independently verify the fair value using an additional independent pricing source. 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. 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 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. Fixed-term certificate of deposit fair values are estimated using a discounted cash flow calculation that applies interest rates currently being offered on similar 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 values reported in the consolidated balance sheets for Federal funds purchased, customer repurchase agreements and other short-term, floating rate borrowings approximate their fair values, which are characterized as Level 2 assets in the fair value hierarchy. The fair values 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, which are characterized as Level 3 liabilities in the fair value hierarchy. The subordinated notes are publicly traded and are valued based on market prices, which are characterized as Level 2 liabilities in the fair value hierarchy.

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LOANS AND ALLOWANCE FOR LOAN LOSSES - Credit Risk Profile (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Loan commitments rated substandard or worse that are reviewed for loss potential	$ 500,000
Commercial	6,553,639,000	$ 5,869,219,000
Mortgage finance	4,312,790,000	4,102,125,000
Construction	1,864,178,000	1,416,405,000
Real estate	3,058,574,000	2,807,127,000
Consumer	24,757,000	19,699,000
Leases	118,644,000	99,495,000
Gross loans held for investment	15,932,582,000	14,314,070,000	$ 13,516,746,000
Pass
Financing Receivable, Recorded Investment [Line Items]
Commercial	6,244,334,000	5,738,474,000
Mortgage finance	4,312,790,000	4,102,125,000
Construction	1,845,094,000	1,414,671,000
Real estate	3,014,205,000	2,785,804,000
Consumer	24,497,000	19,579,000
Leases	110,295,000	91,044,000
Gross loans held for investment	15,551,215,000	14,151,697,000
Special mention
Financing Receivable, Recorded Investment [Line Items]
Commercial	113,542,000	53,839,000
Mortgage finance	0	0
Construction	1,771,000	1,734,000
Real estate	23,076,000	8,723,000
Consumer	26,000	11,000
Leases	2,650,000	4,363,000
Gross loans held for investment	141,065,000	68,670,000
Substandard-accruing
Financing Receivable, Recorded Investment [Line Items]
Commercial	115,565,000	43,784,000
Mortgage finance	0	0
Construction	564,000	0
Real estate	14,265,000	2,653,000
Consumer	234,000	47,000
Leases	0	3,915,000
Gross loans held for investment	130,628,000	50,399,000
Non-accrual
Financing Receivable, Recorded Investment [Line Items]
Commercial	80,198,000	33,122,000
Mortgage finance	0	0
Construction	16,749,000	0
Real estate	7,028,000	9,947,000
Consumer	0	62,000
Leases	5,699,000	173,000
Gross loans held for investment	$ 109,674,000	$ 43,304,000

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SECURITIES (Tables)

9 Months Ended

Sep. 30, 2015

Available-for-sale Securities [Abstract]

Schedule of summary of securities

At September 30, 2015, our net unrealized gain on the available-for-sale securities portfolio was $1.4 million compared to $2.0 million at December 31, 2014. As a percent of outstanding balances, the unr

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):

	September 30, 2015
	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	$	64		$	5,730		$	4,567		$	11,917		$	22,278
Estimated fair value	64			5,972			5,089			12,709			23,834
Weighted average yield(3)	5.65		%	4.75		%	5.54		%	2.41		%	3.66		%
Municipals:(2)
Amortized cost	265			563			—			—			828
Estimated fair value	265			566			—			—			831
Weighted average yield(3)	5.46		%	5.69		%	—			—			5.62		%
Equity securities:(4)
Amortized cost	7,522			—			—			—			7,522
Estimated fair value	7,333			—			—			—			7,333
Total available-for-sale securities:
Amortized cost													$	30,628
Estimated fair value													$	31,998

	December 31, 2014
	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	$	1		$	9,151		$	5,661		$	14,144		$	28,957
Estimated fair value	1			9,662			6,333			15,069			31,065
Weighted average yield(3)	6.50		%	4.79		%	5.54		%	2.36		%	3.75		%
Municipals:(2)
Amortized cost	1,669			1,588			—			—			3,257
Estimated fair value	1,674			1,593			—			—			3,267
Weighted average yield(3)	5.78		%	5.79		%	—		%	—		%	5.79		%
Equity securities:(4)
Amortized cost	7,522			—			—			—			7,522
Estimated fair value	7,387			—			—			—			7,387
Total available-for-sale securities:
Amortized cost													$	39,736
Estimated fair value													$	41,719

(1) Actual maturities may differ from contractual maturities because borrowers may have the right to call or 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 September 30, 2015 and December 31, 2014, 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):

September 30, 2015	Less Than 12 Months				12 Months or Longer					Total
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Equity securities	$	—	$	—	$	6,288	$	(212	)	$	6,288	$	(212	)
December 31, 2014	Less Than 12 Months				12 Months or Longer					Total
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Equity securities	$	—	$	—	$	6,349	$	(151	)	$	6,349	$	(151	)

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STOCK-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2015

Compensation Related Costs [Abstract]

Schedule of stock-based compensation costs

Stock-based compensation consists of SARs and RSUs granted from 2009 through September 30, 2015.

	Three months ended September 30,				Nine months ended September 30,
(in thousands)	2015		2014		2015		2014
Stock- based compensation expense recognized:
SARs	$	85	$	128	$	282	$	419
RSUs	1,140		972		3,046		3,209
Total compensation expense recognized	$	1,225	$	1,100	$	3,328	$	3,628

In connection with the 2010 Long-term Incentive Plan, the Company has issued cash-based performance units. A summary of the compensation cost for these units is as follows (in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2015		2014		2015		2014
Cash-based performance units	$	1,420	$	3,357	$	5,958	$	8,062

Schedule of unrecognized compensation costs

	September 30, 2015
(in thousands)	Options		SARs and RSUs
Unrecognized compensation expense related to unvested awards	$	—	$	14,068
Weighted average period over which expense is expected to be recognized, in years	N/A		3.4

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LOANS AND ALLOWANCE FOR LOAN LOSSES - TDR Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Financing Receivable, Modifications [Line Items]
Details of how restructured loans were modified	$ 15,438	$ 1,525
Extended maturity
Financing Receivable, Modifications [Line Items]
Details of how restructured loans were modified	0	1,430
Combination of maturity extension and payment schedule adjustment
Financing Receivable, Modifications [Line Items]
Details of how restructured loans were modified	$ 15,438	$ 95

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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, 2013	$ 1,096,350	$ 150,000	$ 410	$ 448,208	$ 496,112	$ (8)	$ 1,628
Shares, outstanding, beginning balance at Dec. 31, 2013		6,000,000	41,036,787			417
Comprehensive income:
Net income	98,518				98,518
Change in unrealized gain on available-for-sale securities, net of taxes	(269)						(269)
Total comprehensive income	98,249
Tax benefit related to exercise of stock-based awards	2,534			2,534
Stock-based compensation expense recognized in earnings	3,628			3,628
Issuance of preferred stock - value	0	$ 0		0
Issuance of preferred stock - shares		0
Preferred stock dividend	(7,313)				(7,313)
Issuance of stock related to stock-based awards - value	2,074		$ 2	2,076
Issuance of stock related to stock-based awards - shares			168,535
Issuance of common stock - value	106,548		$ 19	106,529
Issuance of common stock - shares			1,875,000
Issuance of common stock related to warrants - shares			99,229
Stockholders' equity, ending balance at Sep. 30, 2014	1,297,922	$ 150,000	$ 432	558,822	587,317	$ (8)	1,359
Shares, outstanding, ending balance at Sep. 30, 2014		6,000,000	43,179,551.000			417
Stockholders' equity, beginning balance at Dec. 31, 2014	1,484,190	$ 150,000	$ 457	709,738	622,714	$ (8)	1,289
Shares, outstanding, beginning balance at Dec. 31, 2014		6,000,000	45,735,424			417
Comprehensive income:
Net income	110,101				110,101
Change in unrealized gain on available-for-sale securities, net of taxes	(399)						(399)
Total comprehensive income	109,702
Tax benefit related to exercise of stock-based awards	1,092			1,092
Stock-based compensation expense recognized in earnings	3,328			3,328
Preferred stock dividend	(7,313)				(7,313)
Issuance of stock related to stock-based awards - value	948		$ (1)	949
Issuance of stock related to stock-based awards - shares			104,357
Stockholders' equity, ending balance at Sep. 30, 2015	$ 1,590,051	$ 150,000	$ 458	$ 713,209	$ 725,502	$ (8)	$ 890
Shares, outstanding, ending balance at Sep. 30, 2015		6,000,000	45,839,781.000			417.000

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SECURITIES

9 Months Ended

Sep. 30, 2015

Available-for-sale Securities [Abstract]

SECURITIES

SECURITIES

At September 30, 2015, our net unrealized gain on the available-for-sale securities portfolio was $1.4 million compared to $2.0 million at December 31, 2014. As a percent of outstanding balances, the unrealized gain was 4.47% and 4.99% at September 30, 2015, and December 31, 2014, respectively. The decrease in the unrealized gain percentage at September 30, 2015 is related to the reduction in the portfolio balance due to paydowns and maturities.

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

	September 30, 2015
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale securities:
Residential mortgage-backed securities	$	22,278	$	1,556	$	—		$	23,834
Municipals	828		3		—			831
Equity securities(1)	7,522		23		(212		)	7,333
	$	30,628	$	1,582	$	(212	)	$	31,998
	December 31, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale securities:
Residential mortgage-backed securities	$	28,957	$	2,108	$	—		$	31,065
Municipals	3,257		10		—			3,267
Equity securities(1)	7,522		16		(151		)	7,387
	$	39,736	$	2,134	$	(151	)	$	41,719

(1) Equity securities consist of Community Reinvestment Act funds.

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

	September 30, 2015
	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	$	64		$	5,730		$	4,567		$	11,917		$	22,278
Estimated fair value	64			5,972			5,089			12,709			23,834
Weighted average yield(3)	5.65		%	4.75		%	5.54		%	2.41		%	3.66		%
Municipals:(2)
Amortized cost	265			563			—			—			828
Estimated fair value	265			566			—			—			831
Weighted average yield(3)	5.46		%	5.69		%	—			—			5.62		%
Equity securities:(4)
Amortized cost	7,522			—			—			—			7,522
Estimated fair value	7,333			—			—			—			7,333
Total available-for-sale securities:
Amortized cost													$	30,628
Estimated fair value													$	31,998

	December 31, 2014
	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	$	1		$	9,151		$	5,661		$	14,144		$	28,957
Estimated fair value	1			9,662			6,333			15,069			31,065
Weighted average yield(3)	6.50		%	4.79		%	5.54		%	2.36		%	3.75		%
Municipals:(2)
Amortized cost	1,669			1,588			—			—			3,257
Estimated fair value	1,674			1,593			—			—			3,267
Weighted average yield(3)	5.78		%	5.79		%	—		%	—		%	5.79		%
Equity securities:(4)
Amortized cost	7,522			—			—			—			7,522
Estimated fair value	7,387			—			—			—			7,387
Total available-for-sale securities:
Amortized cost													$	39,736
Estimated fair value													$	41,719

(1) Actual maturities may differ from contractual maturities because borrowers may have the right to call or 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.

Securities with carrying values of approximately $22.5 million were pledged to secure certain borrowings and deposits at September 30, 2015. Of the pledged securities at September 30, 2015, approximately $7.2 million were pledged for certain deposits, and approximately $15.3 million were pledged for repurchase agreements.

The following table discloses, as of September 30, 2015 and December 31, 2014, 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):

September 30, 2015	Less Than 12 Months				12 Months or Longer					Total
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Equity securities	$	—	$	—	$	6,288	$	(212	)	$	6,288	$	(212	)
December 31, 2014	Less Than 12 Months				12 Months or Longer					Total
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Equity securities	$	—	$	—	$	6,349	$	(151	)	$	6,349	$	(151	)

At September 30, 2015, we owned one security with an unrealized loss position. This security is a publicly traded equity fund and is subject to market pricing volatility. We do not believe this unrealized loss is “other-than-temporary”. We have evaluated the near-term prospects of the investment in relation to the severity and duration of the impairment and based on that evaluation have the ability and intent to hold the investment until recovery of fair value.

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FAIR VALUE DISCLOSURES (Tables)

9 Months Ended

Sep. 30, 2015

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities measured at fair value

Assets and liabilities measured at fair value at September 30, 2015 and December 31, 2014 are as follows (in thousands):

	Fair Value Measurements Using
September 30, 2015	Level 1		Level 2		Level 3
Available for sale securities:(1)
Residential mortgage-backed securities	$	—	$	23,834	$	—
Municipals	—		831		—
Equity securities(2)	—		7,333		—
Loans held for sale (3)	—		1,062		—
Loans held for investment(4) (6)	—		—		50,000
OREO(5) (6)	—		—		187
Derivative assets(7)	—		46,927		—
Derivative liabilities(7)	—		46,935		—
December 31, 2014
Available for sale securities:(1)
Residential mortgage-backed securities	$	—	$	31,065	$	—
Municipals	—		3,267		—
Equity securities(2)	—		7,387		—
Loans held for sale(3)	—		—		—
Loans(4) (6)	—		—		23,536
OREO(5) (6)	—		—		568
Derivative assets(7)	—		31,176		—
Derivative liabilities(7)	—		31,176		—

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

(2) Equity securities consist of Community Reinvestment Act funds.

(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) Fair value of loans held for investment and OREO is 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.

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):

	September 30, 2015				December 31, 2014
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Cash and cash equivalents	$	2,446,950	$	2,446,950	$	1,330,514	$	1,330,514
Securities, available-for-sale	31,998		31,998		41,719		41,719
Loans held for sale	1,062		1,062		—		—
Loans held for investment, net	15,745,078		15,753,869		14,156,058		14,161,484
Derivative assets	46,927		46,927		31,176		31,176
Deposits	15,165,345		15,165,846		12,673,300		12,673,607
Federal funds purchased	73,650		73,650		66,971		66,971
Customer repurchase agreements	30,184		30,184		25,705		25,705
Other borrowings	1,250,000		1,250,000		1,100,005		1,100,005
Subordinated notes	286,000		292,179		286,000		289,947
Trust preferred subordinated debentures	113,406		113,406		113,406		113,406
Derivative liabilities	46,935		46,935		31,176		31,176

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 5) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Commercial | Energy
Financing Receivable, Impaired [Line Items]
Recorded investment			$ 0
With no related allowance recorded:
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 80,618		16,864
Unpaid principal balance	88,433		19,113
Related allowance	0		0
Average recorded investment	52,561		19,802
Interest income recognized	44		25
With no related allowance recorded: | Commercial | Business loans
Financing Receivable, Impaired [Line Items]
Recorded investment	16,370		9,608
Unpaid principal balance	24,185		11,857
Related allowance	0		0
Average recorded investment	18,211		7,334
Interest income recognized	0		0
With no related allowance recorded: | Commercial | Energy
Financing Receivable, Impaired [Line Items]
Recorded investment	35,304
Unpaid principal balance	35,304		0
Related allowance	0		0
Average recorded investment	16,991		375
Interest income recognized	28		25
With no related allowance recorded: | Construction | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	16,749		0
Unpaid principal balance	16,749		0
Related allowance	0		0
Average recorded investment	7,444		118
Interest income recognized	0		0
With no related allowance recorded: | Real estate | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	3,591		3,735
Unpaid principal balance	3,591		3,735
Related allowance	0		0
Average recorded investment	3,671		7,970
Interest income recognized	0		0
With no related allowance recorded: | Real estate | Commercial
Financing Receivable, Impaired [Line Items]
Recorded investment	2,909		3,521
Unpaid principal balance	2,909		3,521
Related allowance	0		0
Average recorded investment	3,467		2,795
Interest income recognized	16		0
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		1,210
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	5,695		0
Unpaid principal balance	5,695		0
Related allowance	0		0
Average recorded investment	2,777		0
Interest income recognized	0		0
With an allowance recorded:
Financing Receivable, Impaired [Line Items]
Recorded investment	33,775		32,416
Unpaid principal balance	33,775		33,416
Related allowance	9,559		8,376
Average recorded investment	38,106		26,641
Interest income recognized	0		0
With an allowance recorded: | Commercial | Business loans
Financing Receivable, Impaired [Line Items]
Recorded investment	28,890		24,553
Unpaid principal balance	28,890		25,553
Related allowance	8,607		7,433
Average recorded investment	32,756		17,705
Interest income recognized	0		0
With an allowance recorded: | Commercial | Energy
Financing Receivable, Impaired [Line Items]
Recorded investment	1,486		1,004
Unpaid principal balance	1,486		1,004
Related allowance	697		272
Average recorded investment	699		991
Interest income recognized	0		0
With an 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		0
Interest income recognized	0		0
With an allowance recorded: | Real estate | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	1,785		4,203
Unpaid principal balance	1,785		4,203
Related allowance	29		317
Average recorded investment	2,421		5,064
Interest income recognized	0		0
With an allowance recorded: | Real estate | Commercial
Financing Receivable, Impaired [Line Items]
Recorded investment	0		526
Unpaid principal balance	0		526
Related allowance	0		79
Average recorded investment	408		705
Interest income recognized	0		0
With an allowance recorded: | Real estate | Secured by 1-4 family
Financing Receivable, Impaired [Line Items]
Recorded investment	1,610		1,895
Unpaid principal balance	1,610		1,895
Related allowance	225		240
Average recorded investment	1,710		2,119
Interest income recognized	0		0
With an allowance recorded: | Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	0		62
Unpaid principal balance	0		62
Related allowance	0		9
Average recorded investment	14		16
Interest income recognized	0		0
With an allowance recorded: | Leases
Financing Receivable, Impaired [Line Items]
Recorded investment	4		173
Unpaid principal balance	4		173
Related allowance	1		26
Average recorded investment	98		41
Interest income recognized	0		0
Combined:
Financing Receivable, Impaired [Line Items]
Recorded investment	114,393		49,280
Unpaid principal balance	122,208		52,529
Related allowance	9,559		8,376
Average recorded investment	90,667	$ 46,333	46,443
Interest income recognized	44		25
Combined: | Commercial | Business loans
Financing Receivable, Impaired [Line Items]
Recorded investment	45,260		34,161
Unpaid principal balance	53,075		37,410
Related allowance	8,607		7,433
Average recorded investment	50,967		25,039
Interest income recognized	0		0
Combined: | Commercial | Energy
Financing Receivable, Impaired [Line Items]
Recorded investment	36,790		1,004
Unpaid principal balance	36,790		1,004
Related allowance	697		272
Average recorded investment	17,690		1,366
Interest income recognized	28		25
Combined: | Construction | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	16,749		0
Unpaid principal balance	16,749		0
Related allowance	0		0
Average recorded investment	7,444		118
Interest income recognized	0		0
Combined: | Real estate | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	5,376		7,938
Unpaid principal balance	5,376		7,938
Related allowance	29		317
Average recorded investment	6,092		13,034
Interest income recognized	0		0
Combined: | Real estate | Commercial
Financing Receivable, Impaired [Line Items]
Recorded investment	2,909		4,047
Unpaid principal balance	2,909		4,047
Related allowance	0		79
Average recorded investment	3,875		3,500
Interest income recognized	16		0
Combined: | Real estate | Secured by 1-4 family
Financing Receivable, Impaired [Line Items]
Recorded investment	1,610		1,895
Unpaid principal balance	1,610		1,895
Related allowance	225		240
Average recorded investment	1,710		3,329
Interest income recognized	0		0
Combined: | Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	0		62
Unpaid principal balance	0		62
Related allowance	0		9
Average recorded investment	14		16
Interest income recognized	0		0
Combined: | Leases
Financing Receivable, Impaired [Line Items]
Recorded investment	5,699		173
Unpaid principal balance	5,699		173
Related allowance	1		26
Average recorded investment	2,875		41
Interest income recognized	$ 0		$ 0

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EARNINGS PER COMMON SHARE (Tables)

9 Months Ended

Sep. 30, 2015

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   September 30,				Nine months ended   September 30,
	2015		2014		2015		2014
Numerator:
Net income	$	37,114	$	36,832	$	110,101	$	98,518
Preferred stock dividends	2,438		2,438		7,313		7,313
Net income available to common stockholders	34,676		34,394		$	102,788	91,205
Denominator:
Denominator for basic earnings per share— weighted average shares	45,827,902		43,143,580		45,792,470		42,842,143
Effect of employee stock-based awards(1)	216,499		284,859		216,448		333,690
Effect of warrants to purchase common stock	426,989		421,399		416,574		464,305
Denominator for dilutive earnings per share—adjusted weighted average shares and assumed conversions	46,471,390		43,849,838		46,425,492		43,640,138
Basic earnings per common share	$	0.76	$	0.80	$	2.24	$	2.13
Diluted earnings per common share	$	0.75	$	0.78	$	2.21	$	2.09

(1) Stock options, SARs and RSUs outstanding of 101,100 at September 30, 2015 and 50,500 at September 30, 2014 have not been included in diluted earnings per share because to do so would have been anti-dilutive for the periods presented.