Texas Capital Bancshares (TCBI) 10-Q 20 Oct 16 2016 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 20, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	TEXAS CAPITAL BANCSHARES INC/TX
Entity Central Index Key	1,077,428
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		46,013,269

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 117,345	$ 109,496
Interest-bearing deposits	3,441,074	1,626,374
Federal funds sold and securities purchased under resale agreements	30,000	55,000
Securities, available-for-sale	26,356	29,992
Loans held for sale, at fair value	648,684	86,075
Loans held for investment, mortgage finance	4,961,159	4,966,276
Loans held for investment (net of unearned income)	12,662,394	11,745,674
Less: Allowance for loan losses	180,436	141,111
Loans held for investment, net	17,443,117	16,570,839
Mortgage servicing rights, net	15,462	423
Premises and equipment, net	20,604	23,561
Accrued interest receivable and other assets	454,116	382,101
Goodwill and intangible assets, net	19,630	19,960
Total assets	22,216,388	18,903,821
Non-interest-bearing
Non-interest-bearing	8,789,740	6,386,911
Interest-bearing	9,355,383	8,697,708
Total deposits	18,145,123	15,084,619
Accrued interest payable	3,124	5,097
Other liabilities	196,579	153,433
Federal funds purchased and repurchase agreements	81,420	143,051
Other borrowings	1,670,000	1,500,000
Subordinated notes, net	280,954	280,682
Trust preferred subordinated debentures	113,406	113,406
Total liabilities	20,490,606	17,280,288
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	460	459
Additional paid-in capital	717,452	714,546
Retained earnings	857,238	757,818
Treasury stock (shares at cost: 417 at September 30, 2016 and December 31, 2015)	(8)	(8)
Accumulated other comprehensive income, net of taxes	640	718
Total stockholders’ equity	1,725,782	1,623,533
Total liabilities and stockholders’ equity	$ 22,216,388	$ 18,903,821

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Sep. 30, 2016	Dec. 31, 2015
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	46,009,912	45,874,224
Treasury Stock, shares	417	417

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Interest income
Interest and fees on loans	$ 177,724	$ 151,749	$ 501,673	$ 442,529
Securities	232	298	739	979
Federal funds sold and securities purchased under resale agreements	455	193	1,209	427
Deposits in other banks	4,081	1,616	11,116	4,203
Total interest income	182,492	153,856	514,737	448,138
Interest expense
Deposits	8,950	6,240	26,743	17,510
Federal funds purchased	126	56	362	217
Repurchase agreements	3	6	8	14
Other borrowings	1,730	672	4,257	1,590
Subordinated notes	4,191	4,191	12,573	12,573
Trust preferred subordinated debentures	753	643	2,203	1,892
Total interest expense	15,753	11,808	46,146	33,796
Net interest income	166,739	142,048	468,591	414,342
Provision for credit losses	22,000	13,750	68,000	39,250
Net interest income after provision for credit losses	144,739	128,298	400,591	375,092
Non-interest income
Service charges on deposit accounts	2,880	2,096	7,401	6,339
Trust fee income	1,113	1,222	3,024	3,709
Bank owned life insurance (BOLI) income	520	484	1,592	1,444
Brokered loan fees	7,581	4,885	18,090	14,394
Swap fees	918	254	2,330	3,275
Other	3,704	2,439	9,508	7,257
Total non-interest income	16,716	11,380	41,945	36,418
Non-interest expense
Salaries and employee benefits	56,722	48,583	162,904	142,611
Net occupancy expense	5,634	5,874	17,284	17,373
Marketing	4,292	3,999	12,686	12,142
Legal and professional	5,333	5,510	16,883	15,176
Communications and technology	6,620	5,180	19,228	15,905
FDIC insurance assessment	6,355	4,489	17,867	12,490
Allowance and other carrying costs for OREO	269	1	765	16
Other	9,574	8,052	28,257	23,768
Total non-interest expense	94,799	81,688	275,874	239,481
Income before income taxes	66,656	57,990	166,662	172,029
Income tax expense	23,931	20,876	59,929	61,928
Net income	42,725	37,114	106,733	110,101
Preferred stock dividends	2,438	2,438	7,313	7,313
Net income available to common stockholders	40,287	34,676	99,420	102,788
Other comprehensive income (loss)
Change in net unrealized gain on available-for-sale securities arising during period, before-tax	(63)	(216)	(121)	(613)
Income tax benefit related to net unrealized gain on available-for-sale securities	(23)	(75)	(43)	(214)
Other comprehensive loss, net of tax	(40)	(141)	(78)	(399)
Comprehensive income	$ 42,685	$ 36,973	$ 106,655	$ 109,702
Basic earnings per common share (usd per share)	$ 0.88	$ 0.76	$ 2.16	$ 2.24
Diluted earnings per common share (usd per share)	$ 0.87	$ 0.75	$ 2.14	$ 2.21

CONSOLIDATED STATEMENTS OF STOC

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, 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
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	(948)		$ (1)	(949)
Issuance of stock related to stock-based awards - shares			135,688
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	45,871,112			417
Stockholders' equity, beginning balance at Dec. 31, 2015	1,623,533	$ 150,000	$ 459	714,546	757,818	$ (8)	718
Shares, outstanding, beginning balance at Dec. 31, 2015		6,000,000	45,874,224			417
Comprehensive income:
Net income	106,733				106,733
Change in unrealized gain on available-for-sale securities, net of taxes	(78)						(78)
Total comprehensive income	106,655
Tax benefit related to exercise of stock-based awards	1,213			1,213
Stock-based compensation expense recognized in earnings	3,466			3,466
Preferred stock dividend	(7,313)				(7,313)
Issuance of stock related to stock-based awards - value	(1,772)		$ (1)	(1,773)
Issuance of stock related to stock-based awards - shares			135,688
Stockholders' equity, ending balance at Sep. 30, 2016	$ 1,725,782	$ 150,000	$ 460	$ 717,452	$ 857,238	$ (8)	$ 640
Shares, outstanding, ending balance at Sep. 30, 2016		6,000,000	46,009,912			417

CONSOLIDATED STATEMENTS OF STO6

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Stockholders' Equity [Abstract]
Income tax benefit (expense) related to net unrealized gain on available-for-sale securities	$ 23	$ 75	$ 43	$ 214

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating activities
Income from continuing operations	$ 106,733	$ 110,101
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	68,000	39,250
Depreciation and amortization	16,179	12,230
Accretion (Amortization) of Discounts and Premiums, Investments	(414)	0
Bank owned life insurance (BOLI) income	(1,592)	(1,444)
Stock-based compensation expense	(6,175)	(9,286)
Excess tax benefits from stock-based compensation arrangements	(1,328)	(1,134)
Purchases of loans held for sale	1,927,702	4,440
Proceeds from sales and repayments of loans held for sale	1,368,666	3,378
Capitalization of mortgage servicing rights	16,344	0
(Gain) loss on sale of loans held for sale and other assets	(1,307)	134
Changes in operating assets and liabilities:
Accrued interest receivable and other assets	(79,267)	(77,873)
Accrued interest payable and other liabilities	34,172	2,339
Net cash provided by (used in) operating activities	(427,201)	91,827
Investing activities
Purchases of available-for-sale securities	(1,278)	0
Maturities and calls of available-for-sale securities	265	2,430
Principal payments received on available-for-sale securities	4,528	6,677
Originations of mortgage finance loans	(74,594,117)	(66,786,322)
Proceeds from pay-offs of mortgage finance loans	74,599,234	66,575,657
Net increase in loans held for investment, excluding mortgage finance loans	(943,534)	(1,417,605)
Purchase of premises and equipment, net	(1,526)	(3,729)
Proceeds from sale of foreclosed assets	62	1,430
Net cash used in investing activities	(936,366)	(1,621,462)
Financing activities
Net increase in deposits	3,060,504	2,492,045
Costs from issuance of stock related to stock-based awards and warrants	(1,772)	(948)
Preferred dividends paid	(7,313)	(7,313)
Net increase in other borrowings	170,000	149,995
Excess tax benefits from stock-based compensation arrangements	1,328	1,134
Net increase (decrease) in Federal funds purchased and repurchase agreements	(61,631)	11,158
Net cash provided by financing activities	3,161,116	2,646,071
Net increase in cash and cash equivalents	1,797,549	1,116,436
Cash and cash equivalents at beginning of period	1,790,870	1,330,514
Cash and cash equivalents at end of period	3,588,419	2,446,950
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	48,119	35,849
Cash paid during the period for income taxes	68,716	70,208
Transfers from loans/leases to OREO and other repossessed assets	$ 18,822	$ 1,177

OPERATIONS AND SUMMARY OF SIGNI

OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	9 Months Ended
	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Operations and summary of significant accounting policies	OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization and Nature of Business Texas Capital Bancshares, Inc. (the “Company”), a Delaware corporation, was incorporated in November 1996 and commenced banking operations in December 1998. The consolidated financial statements of the Company include the accounts of Texas Capital Bancshares, Inc. and its wholly owned subsidiary, Texas Capital Bank, National Association (the “Bank”). We serve the needs of commercial businesses and successful professionals and entrepreneurs located in Texas as well as operate several lines of business serving a regional and national clientèle of commercial borrowers. We are primarily a secured lender, with our greatest concentration of loans in Texas. Basis of Presentation Our accounting and reporting policies conform to accounting principles generally accepted in the United States (“GAAP”) and to generally accepted practices within the banking industry. Certain prior period balances have been reclassified to conform to the current period presentation. 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, 2015 , included in our Annual Report on Form 10-K filed with the SEC on February 18, 2016 (the “2015 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 certain assets and liabilities and the status of contingencies are particularly susceptible to significant change in the near term.

EARNINGS PER COMMON SHARE

EARNINGS PER COMMON SHARE	9 Months Ended
	Sep. 30, 2016
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 Nine months ended 2016 2015 2016 2015 Numerator: Net income $ 42,725 $ 37,114 $ 106,733 $ 110,101 Preferred stock dividends 2,438 2,438 7,313 7,313 Net income available to common stockholders 40,287 34,676 $ 99,420 102,788 Denominator: Denominator for basic earnings per share— weighted average shares 45,980,517 45,827,902 45,931,357 45,792,470 Effect of employee stock-based awards (1) 118,885 216,499 119,021 216,448 Effect of warrants to purchase common stock 410,281 426,989 382,578 416,574 Denominator for dilutive earnings per share—adjusted weighted average shares and assumed conversions 46,509,683 46,471,390 46,432,956 46,425,492 Basic earnings per common share $ 0.88 $ 0.76 $ 2.16 $ 2.24 Diluted earnings per common share $ 0.87 $ 0.75 $ 2.14 $ 2.21 (1) Stock options, SARs and RSUs outstanding of 319,476 at September 30, 2016 and 101,100 at September 30, 2015 have not been included in diluted earnings per share because to do so would have been anti-dilutive for the periods presented.

SECURITIES

SECURITIES	9 Months Ended
	Sep. 30, 2016
Available-for-sale Securities [Abstract]
SECURITIES	SECURITIES At September 30, 2016 , our net unrealized gain on the available-for-sale securities portfolio was $985,000 compared to $1.1 million at December 31, 2015 . As a percent of outstanding balances, the unrealized gain was 3.88% and 3.83% at September 30, 2016 , and December 31, 2015 , respectively. The increase in the unrealized gain percentage at September 30, 2016 results from 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, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Available-for-sale securities: Residential mortgage-backed securities $ 16,007 $ 1,139 $ — $ 17,146 Municipals 564 2 — 566 Equity securities (1) 8,800 49 (205 ) 8,644 $ 25,371 $ 1,190 $ (205 ) $ 26,356 December 31, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Available-for-sale securities: Residential mortgage-backed securities $ 20,536 $ 1,365 $ — $ 21,901 Municipals 828 3 — 831 Equity securities (1) 7,522 11 (273 ) 7,260 $ 28,886 $ 1,379 $ (273 ) $ 29,992 (1) Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan. The amortized cost and estimated fair value of available-for-sale securities are presented below by contractual maturity (in thousands, except percentage data): September 30, 2016 Less Than One Year After One Through Five Years After Five Through Ten Years After Ten Years Total Available-for-sale: Residential mortgage-backed securities: (1) Amortized cost $ 50 $ 2,565 $ 3,418 $ 9,974 $ 16,007 Estimated fair value 50 2,649 3,856 10,591 17,146 Weighted average yield (3) 5.50 % 4.70 % 5.54 % 2.69 % 3.63 % Municipals: (2) Amortized cost 275 289 — — 564 Estimated fair value 275 291 — — 566 Weighted average yield (3) 5.61 % 5.76 % — — 5.69 % Equity securities: (4) Amortized cost 8,800 — — — 8,800 Estimated fair value 8,644 — — — 8,644 Total available-for-sale securities: Amortized cost $ 25,371 Estimated fair value $ 26,356 December 31, 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 $ 214 $ 4,655 $ 4,265 $ 11,402 $ 20,536 Estimated fair value 217 4,837 4,747 12,100 21,901 Weighted average yield (3) 5.62 % 4.71 % 5.54 % 2.53 % 3.68 % 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 7,260 — — — 7,260 Total available-for-sale securities: Amortized cost $ 28,886 Estimated fair value $ 29,992 (1) Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties. (2) Yields have been adjusted to a tax equivalent basis assuming a 35% federal tax rate. (3) Yields are calculated based on amortized cost. (4) These equity securities do not have a stated maturity. Securities with carrying values of approximately $15.2 million were pledged to secure certain borrowings and deposits at September 30, 2016 . Of the pledged securities at September 30, 2016 , approximately $4.0 million were pledged for certain deposits, and approximately $11.2 million were pledged for repurchase agreements. The following table discloses, as of September 30, 2016 and December 31, 2015 , 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, 2016 Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Equity securities $ — $ — $ 6,295 $ (205 ) $ 6,295 $ (205 ) December 31, 2015 Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Equity securities $ — $ — $ 6,227 $ (273 ) $ 6,227 $ (273 ) At September 30, 2016 , 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.

LOANS AND ALLOWANCE FOR LOAN LO

LOANS AND ALLOWANCE FOR LOAN LOSSES	9 Months Ended
	Sep. 30, 2016
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, 2016 and December 31, 2015 , loans held for investment were as follows (in thousands): September 30, December 31, Commercial $ 7,053,979 $ 6,672,631 Mortgage finance 4,961,159 4,966,276 Construction 2,150,453 1,851,717 Real estate 3,391,831 3,139,197 Consumer 27,554 25,323 Leases 96,878 113,996 Gross loans held for investment 17,681,854 16,769,140 Deferred income (net of direct origination costs) (58,301 ) (57,190 ) Allowance for loan losses (180,436 ) (141,111 ) Total loans held for investment $ 17,443,117 $ 16,570,839 Commercial Loans and Leases. Our commercial loan portfolio is comprised of lines of credit for working capital and term loans and leases to finance equipment and other business assets. Our energy production loans are generally collateralized with proven reserves based on appropriate valuation standards and take into account the risk of oil and gas price volatility. Our commercial loans and leases are underwritten after carefully evaluating and understanding the borrower’s ability to operate profitably. Our underwriting standards are designed to promote relationship banking rather than to make loans on a transaction basis. Our lines of credit typically are limited to a percentage of the value of the assets securing the line. Lines of credit and term loans typically are reviewed annually, or more frequently, as needed, and are supported by accounts receivable, inventory, equipment and other assets of our clients’ businesses. Mortgage Finance Loans. Our mortgage finance loans consist of ownership interests purchased in single-family residential mortgages funded through our mortgage finance group. These loans are typically held on our balance sheet for 10 to 20 days. We have agreements with mortgage lenders and purchase interests in individual loans they originate. All loans are underwritten consistent with established programs for permanent financing with financially sound investors. Substantially all loans are conforming loans. September 30, 2016 and December 31, 2015 balances are stated net of $1.0 billion and $454.8 million participations sold, respectively. Construction Loans. Our construction loan portfolio consists primarily of single- and multi-family residential properties and commercial projects used in manufacturing, warehousing, service or retail businesses. Our construction loans generally have terms of one to three years. We typically make construction loans to developers, builders and contractors that have an established record of successful project completion and loan repayment and have a substantial equity investment in the borrowers. Loan amounts are derived primarily from the Bank's evaluation of expected cash flows available to service debt from stabilized projects under hypothetically stressed conditions. Construction loans are also based in part upon estimates of costs and value associated with the completed project. Sources of repayment for these types of loans may be pre-committed permanent loans from other lenders, sales of developed property, or an interim loan commitment from us until permanent financing is obtained. The nature of these loans makes ultimate repayment sensitive to overall economic conditions. Borrowers may not be able to correct conditions of default in loans, increasing risk of exposure to classification, non-performing status, reserve allocation and actual credit loss and foreclosure. These loans typically have floating rates and commitment fees. Real Estate Loans. A portion of our real estate loan portfolio is comprised of loans secured by properties other than market risk or investment-type real estate. Market risk loans are real estate loans where the primary source of repayment is expected to come from the sale, permanent financing or lease of the real property collateral. We generally provide temporary financing for commercial and residential property. These loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Our real estate loans generally have maximum terms of five to seven years, and we provide loans with both floating and fixed rates. We generally avoid long-term loans for commercial real estate held for investment. Real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy. Appraised values may be highly variable due to market conditions and the impact of the inability of potential purchasers and lessees to obtain financing and a lack of transactions at comparable values. At September 30, 2016 and December 31, 2015 , we had a blanket floating lien on certain real estate-secured loans, mortgage finance loans and certain securities used as collateral for Federal Home Loan Bank (“FHLB”) borrowings. Summary of Loan Loss Experience The allowance for loan losses is comprised of specific reserves for impaired loans and an additional qualitative reserve based on our estimate of losses inherent in the portfolio at the balance sheet date, but not yet identified with specified loans. We consider the allowance at September 30, 2016 to be appropriate, given management's assessment of losses inherent in the portfolio as of the evaluation date, the significant growth in the loan and lease portfolio, current economic conditions in our market areas and other factors. The following tables summarize the credit risk profile of our loan portfolio by internally assigned grades and non-accrual status as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 Commercial Mortgage Finance Construction Real Estate Consumer Leases Total Grade: Pass $ 6,605,475 $ 4,961,159 $ 2,130,826 $ 3,348,510 $ 27,210 $ 92,875 $ 17,166,055 Special mention 128,785 — 7,361 34,581 — 37 170,764 Substandard-accruing 153,386 — 12,107 6,319 144 3,966 175,922 Non-accrual 166,333 — 159 2,421 200 — 169,113 Total loans held for investment $ 7,053,979 $ 4,961,159 $ 2,150,453 $ 3,391,831 $ 27,554 $ 96,878 $ 17,681,854 December 31, 2015 Commercial Mortgage Finance Construction Real Estate Consumer Leases Total Grade: Pass $ 6,375,332 $ 4,966,276 $ 1,821,678 $ 3,085,463 $ 25,093 $ 103,560 $ 16,377,402 Special mention 111,911 — 13,090 30,585 3 334 155,923 Substandard-accruing 46,731 — 281 3,837 227 4,951 56,027 Non-accrual 138,657 — 16,668 19,312 — 5,151 179,788 Total loans held for investment $ 6,672,631 $ 4,966,276 $ 1,851,717 $ 3,139,197 $ 25,323 $ 113,996 $ 16,769,140 The following table details activity in the allowance for loan losses by portfolio segment for the nine months ended September 30, 2016 and September 30, 2015 . Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. September 30, 2016 (in thousands) Commercial Mortgage Finance Construction Real Estate Consumer Leases Additional Qualitative Reserve Total Beginning balance $ 112,446 $ — $ 6,836 $ 13,381 $ 338 $ 3,931 $ 4,179 $ 141,111 Provision for loan losses 65,446 — 1,607 1,981 (23 ) (2,646 ) (226 ) 66,139 Charge-offs 34,232 — — 528 40 — — 34,800 Recoveries 7,829 — 34 36 16 71 — 7,986 Net charge-offs (recoveries) 26,403 — (34 ) 492 24 (71 ) — 26,814 Ending balance $ 151,489 $ — $ 8,477 $ 14,870 $ 291 $ 1,356 $ 3,953 $ 180,436 Period end amount allocated to: Loans individually evaluated for impairment $ 42,674 $ — $ 24 $ 136 $ 30 $ — $ — $ 42,864 Loans collectively evaluated for impairment 108,815 — 8,453 14,734 261 1,356 3,953 137,572 Ending balance $ 151,489 $ — $ 8,477 $ 14,870 $ 291 $ 1,356 $ 3,953 $ 180,436 September 30, 2015 (in thousands) Commercial Mortgage Finance Construction Real Estate Consumer Leases Additional Qualitative Reserve 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 We have traditionally maintained an additional qualitative reserve component to compensate for the uncertainty and complexity in estimating loan and lease losses including factors and conditions that may not be fully reflected in the determination and application of the allowance allocation percentages. We believe the level of additional qualitative reserve at September 30, 2016 is warranted due to the continued uncertain economic environment which has produced losses, including those resulting from borrowers' misstatement of financial information or inaccurate certification of collateral values. Such losses are not necessarily correlated with historical loss trends or general economic conditions. Our methodology used to calculate the allowance considers historical losses; however, the historical loss rates for specific product types or credit risk grades may not fully incorporate the effects of continued weakness in the economy and continued volatility in the energy sector. Our recorded investment in loans as of September 30, 2016 , December 31, 2015 and September 30, 2015 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, 2016 Commercial Mortgage Finance Construction Real Estate Consumer Leases Total Loans individually evaluated for impairment $ 168,014 $ — $ 159 $ 3,787 $ 200 $ — $ 172,160 Loans collectively evaluated for impairment 6,885,965 4,961,159 2,150,294 3,388,044 27,354 96,878 17,509,694 Total $ 7,053,979 $ 4,961,159 $ 2,150,453 $ 3,391,831 $ 27,554 $ 96,878 $ 17,681,854 December 31, 2015 Commercial Mortgage Finance Construction Real Estate Consumer Leases Total Loans individually evaluated for impairment $ 140,479 $ — $ 16,668 $ 21,042 $ — $ 5,151 $ 183,340 Loans collectively evaluated for impairment 6,532,152 4,966,276 1,835,049 3,118,155 25,323 108,845 16,585,800 Total $ 6,672,631 $ 4,966,276 $ 1,851,717 $ 3,139,197 $ 25,323 $ 113,996 $ 16,769,140 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 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, 2016 , $ 816,000 of our non-accrual loans were earning on a cash basis compared to $ 884,000 at December 31, 2015 . A loan is placed back on accrual status when both principal and interest are current and it is probable that we will be able to collect all amounts due (both principal and interest) according to the terms of the loan agreement. A loan held for investment is considered impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due (both principal and interest) according to the terms of the original loan agreement. In accordance with ASC 310 Receivables ("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, 2016 and December 31, 2015 (in thousands): September 30, 2016 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial Business loans $ 15,615 $ 18,839 $ — $ 10,359 $ — Energy 61,339 71,100 — 53,274 — Construction Market risk — — — 3,704 — Real estate Market risk — — — — — Commercial 2,087 2,087 — 5,282 28 Secured by 1-4 family — — — — — Consumer — — — — — Leases — — — 537 — Total impaired loans with no allowance recorded $ 79,041 $ 92,026 $ — $ 73,156 $ 28 With an allowance recorded: Commercial Business loans $ 23,079 $ 23,154 $ 9,516 $ 22,207 $ — Energy 67,981 72,535 33,158 74,770 18 Construction Market risk 159 159 24 18 — Real estate Market risk 1,366 1,366 20 3,548 — Commercial — — — — — Secured by 1-4 family 334 334 116 469 — Consumer 200 200 30 22 — Leases — — — 722 — Total impaired loans with an allowance recorded $ 93,119 $ 97,748 $ 42,864 $ 101,756 $ 18 Combined: Commercial Business loans $ 38,694 $ 41,993 $ 9,516 $ 32,566 $ — Energy 129,320 143,635 33,158 128,044 18 Construction Market risk 159 159 24 3,722 — Real estate Market risk 1,366 1,366 20 3,548 — Commercial 2,087 2,087 — 5,282 28 Secured by 1-4 family 334 334 116 469 — Consumer 200 200 30 22 — Leases — — — 1,259 — Total impaired loans $ 172,160 $ 189,774 $ 42,864 $ 174,912 $ 46 December 31, 2015 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial Business loans $ 11,097 $ 13,529 $ — $ 17,311 $ — Energy 37,968 37,968 — 21,791 36 Construction Market risk 16,668 16,668 — 9,764 — Real estate Market risk — — — 3,352 — Commercial 15,353 15,353 — 4,364 24 Secured by 1-4 family — — — — — Consumer — — — — — Leases 2,417 2,417 — 3,233 — Total impaired loans with no allowance recorded $ 83,503 $ 85,935 $ — $ 59,815 $ 60 With an allowance recorded: Commercial Business loans $ 20,983 $ 25,300 $ 5,737 $ 31,131 $ — Energy 70,431 70,431 14,103 6,641 — Construction Market risk — — — — — Real estate Market risk 5,335 5,335 1,066 2,558 — Commercial — — — 306 — Secured by 1-4 family 354 354 125 1,580 — Consumer — — — 10 — Leases 2,734 2,734 2,436 302 — Total impaired loans with an allowance recorded $ 99,837 $ 104,154 $ 23,467 $ 42,528 $ — Combined: Commercial Business loans $ 32,080 $ 38,829 $ 5,737 $ 48,442 $ — Energy 108,399 108,399 14,103 28,432 36 Construction Market risk 16,668 16,668 — 9,764 — Real estate Market risk 5,335 5,335 1,066 5,910 — Commercial 15,353 15,353 — 4,670 24 Secured by 1-4 family 354 354 125 1,580 — Consumer — — — 10 — Leases 5,151 5,151 2,436 3,535 — Total impaired loans $ 183,340 $ 190,089 $ 23,467 $ 102,343 $ 60 Average impaired loans outstanding during the nine months ended September 30, 2016 and 2015 totaled $174.9 million and $ 90.7 million , respectively. The table below provides an age analysis of our loans held for investment as of September 30, 2016 (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 $ 37,993 $ 14,827 $ 9,593 $ 62,413 $ 37,013 $ 6,012,367 $ 6,111,793 Energy 1,179 — — 1,179 129,320 811,687 942,186 Mortgage finance loans — — — — — 4,961,159 4,961,159 Construction Market risk 14,015 334 — 14,349 159 2,125,683 2,140,191 Secured by 1-4 family 1,063 — — 1,063 — 9,199 10,262 Real estate Market risk — 639 — 639 — 2,548,337 2,548,976 Commercial — — — — 2,087 654,029 656,116 Secured by 1-4 family 382 47 107 536 334 185,869 186,739 Consumer — 7 6 13 200 27,341 27,554 Leases 41 — — 41 — 96,837 96,878 Total loans held for investment $ 54,673 $ 15,854 $ 9,706 $ 80,233 $ 169,113 $ 17,432,508 $ 17,681,854 (1) Loans past due 90 days and still accruing includes premium finance loans of $7.1 million . These loans are generally secured by obligations of insurance carriers to refund premiums on canceled insurance policies. The refund of premiums from the insurance carriers can take 180 days or longer from the cancellation date. Restructured loans are loans on which, due to the borrower’s financial difficulties, we have granted a concession that we would not otherwise consider for borrowers of similar credit quality. This may include a transfer of real estate or other assets from the borrower, a modification of loan terms, or a combination of the two. Modifications of terms that could potentially qualify as a restructuring include reduction of the contractual interest rate, extension of the maturity date at a contractual interest rate lower than the current rate for new debt with similar risk, a reduction of the face amount of debt or forgiveness of either principal or accrued interest. At September 30, 2016 , we did not have any loans considered restructured that were not on non-accrual compared to $249,000 at December 31, 2015 . These loans did not have unfunded commitments at September 30, 2016 or December 31, 2015 . Of the non-accrual loans at September 30, 2016 and December 31, 2015 , $19.7 million and $24.9 million , respectively, met the criteria for restructured. These loans had no unfunded commitments at their respective balance sheet dates. A loan continues to qualify as restructured until a consistent payment history or change in borrower’s financial condition has been evidenced, generally over no less than twelve months. Assuming that the restructuring agreement specifies an interest rate at the time of the restructuring that is greater than or equal to the rate that we are willing to accept for a new extension of credit with comparable risk, then the loan no longer has to be considered a restructuring if it is in compliance with the modified terms in calendar years after the year of the restructure. The following tables summarize, for the nine months ended September 30, 2016 and 2015 , loans that were restructured during 2016 and 2015 (in thousands): September 30, 2016 Number of Restructured Loans Pre-Restructuring Outstanding Recorded Investment Post-Restructuring Outstanding Recorded Investment Energy loans 2 $ 14,235 $ 13,289 Commercial business loans — $ — $ — Real estate - market risk — $ — $ — Total new restructured loans in 2016 2 $ 14,235 $ 13,289 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 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, 2016 or 2015 . The following table provides information on how restructured loans were modified during the nine months ended September 30, 2016 and 2015 (in thousands): Nine months ended September 30, 2016 2015 Extended maturity $ — $ — Adjusted payment schedule 12,647 — Combination of maturity extension and payment schedule adjustment 642 15,438 Total $ 13,289 $ 15,438 As of September 30, 2016 and 2015 , we did not have any loans that were restructured within the last 12 months that subsequently defaulted.

OREO AND VALUATION ALLOWANCE FO

OREO AND VALUATION ALLOWANCE FOR LOSSES ON OREO	9 Months Ended
	Sep. 30, 2016
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, 2016 2015 2016 2015 Beginning balance $ 18,727 $ 609 $ 278 $ 568 Additions 282 — 18,822 1,177 Sales — (422 ) (91 ) (1,558 ) Valuation allowance for OREO — — — — Direct write-downs — — — — Ending balance $ 19,009 $ 187 $ 19,009 $ 187 The addition to OREO during the nine months ended September 30, 2016 relates to the foreclosure of three commercial properties.

CERTAIN TRANSFERS OF FINANCIAL

CERTAIN TRANSFERS OF FINANCIAL ASSETS (Notes)	9 Months Ended
	Sep. 30, 2016
Transfers and Servicing [Abstract]
CERTAIN TRANSFERS OF FINANCIAL ASSETS	CERTAIN TRANSFERS OF FINANCIAL ASSETS Through our Mortgage Correspondent Aggregation ("MCA") business, we commit to purchase residential mortgage loans from 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. We have elected to carry these loans at fair value based on sales commitments and market quotes. Changes in the fair value of the loans held for sale are included in other non-interest income. Residential mortgage loans are subject to both credit and interest rate risk. Credit risk is managed through underwriting policies and procedures, including collateral requirements, which are generally accepted by the secondary loan markets. Exposure to interest rate fluctuations is partially managed through forward sales contracts, which set the price for loans that will be delivered in the next 60 to 90 days. The table below presents the unpaid principal balance of loans held for sale and related fair values at September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Unpaid principal balance $ 620,207 $ 82,853 Fair value 648,684 86,075 Fair value over/(under) unpaid principal balance $ 28,477 $ 3,222 No loans held for sale were 90 days or more past due or on non-accrual as of September 30, 2016 and December 31, 2015 . The differences between the fair value and the aggregate unpaid principal balance include changes in fair value recorded at and subsequent to purchase, gains and losses on the related loan purchase commitment prior to purchase and premiums or discounts on acquired loans. We generally retain the right to service the loans sold, creating mortgage servicing rights ("MSRs") which are recorded as assets on our balance sheet. A summary of MSR activities for the nine months ended September 30, 2016 is as follows (in thousands): Servicing asset: Balance, beginning of year(1) $ 423 Capitalized servicing rights 16,344 Amortization (891 ) Balance, end of period $ 15,876 Valuation allowance: Balance, beginning of year $ — Increase in valuation allowance 414 Balance, end of period $ 414 Servicing asset, net(1) $ 15,462 Fair value $ 15,970 (1) Mortgage servicing rights are reported on the consolidated balance sheets at lower of cost or market. Carrying value and fair value were the same at December 31, 2015 , respectively. At September 30, 2016 and December 31, 2015 , our servicing portfolio of residential mortgage loans sold included 4,954 and 168 loans, respectively, with an outstanding principal balance of $1.3 billion and $39.0 million , respectively. In connection with the servicing of these loans, we maintain escrow funds for taxes and insurance in the name of investors, as well as collections in transit to investors. These escrow funds are segregated and held in separate non-interest-bearing accounts at the Bank. These deposits, included in total non-interest-bearing deposits on the consolidated balance sheets, were $18.5 million at September 30, 2016 and $240,000 at December 31, 2015 . As of September 30, 2016 and December 31, 2015 , management used the following assumptions to determine the fair value of MSRs: September 30, 2016 December 31, 2015 Average discount rates 10.09 % 9.76 % Expected prepayment speeds 11.18 % 9.66 % Weighted average life, in years 6.5 7.3 In conjunction with the sale and securitization of loans held for sale, we may be exposed to liability resulting from recourse agreements and repurchase agreements. If it is determined subsequent to our sale of a loan that the loan sold is in breach of the representations or warranties made in the applicable sale agreement, we may have an obligation to either (a) repurchase the loan for the unpaid principal balance, accrued interest and related advances, (b) indemnify the purchaser against any loss it suffers or (c) make the purchaser whole for the economic benefits of the loan. During the nine months ended September 30, 2016 , we originated or purchased and sold approximately $1.4 billion of mortgage loans. Our repurchase, indemnification and make whole obligations vary based upon the terms of the applicable agreements, the nature of the asserted breach and the status of the mortgage loan at the time a claim is made. We establish reserves for estimated losses of this nature inherent in the origination of mortgage loans by estimating the losses inherent in the population of all loans sold based on trends in claims and actual loss severities experienced. The reserve will include accruals for probable contingent losses in addition to those identified in the pipeline of claims received. The estimation process is designed to include amounts based on any actual losses experienced from actual repurchase activity. Because the MCA business commenced in late 2015, we have no historical data to support the establishment of a reserve. The baseline for the repurchase reserve uses historical loss factors obtained from industry data that are applied to loan pools originated and sold from September 2015 through September 30, 2016 . The historical industry data loss factors and experienced losses are accumulated for each sale vintage (year loan was sold) and applied to more recent sale vintages to estimate inherent losses not yet realized. Our estimated exposure related to these loans was $621,000 at September 30, 2016 and is recorded in other liabilities in the consolidated balance sheets. We had no losses due to repurchase, indemnification or make-whole obligations during the nine months ended September 30, 2016 as it relates to our MCA program.

FINANCIAL INSTRUMENTS WITH OFF-

FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK	9 Months Ended
	Sep. 30, 2016
Risks and Uncertainties [Abstract]
FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK	FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK The Bank is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit that involve varying degrees of credit risk in excess of the amount recognized in the consolidated balance sheets. The Bank’s exposure to credit loss in the event of non-performance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual amount of these instruments. The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The amount of collateral obtained, if deemed necessary, is based on management’s credit evaluation of the borrower. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Bank evaluates each customer’s credit-worthiness on a case-by-case basis. Standby letters of credit are conditional commitments issued by the Bank to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The table below summarizes our off-balance sheet financial instruments whose contract amounts represented credit risk (in thousands): September 30, 2016 December 31, 2015 Commitments to extend credit $ 5,604,322 $ 5,542,363 Standby letters of credit 179,447 182,219

REGULATORY MATTERS

REGULATORY MATTERS	9 Months Ended
	Sep. 30, 2015
Regulatory Capital Requirements [Abstract]
REGULATORY MATTERS	REGULATORY MATTERS The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory (and possibly additional discretionary) actions by regulators that, if undertaken, could have a direct material effect on the Company’s and the Bank’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of the Company’s and the Bank’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The Company’s and the Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. The Basel III regulatory capital framework applicable to the Company and the Bank (the "Basel III Capital Rules") specifies, among other things, (i) a "Common Equity Tier 1" ("CET1") capital measure, (ii) a Tier 1 capital measure consisting of CET1 and "Additional Tier 1 Capital" instruments meeting specified requirements, (iii) capital conservation buffers with respect to each of the CET1, Tier 1 risk-based and total risk-based capital ratios providing for capital levels that exceed the minimum risk-based capital adequacy requirements and (iv) a Tier 1 leverage ratio requirement of 5.0%. In order to be well capitalized under the Basel III Capital Rules, our Bank must maintain a CET1 capital ratio, Tier 1 capital ratio and total capital ratio of greater than or equal to 6.5%, 8.0% and 10.0%, respectively. The capital conservation buffers required by the Basel III Capital Rules are subject to a three year phase-in period that began on January 1, 2016 and will be fully phased-in on January 1, 2019 at 2.5%. A financial institution with a conservation buffer of less than the required amount will be subject to limitations on capital distributions, including dividend payments and stock repurchases and executive bonus payments. 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, 2016 , that the Company and the Bank met all capital adequacy requirements to which they are subject. Financial institutions are categorized as well capitalized or adequately capitalized, based on minimum total risk-based capital, Tier 1 risk-based capital, CET1 and Tier 1 leverage ratios. As shown in the table below, the Company’s capital ratios exceeded the regulatory definition of adequately capitalized as of September 30, 2016 , and December 31, 2015 . 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, December 31, Company Risk-based capital: CET1 7.55 % 7.47 % Tier 1 capital 8.80 % 8.81 % Total capital 11.09 % 11.05 % Tier 1 leverage 8.38 % 8.92 % 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, 2016 , our total mortgage finance loans were $5.0 billion compared to the average for the quarter ended September 30, 2016 of $4.7 billion . As CET1, Tier 1 and total capital ratios are calculated using quarter-end risk-weighted assets and our mortgage finance loans are 100% risk-weighted, the quarter-end fluctuation in these balances can significantly impact our reported ratios. We manage capital allocated to mortgage finance loans based on changing trends in average balances, as well as the inherent risk associated with the assets which implies a risk weight that is significantly different than the regulatory risk weight, and do not believe that the quarter-end balance is representative of risk characteristics that would justify higher capital allocations. However, we continue to monitor our capital allocation to confirm that all capital levels remain above well-capitalized levels. Dividends that may be paid by subsidiary banks are routinely restricted by various regulatory authorities. The amount that can be paid in any calendar year without prior approval of the Bank’s regulatory agencies cannot exceed the lesser of the net profits (as defined) for that year plus the net profits for the preceding two calendar years, or retained earnings. The Basel III Capital Rules further limit the amount of dividends that may be paid by our Bank. No dividends were declared or paid on common stock during the nine months ended September 30, 2016 or 2015 .

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	9 Months Ended
	Sep. 30, 2016
Compensation Related Costs [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION We have stock-based compensation plans under which equity-based compensation grants are made by the board of directors, or its designated committee. Grants are subject to vesting requirements. Under the plans, we may grant, among other things, nonqualified stock options, incentive stock options, restricted stock units ("RSUs"), stock appreciation rights ("SARs"), cash-based performance units or any combination thereof. Plans include grants for employees and directors. There are 2,550,000 total shares authorized under the plans. The fair value of our 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 valuation 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 employee stock options. Stock-based compensation consists of SARs, RSUs and cash-based performance units granted from 2010 through September 30, 2016 . Three months ended September 30, Nine months ended September 30, (in thousands) 2016 2015 2016 2015 Stock- based compensation expense recognized: SARs $ 74 $ 85 $ 233 $ 282 RSUs 1,149 1,140 3,233 3,046 Cash-based performance units 1,227 1,420 2,709 5,958 Total compensation expense recognized $ 2,450 $ 2,645 $ 6,175 $ 9,286 September 30, 2016 (in thousands) SARs and RSUs Unrecognized compensation expense related to unvested awards $ 17,378 Weighted average period over which expense is expected to be recognized, in years 3.3

FAIR VALUE DISCLOSURES

FAIR VALUE DISCLOSURES	9 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
FAIR VALUE DISCLOSURES	FAIR VALUE DISCLOSURES ASC 820, Fair Value Measurements and Disclosures (“ASC 820”), defines fair value, establishes a framework for measuring fair value under GAAP and requires enhanced disclosures about fair value measurements. Fair value is defined under ASC 820 as the price that would be received for an asset or paid to transfer a liability (an exit price) in the principal market for the asset or liability in an orderly transaction between market participants on the measurement date. We determine the fair market values of our assets and liabilities measured at fair value on a recurring and nonrecurring basis using the fair value hierarchy as prescribed in ASC 820. The standard describes three levels of inputs that may be used to measure fair value as provided below. Level 1 Quoted prices in active markets for identical assets or liabilities. This category includes the assets and liabilities related to our non-qualified deferred compensation plan where values are based on quoted market prices for identical equity securities in an active market. Level 2 Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 assets include U.S. government and agency mortgage-backed debt securities, municipal bonds, and Community Reinvestment Act funds. This category 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 also includes impaired loans, MSRs 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, 2016 and December 31, 2015 are as follows (in thousands): Fair Value Measurements Using September 30, 2016 Level 1 Level 2 Level 3 Available-for-sale securities:(1) Residential mortgage-backed securities $ — $ 17,146 $ — Municipals — 566 — Equity securities(2) 1,300 7,344 — Loans held for sale (3) — 648,684 — Loans held for investment(4) (6) — — 36,449 OREO(5) (6) — — 19,009 Derivative assets(7) — 58,158 — Derivative liabilities(7) — 60,548 — Non-qualified deferred compensation plan liabilities (8) 1,300 — — December 31, 2015 Available-for-sale securities:(1) Residential mortgage-backed securities $ — $ 21,901 $ — Municipals — 831 — Equity securities(2) — 7,260 — Loans held for sale(3) — 86,075 — Loans(4) (6) — — 41,420 OREO(5) (6) — — 278 Derivative assets(7) — 35,292 — Derivative liabilities(7) — 35,420 — (1) Securities are measured at fair value on a recurring basis, generally monthly. (2) Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan. (3) Loans held for sale are measured at fair value on a recurring basis, generally monthly. (4) Includes impaired loans that have been measured for impairment at the fair value of the loan’s collateral. (5) OREO is transferred from loans to OREO at fair value less selling costs. (6) Loans held for investment and OREO are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions. (7) Derivative assets and liabilities are measured at fair value on a recurring basis, generally quarterly. (8) Non-qualified deferred compensation plan liabilities represent the fair value of the obligation to the employee, which corresponds to the fair value of the invested assets, and are measured at fair value on a recurring basis, generally monthly. Level 3 Valuations Financial instruments are considered Level 3 when their values are determined using pricing models, discounted cash flow methodologies or similar techniques and at least one significant model assumption or input is unobservable. Level 3 financial instruments also include those for which the determination of fair value requires significant management judgment or estimation. Currently, we measure the fair value for certain loans and OREO on a nonrecurring basis as described below. Loans held for investment During the nine months ended September 30, 2016 and the year ended December 31, 2015 , 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 $36.4 million reported fair value above includes impaired loans held for investment at September 30, 2016 with a carrying value of $61.7 million that were reduced by specific allowance allocations totaling $25.3 million based on collateral valuations utilizing Level 3 valuation inputs. The $41.4 million reported fair value above includes impaired loans held for investment at December 31, 2015 with a carrying value of $49.7 million that were reduced by specific valuation allowance allocations totaling $8.3 million based on collateral valuations utilizing Level 3 valuation inputs. Fair values were based on third party appraisals. OREO Certain foreclosed assets, upon initial recognition, are recorded at fair value less estimated selling costs. At September 30, 2016 and December 31, 2015 , OREO had a carrying value of $19.0 million and $278,000 , 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 GAAP 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, 2016 December 31, 2015 Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Cash and cash equivalents $ 3,588,419 $ 3,588,419 $ 1,790,870 $ 1,790,870 Securities, available-for-sale 26,356 26,356 29,992 29,992 Loans held for sale 648,684 648,684 86,075 86,075 Loans held for investment, net 17,443,117 17,445,311 16,570,839 16,576,297 Derivative assets 58,158 58,158 35,292 35,292 Deposits 18,145,123 18,145,619 15,084,619 15,085,080 Federal funds purchased 73,768 73,768 74,164 74,164 Customer repurchase agreements 7,652 7,652 68,887 68,887 Other borrowings 1,670,000 1,670,000 1,500,000 1,500,000 Subordinated notes 280,954 284,230 280,682 285,773 Trust preferred subordinated debentures 113,406 113,406 113,406 113,406 Derivative liabilities 60,548 60,548 35,420 35,420 The following methods and assumptions were used by the Company in estimating its fair value disclosures for financial instruments: Cash and cash equivalents The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents approximate their fair value, and these financial instruments are characterized as Level 1 assets in the fair value hierarchy. Securities, available-for-sale Within the securities available-for-sale portfolio, we hold equity securities related to our non-qualified deferred compensation plan which are valued using quoted market prices for identical equity securities in an active market. These financial instruments are classified as Level 1 assets in the fair value hierarchy. The fair value of the remaining investment portfolio is based on prices obtained from independent pricing services which are based on quoted market prices for the same or similar securities, and these financial instruments are characterized as Level 2 assets in the fair value hierarchy. We have obtained documentation from the primary pricing service we use about their processes and controls over pricing. In addition, on a quarterly basis we independently verify the prices that we receive from the service provider using two additional independent pricing sources. Any significant differences are investigated and resolved. Loans held for sale Fair value for loans held for sale valued under the fair value option is derived from quoted market prices for similar loans, and these financial instruments are characterized as Level 2 assets in the fair value hierarchy. Loans held for investment, net Loans held for investment are characterized as Level 3 assets in the fair value hierarchy. For variable-rate loans held for investment that reprice frequently with no significant change in credit risk, fair values are generally based on carrying values. The fair value for all other loans held for investment is estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. The carrying amount of accrued interest approximates its fair value. Derivatives The estimated fair value of the interest rate swaps and caps is obtained from independent pricing services based on quoted market prices for similar derivative contracts and these financial instruments are characterized as Level 2 assets in the fair value hierarchy. On a quarterly basis, we independently verify the fair value using an additional independent pricing source. Any significant differences are investigated and resolved. The derivative instruments related to the loans held for sale portfolio include loan purchase commitments and forward sales commitments. Loan purchase commitments are valued based upon the fair value of the underlying mortgage loans to be purchased, which is based on observable market data for similar loans. Forward sales commitments are valued based upon the quoted market prices from brokers. As such, these loan purchase commitments and forward sales commitments are classified as Level 2 assets 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 certificates of deposit fair values are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities. Federal funds purchased, customer repurchase agreements, other borrowings, subordinated notes and trust preferred subordinated debentures The carrying value reported in the consolidated balance sheets for Federal funds purchased, customer repurchase agreements and other short-term, floating rate borrowings approximates their fair value, and these financial instruments are characterized as Level 2 assets in the fair value hierarchy. The fair value of any fixed rate short-term borrowings and trust preferred subordinated debentures are estimated using a discounted cash flow calculation that applies interest rates currently being offered on similar borrowings, and these financial instruments are characterized as Level 3 liabilities in the fair value hierarchy. The subordinated notes are publicly, though infrequently, traded and are valued based on market prices, and are characterized as Level 2 liabilities in the fair value hierarchy.

DERIVATIVE FINANCIAL INSTRUMENT

DERIVATIVE FINANCIAL INSTRUMENTS	9 Months Ended
	Sep. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS	DERIVATIVE FINANCIAL INSTRUMENTS The fair value of derivative positions outstanding is included in accrued interest receivable and other assets and other liabilities in the accompanying consolidated balance sheets on a net basis when a right of offset exists, based on transactions with a single counterparty that are subject to a legally enforceable master netting agreement. During the three and nine months ended September 30, 2016 and 2015 , we entered into certain interest rate derivative positions that were not designated as hedging instruments. These derivative positions relate to transactions in which we enter into an interest rate swap, cap and/or floor with a customer while at the same time entering into an offsetting interest rate swap, cap and/or floor with another financial institution. In connection with each swap transaction, we agree to pay interest to the customer on a notional amount at a variable interest rate and receive interest from the customer on a similar notional amount at a fixed interest rate. At the same time, we agree to pay another financial institution the same fixed interest rate on the same notional amount and receive the same variable interest rate on the same notional amount. The transaction allows our customer to effectively convert a variable rate loan to a fixed rate. Because we act as an intermediary for our customer, changes in the fair value of the underlying derivative contracts substantially offset each other and do not have a material impact on our results of operations. During the three and nine months ended September 30, 2016 , we entered into loan purchase commitment contracts with mortgage originators to purchase residential mortgage loans at a future date, as well as forward sales commitment contracts to sell residential mortgage loans at a future date. The notional amounts and estimated fair values of interest rate derivative positions outstanding at September 30, 2016 and December 31, 2015 are presented in the following tables (in thousands): September 30, 2016 December 31, 2015 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 $ 1,070,684 $ — $ 56,503 $ 976,389 $ — $ 33,851 Commercial loan/lease interest rate caps 211,854 230 — 194,304 1,441 — Customer counterparties: Commercial loan/lease interest rate swaps 1,070,684 56,503 — 976,389 33,851 — Commercial loan/lease interest rate caps 211,854 — 230 194,304 — 1,441 Economic hedging interest rate derivatives: Loan purchase commitments 310,534 1,425 — 62,835 — 109 Forward sales commitments 941,963 — 3,815 143,200 — 19 Gross derivatives 58,158 60,548 35,292 35,420 Offsetting derivative assets/liabilities — — — — Net derivatives included in the consolidated balance sheets $ 58,158 $ 60,548 $ 35,292 $ 35,420 The weighted average received and paid interest rates for interest rate swaps outstanding at September 30, 2016 and December 31, 2015 were as follows: September 30, 2016 December 31, 2015 Received Paid Received Paid Non-hedging interest rate swaps 3.00 % 4.61 % 2.96 % 4.72 % The weighted average strike rate for outstanding interest rate caps was 2.45% at September 30, 2016 and 2.34% at December 31, 2015 . Our credit exposure on derivative instruments is limited to the net favorable value and interest payments by each counterparty. In such cases collateral may be required from the counterparties involved if the net value of the derivative instruments exceed a nominal amount considered to be immaterial . Our credit exposure, net of any collateral pledged, was approximately $58.2 million at September 30, 2016 and approximately $35.3 million at December 31, 2015 , which primarily relates to Bank customers. Collateral levels are monitored and adjusted on a regular basis for changes in interest rate swap and cap values. At September 30, 2016 , we had $65.5 million in cash collateral pledged for these derivatives, of which $62.1 million was included in interest-bearing deposits and $3.4 million was included in accrued interest receivable and other assets. At December 31, 2015 , we had $37.1 million in cash collateral pledged for these derivatives, all of which was included in interest-bearing deposits.

NEW ACCOUNTING PRONOUNCEMENTS

NEW ACCOUNTING PRONOUNCEMENTS	9 Months Ended
	Sep. 30, 2016
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
NEW ACCOUNTING PRONOUNCEMENTS	NEW ACCOUNTING PRONOUNCEMENTS ASU 2016-15 "Statement of Cash Flows (Topic 230)" ("ASU 2016-15") is intended to reduce the diversity in practice around how certain transactions are classified within the statement of cash flows. ASU 2016-15 is effective for public companies for annual periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted with retrospective application. We are evaluating the impact adoption of ASU 2016-15 will have on our consolidated financial statements. ASU 2016-13 "Financial Instruments - Credit Losses (Topic 326)" ("ASU 2016-13") requires an entity to utilize a new impairment model known as the current expected credit loss ("CECL") model to estimate its lifetime "expected credit loss" and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. ASU 2016-13 also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. ASU 2016-13 is effective for public companies for annual periods beginning after December 15, 2019, including interim periods within those fiscal years. Entities will apply the standard's provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. We are in the process of evaluating the impact adoption of ASU 2016-13 will have on our consolidated financial statements and disclosures. ASU 2016-09 "Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payments Accounting" ("ASU 2016-09") amended guidance with the intent to simplify accounting for share-based payment transaction, including the income tax consequences and classification of awards. Among other items, the update requires excess tax benefits and deficiencies to be recognized as a component of income taxes within the income statement rather than other comprehensive income as required in current guidance. ASU 2016-09 is effective for public companies for annual periods beginning after December 31, 2016 and is not expected to have a significant impact on our financial statements. ASU 2016-02 " Leases (Topic 842) " ("ASU 2016-02") requires that lessees and lessors recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing arrangements. ASU 2016-02 is effective for public companies for annual periods beginning after December 15, 2018, including interim periods within those fiscal years. We have not yet selected a transition method as we are in the process of determining the effect of the standard on our financial statements and disclosures. ASU 2015-03 " Interest - Imputation of Interest (Subtopic 835-30) - Simplifying the Presentation of Debt Issuance Costs " ("ASU 2015-03") requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. Prior to the issuance of ASU 2015-03, debt issuance costs were required to be presented as deferred charge assets, separate from the related debt liability. ASU 2015-03 does not change the recognition and measurement requirements for debt issuance costs. We adopted ASU 2015-03 effective January 1, 2016 and applied its provisions retrospectively. The adoption of ASU 2015-03 resulted in the reclassification of $5.0 million and $5.3 million of unamortized debt issuance costs related to our subordinated notes from other assets to subordinated notes within the consolidated balance sheets as of September 30, 2016 and December 31, 2015 , respectively. Other than this reclassification, the adoption of ASU 2015-03 did not have a material impact on our consolidated financial statements. ASU 2014-09 "Revenue from Contracts with Customers (Topic 606)" ("ASU 2014-09") implements a common revenue standard that clarifies the principles for recognizing revenue. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 establishes a five-step model which entities must follow to recognize revenue and removes inconsistencies and weaknesses in existing guidance. ASU 2014-09 was originally going to be effective for annual and interim periods beginning after December 15, 2016; however, the FASB issued ASU 2015-14 - "Revenue from Contracts with Customers (Topic 606) - Deferral of the Effective Date" which deferred the effective date of ASU 2014-09 by one year to annual and interim periods beginning after December 15, 2017. We are in the process of evaluating the impact adoption of ASU 2014-09 will have on our consolidated financial statements and disclosures.

Summary of Significant Accounti

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Nature of Business	Organization and Nature of Business Texas Capital Bancshares, Inc. (the “Company”), a Delaware corporation, was incorporated in November 1996 and commenced banking operations in December 1998. The consolidated financial statements of the Company include the accounts of Texas Capital Bancshares, Inc. and its wholly owned subsidiary, Texas Capital Bank, National Association (the “Bank”). We serve the needs of commercial businesses and successful professionals and entrepreneurs located in Texas as well as operate several lines of business serving a regional and national clientèle of commercial borrowers. We are primarily a secured lender, with our greatest concentration of loans in Texas.
Basis of Presentation	Basis of Presentation Our accounting and reporting policies conform to accounting principles generally accepted in the United States (“GAAP”) and to generally accepted practices within the banking industry. Certain prior period balances have been reclassified to conform to the current period presentation. 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, 2015 , included in our Annual Report on Form 10-K filed with the SEC on February 18, 2016 (the “2015 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 certain assets and liabilities and the status of contingencies are particularly susceptible to significant change in the near term.

EARNINGS PER COMMON SHARE (Tabl

EARNINGS PER COMMON SHARE (Tables)	9 Months Ended
	Sep. 30, 2016
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 Nine months ended 2016 2015 2016 2015 Numerator: Net income $ 42,725 $ 37,114 $ 106,733 $ 110,101 Preferred stock dividends 2,438 2,438 7,313 7,313 Net income available to common stockholders 40,287 34,676 $ 99,420 102,788 Denominator: Denominator for basic earnings per share— weighted average shares 45,980,517 45,827,902 45,931,357 45,792,470 Effect of employee stock-based awards (1) 118,885 216,499 119,021 216,448 Effect of warrants to purchase common stock 410,281 426,989 382,578 416,574 Denominator for dilutive earnings per share—adjusted weighted average shares and assumed conversions 46,509,683 46,471,390 46,432,956 46,425,492 Basic earnings per common share $ 0.88 $ 0.76 $ 2.16 $ 2.24 Diluted earnings per common share $ 0.87 $ 0.75 $ 2.14 $ 2.21 (1) Stock options, SARs and RSUs outstanding of 319,476 at September 30, 2016 and 101,100 at September 30, 2015 have not been included in diluted earnings per share because to do so would have been anti-dilutive for the periods presented.

SECURITIES (Tables)

SECURITIES (Tables)	9 Months Ended
	Sep. 30, 2016
Available-for-sale Securities [Abstract]
Schedule of summary of securities	At September 30, 2016 , our net unrealized gain on the available-for-sale securities portfolio was $985,000 compared to $1.1 million at December 31, 2015 . As a percent of outstanding balances, the unrealized gain was 3.88% and 3.83% at September 30, 2016 , and December 31, 2015 , respectively. The increase in the unrealized gain percentage at September 30, 2016 results from the reduction in the portfolio balance due to paydowns and maturities.
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, 2016 Less Than One Year After One Through Five Years After Five Through Ten Years After Ten Years Total Available-for-sale: Residential mortgage-backed securities: (1) Amortized cost $ 50 $ 2,565 $ 3,418 $ 9,974 $ 16,007 Estimated fair value 50 2,649 3,856 10,591 17,146 Weighted average yield (3) 5.50 % 4.70 % 5.54 % 2.69 % 3.63 % Municipals: (2) Amortized cost 275 289 — — 564 Estimated fair value 275 291 — — 566 Weighted average yield (3) 5.61 % 5.76 % — — 5.69 % Equity securities: (4) Amortized cost 8,800 — — — 8,800 Estimated fair value 8,644 — — — 8,644 Total available-for-sale securities: Amortized cost $ 25,371 Estimated fair value $ 26,356 December 31, 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 $ 214 $ 4,655 $ 4,265 $ 11,402 $ 20,536 Estimated fair value 217 4,837 4,747 12,100 21,901 Weighted average yield (3) 5.62 % 4.71 % 5.54 % 2.53 % 3.68 % 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 7,260 — — — 7,260 Total available-for-sale securities: Amortized cost $ 28,886 Estimated fair value $ 29,992 (1) Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties. (2) Yields have been adjusted to a tax equivalent basis assuming a 35% federal tax rate. (3) Yields are calculated based on amortized cost. (4) These equity securities do not have a stated maturity.
Schedule of investment securities that have been in a continuous unrealized loss position for less or more than 12 months	The following table discloses, as of September 30, 2016 and December 31, 2015 , 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, 2016 Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Equity securities $ — $ — $ 6,295 $ (205 ) $ 6,295 $ (205 ) December 31, 2015 Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Equity securities $ — $ — $ 6,227 $ (273 ) $ 6,227 $ (273 )

LOANS AND ALLOWANCE FOR LOAN 23

LOANS AND ALLOWANCE FOR LOAN LOSSES (Tables)	9 Months Ended
	Sep. 30, 2016
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Schedule of loans held for investments	At September 30, 2016 and December 31, 2015 , loans held for investment were as follows (in thousands): September 30, December 31, Commercial $ 7,053,979 $ 6,672,631 Mortgage finance 4,961,159 4,966,276 Construction 2,150,453 1,851,717 Real estate 3,391,831 3,139,197 Consumer 27,554 25,323 Leases 96,878 113,996 Gross loans held for investment 17,681,854 16,769,140 Deferred income (net of direct origination costs) (58,301 ) (57,190 ) Allowance for loan losses (180,436 ) (141,111 ) Total loans held for investment $ 17,443,117 $ 16,570,839
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, 2016 and December 31, 2015 (in thousands): September 30, 2016 Commercial Mortgage Finance Construction Real Estate Consumer Leases Total Grade: Pass $ 6,605,475 $ 4,961,159 $ 2,130,826 $ 3,348,510 $ 27,210 $ 92,875 $ 17,166,055 Special mention 128,785 — 7,361 34,581 — 37 170,764 Substandard-accruing 153,386 — 12,107 6,319 144 3,966 175,922 Non-accrual 166,333 — 159 2,421 200 — 169,113 Total loans held for investment $ 7,053,979 $ 4,961,159 $ 2,150,453 $ 3,391,831 $ 27,554 $ 96,878 $ 17,681,854 December 31, 2015 Commercial Mortgage Finance Construction Real Estate Consumer Leases Total Grade: Pass $ 6,375,332 $ 4,966,276 $ 1,821,678 $ 3,085,463 $ 25,093 $ 103,560 $ 16,377,402 Special mention 111,911 — 13,090 30,585 3 334 155,923 Substandard-accruing 46,731 — 281 3,837 227 4,951 56,027 Non-accrual 138,657 — 16,668 19,312 — 5,151 179,788 Total loans held for investment $ 6,672,631 $ 4,966,276 $ 1,851,717 $ 3,139,197 $ 25,323 $ 113,996 $ 16,769,140
Schedule of activity in the reserve for loan losses by portfolio segment	The following table details activity in the allowance for loan losses by portfolio segment for the nine months ended September 30, 2016 and September 30, 2015 . Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. September 30, 2016 (in thousands) Commercial Mortgage Finance Construction Real Estate Consumer Leases Additional Qualitative Reserve Total Beginning balance $ 112,446 $ — $ 6,836 $ 13,381 $ 338 $ 3,931 $ 4,179 $ 141,111 Provision for loan losses 65,446 — 1,607 1,981 (23 ) (2,646 ) (226 ) 66,139 Charge-offs 34,232 — — 528 40 — — 34,800 Recoveries 7,829 — 34 36 16 71 — 7,986 Net charge-offs (recoveries) 26,403 — (34 ) 492 24 (71 ) — 26,814 Ending balance $ 151,489 $ — $ 8,477 $ 14,870 $ 291 $ 1,356 $ 3,953 $ 180,436 Period end amount allocated to: Loans individually evaluated for impairment $ 42,674 $ — $ 24 $ 136 $ 30 $ — $ — $ 42,864 Loans collectively evaluated for impairment 108,815 — 8,453 14,734 261 1,356 3,953 137,572 Ending balance $ 151,489 $ — $ 8,477 $ 14,870 $ 291 $ 1,356 $ 3,953 $ 180,436 September 30, 2015 (in thousands) Commercial Mortgage Finance Construction Real Estate Consumer Leases Additional Qualitative Reserve 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
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, 2016 , December 31, 2015 and September 30, 2015 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, 2016 Commercial Mortgage Finance Construction Real Estate Consumer Leases Total Loans individually evaluated for impairment $ 168,014 $ — $ 159 $ 3,787 $ 200 $ — $ 172,160 Loans collectively evaluated for impairment 6,885,965 4,961,159 2,150,294 3,388,044 27,354 96,878 17,509,694 Total $ 7,053,979 $ 4,961,159 $ 2,150,453 $ 3,391,831 $ 27,554 $ 96,878 $ 17,681,854 December 31, 2015 Commercial Mortgage Finance Construction Real Estate Consumer Leases Total Loans individually evaluated for impairment $ 140,479 $ — $ 16,668 $ 21,042 $ — $ 5,151 $ 183,340 Loans collectively evaluated for impairment 6,532,152 4,966,276 1,835,049 3,118,155 25,323 108,845 16,585,800 Total $ 6,672,631 $ 4,966,276 $ 1,851,717 $ 3,139,197 $ 25,323 $ 113,996 $ 16,769,140 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
Schedule of impaired loans, by portfolio class	The following tables detail our impaired loans, by portfolio class, as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial Business loans $ 15,615 $ 18,839 $ — $ 10,359 $ — Energy 61,339 71,100 — 53,274 — Construction Market risk — — — 3,704 — Real estate Market risk — — — — — Commercial 2,087 2,087 — 5,282 28 Secured by 1-4 family — — — — — Consumer — — — — — Leases — — — 537 — Total impaired loans with no allowance recorded $ 79,041 $ 92,026 $ — $ 73,156 $ 28 With an allowance recorded: Commercial Business loans $ 23,079 $ 23,154 $ 9,516 $ 22,207 $ — Energy 67,981 72,535 33,158 74,770 18 Construction Market risk 159 159 24 18 — Real estate Market risk 1,366 1,366 20 3,548 — Commercial — — — — — Secured by 1-4 family 334 334 116 469 — Consumer 200 200 30 22 — Leases — — — 722 — Total impaired loans with an allowance recorded $ 93,119 $ 97,748 $ 42,864 $ 101,756 $ 18 Combined: Commercial Business loans $ 38,694 $ 41,993 $ 9,516 $ 32,566 $ — Energy 129,320 143,635 33,158 128,044 18 Construction Market risk 159 159 24 3,722 — Real estate Market risk 1,366 1,366 20 3,548 — Commercial 2,087 2,087 — 5,282 28 Secured by 1-4 family 334 334 116 469 — Consumer 200 200 30 22 — Leases — — — 1,259 — Total impaired loans $ 172,160 $ 189,774 $ 42,864 $ 174,912 $ 46 December 31, 2015 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial Business loans $ 11,097 $ 13,529 $ — $ 17,311 $ — Energy 37,968 37,968 — 21,791 36 Construction Market risk 16,668 16,668 — 9,764 — Real estate Market risk — — — 3,352 — Commercial 15,353 15,353 — 4,364 24 Secured by 1-4 family — — — — — Consumer — — — — — Leases 2,417 2,417 — 3,233 — Total impaired loans with no allowance recorded $ 83,503 $ 85,935 $ — $ 59,815 $ 60 With an allowance recorded: Commercial Business loans $ 20,983 $ 25,300 $ 5,737 $ 31,131 $ — Energy 70,431 70,431 14,103 6,641 — Construction Market risk — — — — — Real estate Market risk 5,335 5,335 1,066 2,558 — Commercial — — — 306 — Secured by 1-4 family 354 354 125 1,580 — Consumer — — — 10 — Leases 2,734 2,734 2,436 302 — Total impaired loans with an allowance recorded $ 99,837 $ 104,154 $ 23,467 $ 42,528 $ — Combined: Commercial Business loans $ 32,080 $ 38,829 $ 5,737 $ 48,442 $ — Energy 108,399 108,399 14,103 28,432 36 Construction Market risk 16,668 16,668 — 9,764 — Real estate Market risk 5,335 5,335 1,066 5,910 — Commercial 15,353 15,353 — 4,670 24 Secured by 1-4 family 354 354 125 1,580 — Consumer — — — 10 — Leases 5,151 5,151 2,436 3,535 — Total impaired loans $ 183,340 $ 190,089 $ 23,467 $ 102,343 $ 60
Schedule of an age analysis of accruing past due loans	The table below provides an age analysis of our loans held for investment as of September 30, 2016 (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 $ 37,993 $ 14,827 $ 9,593 $ 62,413 $ 37,013 $ 6,012,367 $ 6,111,793 Energy 1,179 — — 1,179 129,320 811,687 942,186 Mortgage finance loans — — — — — 4,961,159 4,961,159 Construction Market risk 14,015 334 — 14,349 159 2,125,683 2,140,191 Secured by 1-4 family 1,063 — — 1,063 — 9,199 10,262 Real estate Market risk — 639 — 639 — 2,548,337 2,548,976 Commercial — — — — 2,087 654,029 656,116 Secured by 1-4 family 382 47 107 536 334 185,869 186,739 Consumer — 7 6 13 200 27,341 27,554 Leases 41 — — 41 — 96,837 96,878 Total loans held for investment $ 54,673 $ 15,854 $ 9,706 $ 80,233 $ 169,113 $ 17,432,508 $ 17,681,854 (1) Loans past due 90 days and still accruing includes premium finance loans of $7.1 million . These loans are generally secured by obligations of insurance carriers to refund premiums on canceled insurance policies. The refund of premiums from the insurance carriers can take 180 days or longer from the cancellation date.
Schedule of loans that have been restructured	The following table provides information on how restructured loans were modified during the nine months ended September 30, 2016 and 2015 (in thousands): Nine months ended September 30, 2016 2015 Extended maturity $ — $ — Adjusted payment schedule 12,647 — Combination of maturity extension and payment schedule adjustment 642 15,438 Total $ 13,289 $ 15,438 The following tables summarize, for the nine months ended September 30, 2016 and 2015 , loans that were restructured during 2016 and 2015 (in thousands): September 30, 2016 Number of Restructured Loans Pre-Restructuring Outstanding Recorded Investment Post-Restructuring Outstanding Recorded Investment Energy loans 2 $ 14,235 $ 13,289 Commercial business loans — $ — $ — Real estate - market risk — $ — $ — Total new restructured loans in 2016 2 $ 14,235 $ 13,289 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

OREO AND VALUATION ALLOWANCE 24

OREO AND VALUATION ALLOWANCE FOR LOSSES ON OREO (Tables)	9 Months Ended
	Sep. 30, 2016
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, 2016 2015 2016 2015 Beginning balance $ 18,727 $ 609 $ 278 $ 568 Additions 282 — 18,822 1,177 Sales — (422 ) (91 ) (1,558 ) Valuation allowance for OREO — — — — Direct write-downs — — — — Ending balance $ 19,009 $ 187 $ 19,009 $ 187 The addition to OREO during the nine months ended September 30, 2016 relates to the foreclosure of three commercial properties.

CERTAIN TRANSFERS OF FINANCIA25

CERTAIN TRANSFERS OF FINANCIAL ASSETS (Tables)	9 Months Ended
	Sep. 30, 2016
Transfers and Servicing [Abstract]
Schedule of Loans Held for Sale	The table below presents the unpaid principal balance of loans held for sale and related fair values at September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Unpaid principal balance $ 620,207 $ 82,853 Fair value 648,684 86,075 Fair value over/(under) unpaid principal balance $ 28,477 $ 3,222
Servicing Asset at Amortized Cost	We generally retain the right to service the loans sold, creating mortgage servicing rights ("MSRs") which are recorded as assets on our balance sheet. A summary of MSR activities for the nine months ended September 30, 2016 is as follows (in thousands): Servicing asset: Balance, beginning of year(1) $ 423 Capitalized servicing rights 16,344 Amortization (891 ) Balance, end of period $ 15,876 Valuation allowance: Balance, beginning of year $ — Increase in valuation allowance 414 Balance, end of period $ 414 Servicing asset, net(1) $ 15,462 Fair value $ 15,970
Schedule of Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities	September 30, 2016 and December 31, 2015 , management used the following assumptions to determine the fair value of MSRs: September 30, 2016 December 31, 2015 Average discount rates 10.09 % 9.76 % Expected prepayment speeds 11.18 % 9.66 % Weighted average life, in years 6.5 7.3

FINANCIAL INSTRUMENTS WITH OF26

FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK (Tables)	9 Months Ended
	Sep. 30, 2016
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, 2016 December 31, 2015 Commitments to extend credit $ 5,604,322 $ 5,542,363 Standby letters of credit 179,447 182,219

REGULATORY MATTERS (Tables)

REGULATORY MATTERS (Tables)	9 Months Ended
	Sep. 30, 2016
Regulatory Capital Requirements [Abstract]
Schedule of capital ratios	The table below summarizes our capital ratios: September 30, December 31, Company Risk-based capital: CET1 7.55 % 7.47 % Tier 1 capital 8.80 % 8.81 % Total capital 11.09 % 11.05 % Tier 1 leverage 8.38 % 8.92 %

STOCK-BASED COMPENSATION (Table

STOCK-BASED COMPENSATION (Tables)	9 Months Ended
	Sep. 30, 2016
Compensation Related Costs [Abstract]
Schedule of stock-based compensation costs	Stock-based compensation consists of SARs, RSUs and cash-based performance units granted from 2010 through September 30, 2016 . Three months ended September 30, Nine months ended September 30, (in thousands) 2016 2015 2016 2015 Stock- based compensation expense recognized: SARs $ 74 $ 85 $ 233 $ 282 RSUs 1,149 1,140 3,233 3,046 Cash-based performance units 1,227 1,420 2,709 5,958 Total compensation expense recognized $ 2,450 $ 2,645 $ 6,175 $ 9,286
Schedule of unrecognized compensation costs	September 30, 2016 (in thousands) SARs and RSUs Unrecognized compensation expense related to unvested awards $ 17,378 Weighted average period over which expense is expected to be recognized, in years 3.3

FAIR VALUE DISCLOSURES (Tables)

FAIR VALUE DISCLOSURES (Tables)	9 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value	Assets and liabilities measured at fair value at September 30, 2016 and December 31, 2015 are as follows (in thousands): Fair Value Measurements Using September 30, 2016 Level 1 Level 2 Level 3 Available-for-sale securities:(1) Residential mortgage-backed securities $ — $ 17,146 $ — Municipals — 566 — Equity securities(2) 1,300 7,344 — Loans held for sale (3) — 648,684 — Loans held for investment(4) (6) — — 36,449 OREO(5) (6) — — 19,009 Derivative assets(7) — 58,158 — Derivative liabilities(7) — 60,548 — Non-qualified deferred compensation plan liabilities (8) 1,300 — — December 31, 2015 Available-for-sale securities:(1) Residential mortgage-backed securities $ — $ 21,901 $ — Municipals — 831 — Equity securities(2) — 7,260 — Loans held for sale(3) — 86,075 — Loans(4) (6) — — 41,420 OREO(5) (6) — — 278 Derivative assets(7) — 35,292 — Derivative liabilities(7) — 35,420 — (1) Securities are measured at fair value on a recurring basis, generally monthly. (2) Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan. (3) Loans held for sale are measured at fair value on a recurring basis, generally monthly. (4) Includes impaired loans that have been measured for impairment at the fair value of the loan’s collateral. (5) OREO is transferred from loans to OREO at fair value less selling costs. (6) Loans held for investment and OREO are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions. (7) Derivative assets and liabilities are measured at fair value on a recurring basis, generally quarterly. (8) Non-qualified deferred compensation plan liabilities represent the fair value of the obligation to the employee, which corresponds to the fair value of the invested assets, and are measured at fair value on a recurring basis, generally monthly.
Summary of the carrying amounts and estimated fair values of financial instruments	A summary of the carrying amounts and estimated fair values of financial instruments is as follows (in thousands): September 30, 2016 December 31, 2015 Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Cash and cash equivalents $ 3,588,419 $ 3,588,419 $ 1,790,870 $ 1,790,870 Securities, available-for-sale 26,356 26,356 29,992 29,992 Loans held for sale 648,684 648,684 86,075 86,075 Loans held for investment, net 17,443,117 17,445,311 16,570,839 16,576,297 Derivative assets 58,158 58,158 35,292 35,292 Deposits 18,145,123 18,145,619 15,084,619 15,085,080 Federal funds purchased 73,768 73,768 74,164 74,164 Customer repurchase agreements 7,652 7,652 68,887 68,887 Other borrowings 1,670,000 1,670,000 1,500,000 1,500,000 Subordinated notes 280,954 284,230 280,682 285,773 Trust preferred subordinated debentures 113,406 113,406 113,406 113,406 Derivative liabilities 60,548 60,548 35,420 35,420

DERIVATIVE FINANCIAL INSTRUME30

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)	9 Months Ended
	Sep. 30, 2016
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, 2016 and December 31, 2015 are presented in the following tables (in thousands): September 30, 2016 December 31, 2015 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 $ 1,070,684 $ — $ 56,503 $ 976,389 $ — $ 33,851 Commercial loan/lease interest rate caps 211,854 230 — 194,304 1,441 — Customer counterparties: Commercial loan/lease interest rate swaps 1,070,684 56,503 — 976,389 33,851 — Commercial loan/lease interest rate caps 211,854 — 230 194,304 — 1,441 Economic hedging interest rate derivatives: Loan purchase commitments 310,534 1,425 — 62,835 — 109 Forward sales commitments 941,963 — 3,815 143,200 — 19 Gross derivatives 58,158 60,548 35,292 35,420 Offsetting derivative assets/liabilities — — — — Net derivatives included in the consolidated balance sheets $ 58,158 $ 60,548 $ 35,292 $ 35,420
Schedule of the weighted-average receive and pay interest rate swaps	The weighted average received and paid interest rates for interest rate swaps outstanding at September 30, 2016 and December 31, 2015 were as follows: September 30, 2016 December 31, 2015 Received Paid Received Paid Non-hedging interest rate swaps 3.00 % 4.61 % 2.96 % 4.72 %

EARNINGS PER COMMON SHARE (Deta

EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Numerator:
Net income		$ 42,725	$ 37,114	$ 106,733	$ 110,101
Preferred stock dividends		(2,438)	(2,438)	(7,313)	(7,313)
Net income available to common stockholders		$ 40,287	$ 34,676	$ 99,420	$ 102,788
Denominator:
Denominator for basic earnings per share— weighted average shares		45,980,517	45,827,902	45,931,357	45,792,470
Effect of employee stock-based awards	[1]	118,885	216,499	119,021	216,448
Effect of warrants to purchase common stock		410,281	426,989	382,578	416,574
Denominator for dilutive earnings per share—adjusted weighted average shares and assumed conversions		46,509,683	46,471,390	46,432,956	46,425,492
Basic earnings per common share (usd per share)		$ 0.88	$ 0.76	$ 2.16	$ 2.24
Diluted earnings per common share (usd per share)		$ 0.87	$ 0.75	$ 2.14	$ 2.21
Stock options, SARs and RSUs excluded from computation of diluted EPS				319,476	101,100
[1]	Stock options, SARs and RSUs outstanding of 319,476 at September 30, 2016 and 101,100 at September 30, 2015 have not been included in diluted earnings per share because to do so would have been anti-dilutive for the periods presented.

SECURITIES (Details)

SECURITIES (Details) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2016	Dec. 31, 2015
Available-for-sale Securities [Abstract]
Available-for-sale securities, net unrealized gains		$ 1,000	$ 1,100
Available for sale securities, net unrealized gain as percent of outstanding balances		3.88%	3.83%
Summary of Available-for-Sale Securities
Amortized Cost		$ 25,371	$ 28,886
Gross Unrealized Gains		1,190	1,379
Gross Unrealized Losses		(205)	(273)
Estimated Fair Value		26,356	29,992
Residential mortgage-backed securities
Summary of Available-for-Sale Securities
Amortized Cost	[1]	16,007	20,536
Gross Unrealized Gains		1,139	1,365
Gross Unrealized Losses		0	0
Estimated Fair Value	[1]	17,146	21,901
Municipals
Summary of Available-for-Sale Securities
Amortized Cost	[2]	564	828
Gross Unrealized Gains		2	3
Gross Unrealized Losses		0	0
Estimated Fair Value	[2]	566	831
Equity securities
Summary of Available-for-Sale Securities
Amortized Cost	[3],[4]	8,800	7,522
Gross Unrealized Gains	[3]	49	11
Gross Unrealized Losses	[3]	(205)	(273)
Estimated Fair Value	[3],[4]	$ 8,644	$ 7,260
[1]	Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.
[2]	Yields have been adjusted to a tax equivalent basis assuming a 35% federal tax rate.
[3]	Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.
[4]	These equity securities do not have a stated maturity.

SECURITIES (Details 1)

SECURITIES (Details 1) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2016	Dec. 31, 2015
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Total		$ 25,371	$ 28,886
Estimated Fair Value		$ 26,356	$ 29,992
Available-for-sale Securities, Other Disclosure Items
Federal tax rate		35.00%	35.00%
Available-for-sale securities pledged as collateral		$ 15,200
Residential mortgage-backed securities
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Less Than One Year	[1]	50	$ 214
Amortized cost, After One Through Five Years	[1]	2,565	4,655
Amortized cost, After Five Through Ten Years	[1]	3,418	4,265
Amortized cost, After Ten Years	[1]	9,974	11,402
Amortized cost, Total	[1]	16,007	20,536
Estimated fair value, Less Than One Year	[1]	50	217
Estimated fair value, After One Through Five Years	[1]	2,649	4,837
Estimated fair value, After Five Through Ten Years	[1]	3,856	4,747
Estimated fair value, After Ten Years	[1]	10,591	12,100
Estimated Fair Value	[1]	$ 17,146	$ 21,901
Weighted average yield, Less Than One Year	[1],[2]	5.50%	5.62%
Weighted average yield, After One Through Five Years	[1],[2]	4.70%	4.71%
Weighted average yield, After Five Through Ten Years	[1],[2]	5.54%	5.54%
Weighted average yield, After Ten Years	[1],[2]	2.69%	2.53%
Weighted average yield, Total	[1],[2]	3.63%	3.68%
Municipals
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Less Than One Year	[3]	$ 275	$ 265
Amortized cost, After One Through Five Years	[3]	289	563
Amortized cost, After Five Through Ten Years	[3]	0	0
Amortized cost, After Ten Years	[3]	0	0
Amortized cost, Total	[3]	564	828
Estimated fair value, Less Than One Year	[3]	275	265
Estimated fair value, After One Through Five Years	[3]	291	566
Estimated fair value, After Five Through Ten Years	[3]	0	0
Estimated fair value, After Ten Years	[3]	0	0
Estimated Fair Value	[3]	$ 566	$ 831
Weighted average yield, Less Than One Year	[2],[3]	5.61%	5.46%
Weighted average yield, After One Through Five Years	[2],[3]	5.76%	5.69%
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]	5.69%	5.62%
Equity securities
The amortized cost and fair value of available-for-sale securites by maturity
Amortized cost, Less Than One Year	[4]	$ 8,800	$ 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]	8,800	7,522
Estimated fair value, Less Than One Year	[4]	8,644	7,260
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]	8,644	$ 7,260
Deposits
Available-for-sale Securities, Other Disclosure Items
Available-for-sale securities pledged as collateral		4,000
Repurchase agreements
Available-for-sale Securities, Other Disclosure Items
Available-for-sale securities pledged as collateral		$ 11,200
[1]	Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.
[2]	Yields are calculated based on amortized cost.
[3]	Yields have been adjusted to a tax equivalent basis assuming a 35% federal tax rate.
[4]	These equity securities do not have a stated maturity.
[5]	Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.

SECURITIES (Details 2)

SECURITIES (Details 2) - Equity securities - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
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	6,295	6,227
Unrealized Loss, 12 Months or Longer	(205)	(273)
Fair Value, Total	6,295	6,227
Unrealized Loss, Total	$ (205)	$ (273)

LOANS AND ALLOWANCE FOR LOAN 35

LOANS AND ALLOWANCE FOR LOAN LOSSES (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Loans and Leases Receivable, Net Reported Amount
Commercial	$ 7,053,979	$ 6,672,631
Mortgage finance	4,961,159	4,966,276
Construction	2,150,453	1,851,717
Real estate	3,391,831	3,139,197
Consumer	27,554	25,323
Leases	96,878	113,996
Gross loans held for investment	17,681,854	16,769,140	$ 15,932,582
Deferred income (net of direct origination costs)	(58,301)	(57,190)
Allowance for loan losses	(180,436)	(141,111)	$ (130,540)	$ (100,954)
Loans held for investment, net	17,443,117	16,570,839
Participating mortgage finance loans	$ 1,036,800	$ 454,800

LOANS AND ALLOWANCE FOR LOAN 36

LOANS AND ALLOWANCE FOR LOAN LOSSES - Credit Risk Profile (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Financing Receivable, Recorded Investment [Line Items]
Commercial	$ 7,053,979	$ 6,672,631
Mortgage finance	4,961,159	4,966,276
Construction	2,150,453	1,851,717
Real estate	3,391,831	3,139,197
Consumer	27,554	25,323
Leases	96,878	113,996
Gross loans held for investment	17,681,854	16,769,140	$ 15,932,582
Pass
Financing Receivable, Recorded Investment [Line Items]
Commercial	6,605,475	6,375,332
Mortgage finance	4,961,159	4,966,276
Construction	2,130,826	1,821,678
Real estate	3,348,510	3,085,463
Consumer	27,210	25,093
Leases	92,875	103,560
Gross loans held for investment	17,166,055	16,377,402
Special mention
Financing Receivable, Recorded Investment [Line Items]
Commercial	128,785	111,911
Mortgage finance	0	0
Construction	7,361	13,090
Real estate	34,581	30,585
Consumer	0	3
Leases	37	334
Gross loans held for investment	170,764	155,923
Substandard-accruing
Financing Receivable, Recorded Investment [Line Items]
Commercial	153,386	46,731
Mortgage finance	0	0
Construction	12,107	281
Real estate	6,319	3,837
Consumer	144	227
Leases	3,966	4,951
Gross loans held for investment	175,922	56,027
Non-accrual
Financing Receivable, Recorded Investment [Line Items]
Commercial	166,333	138,657
Mortgage finance	0	0
Construction	159	16,668
Real estate	2,421	19,312
Consumer	200	0
Leases	0	5,151
Gross loans held for investment	$ 169,113	$ 179,788

LOANS AND ALLOWANCE FOR LOAN 37

LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 2) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reserve for loan losses:
Beginning balance	$ 141,111	$ 100,954
Provision for loan losses	66,139	38,728
Charge-offs	34,800	11,711
Recoveries	7,986	2,569
Net charge-offs (recoveries)	26,814	9,142
Period end amount allocated to:
Loans individually evaluated for impairment			$ 42,864	$ 9,559
Loans collectively evaluated for impairment			137,572	120,981
Ending balance	141,111	100,954	180,436	130,540
Commercial
Reserve for loan losses:
Beginning balance	112,446	70,654
Provision for loan losses	65,446	48,689
Charge-offs	34,232	11,278
Recoveries	7,829	2,098
Net charge-offs (recoveries)	26,403	9,180
Period end amount allocated to:
Loans individually evaluated for impairment			42,674	9,304
Loans collectively evaluated for impairment			108,815	100,859
Ending balance	112,446	70,654	151,489	110,163
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	6,836	7,935
Provision for loan losses	1,607	(3,944)
Charge-offs	0	0
Recoveries	34	397
Net charge-offs (recoveries)	(34)	(397)
Period end amount allocated to:
Loans individually evaluated for impairment			24	0
Loans collectively evaluated for impairment			8,453	4,388
Ending balance	6,836	7,935	8,477	4,388
Real Estate
Reserve for loan losses:
Beginning balance	13,381	15,582
Provision for loan losses	1,981	(4,328)
Charge-offs	528	346
Recoveries	36	28
Net charge-offs (recoveries)	492	318
Period end amount allocated to:
Loans individually evaluated for impairment			136	254
Loans collectively evaluated for impairment			14,734	10,682
Ending balance	13,381	15,582	14,870	10,936
Consumer
Reserve for loan losses:
Beginning balance	338	240
Provision for loan losses	(23)	154
Charge-offs	40	62
Recoveries	16	19
Net charge-offs (recoveries)	24	43
Period end amount allocated to:
Loans individually evaluated for impairment			30	0
Loans collectively evaluated for impairment			261	351
Ending balance	338	240	291	351
Leases
Reserve for loan losses:
Beginning balance	3,931	1,141
Provision for loan losses	(2,646)	(221)
Charge-offs	0	25
Recoveries	71	27
Net charge-offs (recoveries)	(71)	(2)
Period end amount allocated to:
Loans individually evaluated for impairment			0	1
Loans collectively evaluated for impairment			1,356	921
Ending balance	3,931	1,141	1,356	922
Unallocated
Reserve for loan losses:
Beginning balance	4,179	5,402
Provision for loan losses	(226)	(1,622)
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			3,953	3,780
Ending balance	$ 4,179	$ 5,402	$ 3,953	$ 3,780

LOANS AND ALLOWANCE FOR LOAN 38

LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 3) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	$ 172,160	$ 183,340	$ 114,393
Loans collectively evaluated for impairment	17,509,694	16,585,800	15,818,189
Gross loans held for investment	17,681,854	16,769,140	15,932,582
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	168,014	140,479	82,050
Loans collectively evaluated for impairment	6,885,965	6,532,152	6,471,589
Gross loans held for investment	7,053,979	6,672,631	6,553,639
Mortgage finance loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	0	0	0
Loans collectively evaluated for impairment	4,961,159	4,966,276	4,312,790
Gross loans held for investment	4,961,159	4,966,276	4,312,790
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	159	16,668	16,749
Loans collectively evaluated for impairment	2,150,294	1,835,049	1,847,429
Gross loans held for investment	2,150,453	1,851,717	1,864,178
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	3,787	21,042	9,895
Loans collectively evaluated for impairment	3,388,044	3,118,155	3,048,679
Gross loans held for investment	3,391,831	3,139,197	3,058,574
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	200	0	0
Loans collectively evaluated for impairment	27,354	25,323	24,757
Gross loans held for investment	27,554	25,323	24,757
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans individually evaluated for impairment	0	5,151	5,699
Loans collectively evaluated for impairment	96,878	108,845	112,945
Gross loans held for investment	$ 96,878	$ 113,996	$ 118,644

LOANS AND ALLOWANCE FOR LOAN 39

LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 4) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Non-accrual loans earning on a cash basis	$ 816	$ 884

LOANS AND ALLOWANCE FOR LOAN 40

LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 5) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Commercial business loans | Energy
Financing Receivable, Impaired [Line Items]
Recorded investment			$ 37,968
With no related allowance recorded:
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 79,041		83,503
Unpaid principal balance	92,026		85,935
Related allowance	0		0
Average recorded investment	73,156		59,815
Interest income recognized	28		60
With no related allowance recorded: | Commercial business loans | Business loans
Financing Receivable, Impaired [Line Items]
Recorded investment	15,615		11,097
Unpaid principal balance	18,839		13,529
Related allowance	0		0
Average recorded investment	10,359		17,311
Interest income recognized	0		0
With no related allowance recorded: | Commercial business loans | Energy
Financing Receivable, Impaired [Line Items]
Recorded investment	61,339
Unpaid principal balance	71,100		37,968
Related allowance	0		0
Average recorded investment	53,274		21,791
Interest income recognized	0		36
With no related allowance recorded: | Construction | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	0		16,668
Unpaid principal balance	0		16,668
Related allowance	0		0
Average recorded investment	3,704		9,764
Interest income recognized	0		0
With no related allowance recorded: | Real estate | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0
Unpaid principal balance	0		0
Related allowance	0		0
Average recorded investment	0		3,352
Interest income recognized	0		0
With no related allowance recorded: | Real estate | Commercial
Financing Receivable, Impaired [Line Items]
Recorded investment	2,087		15,353
Unpaid principal balance	2,087		15,353
Related allowance	0		0
Average recorded investment	5,282		4,364
Interest income recognized	28		24
With no related allowance recorded: | Real estate | Secured by 1-4 family
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0
Unpaid principal balance	0		0
Related allowance	0		0
Average recorded investment	0		0
Interest income recognized	0		0
With no related allowance recorded: | Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0
Unpaid principal balance	0		0
Related allowance	0		0
Average recorded investment	0		0
Interest income recognized	0		0
With no related allowance recorded: | Leases
Financing Receivable, Impaired [Line Items]
Recorded investment	0		2,417
Unpaid principal balance	0		2,417
Related allowance	0		0
Average recorded investment	537		3,233
Interest income recognized	0		0
With an allowance recorded:
Financing Receivable, Impaired [Line Items]
Recorded investment	93,119		99,837
Unpaid principal balance	97,748		104,154
Related allowance	42,864		23,467
Average recorded investment	101,756		42,528
Interest income recognized	18		0
With an allowance recorded: | Commercial business loans | Business loans
Financing Receivable, Impaired [Line Items]
Recorded investment	23,079		20,983
Unpaid principal balance	23,154		25,300
Related allowance	9,516		5,737
Average recorded investment	22,207		31,131
Interest income recognized	0		0
With an allowance recorded: | Commercial business loans | Energy
Financing Receivable, Impaired [Line Items]
Recorded investment	67,981		70,431
Unpaid principal balance	72,535		70,431
Related allowance	33,158		14,103
Average recorded investment	74,770		6,641
Interest income recognized	18		0
With an allowance recorded: | Construction | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	159		0
Unpaid principal balance	159		0
Related allowance	24		0
Average recorded investment	18		0
Interest income recognized	0		0
With an allowance recorded: | Real estate | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	1,366		5,335
Unpaid principal balance	1,366		5,335
Related allowance	20		1,066
Average recorded investment	3,548		2,558
Interest income recognized	0		0
With an allowance recorded: | Real estate | Commercial
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0
Unpaid principal balance	0		0
Related allowance	0		0
Average recorded investment	0		306
Interest income recognized	0		0
With an allowance recorded: | Real estate | Secured by 1-4 family
Financing Receivable, Impaired [Line Items]
Recorded investment	334		354
Unpaid principal balance	334		354
Related allowance	116		125
Average recorded investment	469		1,580
Interest income recognized	0		0
With an allowance recorded: | Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	200		0
Unpaid principal balance	200		0
Related allowance	30		0
Average recorded investment	22		10
Interest income recognized	0		0
With an allowance recorded: | Leases
Financing Receivable, Impaired [Line Items]
Recorded investment	0		2,734
Unpaid principal balance	0		2,734
Related allowance	0		2,436
Average recorded investment	722		302
Interest income recognized	0		0
Combined:
Financing Receivable, Impaired [Line Items]
Recorded investment	172,160		183,340
Unpaid principal balance	189,774		190,089
Related allowance	42,864		23,467
Average recorded investment	174,912	$ 90,700	102,343
Interest income recognized	46		60
Combined: | Commercial business loans | Business loans
Financing Receivable, Impaired [Line Items]
Recorded investment	38,694		32,080
Unpaid principal balance	41,993		38,829
Related allowance	9,516		5,737
Average recorded investment	32,566		48,442
Interest income recognized	0		0
Combined: | Commercial business loans | Energy
Financing Receivable, Impaired [Line Items]
Recorded investment	129,320		108,399
Unpaid principal balance	143,635		108,399
Related allowance	33,158		14,103
Average recorded investment	128,044		28,432
Interest income recognized	18		36
Combined: | Construction | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	159		16,668
Unpaid principal balance	159		16,668
Related allowance	24		0
Average recorded investment	3,722		9,764
Interest income recognized	0		0
Combined: | Real estate | Market risk
Financing Receivable, Impaired [Line Items]
Recorded investment	1,366		5,335
Unpaid principal balance	1,366		5,335
Related allowance	20		1,066
Average recorded investment	3,548		5,910
Interest income recognized	0		0
Combined: | Real estate | Commercial
Financing Receivable, Impaired [Line Items]
Recorded investment	2,087		15,353
Unpaid principal balance	2,087		15,353
Related allowance	0		0
Average recorded investment	5,282		4,670
Interest income recognized	28		24
Combined: | Real estate | Secured by 1-4 family
Financing Receivable, Impaired [Line Items]
Recorded investment	334		354
Unpaid principal balance	334		354
Related allowance	116		125
Average recorded investment	469		1,580
Interest income recognized	0		0
Combined: | Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	200		0
Unpaid principal balance	200		0
Related allowance	30		0
Average recorded investment	22		10
Interest income recognized	0		0
Combined: | Leases
Financing Receivable, Impaired [Line Items]
Recorded investment	0		5,151
Unpaid principal balance	0		5,151
Related allowance	0		2,436
Average recorded investment	1,259		3,535
Interest income recognized	$ 0		$ 0

LOANS AND ALLOWANCE FOR LOAN 41

LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 6) $ in Thousands	Sep. 30, 2016USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 80,233
Non-accrual	169,113
Current	17,432,508
Total	17,681,854
Premium finance loans past due 90 days and still accruing	7,100
Commercial business loans | Business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	62,413
Non-accrual	37,013
Current	6,012,367
Total	6,111,793
Commercial business loans | Energy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,179
Non-accrual	129,320
Current	811,687
Total	942,186
Mortgage finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
Non-accrual	0
Current	4,961,159
Total	4,961,159
Construction | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	14,349
Non-accrual	159
Current	2,125,683
Total	2,140,191
Construction | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,063
Non-accrual	0
Current	9,199
Total	10,262
Real estate | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	639
Non-accrual	0
Current	2,548,337
Total	2,548,976
Real estate | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	536
Non-accrual	334
Current	185,869
Total	186,739
Real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
Non-accrual	2,087
Current	654,029
Total	656,116
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	13
Non-accrual	200
Current	27,341
Total	27,554
Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	41
Non-accrual	0
Current	96,837
Total	96,878
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	54,673
30-59 Days Past Due | Commercial business loans | Business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	37,993
30-59 Days Past Due | Commercial business loans | Energy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,179
30-59 Days Past Due | Mortgage finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
30-59 Days Past Due | Construction | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	14,015
30-59 Days Past Due | Construction | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,063
30-59 Days Past Due | Real estate | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
30-59 Days Past Due | Real estate | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	382
30-59 Days Past Due | Real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
30-59 Days Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
30-59 Days Past Due | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	41
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	15,854
60-89 Days Past Due | Commercial business loans | Business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	14,827
60-89 Days Past Due | Commercial business loans | Energy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60-89 Days Past Due | Mortgage finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60-89 Days Past Due | Construction | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	334
60-89 Days Past Due | Construction | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60-89 Days Past Due | Real estate | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	639
60-89 Days Past Due | Real estate | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	47
60-89 Days Past Due | Real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60-89 Days Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	7
60-89 Days Past Due | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
Greater Than 90 Days and Accruing(1)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	9,706	[1]
Greater Than 90 Days and Accruing(1) | Commercial business loans | Business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	9,593	[1]
Greater Than 90 Days and Accruing(1) | Commercial business loans | Energy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	[1]
Greater Than 90 Days and Accruing(1) | Mortgage finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	[1]
Greater Than 90 Days and Accruing(1) | Construction | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	[1]
Greater Than 90 Days and Accruing(1) | Construction | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	[1]
Greater Than 90 Days and Accruing(1) | Real estate | Market risk
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	[1]
Greater Than 90 Days and Accruing(1) | Real estate | Secured by 1-4 family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	107	[1]
Greater Than 90 Days and Accruing(1) | Real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	[1]
Greater Than 90 Days and Accruing(1) | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	6	[1]
Greater Than 90 Days and Accruing(1) | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 0	[1]
[1]	Loans past due 90 days and still accruing includes premium finance loans of $7.1 million. These loans are generally secured by obligations of insurance carriers to refund premiums on canceled insurance policies. The refund of premiums from the insurance carriers can take 180 days or longer from the cancellation date.

LOANS AND ALLOWANCE FOR LOAN 42

LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 7)	9 Months Ended		12 Months Ended
	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Financing Receivable, Modifications [Line Items]
Loans considered restructured that are not already on non-accrual			$ 249,000
Non-accrual loans that met the criteria for restructured unfunded commitments	$ 19,700,000		$ 24,900,000
Number of restructured loans	2	5
Pre-restructuring outstanding recorded investment	$ 14,235,000	$ 20,459,000
Post-restructuring outstanding recorded investment	$ 13,289,000	$ 15,438,000
Energy loans
Financing Receivable, Modifications [Line Items]
Number of restructured loans	2
Pre-restructuring outstanding recorded investment	$ 14,235,000
Post-restructuring outstanding recorded investment	$ 13,289,000
Commercial business loans
Financing Receivable, Modifications [Line Items]
Number of restructured loans	0	5
Pre-restructuring outstanding recorded investment	$ 0	$ 20,459,000
Post-restructuring outstanding recorded investment	$ 0	$ 15,438,000
Real estate
Financing Receivable, Modifications [Line Items]
Number of restructured loans	0
Pre-restructuring outstanding recorded investment	$ 0
Post-restructuring outstanding recorded investment	$ 0

LOANS AND ALLOWANCE FOR LOAN 43

LOANS AND ALLOWANCE FOR LOAN LOSSES - TDR Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Financing Receivable, Modifications [Line Items]
Details of how restructured loans were modified	$ 13,289	$ 15,438
Extended maturity
Financing Receivable, Modifications [Line Items]
Details of how restructured loans were modified	0	0
Adjusted payment schedule
Financing Receivable, Modifications [Line Items]
Details of how restructured loans were modified	12,647	0
Combination of maturity extension and payment schedule adjustment
Financing Receivable, Modifications [Line Items]
Details of how restructured loans were modified	$ 642	$ 15,438

OREO AND VALUATION ALLOWANCE 44

OREO AND VALUATION ALLOWANCE FOR LOSSES ON OREO (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2016		Sep. 30, 2015	Sep. 30, 2016		Sep. 30, 2015
Real Estate Acquired Through Foreclosure [Roll Forward]
Beginning balance	$ 18,727		$ 609	$ 278	[1],[2]	$ 568
Additions	282		0	18,822		1,177
Sales	0		(422)	(91)		(1,558)
Valuation allowance for OREO	0		0	0		0
Direct write-downs	0		0	0		0
Ending balance	$ 19,009	[1],[2]	$ 187	$ 19,009	[1],[2]	$ 187
[1]	Loans held for investment and OREO are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions.
[2]	OREO is transferred from loans to OREO at fair value less selling costs.

CERTAIN TRANSFERS OF FINANCIA45

CERTAIN TRANSFERS OF FINANCIAL ASSETS (Details)	9 Months Ended
	Sep. 30, 2016USD ($)loan	Dec. 31, 2015USD ($)loan
Transfers and Servicing [Abstract]
Number of loans in servicing portfolio | loan	4,954	168
Outstanding principal balance of loans in servicing portfolio Financial Assets, Principal Amount Outstanding	$ 1,279,300,000	$ 39,000,000
Escrow fund deposits related to servicing assets	18,500,000	$ 240,000
Mortgage loans sold during the period	1,366,800,000
Estimated exposure related to servicing assets	$ 621,000

CERTAIN TRANSFERS OF FINANCIA46

CERTAIN TRANSFERS OF FINANCIAL ASSETS (Details 1) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Transfers and Servicing [Abstract]
Unpaid principal balance	$ 620,207	$ 82,853
Fair value	648,684	86,075
Fair value over/(under) unpaid principal balance	$ 28,477	$ 3,222

CERTAIN TRANSFERS OF FINANCIA47

CERTAIN TRANSFERS OF FINANCIAL ASSETS (Details 2) $ in Thousands	9 Months Ended
	Sep. 30, 2016USD ($)
Servicing asset:
Balance, beginning of year(1)	$ 423
Capitalized servicing rights	16,344
Amortization	(891)
Balance, end of period	15,876
Valuation allowance:
Balance, beginning of year	0
Increase in valuation allowance	414
Balance, end of period	414
Servicing asset, net(1)	$ 15,462

CERTAIN TRANSFERS OF FINANCIA48

CERTAIN TRANSFERS OF FINANCIAL ASSETS (Details 3)	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Transfers and Servicing [Abstract]
Average discount rates (percent)	10.09%	9.76%
Expected prepayment speeds (percent)	11.18%	9.66%
Weighted average life, in years	6 years 6 months	7 years 3 months 18 days

FINANCIAL INSTRUMENTS WITH OF49

FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
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	$ 5,604,322	$ 5,542,363
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	$ 179,447	$ 182,219

REGULATORY MATTERS (Details)

REGULATORY MATTERS (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Regulatory Capital Requirements [Abstract]
CET1	7.55%	7.47%
Tier 1 capital	8.80%	8.81%
Total capital	11.09%	11.05%
Tier 1 leverage	8.38%	8.92%
Mortgage finance	$ 4,961,159	$ 4,966,276
Mortgage finance, average balance	$ 4,700,000

STOCK-BASED COMPENSATION (Detai

STOCK-BASED COMPENSATION (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	May 19, 2015
Restricted stock units, additional disclosures
Compensation expense	$ 2,450	$ 2,645	$ 6,175	$ 9,286
Unrecognized compensation expense related to unvested awards	17,378		$ 17,378
Weighted average period over which expense is expected to be recognized, in years			3 years 3 months
SARs
Restricted stock units, additional disclosures
Compensation expense	74	85	$ 233	282
RSUs
Restricted stock units, additional disclosures
Compensation expense	1,149	1,140	3,233	3,046
Cash-based performance units
Restricted stock units, additional disclosures
Compensation expense	$ 1,227	$ 1,420	$ 2,709	$ 5,958
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

FAIR VALUE DISCLOSURES (Assets

FAIR VALUE DISCLOSURES (Assets and Liabilities) (Details) - USD ($) $ in Thousands		Sep. 30, 2016		Jun. 30, 2016	Dec. 31, 2015		Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale		$ 26,356			$ 29,992
Loans held for sale		648,684			86,075
OREO		19,009	[1],[2]	$ 18,727	278	[1],[2]	$ 187	$ 609	$ 568
Derivative assets		58,158			35,292
Derivative liabilities		(60,548)			(35,420)
Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[3]	17,146			21,901
Municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[4]	566			831
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[5],[6]	8,644			7,260
Fair value measurements, recurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	[7]	0			0
Derivative assets	[7]	0			0
Derivative liabilities	[7]	0			0
Deferred Compensation Liability, Current and Noncurrent	[7]	1,300
Fair value measurements, recurring basis | Level 1 | Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8]	0			0
Fair value measurements, recurring basis | Level 1 | Municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8]	0			0
Fair value measurements, recurring basis | Level 1 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8],[9]	1,300			0
Fair value measurements, recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	[7]	648,684			86,075
Derivative assets	[7]	58,158			35,292
Derivative liabilities	[7]	(60,548)			(35,420)
Deferred Compensation Liability, Current and Noncurrent	[7]	0
Fair value measurements, recurring basis | Level 2 | Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8]	17,146			21,901
Fair value measurements, recurring basis | Level 2 | Municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8]	566			831
Fair value measurements, recurring basis | Level 2 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8],[9]	7,344			7,260
Fair value measurements, recurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	[7]	0			0
Derivative assets	[7]	0			0
Derivative liabilities	[7]	0			0
Deferred Compensation Liability, Current and Noncurrent	[7]	0
Fair value measurements, recurring basis | Level 3 | Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8]	0			0
Fair value measurements, recurring basis | Level 3 | Municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8]	0			0
Fair value measurements, recurring basis | Level 3 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, available-for-sale	[8],[9]	0			0
Fair value measurements, nonrecurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	[1],[10]	0			0
OREO	[1],[2]	0			0
Fair value measurements, nonrecurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	[1],[10]	0			0
OREO	[1],[2]	0			0
Fair value measurements, nonrecurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	[1],[10]	36,449			41,420
OREO	[1],[2]	$ 19,009			$ 278
[1]	Loans held for investment and OREO are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions.
[2]	OREO is transferred from loans to OREO at fair value less selling costs.
[3]	Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.
[4]	Yields have been adjusted to a tax equivalent basis assuming a 35% federal tax rate.
[5]	Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.
[6]	These equity securities do not have a stated maturity.
[7]	Derivative assets and liabilities are measured at fair value on a recurring basis, generally quarterly.
[8]	Securities are measured at fair value on a recurring basis, generally monthly.
[9]	Equity securities consist of Community Reinvestment Act funds and investments related to our non-qualified deferred compensation plan.
[10]	Includes impaired loans that have been measured for impairment at the fair value of the loan’s collateral.

FAIR VALUE DISCLOSURES (Financi

FAIR VALUE DISCLOSURES (Financial Instruments) (Details) - USD ($) $ in Thousands		Sep. 30, 2016		Jun. 30, 2016	Dec. 31, 2015		Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
OREO		$ 19,009	[1],[2]	$ 18,727	$ 278	[1],[2]	$ 187	$ 609	$ 568
Securities, available-for-sale		26,356			29,992
Loans held for sale		648,684			86,075
Derivative assets		58,158			35,292
Servicing Asset at Fair Value, Amount		15,462			423
Derivative liabilities		60,548			35,420
Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		3,588,419			1,790,870
Securities, available-for-sale		26,356			29,992
Loans held for sale		648,684			86,075
Loans held for investment, net		17,443,117			16,570,839
Derivative assets		58,158			35,292
Deposits		18,145,123			15,084,619
Federal funds purchased		73,768			74,164
Customer repurchase agreements		7,652			68,887
Other borrowings		1,670,000			1,500,000
Subordinated notes		280,954			280,682
Trust preferred subordinated debentures		113,406			113,406
Derivative liabilities		60,548			35,420
Estimated fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		3,588,419			1,790,870
Securities, available-for-sale		26,356			29,992
Loans held for sale		648,684			86,075
Loans held for investment, net		17,445,311			16,576,297
Derivative assets		58,158			35,292
Deposits		18,145,619			15,085,080
Federal funds purchased		73,768			74,164
Customer repurchase agreements		7,652			68,887
Other borrowings		1,670,000			1,500,000
Subordinated notes		284,230			285,773
Trust preferred subordinated debentures		113,406			113,406
Derivative liabilities		60,548			35,420
Level 3 | Fair value measurements, nonrecurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of impaired loans		61,700			49,700
Allowance allocation of impaired loans		25,300			8,300
OREO	[1],[2]	19,009			278
Loans held for investment, net	[1],[3]	$ 36,449			$ 41,420
[1]	Loans held for investment and OREO are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions.
[2]	OREO is transferred from loans to OREO at fair value less selling costs.
[3]	Includes impaired loans that have been measured for impairment at the fair value of the loan’s collateral.

DERIVATIVE FINANCIAL INSTRUME54

DERIVATIVE FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Asset Derivative	$ 58,158	$ 35,292
Liability Derivative	60,548	35,420
Offsetting derivative liability	0	0
Offsetting derivative asset	0	0
Derivative asset, net	58,158	35,292
Derivative liability, net	$ 60,548	35,420
Description of credit risk exposure on interest rate swaps and caps	Our credit exposure on derivative instruments is limited to the net favorable value and interest payments by each counterparty. In such cases collateral may be required from the counterparties involved if the net value of the derivative instruments exceed a nominal amount considered to be immaterial
Credit exposure relating to interest rate swaps and caps	$ 58,200	35,300
Cash collateral pledge for derivatives	65,500	$ 37,100
Interest-bearing deposits
Derivatives, Fair Value [Line Items]
Cash collateral pledge for derivatives	62,100
Accrued interest receivable and other assets
Derivatives, Fair Value [Line Items]
Cash collateral pledge for derivatives	$ 3,400
Commercial loan/lease interest rate swaps | Non-hedging interest rate derivatives/swaps | Commercial loan/lease | Weighted-average interest rate received
Derivatives, Fair Value [Line Items]
Weighted-average interest rate received and paid	3.00%	2.96%
Commercial loan/lease interest rate swaps | Non-hedging interest rate derivatives/swaps | Commercial loan/lease | Weighted-average interest rate paid
Derivatives, Fair Value [Line Items]
Weighted-average interest rate received and paid	4.61%	4.72%
Commercial loan/lease interest rate caps
Derivatives, Fair Value [Line Items]
Weighted-average interest rate received and paid	2.45%	2.34%
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	$ 1,070,684	$ 976,389
Asset Derivative	0	0
Liability Derivative	56,503	33,851
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	211,854	194,304
Asset Derivative	230	1,441
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	1,070,684	976,389
Asset Derivative	56,503	33,851
Liability Derivative	0	0
Customer counterparties: | Commercial loan/lease interest rate caps | Non-hedging interest rate derivatives/swaps | Commercial loan/lease
Derivatives, Fair Value [Line Items]
Notional Amount	211,854	194,304
Asset Derivative	0	0
Liability Derivative	230	1,441
Loan purchase commitments | Interest rate derivative | Economic hedging interest rate derivatives
Derivatives, Fair Value [Line Items]
Notional Amount	310,534	62,835
Asset Derivative	1,425	0
Liability Derivative	0	109
Forward sales commitments | Interest rate derivative | Economic hedging interest rate derivatives
Derivatives, Fair Value [Line Items]
Notional Amount	941,963	143,200
Asset Derivative	0	0
Liability Derivative	$ 3,815	$ 19

NEW ACCOUNTING PRONOUNCEMENTS (

NEW ACCOUNTING PRONOUNCEMENTS (Details) - Accounting Standards Update 2015-03 - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Other Noncurrent Assets
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Debt issuance costs	$ (5)	$ (5.3)
Long-term Debt
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Debt issuance costs	$ 5	$ 5.3