Texas Capital Bancshares (TCBI) 10-K 13 Feb 24 2023 FY Annual report Financial data

Cover

Cover - USD ($)	12 Months Ended
	Dec. 31, 2023	Feb. 07, 2024	Jun. 30, 2023
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Document Transition Report	false
Entity File Number	001-34657
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	75-2679109
Entity Address, Address Line One	2000 McKinney Avenue
Entity Address, Address Line Two	Suite 700
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Country	US
Entity Address, Postal Zip Code	75201
City Area Code	214
Local Phone Number	932-6600
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 2,447,009,000
Entity Common Stock, Shares Outstanding		47,409,350
Entity Registrant Name	TEXAS CAPITAL BANCSHARES INC/TX
Entity Central Index Key	0001077428
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Amendment Flag	false
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	TCBI
Security Exchange Name	NASDAQ
Series B Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	5.75% Non-Cumulative Perpetual Preferred Stock Series B, par value $0.01 per share
Trading Symbol	TCBIO
Security Exchange Name	NASDAQ

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2023
Audit Information [Abstract]
Auditor Name	Ernst & Young LLP
Auditor Location	Dallas, TX
Auditor Firm ID	42

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Assets
Cash and due from banks	$ 200,493	$ 233,637
Interest bearing cash and cash equivalents	3,042,357	4,778,623
Available-for-sale debt securities	3,225,892	2,615,644
Held-to-maturity debt securities	865,477	935,514
Equity securities	51,825	33,956
Investment securities	4,143,194	3,585,114
Loans held for sale	44,105	36,357
Loans held for investment, mortgage finance	3,978,328	4,090,033
Loans held for investment	16,362,230	15,197,307
Less: Allowance for credit losses on loans	(249,973)	(253,469)
Loans held for investment, net	20,090,585	19,033,871
Premises and equipment, net	32,366	26,382
Accrued interest receivable and other assets	801,670	719,162
Goodwill and intangibles, net	1,496	1,496
Total assets	28,356,266	28,414,642
Deposits [Abstract]
Non-interest bearing deposits	7,328,276	9,618,081
Interest bearing deposits	15,043,563	13,238,799
Total deposits	22,371,839	22,856,880
Accrued interest payable	33,234	24,000
Other liabilities	392,904	345,827
Short-term borrowings	1,500,000	1,201,142
Long-term debt	859,147	931,442
Total liabilities	25,157,124	25,359,291
Stockholders’ equity:
Preferred stock	300,000	300,000
Common stock	511	509
Additional paid-in capital	1,045,576	1,025,593
Retained earnings	2,435,393	2,263,502
Treasury stock - 3,905,067 and 2,083,535 shares at cost at December 31, 2023 and 2022, respectively	(220,334)	(115,310)
Accumulated other comprehensive loss, net of taxes	(362,004)	(418,943)
Total stockholders’ equity	3,199,142	3,055,351
Total liabilities and stockholders’ equity	$ 28,356,266	$ 28,414,642

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, Liquidation value	$ 1,000	$ 1,000
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	300,000	300,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	51,142,979	50,867,298
Treasury stock, shares	3,905,067	2,083,535

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Interest income
Interest and fees on loans	$ 1,300,653	$ 983,794	$ 820,476
Investment securities	108,294	63,179	42,820
Interest bearing cash and cash equivalents	220,976	97,271	13,233
Total interest income	1,629,923	1,144,244	876,529
Interest expense
Deposits	587,775	190,663	65,507
Short-term borrowings	70,642	29,077	4,613
Long-term debt	57,383	48,739	37,628
Total interest expense	715,800	268,479	107,748
Net interest income	914,123	875,765	768,781
Provision/(benefit) for credit losses	72,000	66,000	(30,000)
Net interest income after provision for credit losses	842,123	809,765	798,781
Non-interest income
Service charges on deposit accounts	20,874	23,266	19,054
Wealth management and trust fee income	13,955	15,036	13,173
Brokered loan fees	8,918	14,159	27,954
Investment banking and trading income	86,182	35,054	24,441
Gain on disposal of subsidiary	0	248,526	0
Other	31,490	13,481	53,664
Total non-interest income	161,419	349,522	138,286
Non-interest expense
Salaries and benefits	459,700	434,906	350,197
Occupancy expense	38,494	44,222	33,232
Marketing	25,854	32,388	10,006
Legal and professional	64,924	75,858	41,152
Communications and technology	81,262	69,253	75,185
Federal Deposit Insurance Corporation insurance assessment	36,775	14,344	21,027
Servicing-related expenses	0	0	27,765
Other	49,938	56,561	40,448
Total non-interest expense	756,947	727,532	599,012
Income before income taxes	246,595	431,755	338,055
Income tax expense	57,454	99,277	84,116
Net income	189,141	332,478	253,939
Preferred stock dividends	(17,250)	(17,250)	(18,721)
Net income available to common stockholders	171,891	315,228	235,218
Other comprehensive income/(loss)
Change in unrealized gain/(loss)	3,834	(479,814)	(80,366)
Amounts reclassified into net income	68,241	9,905	0
Other comprehensive income/(loss)	72,075	(469,909)	(80,366)
Income tax expense/(benefit)	15,136	(98,681)	(16,877)
Other comprehensive income/(loss), net of tax	56,939	(371,228)	(63,489)
Comprehensive income/(loss)	$ 246,080	$ (38,750)	$ 190,450
Basic earnings per common share
Basic earnings per common share	$ 3.58	$ 6.25	$ 4.65
Diluted earnings per common share
Diluted earnings per common share	$ 3.54	$ 6.18	$ 4.60

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)
Beginning balance, preferred stock (in shares) at Dec. 31, 2020		6,000,000
Beginning balance at Dec. 31, 2020	$ 2,871,224	$ 150,000	$ 504	$ 991,898	$ 1,713,056	$ (8)	$ 15,774
Beginning balance, common stock (in shares) at Dec. 31, 2020			50,470,867
Beginning balance, treasury stock (in shares) at Dec. 31, 2020						417
Comprehensive income/(loss):
Net income	253,939				253,939
Change in other comprehensive income/(loss), net of taxes	(63,489)						(63,489)
Total comprehensive loss	190,450
Stock-based compensation expense recognized in earnings	30,061			30,061
Issuance of preferred stock (in shares)		300,000
Issuance of preferred stock	289,723	$ 300,000		(10,277)
Preferred stock dividend	(18,721)				(18,721)
Issuance of stock related to stock-based awards (in shares)			148,044
Issuance of stock related to stock-based awards	(3,121)		$ 2	(3,123)
Redemption of preferred stock (in shares)		(6,000,000)
Redemption of preferred stock	(150,000)	$ (150,000)
Ending balance, preferred stock (in shares) at Dec. 31, 2021		300,000
Ending balance, common stock (in shares) at Dec. 31, 2021			50,618,911
Ending balance, treasury stock (in shares) at Dec. 31, 2021						417
Ending balance at Dec. 31, 2021	3,209,616	$ 300,000	$ 506	1,008,559	1,948,274	$ (8)	(47,715)
Comprehensive income/(loss):
Net income	332,478				332,478
Change in other comprehensive income/(loss), net of taxes	(371,228)						(371,228)
Total comprehensive loss	(38,750)
Stock-based compensation expense recognized in earnings	21,246			21,246
Preferred stock dividend	(17,250)				(17,250)
Issuance of stock related to stock-based awards (in shares)			248,387
Issuance of stock related to stock-based awards	(4,209)		$ 3	(4,212)
Repurchase of common stock (shares)						(2,083,118)
Repurchase of common stock	$ (115,302)					$ (115,302)
Ending balance, preferred stock (in shares) at Dec. 31, 2022		300,000
Ending balance, common stock (in shares) at Dec. 31, 2022			50,867,298
Ending balance, treasury stock (in shares) at Dec. 31, 2022	2,083,535					2,083,535
Ending balance at Dec. 31, 2022	$ 3,055,351	$ 300,000	$ 509	1,025,593	2,263,502	$ (115,310)	(418,943)
Comprehensive income/(loss):
Net income	189,141				189,141
Change in other comprehensive income/(loss), net of taxes	56,939						56,939
Total comprehensive loss	246,080
Stock-based compensation expense recognized in earnings	24,200			24,200
Preferred stock dividend	(17,250)				(17,250)
Issuance of stock related to stock-based awards (in shares)			275,681
Issuance of stock related to stock-based awards	(4,215)		$ 2	(4,217)
Repurchase of common stock (shares)						(1,821,532)
Repurchase of common stock	$ (105,024)					$ (105,024)
Ending balance, preferred stock (in shares) at Dec. 31, 2023		300,000
Ending balance, common stock (in shares) at Dec. 31, 2023			51,142,979
Ending balance, treasury stock (in shares) at Dec. 31, 2023	3,905,067					3,905,067
Ending balance at Dec. 31, 2023	$ 3,199,142	$ 300,000	$ 511	$ 1,045,576	$ 2,435,393	$ (220,334)	$ (362,004)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities
Net income	$ 189,141	$ 332,478	$ 253,939
Adjustments to reconcile net income to net cash provided by/(used in) operating activities:
Provision/(benefit) for credit losses	72,000	66,000	(30,000)
Deferred tax expense/(benefit)	(17,784)	(17,395)	(20,253)
Depreciation and amortization	40,473	45,284	93,406
Net (gain)/loss on sale of loans held for sale	0	990	(1,317)
Net gain recognized on investment securities	(4,060)	0	0
Decrease in valuation allowance on mortgage servicing rights	0	0	(16,448)
Stock-based compensation expense	24,200	21,432	31,326
Purchases and originations of loans held for sale	(15,706)	(37,461)	(1,413,899)
Proceeds from sales and repayments of loans held for sale	134,948	8,132	1,676,601
Gain on sale of subsidiary	0	(248,526)	0
Changes in operating assets and liabilities:
Accrued interest receivable and other assets	(78,606)	(25,482)	154,114
Accrued interest payable and other liabilities	29,134	2,518	(70,154)
Net cash provided by operating activities	373,740	147,970	657,315
Investing activities
Purchases of available-for-sale debt securities	(849,391)	(920,217)	(1,059,897)
Proceeds from sales of available-for-sale debt securities	56,923	0	0
Proceeds from maturities, redemptions and pay-downs of available-for-sale debt securities	225,034	432,175	569,931
Proceeds from maturities, redemptions and pay-downs of held-to-maturity debt securities	73,770	87,945	0
Sales/(purchases) of equity securities, net	(14,298)	11,651	0
Originations of loans held for investment, mortgage finance	(75,671,642)	(102,438,943)	(167,084,439)
Proceeds from pay-offs of loans held for investment, mortgage finance	75,783,347	105,824,407	168,688,351
Proceeds from sale of mortgage servicing rights	0	0	115,891
Net (increase)/decrease in loans held for investment, excluding mortgage finance loans	(1,342,840)	(3,001,340)	7,076
Proceeds from sale of subsidiary	0	3,324,159	0
Purchase of premises and equipment, net	(16,381)	(11,270)	(4,127)
Net cash provided by/(used in) investing activities	(1,755,478)	3,308,567	1,232,786
Financing activities
Net increase/(decrease) in deposits	(485,041)	(5,252,485)	(2,887,224)
Issuance of stock related to stock-based awards	(4,215)	(4,209)	(3,121)
Net proceeds from issuance of preferred stock	0	0	289,723
Redemption of preferred stock	0	0	(150,000)
Preferred dividends paid	(17,250)	(17,250)	(18,721)
Repurchase of common stock	(105,024)	(115,302)	0
Net increase/(decrease) in short-term borrowings	298,858	(1,001,690)	(908,919)
Net proceeds from issuance of long-term debt	0	0	639,440
Redemption of long-term debt	(75,000)	0	(111,000)
Net cash used in financing activities	(387,672)	(6,390,936)	(3,149,822)
Net decrease in cash and cash equivalents	(1,769,410)	(2,934,399)	(1,259,721)
Cash and cash equivalents at beginning of period	5,012,260	7,946,659	9,206,380
Cash and cash equivalents at end of period	3,242,850	5,012,260	7,946,659
Supplemental disclosures of cash flow information
Cash paid during the period for interest	773,034	252,178	111,199
Cash paid during the period for income taxes	71,941	128,435	101,101
Transfers of loans from held for investment to held for sale	126,990	0	0
Transfers of debt securities from available-for-sale to held-to-maturity	$ 0	$ 1,019,365	$ 0

Operations and Summary of Signi

Operations and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2023
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. (“TCBI” or the “Company”), a Delaware corporation, was incorporated in 1996 and commenced banking operations in 1998. The consolidated financial statements include the accounts of TCBI and its wholly owned subsidiary, Texas Capital Bank (the “Bank”), a full-service financial services firm that delivers customized solutions to businesses, entrepreneurs and individual customers. The Company is headquartered in Dallas, with primary banking offices in Austin, Dallas, Fort Worth, Houston and San Antonio, and has built a network of clients across the country. Basis of Presentation The Company’s 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. 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 credit losses, the fair value of financial instruments and the status of contingencies are particularly susceptible to significant change. In the second quarter of 2023, changes were made to certain estimates used in the Company’s current expected credit loss model, the most significant of which are more granular estimates of historical loss rates to incorporate probability of default and loss severities and allocations of expected losses to outstanding loan balances and off-balance sheet financial instruments. As a result of these changes, corresponding adjustments were also made to the Company’s portfolio segments to appropriately pool loans with similar risk characteristics and to the speed at which the Company reverts to historical loss rates for periods beyond which management is able to develop reasonable and supportable forecasts. See the Allowance for Credit Losses accounting policy below for additional details of these changes. Basic and Diluted Earnings Per Common Share Basic earnings per common share is based on net income available to common stockholders divided by the weighted-average number of common shares outstanding during the period excluding non-vested stock-settled awards. Diluted earnings per common share include the dilutive effect of non-vested stock-settled awards granted using the treasury stock method. Cash and Cash Equivalents Cash equivalents include amounts due from banks, interest bearing deposits in other banks and federal funds sold. Investment Securities Investment securities include debt securities and equity securities. Debt Securities Debt securities are classified as trading, available-for-sale or held-to-maturity. Debt securities not classified as held-to-maturity or trading are classified as available-for-sale. Management classifies securities at the time of purchase and re-assesses such designation at each balance sheet date. The amortized cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity, or in the case of mortgage-backed securities, over the estimated life of the security. Such amortization and accretion are included in interest income from investment securities. Gains or losses realized upon the sale of debt securities is recorded in other non-interest income on the consolidated statements of income and other comprehensive income. The cost of securities sold is based on the specific identification method. The Company has made a policy election to exclude accrued interest from the amortized cost basis of debt securities and report accrued interest separately in accrued interest and other assets on the consolidated balance sheets. Available-for-sale and held-to-maturity debt securities are placed on non-accrual status when management no longer expects to receive all contractual amounts due, which is generally at 90 days past due. Accrued interest receivable is reversed against interest income when a security is placed on non-accrual status. Accordingly, the Company does not recognize an allowance for credit loss against accrued interest receivable. Trading Account Debt securities acquired for resale in anticipation of short-term market movements are classified as trading and recorded at fair value, with realized and unrealized gains and losses recognized in income. Held-to-Maturity Debt securities are classified as held-to-maturity when the Company has the positive intent and ability to hold the securities to maturity. Held-to-maturity securities are stated at amortized cost, net of any allowance for credit losses. Management may transfer debt securities classified as available-for-sale to held-to-maturity when upon reassessment it is determined that the Company has both the positive intent and ability to hold these securities to maturity. The debt securities are transferred at fair value resulting in a premium or discount recorded on transfer date. Unrealized gains or losses at the date of transfer continue to be reported as a separate component of accumulated other comprehensive income/loss, net (“AOCI”). The premium or discount and the unrealized gain or loss, net of tax, in AOCI will be amortized to interest income over the remaining life of the securities using the interest method. Available-for-Sale Available-for-sale debt securities are recorded at fair value, with unrealized gains and losses, net of tax, reported as a separate component of AOCI. For available-for-sale debt securities in an unrealized loss position, the Company first assesses whether it intends to sell, or it is more-likely-than-not that it will be required to sell, the securities before recovery of the amortized cost basis. If either of these criteria is met, the securities’ amortized cost basis is written down to fair value as a current period expense recorded on the consolidated statements of income and other comprehensive income. If either of the above criteria is not met, management evaluates whether the decline in fair value is the result of credit losses or other factors. In making this assessment, management may consider various factors including the extent to which fair value is less than amortized cost, performance of any underlying collateral and adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected are compared to the amortized cost basis of the security and any excess is recorded as an allowance for credit losses, limited to the amount by which the fair value is less than the amortized cost basis. Any impairment not recorded through an allowance for credit losses is recognized in AOCI, net of tax, as a non-credit related impairment. Included in debt securities available-for-sale are credit risk transfer (“CRT”) securities, which represent unsecured obligations issued by government sponsored entities (“GSEs”) such as Freddie Mac and are designed to transfer mortgage credit risk from the GSE to private investors. CRT securities are structured to be subject to the performance of a reference pool of mortgage loans in which the Company shares in 50% of the first losses with the GSE. If the reference pool incurs losses, the amount the Company will recover on the notes is reduced by its share of the amount of such losses, which could potentially be up to 100% of the amount outstanding. Unrealized losses recognized in AOCI for the CRT securities are primarily related to the difference between the current market rate for similar securities and the stated interest rate and are not considered to be related to credit loss events. The CRT securities are generally interest-only for an initial period of time and may be restricted from being transferred until a future date. Equity Securities Equity securities with readily determinable fair values are stated at fair value with realized and unrealized gains and losses reported in income. Equity securities without readily determinable fair values are recorded at cost less any impairment. Loans Loans Held for Sale The Company transitioned its mortgage correspondent aggregation (“MCA”) program to a third party in 2021. Prior to transition, the Company committed to purchase residential mortgage loans from independent correspondent lenders and delivered those loans into the secondary market via whole loan sales to independent third parties or in securitization transactions to third parties such as Ginnie Mae or to GSEs. In some cases, the Company retained the mortgage servicing rights. Once purchased, these loans were classified as held for sale and carried at fair value pursuant to the election of the fair value option in accordance with Accounting Standards Codification (“ASC”) 825, Financial Instruments . At the commitment date, the Company entered into a corresponding forward sale commitment with a third party, typically Ginnie Mae or a GSE, to deliver the loans within a specified timeframe. The estimated gain/(loss) for the entire transaction (from initial purchase commitment to final delivery of loans) was recorded as an asset or liability. The fair value of loans held for sale is derived from observable current market prices, when available, and includes the fair value of the mortgage servicing rights. Adjustments to reflect unrealized gains and losses resulting from changes in fair value and realized gains and losses upon ultimate sale of the loans are classified as gain/(loss) on sale of loans held for sale on the consolidated statements of income and other comprehensive income. Residential mortgage loans held for sale 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. From time to time the Company holds for sale certain commercial loans and also the guaranteed portion of Small Business Administration 7(a) loans, which are carried at lower of cost or fair value. Loans Held for Investment Loans held for investment (including financing leases) are stated at the amount of unpaid principal reduced by unearned income, net of direct loan origination costs. Interest on loans is recognized using the simple interest method on the daily balances of the principal amounts outstanding. Loan origination fees, net of direct loan origination costs, and commitment fees are deferred and amortized as an adjustment to yield over the life of the loan, or over the commitment period, as applicable. A loan is considered past due when a contractually due payment has not been received by the contractual due date. The Company places a loan 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 as a reduction of current period interest income. Interest income is subsequently recognized on a cash basis as long as the remaining book balance of the asset is deemed to be collectible. If collectability is questionable, then cash payments are applied to principal. A loan is placed back on accrual status when both principal and interest are current and it is probable that all amounts due will be collected (both principal and interest) according to the terms of the loan agreement. Loans held for investment includes legal ownership interests in mortgage loans that the Company purchases through its mortgage finance division. The ownership interests are purchased from unaffiliated mortgage originators who are seeking additional liquidity to facilitate their ability to originate loans. The mortgage originator has no obligation to offer and the Company has no obligation to purchase these interests. The originator closes mortgage loans consistent with underwriting standards established by approved investors, and, at the time of the sale to the investor, the Company’s ownership interest and that of the originator are delivered to the investor selected by the originator and approved. The Company typically purchases up to a 99% ownership interest in each mortgage with the originator owning the remaining percentage. These mortgage ownership interests are generally held for a period of less than 30 days and more typically 10-20 days. Because of conditions in agreements with originators designed to reduce transaction risks, under ASC 860, Transfers and Servicing of Financial Assets (“ASC 860”), the ownership interests do not qualify as participating interests. Under ASC 860, the ownership interests are deemed to be loans to the originators and payments received from investors are deemed to be payments made by or on behalf of the originator to repay the loan. Because the Company has an actual, legal ownership interest in the underlying residential mortgage loan, these interests are reported as extensions of credit to the originators that are secured by the mortgage loans as collateral. Due to market conditions or events of default by the investor or the originator, the Company could be required to purchase the remaining interests in the mortgage loans and hold them beyond the expected 10-20 days. Mortgage loans acquired under these conditions would require mark-to-market adjustments to income and could require further allocations of the allowance for credit losses or be subject to charge-off in the event the loans become impaired. Allowance for Credit Losses The Company’s allowance for credit losses is determined using a current expected credit loss (“CECL”) model. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. It also applies to off-balance sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with ASU 2016-02 "Leases (Topic 842)" . The following is a discussion of the allowance for credit losses on loans held for investment and off-balance sheet credit exposures. See “ Investment Securities - Debt Securities ” above for discussion of the allowance for credit losses on available-for-sale and held-to maturity debt securities. The CECL methodology recognizes lifetime expected credit losses immediately when a financial asset is originated or purchased. The allowance for credit losses on loans is a valuation account that is deducted from the amortized cost basis of loans to present the net amount expected to be collected on the loans. Loans, or portions thereof, are charged off against the allowance when they are deemed uncollectible. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. The allowance for credit losses on off-balance sheet financial instruments is recorded in other liabilities on the consolidated balance sheets. Management estimates the allowance balance using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Historical credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwriting standards, portfolio mix, credit quality, or term, as well as for changes in macroeconomic conditions, such as changes in unemployment rates, gross domestic product, property values, or other relevant factors. The allowance for credit losses is comprised of reserves measured on a collective (pool) basis when similar risk characteristics exist. Loans that do not share risk characteristics are assigned a reserve based on an individual evaluation and are not included in the collective (pool) evaluation. For purposes of determining the collective (pool) allowance for credit losses, the loan portfolio is segregated into pools first by portfolio segment and then by past due status or credit grade. Each pool is assigned a loss estimate, reflecting historical loss rates that incorporate probability of default and severity of losses over the estimated remaining life of the loans. These loss estimates are then modified to incorporate a reasonable and supportable forecast of future losses at the pool level, as well as any necessary qualitative adjustments using a Portfolio Level Qualitative Factor (“PLQF”) and/or a Portfolio Segment Level Qualitative Factor (“SLQF”). A similar process is employed to calculate a reserve assigned to off-balance financial instruments, specifically unfunded loan commitments and letters of credit. Modified loss estimates are assigned based on the balance of the commitments estimated to be outstanding at the time of default. The PLQF and SLQF are utilized to address factors that are not present in historical loss rates and are otherwise unaccounted for in the quantitative process. The PLQF is used to apply a qualitative adjustment across the entire portfolio of loans, while the SLQF is designed to apply a qualitative adjustment across a single portfolio segment. Even though portions of the allowance may be allocated to specific loans, the entire allowance is available for any credit that, in management’s judgment, should be charged off. The Company generally uses a two-year forecast period, based on a single forecast scenario or a blend of multiple forecast scenarios, using variables management believes are most relevant to each portfolio segment. For periods beyond which management is able to develop reasonable and supportable forecasts, the Company reverts to the average historical loss rate, reflecting historical default probabilities and loss severities, using a reversion speed that approximates 1 to 2 years. The forecast period and scenario(s) used are reviewed on a quarterly basis and may be adjusted based on management's view of the current economic conditions and level of predictability the forecast can provide. Portfolio segments are used to pool loans with similar risk characteristics and align with the Company’s methodology for measuring expected credit losses. A summary of the primary portfolio segments is as follows: Commercial. The commercial loan portfolio is comprised of lines of credit for working capital, term loans, reserve-based loans to energy exploration and production companies, and leases to finance equipment and other business assets across a variety of industries. These loans are used for general corporate purposes including financing working capital, internal growth, and acquisitions and are generally secured by accounts receivable, inventory, oil and gas reserves, equipment and other assets of clients’ businesses. Mortgage Finance. Mortgage finance loans relate to mortgage warehouse lending operations in which the Company purchases mortgage loan ownership interests from unaffiliated mortgage originators that are generally held for a period of less than 30 days and more typically 10-20 days before they are sold to an approved investor. Volumes fluctuate based on the level of market demand for the product and the number of days between purchase and sale of the loans, which can be affected by changes in overall market interest rates and housing demand and tend to peak at the end of each month. Mortgage finance loans are consistently underwritten based on standards established by the approved investors. Market conditions or events of default by an investor or originator could require that the Company repurchases the remaining interests in the mortgage loans and hold them beyond the expected 10-20 days. Commercial Real Estate (“CRE”). The CRE portfolio is comprised of construction/development financing and limited term financing provided to professional real estate developers, owners/managers of commercial real estate projects and properties, and residential builders/developers. Collateral properties include office buildings, warehouse/distribution buildings, shopping centers, hotels/motels, senior living, apartment buildings, residential and commercial tract developments, and raw land or lots to be developed into single-family homes. The primary source of repayment on these loans is expected to come from the sale, permanent financing or lease of the real property collateral. The performance of these loans is impacted by fluctuations in collateral values, the ability of the borrower to obtain permanent financing, and, in the case of loans to residential builder/developers, volatility in consumer demand. Consumer. This category of loans is comprised of loans made to consumers for personal expenditures, first and second lien mortgages made for the purpose of purchasing or constructing 1-4 family residential dwellings and home equity revolving lines of credit. The Company has several pass credit grades that are assigned to loans based on varying levels of risk, ranging from credits that are secured by cash or marketable securities, to watch credits which have all the characteristics of an acceptable credit risk but warrant more than the normal level of monitoring. Within the criticized/classified credit grades are special mention, substandard and doubtful. Special mention loans are those that are currently protected by the sound worth and paying capacity of the borrower, but that are potentially weak and constitute an additional credit risk. These loans have the potential to deteriorate to a substandard grade due to the existence of financial or administrative deficiencies. Substandard loans have a well-defined weakness or weaknesses that jeopardizes the liquidation of the debt. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Some substandard loans are inadequately protected by the sound worth and paying capacity of the borrower and of the collateral pledged and may be considered impaired. Substandard loans can be accruing or can be on non-accrual depending on the circumstances of the individual loans. Loans classified as doubtful have all the weaknesses inherent in substandard loans with the added characteristics that the weaknesses make collection in full highly questionable and improbable. The possibility of loss is extremely high. All doubtful loans are on non-accrual. The methodology used in the estimation of the allowance, which is performed at least quarterly, is designed to be dynamic and responsive to changes in portfolio credit quality and forecasted economic conditions. Changes are reflected in the pool-basis allowance and in reserves assigned on an individual basis as the collectability of classified loans is evaluated with new information. As the Company’s portfolio has matured, historical loss ratios have been closely monitored. The review of the appropriateness of the allowance is performed by executive management and presented to the audit and risk committees of the board of directors for their review. The committees report to the board as part of the board's quarterly review of the Company’s consolidated financial statements. When management determines that foreclosure is probable, and for certain collateral-dependent loans where foreclosure is not considered probable, expected credit losses are based on the estimated fair value of the collateral adjusted for selling costs, when appropriate. A loan is considered collateral-dependent when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless either of the following applies: management has a reasonable expectation that a loan will be restructured or the extension or renewal options are included in the borrower contract and are not unconditionally cancellable. The Company does not measure an allowance for credit losses on accrued interest receivable balances because these balances are written off in a timely manner as a reduction to interest income when loans are placed on non-accrual status as discussed above. Other Real Estate Owned Other real estate owned (“OREO”), which is included in other assets on the consolidated balance sheet, consists of real estate that has been foreclosed. When foreclosure occurs, the acquired asset is recorded at fair value less selling costs, generally based on appraised value, which may result in partial charge-off of the loan through a charge to the allowance for credit losses, if necessary. Subsequent write-downs required for declines in value are recorded through a valuation allowance, or taken directly to the asset, and are recorded in other non-interest expense on the consolidated statements of income and other comprehensive income. Gains or losses on sale of OREO are recorded in other non-interest income on the consolidated statements of income and other comprehensive income. Goodwill and Other Intangible Assets, Net Intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or because the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset or liability. The Company had $1.5 million of goodwill at both December 31, 2023 and December 31, 2022. Intangible assets with definite useful lives are amortized over their estimated life. No amortization expense related to intangible assets was recorded during the year ended December 31, 2023, as compared to $338,000 and $405,000 during the years ended December 31, 2022 and 2021, respectively. Goodwill and intangible assets are tested for impairment at least annually or whenever changes in circumstances indicate the carrying amount of the assets may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value. In 2023 and 2022, the annual test of goodwill impairment was performed, and in both periods, no impairment was indicated. Premises and Equipment, Net Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. Furniture and equipment are generally depreciated over three Software Costs incurred in connection with development or purchase of internal use software and cloud computing arrangements, including in-substance software licenses, are capitalized. Amortization is computed on a straight-line basis over the estimated useful life of the asset, which generally ranges from one Financial Instruments with Off-Balance Sheet Risk The Company has undertaken certain guarantee obligations in the ordinary course of business which include liabilities with off-balance sheet risk. The Company 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 on the consolidated balance sheets. The Company’s exposure to credit loss in the event of non-performance by the other party to these financial instruments is represented by the contractual amount of the instruments. The Company 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 Company evaluates each customer’s creditworthiness on a case-by-case basis. Commitments to extend credit generally do not include mortgage finance arrangements with mortgage loan originators through the mortgage warehouse lending division, which are established as uncommitted “guidance” purchase and sale facilities under which the mortgage originator has no obligation to offer and the Company has no obligation to purchase interests in the mortgage loans subject to the arrangements. Standby letters of credit are conditional commitments issued by the Company 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. In conjunction with the sale and securitization of loans held for sale and their related servicing rights, the Company may be exposed to liability resulting from recourse, repurchase and make-whole agreements. If it is determined subsequent to the sale of a loan or its related servicing rights that a breach of the representations or warranties made in the applicable sale agreement has occurred, which may include guarantees that prepayments will not occur within a specified and customary time frame, the Company 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 and its related servicing rights. The 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. The Company establishes reserves for estimated losses of this nature inherent in the sale 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. Leases Right of use (“ROU”) assets represent the Company’s right to use an underlying asset during the lease term and lease liabilities represent its obligation to make lease payments arising from the lease. Lease agreements may contain extension options which typically provide for an extension of a lease term at the then fair market rental rates. As these extension options are not generally considered reasonably certain of exercise, they are not included in the lease term. Operating leases relate primarily to real estate used for corporate offices and bank branches and finance leases relate primarily to equipment. The Company does not separate lease and non-lease components for real estate leases. For those leases with a term greater than one year, ROU assets and lease liabilities are recognized at lease commencement based on the present value of the remaining lease payments using a discount rate that represents the incremental borrowing rate on the effective date of the lease, which is based on the Company’s collateralized borrowing capabilities over a similar term as the related lease payments. ROU assets are further adjusted for lease incentives. Operating leases in which the Company is the lessee are recorded as operating lease ROU assets and operating lease liabilities, and are included in other assets and other liabilities, respectively, on the consolidated balance sheets. Operating lease expense, which is comprised of amortization of the ROU a

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The following table presents the computation of basic and diluted earnings per share: Year ended December 31, (in thousands except share and per share data) 2023 2022 2021 Numerator: Net income $ 189,141 $ 332,478 $ 253,939 Preferred stock dividends 17,250 17,250 18,721 Net income available to common stockholders $ 171,891 $ 315,228 $ 235,218 Denominator: Basic earnings per common share—weighted average common shares 48,054,935 50,457,746 50,580,660 Effect of dilutive outstanding stock-settled awards 555,271 588,996 560,314 Dilutive earnings per common share—weighted average diluted common shares 48,610,206 51,046,742 51,140,974 Basic earnings per common share $ 3.58 $ 6.25 $ 4.65 Diluted earnings per common share $ 3.54 $ 6.18 $ 4.60 Anti-dilutive outstanding stock-settled awards 97,368 311,226 93,945

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The following is a summary of the Company’s investment securities: (in thousands) Amortized Gross Gross Estimated December 31, 2023 Available-for-sale debt securities: U.S. Treasury securities $ 651,112 $ — $ (14,639) $ 636,473 U.S. government agency securities 125,000 — (18,408) 106,592 Residential mortgage-backed securities 2,782,734 540 (312,442) 2,470,832 CRT securities 13,636 — (1,641) 11,995 Total available-for-sale debt securities 3,572,482 540 (347,130) 3,225,892 Held-to-maturity debt securities: Residential mortgage-backed securities 865,477 — (101,633) 763,844 Total held-to-maturity debt securities 865,477 — (101,633) 763,844 Equity securities 51,825 Total investment securities(2) $ 4,143,194 December 31, 2022 Available-for-sale debt securities: U.S. Treasury securities $ 698,769 $ — $ (28,187) $ 670,582 U.S. government agency securities 125,000 — (22,846) 102,154 Residential mortgage-backed securities 2,162,364 3 (331,320) 1,831,047 CRT securities 14,713 — (2,852) 11,861 Total available-for-sale debt securities 3,000,846 3 (385,205) 2,615,644 Held-to-maturity securities: Residential mortgage-backed securities 935,514 — (118,600) 816,914 Total held-to-maturity securities 935,514 — (118,600) 816,914 Equity securities 33,956 Total investment securities(2) $ 3,585,114 (1) Excludes accrued interest receivable of $9.5 million and $6.6 million at December 31, 2023 and December 31, 2022, respectively, related to available-for-sale debt securities and $1.4 million and $1.5 million at December 31, 2023 and December 31, 2022, respectively, related to held-to-maturity debt securities that is recorded in accrued interest receivable and other assets on the consolidated balance sheets. (2) Includes available-for-sale debt securities and equity securities at estimated fair value and held-to-maturity debt securities at amortized cost. Debt Securities In the first quarter of 2023, the Company sold U.S. Treasury securities with an amortized cost of $56.4 million and realized a gain of $489,000. The amortized cost and estimated fair value as of December 31, 2023, excluding accrued interest receivable, of available-for-sale and held-to-maturity debt securities are presented below by contractual maturity. Actual maturities may differ from contractual maturities of mortgage-backed securities because borrowers may have the right to call or prepay obligations with or without prepayment penalties. Available-for-sale Held-to-maturity (in thousands) Amortized Cost Fair Value Amortized Cost Fair Value Due within one year $ 251,438 $ 250,610 $ — $ — Due after one year through five years 449,674 430,022 — — Due after five years through ten years 105,690 89,141 — — Due after ten years 2,765,680 2,456,119 865,477 763,844 Total $ 3,572,482 $ 3,225,892 $ 865,477 $ 763,844 The table below presents the weighted average yields for the Company’s available-for-sale debt securities for the year ended December 31, 2023. Weighted average yields are calculated based on amortized cost on a tax-exempt basis assuming a 21% tax rate, where applicable. U.S. Treasury securities U.S. government agency securities Residential mortgage-backed securities CRT securities Due within one year 1.16 % — % — % — % Due after one year through five years 2.70 1.00 — — Due after five years through ten years — 1.21 1.20 5.51 Due after ten years — — 2.79 — Total 2.11 % 1.13 % 2.78 % 5.51 % The following table discloses the Company’s available-for-sale debt 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: Less Than 12 Months 12 Months or Longer Total (in thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss December 31, 2023 U.S. Treasury securities $ — $ — $ 636,473 $ (14,639) $ 636,473 $ (14,639) U.S. government agency securities — — 106,592 (18,408) 106,592 (18,408) Residential mortgage-backed securities 910,999 (19,751) 1,501,340 (292,691) 2,412,339 (312,442) CRT securities — — 11,995 (1,641) 11,995 (1,641) Total $ 910,999 $ (19,751) $ 2,256,400 $ (327,379) $ 3,167,399 $ (347,130) December 31, 2022 U.S. Treasury securities $ 670,582 $ (28,187) $ — $ — $ 670,582 $ (28,187) U.S. government agency securities — — 102,154 (22,846) 102,154 (22,846) Residential mortgage-backed securities 261,502 (9,481) 1,569,107 (321,839) 1,830,609 (331,320) CRT securities — — 11,861 (2,852) 11,861 (2,852) Total $ 932,084 $ (37,668) $ 1,683,122 $ (347,537) $ 2,615,206 $ (385,205) At December 31, 2023, the Company had 108 available-for-sale debt securities in an unrealized loss position, comprised of 11 U.S. Treasury securities, five U.S. government agency securities, 90 residential mortgage-backed securities and two CRT securities. The unrealized losses on the available-for-sale debt securities were the result of changes in market interest rates compared to the date the securities were acquired rather than the credit quality of the issuers or underlying loans. The Company does not currently intend to sell and based on current conditions it does not believe it is likely that the Company will be required to sell these available-for-sale debt securities before recovery of the amortized cost of such securities in an unrealized loss position and has, therefore recorded the unrealized losses related to this portfolio in AOCI. Held-to-maturity securities consist of government guaranteed securities for which no loss is expected. At December 31, 2023 and December 31, 2022, no allowance for credit losses was established for available-for-sale or held-to-maturity debt securities. At December 31, 2023, debt securities with carrying values of approximately $1.6 million were pledged to secure certain customer deposits. At December 31, 2022, debt securities with carrying values of approximately $16.1 million and $1.4 million were pledged to secure certain customer repurchase agreements and deposits, respectively. Equity Securities Equity securities consist of investments that qualify for consideration under the regulations implementing the Community Reinvestment Act and investments in exchange traded funds. The following is a summary of unrealized and realized gains/(losses) recognized on equity securities included in other non-interest income on the consolidated statements of income and other comprehensive income: Year Ended December 31, (in thousands) 2023 2022 Net gains/(losses) recognized during the period $ 3,571 $ (7,876) Less: Realized net gains/(losses) recognized on securities sold (393) 714 Unrealized net gains/(losses) recognized on securities still held $ 3,964 $ (8,590)

Loans and Allowance for Credit

Loans and Allowance for Credit Losses on Loans	12 Months Ended
	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Loans and Allowance for Credit Losses on Loans	Loans and Allowance for Credit Losses on Loans As discussed in Note 1 - Operations and Summary of Significant Accounting Policies, in the second quarter of 2023, changes were made to certain estimates used in the Company’s current expected credit loss model which resulted in adjustments being made to the Company’s portfolio segments. As a result, certain prior period balances below have been reclassified to conform to the current period presentation of portfolio segments. Loans are summarized by portfolio segment as follows: (in thousands) December 31, 2023 December 31, 2022 Loans held for investment(1): Commercial $ 10,410,766 $ 9,832,676 Mortgage finance 3,978,328 4,090,033 Commercial real estate 5,500,774 4,875,363 Consumer 530,948 552,848 Gross loans held for investment 20,420,816 19,350,920 Unearned income (net of direct origination costs) (80,258) (63,580) Total loans held for investment 20,340,558 19,287,340 Allowance for credit losses on loans (249,973) (253,469) Total loans held for investment, net $ 20,090,585 $ 19,033,871 Loans held for sale: Mortgage loans, at fair value $ 706 $ — Non-mortgage loans, at lower of cost or fair value 43,399 36,357 Total loans held for sale $ 44,105 $ 36,357 (1) Excludes accrued interest receivable of $118.1 million and $100.4 million at December 31, 2023 and December 31, 2022, respectively, that is recorded in accrued interest receivable and other assets on the consolidated balance sheets. The following tables summarize gross loans held for investment by year of origination and internally assigned credit grades: (in thousands) 2023 2022 2021 2020 2019 2018 Revolving lines of credit Revolving lines of credit converted to term loans Total December 31, 2023 Commercial (1-7) Pass $ 1,546,257 $ 1,408,672 $ 279,266 $ 144,699 $ 142,301 $ 157,808 $ 6,284,464 $ 16,580 $ 9,980,047 (8) Special mention 22,148 118,991 35,619 285 823 13,385 40,647 89 231,987 (9) Substandard - accruing 12,477 50,876 9,334 18,547 — 78 38,372 — 129,684 (9+) Non-accrual 9,395 34,229 340 2,085 15,080 7,840 79 — 69,048 Total commercial $ 1,590,277 $ 1,612,768 $ 324,559 $ 165,616 $ 158,204 $ 179,111 $ 6,363,562 $ 16,669 $ 10,410,766 Mortgage finance (1-7) Pass $ — $ — $ — $ — $ — $ — $ 3,978,328 $ — $ 3,978,328 (8) Special mention — — — — — — — — — (9) Substandard - accruing — — — — — — — — — (9+) Non-accrual — — — — — — — — — Total mortgage finance $ — $ — $ — $ — $ — $ — $ 3,978,328 $ — $ 3,978,328 Commercial real estate (1-7) Pass $ 561,801 $ 1,689,325 $ 1,042,953 $ 419,703 $ 317,480 $ 559,026 $ 575,928 $ 28,175 $ 5,194,391 (8) Special mention — 136,801 32,937 24,440 34,181 22,833 7,895 — 259,087 (9) Substandard - accruing — 2,232 — — — 28,573 4,141 — 34,946 (9+) Non-accrual — — 12,350 — — — — — 12,350 Total commercial real estate $ 561,801 $ 1,828,358 $ 1,088,240 $ 444,143 $ 351,661 $ 610,432 $ 587,964 $ 28,175 $ 5,500,774 Consumer (1-7) Pass $ 31,876 $ 56,425 $ 78,096 $ 47,423 $ 14,141 $ 102,691 $ 199,171 $ — $ 529,823 (8) Special mention — — — — — — 100 41 141 (9) Substandard - accruing — — — — — 984 — — 984 (9+) Non-accrual — — — — — — — — — Total consumer $ 31,876 $ 56,425 $ 78,096 $ 47,423 $ 14,141 $ 103,675 $ 199,271 $ 41 $ 530,948 Total $ 2,183,954 $ 3,497,551 $ 1,490,895 $ 657,182 $ 524,006 $ 893,218 $ 11,129,125 $ 44,885 $ 20,420,816 Gross charge-offs $ 8,364 $ 5,090 $ 25,578 $ — $ 15,243 $ 883 $ 698 $ 871 $ 56,727 (in thousands) 2022 2021 2020 2019 2018 2017 Revolving lines of credit Revolving lines of credit converted to term loans Total December 31, 2022 Commercial (1-7) Pass $ 2,022,950 $ 678,473 $ 240,511 $ 254,985 $ 322,099 $ 227,853 $ 5,694,352 $ 20,933 $ 9,462,156 (8) Special mention 9,141 7,740 3,628 37,794 11,998 4,975 95,310 2,250 172,836 (9) Substandard - accruing 18,670 71,147 514 1,666 14,933 6,305 37,407 — 150,642 (9+) Non-accrual 376 512 751 30,392 6,226 2,520 6,265 — 47,042 Total commercial $ 2,051,137 $ 757,872 $ 245,404 $ 324,837 $ 355,256 $ 241,653 $ 5,833,334 $ 23,183 $ 9,832,676 Mortgage finance (1-7) Pass $ — $ — $ — $ — $ — $ — $ 4,090,033 $ — $ 4,090,033 (8) Special mention — — — — — — — — — (9) Substandard - accruing — — — — — — — — — (9+) Non-accrual — — — — — — — — — Total mortgage finance $ — $ — $ — $ — $ — $ — $ 4,090,033 $ — $ 4,090,033 Commercial real estate (1-7) Pass $ 1,362,160 $ 958,669 $ 670,113 $ 520,970 $ 263,240 $ 448,536 $ 465,834 $ 43,237 $ 4,732,759 (8) Special mention 3,494 6,524 46,512 5,295 19,350 4,038 — — 85,213 (9) Substandard - accruing 7,840 17,850 — 247 11,458 18,733 — — 56,128 (9+) Non-accrual — — 1,081 — — 182 — — 1,263 Total commercial real estate $ 1,373,494 $ 983,043 $ 717,706 $ 526,512 $ 294,048 $ 471,489 $ 465,834 $ 43,237 $ 4,875,363 Consumer (1-7) Pass $ 69,320 $ 95,470 $ 57,060 $ 24,773 $ 20,055 $ 89,919 $ 196,088 $ 130 $ 552,815 (8) Special mention — — — — — — — — — (9) Substandard - accruing — — — — — — — — — (9+) Non-accrual — — — 33 — — — — 33 Total Consumer $ 69,320 $ 95,470 $ 57,060 $ 24,806 $ 20,055 $ 89,919 $ 196,088 $ 130 $ 552,848 Total $ 3,493,951 $ 1,836,385 $ 1,020,170 $ 876,155 $ 669,359 $ 803,061 $ 10,585,289 $ 66,550 $ 19,350,920 The following table details activity in the allowance for credit losses on loans. The changes made to the Company’s current expected credit loss model, as discussed above and in Note 1 - Operations and Summary of Significant Accounting Policies, resulted in a reallocation of the allowance for credit losses between loan portfolio segments and allowance balances allocated to off-balance sheet financial instruments, the results of which are included in the table below. The changes made result in a higher allocation of losses to off-balance sheet financial instruments. See Note 9 - Financial Instruments with Off-Balance Sheet Risk for information regarding the allowance for credit losses on off-balance sheet financial instruments. Allocation of a portion of the allowance to one category does not preclude its availability to absorb losses in other categories. (in thousands) Commercial Mortgage Commercial Real Estate Consumer Total Year Ended December 31, 2023 Beginning balance $ 185,303 $ 10,745 $ 54,268 $ 3,153 $ 253,469 Provision for credit losses on loans 31,529 (6,572) 23,057 (583) 47,431 Charge-offs 51,186 — 5,500 41 56,727 Recoveries 5,791 — 4 5 5,800 Net charge-offs (recoveries) 45,395 — 5,496 36 50,927 Ending balance $ 171,437 $ 4,173 $ 71,829 $ 2,534 $ 249,973 Year Ended December 31, 2022 Beginning balance $ 154,360 $ 6,083 $ 48,247 $ 3,176 $ 211,866 Provision for credit losses on loans 50,485 4,662 6,371 (46) 61,472 Charge-offs 23,219 — 350 — 23,569 Recoveries 3,677 — — 23 3,700 Net charge-offs (recoveries) 19,542 — 350 (23) 19,869 Ending balance $ 185,303 $ 10,745 $ 54,268 $ 3,153 $ 253,469 The Company recorded a $47.4 million provision for credit losses on loans for the year ended December 31, 2023, compared to $61.5 million for the same period of 2022. The $47.4 million provision for credit losses on loans resulted primarily from increases in total loans held for investment, criticized and non-accrual loans and net charge-offs during the year ended December 31, 2023. Net charge-offs of $50.9 million were recorded during the year ended December 31, 2023, compared to net charge-offs of $19.9 million during the same period of 2022. Criticized loans totaled $738.2 million at December 31, 2023 and $513.2 million at December 31, 2022. A loan is considered collateral-dependent when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. At December 31, 2023, the Company had $46.0 million in collateral-dependent commercial loans, collateralized by business assets, and $12.4 million in collateral-dependent commercial real estate loans, collateralized by real estate. The table below provides an age analysis of gross loans held for investment: (in thousands) 30-59 Days 60-89 Days 90 Days or More Past Due Total Past Non-accrual(1) Current Total Non-accrual With No Allowance December 31, 2023 Commercial $ 2,642 $ 9,584 $ 18,540 $ 30,766 $ 69,048 $ 10,310,952 $ 10,410,766 $ 7,773 Mortgage finance — — — — — 3,978,328 3,978,328 — Commercial real estate 679 4,140 — 4,819 12,350 5,483,605 5,500,774 — Consumer 1,290 — 983 2,273 — 528,675 530,948 — Total $ 4,611 $ 13,724 $ 19,523 $ 37,858 $ 81,398 $ 20,301,560 $ 20,420,816 $ 7,773 (1) As of December 31, 2023, $358,000 of non-accrual loans were earning interest income on a cash basis compared to $2.2 million as of December 31, 2022. Additionally, $37,000 and $801,000 of interest income was recognized on non-accrual loans for the years ended December 31, 2023 and 2022, respectively. Accrued interest of $3.0 million and $1.6 million was reversed during the years ended December 31, 2023 and December 31, 2022, respectively. Modifications to Borrowers Experiencing Financial Difficulty The Company adopted Accounting Standards Update (“ASU”) 2022-02, Financial Instruments - Credit Losses (Topic 326) Troubled Debt Restructurings and Vintage Disclosures (“ASU 2022-02”) effective January 1, 2023. The amendments in ASU 2022-02 eliminated the recognition and measurement of troubled debt restructurings and enhanced disclosures for loan modifications to borrowers experiencing financial difficulty. The table below details gross loans held for investment as of December 31, 2023 made to borrowers experiencing financial difficulty that were modified during the year ended December 31, 2023: (in thousands) Payment Term Payment Interest Rate Total Percentage of Commercial $ 30,873 $ 733 $ 5,458 $ 6,064 $ 43,128 0.21 % Commercial real estate — 21,364 — — 21,364 0.10 % Total $ 30,873 $ 22,097 $ 5,458 $ 6,064 $ 64,492 0.32 % The following table summarizes the financial impacts of loan modifications made to borrowers experiencing financial difficulty during the year ended December 31, 2023: Interest Rate Term Extension Total Payment Commercial 0.70% 4 to 36 $ 5,139 Commercial real estate —% 4 to 6 $ — During the year ended December 31, 2023, commercial loans totaling $6.3 million experienced a default subsequent to being granted a term extension modification in the prior twelve months. Default is defined as movement to nonperforming status, foreclosure or charge-off, whichever occurs first. The table below provides an age analysis of gross loans held for investment as of December 31, 2023 made to borrowers experiencing financial difficulty that were modified on or after January 1, 2023, the date the Company adopted ASU 2022-02: (in thousands) 30-89 Days 90+ Days Non-Accrual Current Total December 31, 2023 Commercial $ 7,617 $ — $ 11,601 $ 23,910 $ 43,128 Commercial real estate 4,141 — — 17,223 21,364 Total $ 11,758 $ — $ 11,601 $ 41,133 $ 64,492 Troubled Debt Restructuring Disclosures Prior to the Adoption of ASU 2022-02 The following table details the recorded investments of loans restructured during the year ended December 31, 2022. Extended Maturity Adjusted Payment Schedule Total (in thousands, except number of contracts) Number of Contracts Balance at Period End Number of Contracts Balance at Period End Number of Contracts Balance at Period End Year Ended December 31, 2022 Commercial — $ — 1 $ 531 1 $ 531 Total — $ — 1 $ 531 1 $ 531 As of December 31, 2022, the Company did not have any loans considered restructured that were not on non-accrual. Of the non-accrual loans at December 31, 2022, $531,000 met the criteria for restructured. These loans had no unfunded commitments at December 31, 2022.

Leases

Leases	12 Months Ended
	Dec. 31, 2023
Leases [Abstract]
Leases	Leases The following table presents ROU assets and lease liabilities: Year Ended December 31, (in thousands) 2023 2022 ROU assets: Finance leases $ 1,529 $ 2,865 Operating leases 87,810 79,889 Total $ 89,339 $ 82,754 Lease liabilities Finance leases $ 1,550 $ 2,877 Operating leases 109,523 103,814 Total $ 111,073 $ 106,691 As of December 31, 2023, operating leases had remaining lease terms of approximately 1 year to 16 years, while finance leases had remaining terms of approximately 1 year. The table below summarizes the Company’s net lease cost: Year Ended December 31, (in thousands) 2023 2022 Finance lease cost: Amortization of ROU assets $ 1,335 $ 1,108 Interest on lease liabilities 40 34 Operating lease cost 14,854 23,463 Short-term lease cost 37 19 Variable lease cost 7,168 5,122 Sublease income — (18) Net lease cost $ 23,434 $ 29,728 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases $ 40 $ 34 Operating cash flows from operating leases 17,203 21,910 Financing cash flows from finance leases 1,327 1,096 ROU assets obtained in exchange for new finance leases — 3,714 ROU assets obtained in exchange for new operating leases 18,741 57,544 The table below summarizes other information related to operating and finance leases: Year Ended December 31, 2023 2022 Weighted-average remaining lease term - finance leases, in years 1.2 2.2 Weighted-average remaining lease term - operating leases, in years 12.2 11.5 Weighted-average discount rate - finance leases 1.85 % 1.74 % Weighted-average discount rate - operating leases 4.43 % 4.16 % The table below summarizes the maturity of remaining lease liabilities as of December 31, 2023: (in thousands) Finance Leases Operating Leases Total 2024 $ 1,334 $ 13,622 $ 14,956 2025 237 11,027 11,264 2026 — 11,591 11,591 2027 — 11,543 11,543 2028 — 10,708 10,708 2028 and thereafter — 90,784 90,784 Total lease payments 1,571 149,275 150,846 Less: Interest (21) (39,752) (39,773) Present value of lease liabilities $ 1,550 $ 109,523 $ 111,073 As of December 31, 2023, the Company had $133.1 million of future payments for leases, primarily for banking centers and corporate offices, that have not yet commenced. These leases will commence during 2024, with lease terms ranging from 10 to 15 years.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises & Equipment Premises and equipment are summarized as follows: December 31, (in thousands) 2023 2022 Premises $ 39,547 $ 34,930 Furniture and equipment 63,367 54,581 Total cost 102,914 89,511 Accumulated depreciation (70,548) (63,129) Total premises and equipment, net $ 32,366 $ 26,382 Depreciation and amortization expense for the above premises and equipment was approximately $10.4 million, $9.5 million and $8.1 million in 2023, 2022 and 2021, respectively.

Deposits

Deposits	12 Months Ended
	Dec. 31, 2023
Deposits [Abstract]
Deposits	Deposits Deposits are summarized as follows: December 31, (in thousands) 2023 2022 Non-interest bearing deposits $ 7,328,276 $ 9,618,081 Interest bearing deposits: Transaction 2,264,055 683,562 Savings 11,000,783 11,042,658 Time 1,778,725 1,512,579 Total interest bearing deposits 15,043,563 13,238,799 Total deposits $ 22,371,839 $ 22,856,880 The scheduled maturities of interest bearing time deposits were as follows at December 31, 2023: (in thousands) 2024 $ 1,752,837 2025 24,102 2026 1,075 2027 664 2028 47 2028 and after — Total $ 1,778,725 At December 31, 2023 and 2022, interest bearing time deposits greater than $250,000 were approximately $376.4 million and $258.4 million, respectively.

Short-Term Borrowings and Long-

Short-Term Borrowings and Long-Term Debt	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Short-Term Borrowings and Long-Term Debt	Short-Term Borrowings and Long-Term Debt The table below presents a summary of the Company’s short-term borrowings, all of which mature within one year: (dollars in thousands) Federal Funds Purchased Customer Repurchase Agreements FHLB Borrowings December 31, 2023 Amount outstanding at year-end $ — $ — $ 1,500,000 Interest rate at year-end — % — % 5.64 % Average balance outstanding during the year $ — $ 25 $ 1,323,014 Weighted-average interest rate during the year — % 0.39 % 5.34 % Maximum month-end outstanding during the year $ — $ — $ 2,100,000 December 31, 2022 Amount outstanding at year-end $ — $ 1,142 $ 1,200,000 Interest rate at year-end — % 0.25 % 4.25 % Average balance outstanding during the year $ 30,741 $ 1,928 $ 1,797,082 Weighted-average interest rate during the year 1.17 % 0.28 % 1.60 % Maximum month-end outstanding during the year $ 525,000 $ 2,320 $ 2,650,000 The following table summarizes the Company’s short-term borrowing capacities net of balances outstanding: (in thousands) December 31, 2023 December 31, 2022 FHLB borrowing capacity relating to loans and pledged securities $ 2,602,092 $ 2,621,218 FHLB borrowing capacity relating to unencumbered securities 3,737,615 3,539,297 Total FHLB borrowing capacity(1) $ 6,339,707 $ 6,160,515 Unused federal funds lines available from commercial banks $ 1,188,000 $ 1,479,000 Unused Federal Reserve borrowings capacity $ 4,094,801 $ 3,574,762 Unused revolving line of credit(2) $ 100,000 $ 75,000 (1) FHLB borrowings are collateralized by a blanket floating lien on certain real estate secured loans, mortgage finance assets and certain pledged securities. (2) Unsecured revolving, non-amortizing line of credit with maturity date of February 8, 2025. Proceeds may be used for general corporate purposes, including funding regulatory capital infusions into the Bank. The loan agreement contains customary financial covenants and restrictions. No borrowings were made against this line of credit during the twelve months ended December 31, 2023 or 2022. The line of credit was reduced to $75.0 million in the first quarter of 2024. The table below presents a summary of long-term debt: (in thousands) December 31, 2023 December 31, 2022 Bank-issued floating rate senior unsecured credit-linked notes due 2024 $ 199,499 $ 272,492 Bank-issued 5.25% fixed rate subordinated notes due 2026 174,457 174,196 Company-issued 4.00% fixed rate subordinated notes due 2031 371,785 371,348 Trust preferred floating rate subordinated debentures due 2032 to 2036 113,406 113,406 Total long-term debt $ 859,147 $ 931,442 In the second quarter of 2023, the Company partially paid down $75.0 million of the senior unsecured credit-linked notes in accordance with the term of the notes. The following table summarizes the significant terms of the Company’s trust preferred subordinated debentures: (dollars in thousands) Texas Capital Texas Capital Texas Capital Texas Capital Texas Capital Date issued November 19, 2002 April 10, 2003 October 6, 2005 April 28, 2006 September 29, 2006 Trust preferred securities issued $10,310 $10,310 $25,774 $25,774 $41,238 Floating or fixed rate securities Floating Floating Floating Floating Floating Interest rate on subordinated debentures 3 month SOFR + 3.61% 3 month SOFR + 3.51% 3 month SOFR + 1.77% 3 month SOFR + 1.86% 3 month SOFR + 1.97% Maturity date November 2032 April 2033 December 2035 June 2036 December 2036

Financial Instruments with Off-

Financial Instruments with Off-Balance Sheet Risk	12 Months Ended
	Dec. 31, 2023
Risks and Uncertainties [Abstract]
Financial Instruments with Off-Balance Sheet Risk	Financial Instruments with Off-Balance Sheet Risk The table below presents the Company’s financial instruments with off-balance sheet risk, as well as the activity in the allowance for off-balance sheet credit losses related to those financial instruments. The changes made to the Company’s current expected credit loss model, as discussed in Note 1 - Operations and Summary of Significant Accounting Policies, resulted in a reallocation of the allowance for credit losses between loan portfolio segments and allowance balances allocated to off-balance sheet financial instruments, the results of which are included in the table below. The changes made result in a higher allocation of losses to off-balance sheet financial instruments. See Note 4 - Loans and Allowance for Credit Losses on Loans for information regarding the allowance for credit losses on loans. (in thousands) Commercial Mortgage Commercial Consumer Total Year Ended December 31, 2023 Beginning balance $ 16,550 $ — $ 5,222 $ 21 $ 21,793 Provision for off-balance sheet credit losses 19,490 6 4,925 148 24,569 Ending balance $ 36,040 $ 6 $ 10,147 $ 169 $ 46,362 Year Ended December 31, 2022 Beginning balance $ 15,107 $ — $ 2,136 $ 22 $ 17,265 Provision for off-balance sheet credit losses 1,443 — 3,086 (1) 4,528 Ending balance $ 16,550 $ — $ 5,222 $ 21 $ 21,793 (in thousands) December 31, 2023 December 31, 2022 Commitments to extend credit - period end balance $ 9,749,085 $ 9,673,082 Standby letters of credit - period end balance 595,079 417,896

Regulatory Ratios and Capital

Regulatory Ratios and Capital	12 Months Ended
	Dec. 31, 2023
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Regulatory Ratios and Capital	Regulatory Ratios and Capital 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 adverse effect on the Company’s and the Bank’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of the Company’s and the Bank’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The Company’s and the Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. The Basel III regulatory capital framework (the “Basel III Capital Rules”) adopted by U.S. federal regulatory authorities, among other things, (i) establishes the capital measure called “Common Equity Tier 1” (“CET1”), (ii) specifies that Tier 1 capital consist of CET1 and “Additional Tier 1 Capital” instruments meeting stated requirements, (iii) requires that most deductions/adjustments to regulatory capital measures be made to CET1 and not to other components of capital and (iv) defines the scope of the deductions/adjustments to the capital measures. Additionally, the Basel III Capital Rules require that the Company maintains a 2.5% capital conservation buffer with respect to each of CET1, Tier 1 and total capital to risk-weighted assets, which provides for capital levels that exceed the minimum risk-based capital adequacy requirements. A financial institution with a conservation buffer of less than the required amount is subject to limitations on capital distributions, including dividend payments and stock repurchases, and certain discretionary bonus payments to executive officers. No dividends were declared or paid on the Company’s common stock during 2023 or 2022. In January 2023, the Company completed the full $150.0 million of share repurchases authorized by the Company’s board of directors on April 19, 2022. On January 18, 2023, the Company’s board of directors authorized a new share repurchase program under which the Company could repurchase up to $150.0 million in shares of its outstanding common stock. During the year ended December 31, 2023, the Company repurchased 1,821,532 shares of its common stock for an aggregate price, including excise tax expense, of $105.0 million, at a weighted average price of $57.17 per share. On January 17, 2024, the Company’s board of directors authorized a new share repurchase program under which the Company may repurchase up to $150.0 million in shares of its outstanding common stock, which is set to expire on January 31, 2025. Remaining repurchase authorization under the January 18, 2023 share repurchase program was terminated upon authorization of this new program. In February 2019, the federal bank regulatory agencies issued a final rule (the “2019 CECL Rule”) that revised certain capital regulations to account for changes to credit loss accounting under GAAP. The 2019 CECL Rule included a transition option that allows banking organizations to phase in, over a three-year period, the day-one adverse effects of adopting the new accounting standard related to the measurement of current expected credit losses on their regulatory capital ratios (three-year transition option). In March 2020, the federal bank regulatory agencies issued an interim final rule that maintains the three-year transition option of the 2019 CECL Rule and also provides banking organizations that were required under GAAP to implement CECL before the end of 2020 the option to delay for two years an estimate of the effect of CECL on regulatory capital, relative to the incurred loss methodology's effect on regulatory capital, followed by a three-year transition period (five-year transition option). The Company adopted CECL on January 1, 2020 and have elected to utilize the five-year transition option. Quantitative measures established by regulation 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 December 31, 2023, that the Company and the Bank meet all capital adequacy requirements to which they are subject. Financial institutions are categorized as well capitalized based on total risk-based, Tier 1 risk-based, CET1 and Tier 1 leverage ratios. As shown in the table below, the Company’s and Bank’s capital ratios exceeded the regulatory definition of well capitalized as of December 31, 2023 and December 31, 2022. The regulatory authorities can apply changes in the classification of assets and such changes may retroactively subject the Company and the Bank to changes in capital ratios. Any such change could reduce one or more capital ratios below well capitalized status. In addition, a change may result in imposition of additional assessments by the Federal Deposit Insurance Corporation (“FDIC”) or could result in regulatory actions that could have a material effect on the Bank’s condition and results of operations. Because the Bank had less than $15.0 billion in total consolidated assets as of December 31, 2009, it is allowed to continue to classify the trust preferred securities, all of which were issued prior to May 19, 2010, as Tier 1 capital. At the beginning of each of the last five years of the life of the Bank-issued fixed rate subordinated notes due 2026, the amount that is eligible to be included in Tier 2 capital is reduced by 20% of the original amount of the notes (net of redemptions). In 2023, the amount of the notes that qualify as Tier 2 capital has been reduced by 60%. The table below summarizes the Company’s and the Bank’s actual and required capital ratios under the Basel III Capital Rules. The ratios presented below include the effects of the election to utilize the five-year CECL transition described above. Actual Minimum Capital Required(2) Capital Required to be Well Capitalized (dollars in thousands) Capital Amount Ratio Capital Amount Ratio Capital Amount Ratio December 31, 2023 CET1 Company $ 3,264,609 12.65 % $ 1,806,644 7.00 % N/A N/A Bank 3,599,919 14.01 % 1,798,495 7.00 % 1,670,031 6.50 % Total capital (to risk-weighted assets) Company 4,405,575 17.07 % 2,709,965 10.50 % 2,580,919 10.00 % Bank 3,959,100 15.41 % 2,697,742 10.50 % 2,569,278 10.00 % Tier 1 capital (to risk-weighted assets) Company 3,674,609 14.24 % 2,193,781 8.50 % 1,548,552 6.00 % Bank 3,599,919 14.01 % 2,183,886 8.50 % 2,055,422 8.00 % Tier 1 capital (to average assets)(1) Company 3,674,609 12.21 % 1,204,192 4.00 % N/A N/A Bank 3,599,919 12.00 % 1,200,091 4.00 % 1,500,113 5.00 % December 31, 2022 CET1 Company $ 3,180,208 13.00 % $ 1,712,608 7.00 % N/A N/A Bank 3,408,178 13.95 % 1,710,056 7.00 % 1,587,909 6.50 % Total capital (to risk-weighted assets) Company 4,331,098 17.70 % 2,568,912 10.50 % 2,446,583 10.00 % Bank 3,987,720 16.32 % 2,565,083 10.50 % 2,442,937 10.00 % Tier 1 capital (to risk-weighted assets) Company 3,590,208 14.67 % 2,079,595 8.50 % 1,467,950 6.00 % Bank 3,568,178 14.61 % 2,076,496 8.50 % 1,954,349 8.00 % Tier 1 capital (to average assets)(1) Company 3,590,208 11.54 % 1,244,494 4.00 % N/A N/A Bank 3,568,178 11.48 % 1,243,232 4.00 % 1,554,039 5.00 % (1) The Tier 1 capital ratio (to average assets) is not impacted by the Basel III Capital Rules; however, the Federal Reserve Board and the FDIC may require the Company and the Bank, respectively, to maintain a Tier 1 capital ratio (to average assets) above the required minimum. (2) Percentages represent the minimum capital ratios plus, as applicable, the fully phased-in 2.5% CET1 capital buffer under the Basel III Capital Rules. The Company is required to maintain reserve balances in cash and on deposit with the Federal Reserve based on a percentage of transactional deposits; however, the Federal Reserve reduced the reserve requirement ratio to zero effective March 26, 2020, therefore the total requirement was zero at both December 31, 2023 and December 31, 2022.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2023
Compensation Related Costs [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Company has a qualified retirement plan with a salary deferral feature designed to qualify under Section 401 of the Internal Revenue Code (“the 401(k) Plan”). The 401(k) Plan permits employees to defer a portion of their compensation. Matching contributions may be made in amounts and at times determined by the Company. These contributions were approximately $15.2 million, $13.3 million and $10.2 million for the years ended December 31, 2023, 2022 and 2021, respectively. Employees are eligible to participate in the 401(k) Plan when they meet certain requirements concerning minimum age and period of credited service. All contributions to the 401(k) Plan are invested in accordance with participant elections among certain investment options. The Company also offers a non-qualified deferred compensation plan for executives and key members of management in order to assist in attracting and retaining these individuals. Participants in the plan may elect to defer up to 75% of their annual salary and/or short-term incentive payout into deferral accounts that mirror the gains or losses of investments selected by the participants. The plan allows the Company to make discretionary contributions on behalf of a participant as well as matching contributions. The Company did not make any matching contributions in 2023 or 2022, compared to $274,000 in 2021. All participant contributions to the plan and any related earnings are immediately vested and may be withdrawn upon the participant's separation from service, death or disability or upon a date specified by the participant. Salary deferrals are recorded as salaries and employee benefits expense on the consolidated statements of income with an offsetting payable to participants in other liabilities on the consolidated balance sheets. The Company has an Employee Stock Purchase Plan (“ESPP”). Employees are eligible for the ESPP when they meet certain requirements concerning period of credited service and minimum hours worked. Eligible employees may contribute between 1% and 10% of eligible compensation up to the Section 423 of the Internal Revenue Code limit of $25,000. In 2006, stockholders approved the ESPP, which allocated 400,000 shares for purchase. As of December 31, 2023, 2022 and 2021, 210,558, 184,263 and 164,033 shares, respectively, had been purchased on behalf of employees under the ESPP. The Company has 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 and may be settled in shares of common stock or paid in cash. Under the plans, the Company may grant, among other things, non-qualified stock options, incentive stock options, restricted stock, restricted stock units (“RSUs”), stock appreciation rights (“SARs”), performance awards or any combination thereof to employees and non-employee directors. A total of 1,400,000 shares are authorized for grant under the current plan. Total shares remaining available for grant under the current plan at December 31, 2023 were 861,366. A summary of the Company’s SAR activity and related information is as follows. Grants of SARs include time-based vesting conditions that generally vest ratably over a period of five years. December 31, 2023 December 31, 2022 December 31, 2021 SARs Weighted Average Exercise Price SARs Weighted Average Exercise Price SARs Weighted Average Exercise Price Outstanding at beginning of year — $ — 3,000 $ 44.20 12,400 $ 43.48 Exercised — — (3,000) 44.20 (9,400) 43.24 Outstanding at year-end — $ — — $ — 3,000 $ 44.20 Vested and exercisable at year-end — $ — — $ — 3,000 $ 44.20 Weighted average remaining contractual life of vested (in years) 0.00 0.00 1.66 Weighted average remaining contractual life of outstanding (in years) 0.00 0.00 1.66 Compensation expense $ — $ — $ — Unrecognized compensation expense $ — $ — $ — Intrinsic value of exercised $ — $ 64,000 $ 302,000 A summary of the Company’s RSU activity and related information is as follows. Grants of RSUs include time-based vesting conditions that generally vest ratably over a period of three three December 31, 2023 December 31, 2022 December 31, 2021 RSUs Weighted RSUs Weighted RSUs Weighted Outstanding at beginning of year 1,155,652 $ 61.12 1,206,862 $ 56.06 955,594 $ 48.76 Granted 405,434 68.63 453,323 68.15 677,472 66.31 Vested (355,046) 50.79 (308,771) 54.51 (187,530) 58.82 Forfeited (124,361) 66.98 (195,762) 58.42 (238,674) 53.76 Outstanding at year-end 1,081,679 $ 66.91 1,155,652 $ 61.12 1,206,862 $ 56.06 Compensation expense $ 24,200,000 $ 21,246,000 $ 30,060,000 Unrecognized compensation expense $ 28,585,000 $ 32,148,000 $ 32,525,000 Weighted average years over which unrecognized compensation expense is expected to be recognized 1.89 2.31 2.79 Fair value of shares vested during the year $ 18,117,000 $ 16,835,000 $ 11,030,000 Intrinsic value of shares vested during the year $ 20,125,000 $ 18,640,000 $ 12,870,000 The Company may make grants of restricted common stock to various non-employee directors as to which restrictions lapse ratably over a period of three years. No grants of restricted stock were made during 2023, 2022 or 2021 and no compensation expense was recorded during 2023 or 2022, compared to compensation expense of $1,000 for the year ended December 31, 2021. As of December 31, 2023, there were no remaining restrictions on any grants of restricted common stock. Total compensation cost for grants of stock-settled units was $24.2 million, $21.2 million and $30.1 million for the years ended December 31, 2023, 2022 and 2021, respectively. The Company did not have cash-settled RSUs outstanding at December 31, 2023. No grants of cash-settled RSUs were made in 2023, 2022 or 2021. Since these units have a cash payout feature, they are accounted for under the liability method with related expense based on the stock price at period end. No compensation expense for cash-settled units was recorded for the year ended December 31, 2023, compared to $186,000 and $1.3 million for the years ended December 31, 2022 and 2021, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense/(benefit) consists of the following: Year ended December 31, (in thousands) 2023 2022 2021 Current: Federal $ 69,350 $ 109,370 $ 97,608 State 5,888 7,302 6,761 Total 75,238 116,672 104,369 Deferred: Federal (16,540) (16,178) (19,020) State (1,244) (1,217) (1,233) Total (17,784) (17,395) (20,253) Total expense: Federal 52,810 93,192 78,588 State 4,644 6,085 5,528 Total $ 57,454 $ 99,277 $ 84,116 The reconciliation of income tax at the U.S. federal statutory tax rate to income tax expense and effective tax rate is as follows: Year ended December 31, 2023 2022 2021 (dollars in thousands) Amount Rate Amount Rate Amount Rate U.S. statutory rate $ 51,785 21 % $ 90,669 21 % $ 70,992 21 % State taxes 2,938 1 % 6,822 2 % 4,108 1 % Tax-exempt income (350) — % (1,061) — % (1,855) (1) % Tax credits (855) — % (128) — % (179) — % Disallowed FDIC 1,863 1 % 1,491 — % 2,936 1 % Disallowed compensation 1,176 — % 2,771 1 % 6,377 2 % Other 897 — % (1,287) (1) % 1,737 1 % Total $ 57,454 23 % $ 99,277 23 % $ 84,116 25 % At December 31, 2023, 2022 and 2021, the Company had unrecognized tax benefits of $1.0 million, $889,000 and $722,000, respectively. The Company is no longer subject to U.S. federal income tax examinations for years before 2020 or state and local income tax examinations for years before 2019. The table below summarizes significant components of deferred tax assets and liabilities utilizing the federal corporate income tax rate of 21%. Management believes it is more likely than not that all of the deferred tax assets will be realized. December 31, (in thousands) 2023 2022 Deferred tax assets: Allowance for credit losses $ 66,913 $ 62,154 Lease liabilities 25,080 24,091 Loan origination fees 14,928 14,385 Stock compensation 6,216 5,031 Non-accrual interest 1,672 1,132 Non-qualified deferred compensation 4,603 4,782 Net unrealized losses in AOCI 96,229 111,365 Other 15,079 4,678 Total deferred tax assets 230,720 227,618 Deferred tax liabilities: Loan origination costs (1,551) (3,217) Leases (9,741) (12,863) Lease ROU assets (21,225) (19,807) Depreciation (12,414) (9,034) Other (728) (284) Total deferred tax liabilities (45,659) (45,205) Net deferred tax asset $ 185,061 $ 182,413

Fair Value Disclosures

Fair Value Disclosures	12 Months Ended
	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Fair Value Disclosures	Fair Value Disclosures The Company determines the fair market values of its assets and liabilities measured at fair value on a recurring and nonrecurring basis using the fair value hierarchy as prescribed in ASC 820. See Note 1 - Operations and Summary of Significant Accounting Policies for information regarding the fair value hierarchy and a description of the methods and significant assumptions used by the Company in estimating its fair value disclosures for financial statements. Assets and liabilities measured at fair value are as follows: Fair Value Measurements Using (in thousands) Level 1 Level 2 Level 3 December 31, 2023 Available-for-sale debt securities:(1) U.S. Treasury securities $ 636,473 $ — $ — U.S. government agency securities — 106,592 — Residential mortgage-backed securities — 2,470,832 — CRT securities — — 11,995 Equity securities(1)(2) 40,661 11,164 — Mortgage loans held for sale(3) — 706 — Loans held for investment(4) — — 38,341 Derivative assets(5) — 32,944 — Securities sold not yet purchased(6) 10,602 — — Derivative liabilities(5) — 70,917 — Non-qualified deferred compensation plan liabilities(7) 20,387 — — December 31, 2022 Available-for-sale debt securities:(1) U.S. Treasury securities $ 670,582 $ — $ — U.S. government agency securities — 102,154 — Residential mortgage-backed securities — 1,831,047 — CRT securities — — 11,861 Equity securities(1)(2) 22,879 11,077 — Derivative assets(5) — 13,504 — Derivative liabilities(5) — 91,758 — Non-qualified deferred compensation plan liabilities(7) 21,177 — — (1) Investment securities are measured at fair value on a recurring basis, generally monthly. (2) Equity securities consist of investments that qualify for consideration under the regulations implementing the Community Reinvestment Act and investments in exchange traded funds. (3) Loans held for sale are measured at fair value on a recurring basis, generally monthly. (4) Includes certain collateral-dependent loans held for investment for which a specific allocation of the allowance for credit losses is based upon the fair value of the loan’s underlying collateral. These loans held for investment are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions. (5) Derivative assets and liabilities are measured at fair value on a recurring basis, generally quarterly. (6) Securities sold not yet purchased are measured at fair value on a recurring basis, generally monthly. (7) Non-qualified deferred compensation plan liabilities represent the fair value of the obligation to the employee, which generally corresponds to the fair value of the invested assets, and are measured at fair value on a recurring basis, generally monthly. Level 3 Valuations The following table presents a reconciliation of the level 3 fair value category measured at fair value on a recurring basis: Net Gains/(Losses) (in thousands) Balance at Beginning of Period Purchases / Additions Sales / Reductions Realized Unrealized Balance at End of Period Year Ended December 31, 2023 Available-for-sale debt securities:(1) CRT securities $ 11,861 $ — $ (1,077) $ — $ 1,211 $ 11,995 Year Ended December 31, 2022 Available-for-sale debt securities:(1) Tax-exempt asset-backed securities $ 180,033 $ — $ (170,626) $ — $ (9,407) $ — CRT securities 11,846 — — — 15 11,861 Loans held for sale(2) 7,658 1,569 (8,132) (1,095) — — (1) Unrealized gains/(losses) on available-for-sale debt securities are recorded in AOCI other non-interest income (2) Realized and unrealized gains/(losses) on loans held for sale are recorded in other non-interest income CRT securities The fair value of CRT securities is based on a discounted cash flow model, which utilizes Level 3, or unobservable, inputs, the most significant of which were a discount rate and weighted-average life. At December 31, 2023, the discount rates utilized ranged from 5.55% to 8.40% and the weighted-average life ranged from 5.16 years to 7.67 years. On a combined amortized cost weighted-average basis a discount rate of 6.57% and a weighted-average life of 6.06 years were utilized to determine the fair value of these securities at December 31, 2023. At December 31, 2022, the combined weighted-average discount rate and weighted-average life utilized were 8.24% and 6.26 years, respectively. Loans held for investment Certain collateral-dependent loans held for investment are reported at fair value when, based upon an individual evaluation, the specific allocation of the allowance for credit losses that is deducted from the loan's amortized cost is based upon the fair value of the loan's underlying collateral. The $38.3 million fair value of loans held for investment at December 31, 2023 reported above includes impaired loans with a carrying value of $58.3 million that were reduced by specific allowance allocations totaling $20.0 million based on collateral valuations utilizing Level 3 inputs. There were no collateral-dependent loans held for investment reported at fair value at December 31, 2022. Fair Value of Financial Instruments A summary of the carrying amounts and estimated fair values of financial instruments is as follows: Carrying Estimated Fair Value (in thousands) Total Level 1 Level 2 Level 3 December 31, 2023 Financial assets: Cash and cash equivalents $ 3,242,850 $ 3,242,850 $ 3,242,850 $ — $ — Available-for-sale debt securities 3,225,892 3,225,892 636,473 2,577,424 11,995 Held-to-maturity debt securities 865,477 763,844 — 763,844 — Equity securities 51,825 51,825 40,661 11,164 — Loans held for sale 44,105 44,105 15,000 29,105 — Loans held for investment, net 20,090,585 20,050,974 — — 20,050,974 Derivative assets 32,944 32,944 — 32,944 — Financial liabilities: Total deposits 22,371,839 22,379,452 — — 22,379,452 Short-term borrowings 1,500,000 1,500,000 — 1,500,000 — Long-term debt 859,147 801,309 — 801,309 — Securities sold not yet purchased 10,602 10,602 10,602 — — Derivative liabilities 70,917 70,917 — 70,917 — December 31, 2022 Financial assets: Cash and cash equivalents $ 5,012,260 $ 5,012,260 $ 5,012,260 $ — $ — Available-for-sale debt securities 2,615,644 2,615,644 670,582 1,933,201 11,861 Held-to-maturity debt securities 935,514 816,914 — 816,914 — Equity securities 33,956 33,956 22,879 11,077 — Loans held for sale 36,357 36,357 — — 36,357 Loans held for investment, net 19,033,871 18,969,922 — — 18,969,922 Derivative assets 13,504 13,504 — 13,504 — Financial liabilities: Total deposits 22,856,880 22,857,949 — — 22,857,949 Short-term borrowings 1,201,142 1,201,142 — 1,201,142 — Long-term debt 931,442 881,716 — 881,716 — Derivative liabilities 91,758 91,758 — 91,758 —

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments The notional amounts and estimated fair values of derivative positions outstanding are presented in the following table. December 31, 2023 December 31, 2022 Estimated Fair Value Estimated Fair Value (in thousands) Notional Asset Derivative Liability Derivative Notional Asset Derivative Liability Derivative Derivatives designated as hedges Cash flow hedges: Interest rate contracts: Swaps hedging loans $ 2,850,000 $ 668 $ 57,961 $ 3,000,000 $ — $ 86,378 Non-hedging derivatives Customer-initiated and other derivatives: Foreign currency forward contracts 4,824 52 31 — — — Interest rate contracts: Swaps 5,673,822 65,247 69,863 4,396,367 83,529 83,529 Caps and floors written 637,971 1,654 2,228 220,142 — 2,583 Caps and floors purchased 637,971 2,228 1,654 220,142 2,583 — Forward contracts 8,665,675 39,123 38,570 1,569,326 4,431 4,053 Gross derivatives 108,972 170,307 90,543 176,543 Netting adjustment - offsetting derivative assets/liabilities (37,346) (37,346) (5,164) (5,164) Netting adjustment - cash collateral received/posted (38,682) (62,044) (71,875) (79,621) Net derivatives included on the consolidated balance sheets $ 32,944 $ 70,917 $ 13,504 $ 91,758 The Company’s credit exposure on derivative instruments is limited to the net favorable value and interest payments by each counterparty. In some cases, collateral may be required from the counterparties involved if the net value of the derivative instruments exceeds a nominal amount. The Company’s credit exposure associated with these instruments, net of any collateral pledged, was approximately $32.9 million at December 31, 2023 and approximately $13.5 million at December 31, 2022. Collateral levels are monitored and adjusted on a regular basis for changes in the value of derivative instruments. At December 31, 2023, the Company had $119.0 million in cash collateral pledged to counterparties included in interest bearing cash and cash equivalents on the consolidated balance sheet and $42.3 million in cash collateral received from counterparties included in interest bearing deposits on the consolidated balance sheet. The comparative amounts at December 31, 2022, were $89.2 million in cash collateral pledged to counterparties and $72.5 million cash collateral received from counterparties. The Company also enters into credit risk participation agreements with financial institution counterparties for interest rate swaps related to loans in which the Company is either a participant or a lead bank. The risk participation agreements entered into by the Company as a participant bank provide credit protection to the financial institution counterparty should the borrower fail to perform on its interest rate derivative contract with that financial institution. The Company is party to 14 risk participation agreements where it acts as a participant bank with a notional amount of $230.7 million at December 31, 2023, compared to 19 risk participation agreements with a notional amount of $291.2 million at December 31, 2022. The maximum estimated exposure to these agreements, assuming 100% default by all obligors, was approximately $4.5 million at December 31, 2023 and $8.9 million at December 31, 2022. The fair value of these exposures was insignificant to the consolidated financial statements at both December 31, 2023 and December 31, 2022. Risk participation agreements entered into by the Company as the lead bank provide credit protection should the borrower fail to perform on its interest rate derivative contract. The Company is party to 15 risk participation agreements where the Company acts as the lead bank having a notional amount of $204.8 million at December 31, 2023, compared to 18 agreements having a notional amount of $222.0 million at December 31, 2022. Derivatives Designated as Cash Flow Hedges The Company enters into interest rate derivative contracts that are designated as qualifying cash flow hedges to hedge the exposure to variability in expected future cash flows attributable to changes in a contractually specified interest rate. During the year ended December 31, 2023, the Company recorded $34.8 million in unrealized losses to adjust its cash flow hedges to fair value, which was recorded net of tax to AOCI, and reclassified $60.9 million from AOCI as a decrease to interest income on loans. Based on current market conditions, the Company estimates that during the next 12 months, an additional $53.1 million related to active and terminated hedges will be reclassified from AOCI as a decrease to interest income. As of December 31, 2023, the maximum length of time over which forecasted transactions are hedged is 2.17.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income The following table provides the change in AOCI by component: (in thousands) Cash Flow Hedges Available-for-Sale Securities Held-to-Maturity Securities Total Year Ended December 31, 2023 Beginning balance $ (66,394) $ (304,309) $ (48,240) $ (418,943) Change in unrealized gain/(loss) (34,778) 38,612 — 3,834 Amounts reclassified into net income 60,911 — 7,330 68,241 Total other comprehensive income/(loss) 26,133 38,612 7,330 72,075 Income tax expense/(benefit) 5,488 8,109 1,539 15,136 Total other comprehensive income/(loss), net of tax 20,645 30,503 5,791 56,939 Ending balance $ (45,749) $ (273,806) $ (42,449) $ (362,004) Year Ended December 31, 2022 Beginning balance $ — $ (47,715) $ — $ (47,715) Change in unrealized gain/(loss) (85,846) (324,803) (69,165) (479,814) Amounts reclassified into net income 1,803 — 8,102 9,905 Total other comprehensive income/(loss) (84,043) (324,803) (61,063) (469,909) Income tax expense/(benefit) (17,649) (68,209) (12,823) (98,681) Total other comprehensive income/(loss), net of tax (66,394) (256,594) (48,240) (371,228) Ending balance $ (66,394) $ (304,309) $ (48,240) $ (418,943)

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2023
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions During 2023 and 2022, the Company had transactions with its directors, executive officers and their affiliates and its employees. These transactions were made in the ordinary course of business and include extensions of credit and deposit transactions, all made on the same terms as the then prevailing market and credit terms extended to other customers. The Bank had approximately $35.8 million in deposits from related parties, including directors, stockholders and their affiliates at December 31, 2023 and $23.1 million at December 31, 2022.

Parent Company Only

Parent Company Only	12 Months Ended
	Dec. 31, 2023
Condensed Financial Information Disclosure [Abstract]
Parent Company Only	Parent Company Only Summarized financial information for Texas Capital Bancshares, Inc. are as follows: Balance Sheet December 31, (in thousands) 2023 2022 Assets Cash and cash equivalents $ 301,672 $ 245,777 Investment securities 18,845 — Investment in subsidiaries 3,306,095 3,183,767 Other assets 55,949 93,395 Total assets $ 3,682,561 $ 3,522,939 Liabilities and Stockholders’ Equity Liabilities: Other liabilities $ 23,695 $ 6,754 Long-term debt 485,191 484,754 Total liabilities 508,886 491,508 Stockholders’ Equity: Preferred stock 300,000 300,000 Common stock 511 509 Additional paid-in capital 1,045,576 1,025,593 Retained earnings 2,409,926 2,239,582 Treasury stock (220,334) (115,310) Accumulated other comprehensive income/(loss) (362,004) (418,943) Total stockholders’ equity 3,173,675 3,031,431 Total liabilities and stockholders’ equity $ 3,682,561 $ 3,522,939 Statement of Income Year ended December 31, (in thousands) 2023 2022 2021 Interest on notes receivable $ 2,167 $ 3,250 $ 3,404 Dividend income 7,671 10,529 10,472 Other income (94) 9 5 Total income 9,744 13,788 13,881 Interest expense 23,714 19,721 15,946 Salaries and benefits 835 782 720 Legal and professional 1,504 1,583 1,803 Other non-interest expense 1,823 1,636 4,375 Total expense 27,876 23,722 22,844 Loss before income taxes and equity in undistributed income of subsidiary (18,132) (9,934) (8,963) Income tax benefit (4,537) (2,282) (2,179) Loss before equity in undistributed income of subsidiary (13,595) (7,652) (6,784) Equity in undistributed income of subsidiary 201,189 337,946 258,539 Net income 187,594 330,294 251,755 Preferred stock dividends 17,250 17,250 18,721 Net income available to common stockholders $ 170,344 $ 313,044 $ 233,034 Statements of Cash Flows Year ended December 31, (in thousands) 2023 2022 2021 Operating Activities Net income $ 187,594 $ 330,294 $ 251,755 Adjustments to reconcile net income to net cash provided by/(used in) operating activities: Equity in undistributed income of subsidiary (201,189) (337,946) (258,539) Amortization expense 437 438 2,469 Changes in operating assets and liabilities: Accrued interest receivable and other assets 36,938 (2,095) (1,750) Accrued interest payable and other liabilities 16,941 3,086 2,348 Net cash used in operating activities 40,721 (6,223) (3,717) Investing Activities Sales/(purchases) of equity securities, net (18,337) — — Net decrease in loans held for investment — — 7,500 Repayments of investments in/(advances to) subsidiaries 160,000 (50,000) — Net cash provided by/(used in) investing activities 141,663 (50,000) 7,500 Financing Activities Issuance of stock related to stock-based awards (4,215) (4,209) (3,121) Net proceeds from issuance of preferred stock — — 289,723 Redemption of preferred stock — — (150,000) Preferred stock dividends paid (17,250) (17,250) (18,721) Repurchase of common stock (105,024) (115,302) — Redemption of long-term debt — — (111,000) Net proceeds from Issuance of long-term debt — — 370,625 Net cash provided by/(used in) financing activities (126,489) (136,761) 377,506 Net increase/(decrease) in cash and cash equivalents 55,895 (192,984) 381,289 Cash and cash equivalents at beginning of year 245,777 438,761 57,472 Cash and cash equivalents at end of year $ 301,672 $ 245,777 $ 438,761

New Accounting Standards

New Accounting Standards	12 Months Ended
	Dec. 31, 2023
Accounting Standards Update and Change in Accounting Principle [Abstract]
New Accounting Standards	New Accounting Standards ASU 2023-06 “Disclosure Improvements” (“ASU 2023-06”) amends the disclosure or presentation requirements related to various subtopics in the FASB Accounting Standards Codification (the “Codification”). ASU 2023-06 was issued in response to the SEC’s initiative to update and simplify disclosure requirements. The SEC identified 27 disclosure requirements that were incremental to those in the Codification and referred them to the FASB for potential incorporation into U.S. GAAP. To avoid duplication, the SEC intended to eliminate those disclosure requirements from existing SEC regulations as the FASB incorporated them into the relevant Codification subtopics. ASU 2023-06 adds 14 of the 27 identified disclosure or presentation requirements to the Codification. ASU 2023-06 is to be applied prospectively, and early adoption is prohibited. For reporting entities subject to the SEC’s existing disclosure requirements, the effective dates of ASU 2023-06 will be the date on which the SEC’s removal of that related disclosure requirement from Regulation S-X or Regulation S-K becomes effective. If by June 30, 2027, the SEC has not removed the applicable requirement from Regulation S-X or Regulation S-K, the pending content of the related amendment will be removed from the Codification and will not become effective for any entities. ASU 2023-06 is not expected to have a significant impact on our financial statements. ASU 2023-07 “Segment Reporting (Topic 280) - Improvement to Reportable Segment Disclosures” (“ASU 2023-07”) amends the disclosure requirements related to segment reporting primarily through enhanced disclosure about significant segment expenses and by requiring disclosure of segment information on an annual and interim basis. ASU 2023-07 is effective January 1, 2024 and is not expected to have a significant impact on our financial statements. ASU 2023-09 “Income Taxes (Topic 740) - Improvements to Income Tax Disclosures” (“ASU 2023-09”) enhances the transparency and decision usefulness of income tax disclosures. ASU 2023-09 will require disaggregated information about a reporting entity’s effective tax rate reconciliation as well as information on income taxes paid. Entities will also be required to disclose income/(loss) from continuing operations before income tax expense/(benefit) disaggregated between domestic and foreign, as well as income tax expense/(benefit) from continuing operations disaggregated by federal, state and foreign. ASU 2023-09 is effective January 1, 2025 and is not expected to have a significant impact on our financial statements.

Operations and Summary of Sig_2

Operations and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Nature of Business	Organization and Nature of Business Texas Capital Bancshares, Inc. (“TCBI” or the “Company”), a Delaware corporation, was incorporated in 1996 and commenced banking operations in 1998. The consolidated financial statements include the accounts of TCBI and its wholly owned subsidiary, Texas Capital Bank (the “Bank”), a full-service financial services firm that delivers customized solutions to businesses, entrepreneurs and individual customers. The Company is headquartered in Dallas, with primary banking offices in Austin, Dallas, Fort Worth, Houston and San Antonio, and has built a network of clients across the country.
Basis of Presentation	Basis of Presentation The Company’s 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.
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 credit losses, the fair value of financial instruments and the status of contingencies are particularly susceptible to significant change. In the second quarter of 2023, changes were made to certain estimates used in the Company’s current expected credit loss model, the most significant of which are more granular estimates of historical loss rates to incorporate probability of default and loss severities and allocations of expected losses to outstanding loan balances and off-balance sheet financial instruments. As a result of these changes, corresponding adjustments were also made to the Company’s portfolio segments to appropriately pool loans with similar risk characteristics and to the speed at which the Company reverts to historical loss rates for periods beyond which management is able to develop reasonable and supportable forecasts. See the Allowance for Credit Losses accounting policy below for additional details of these changes.
Basic and Diluted Earnings Per Common Share	Basic and Diluted Earnings Per Common Share Basic earnings per common share is based on net income available to common stockholders divided by the weighted-average number of common shares outstanding during the period excluding non-vested stock-settled awards. Diluted earnings per common share include the dilutive effect of non-vested stock-settled awards granted using the treasury stock method.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash equivalents include amounts due from banks, interest bearing deposits in other banks and federal funds sold.
Investment Securities	Investment Securities Investment securities include debt securities and equity securities. Debt Securities Debt securities are classified as trading, available-for-sale or held-to-maturity. Debt securities not classified as held-to-maturity or trading are classified as available-for-sale. Management classifies securities at the time of purchase and re-assesses such designation at each balance sheet date. The amortized cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity, or in the case of mortgage-backed securities, over the estimated life of the security. Such amortization and accretion are included in interest income from investment securities. Gains or losses realized upon the sale of debt securities is recorded in other non-interest income on the consolidated statements of income and other comprehensive income. The cost of securities sold is based on the specific identification method. The Company has made a policy election to exclude accrued interest from the amortized cost basis of debt securities and report accrued interest separately in accrued interest and other assets on the consolidated balance sheets. Available-for-sale and held-to-maturity debt securities are placed on non-accrual status when management no longer expects to receive all contractual amounts due, which is generally at 90 days past due. Accrued interest receivable is reversed against interest income when a security is placed on non-accrual status. Accordingly, the Company does not recognize an allowance for credit loss against accrued interest receivable. Trading Account Debt securities acquired for resale in anticipation of short-term market movements are classified as trading and recorded at fair value, with realized and unrealized gains and losses recognized in income. Held-to-Maturity Debt securities are classified as held-to-maturity when the Company has the positive intent and ability to hold the securities to maturity. Held-to-maturity securities are stated at amortized cost, net of any allowance for credit losses. Management may transfer debt securities classified as available-for-sale to held-to-maturity when upon reassessment it is determined that the Company has both the positive intent and ability to hold these securities to maturity. The debt securities are transferred at fair value resulting in a premium or discount recorded on transfer date. Unrealized gains or losses at the date of transfer continue to be reported as a separate component of accumulated other comprehensive income/loss, net (“AOCI”). The premium or discount and the unrealized gain or loss, net of tax, in AOCI will be amortized to interest income over the remaining life of the securities using the interest method. Available-for-Sale Available-for-sale debt securities are recorded at fair value, with unrealized gains and losses, net of tax, reported as a separate component of AOCI. For available-for-sale debt securities in an unrealized loss position, the Company first assesses whether it intends to sell, or it is more-likely-than-not that it will be required to sell, the securities before recovery of the amortized cost basis. If either of these criteria is met, the securities’ amortized cost basis is written down to fair value as a current period expense recorded on the consolidated statements of income and other comprehensive income. If either of the above criteria is not met, management evaluates whether the decline in fair value is the result of credit losses or other factors. In making this assessment, management may consider various factors including the extent to which fair value is less than amortized cost, performance of any underlying collateral and adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected are compared to the amortized cost basis of the security and any excess is recorded as an allowance for credit losses, limited to the amount by which the fair value is less than the amortized cost basis. Any impairment not recorded through an allowance for credit losses is recognized in AOCI, net of tax, as a non-credit related impairment. Included in debt securities available-for-sale are credit risk transfer (“CRT”) securities, which represent unsecured obligations issued by government sponsored entities (“GSEs”) such as Freddie Mac and are designed to transfer mortgage credit risk from the GSE to private investors. CRT securities are structured to be subject to the performance of a reference pool of mortgage loans in which the Company shares in 50% of the first losses with the GSE. If the reference pool incurs losses, the amount the Company will recover on the notes is reduced by its share of the amount of such losses, which could potentially be up to 100% of the amount outstanding. Unrealized losses recognized in AOCI for the CRT securities are primarily related to the difference between the current market rate for similar securities and the stated interest rate and are not considered to be related to credit loss events. The CRT securities are generally interest-only for an initial period of time and may be restricted from being transferred until a future date. Equity Securities Equity securities with readily determinable fair values are stated at fair value with realized and unrealized gains and losses reported in income. Equity securities without readily determinable fair values are recorded at cost less any impairment.
Loans	Loans Loans Held for Sale The Company transitioned its mortgage correspondent aggregation (“MCA”) program to a third party in 2021. Prior to transition, the Company committed to purchase residential mortgage loans from independent correspondent lenders and delivered those loans into the secondary market via whole loan sales to independent third parties or in securitization transactions to third parties such as Ginnie Mae or to GSEs. In some cases, the Company retained the mortgage servicing rights. Once purchased, these loans were classified as held for sale and carried at fair value pursuant to the election of the fair value option in accordance with Accounting Standards Codification (“ASC”) 825, Financial Instruments . At the commitment date, the Company entered into a corresponding forward sale commitment with a third party, typically Ginnie Mae or a GSE, to deliver the loans within a specified timeframe. The estimated gain/(loss) for the entire transaction (from initial purchase commitment to final delivery of loans) was recorded as an asset or liability. The fair value of loans held for sale is derived from observable current market prices, when available, and includes the fair value of the mortgage servicing rights. Adjustments to reflect unrealized gains and losses resulting from changes in fair value and realized gains and losses upon ultimate sale of the loans are classified as gain/(loss) on sale of loans held for sale on the consolidated statements of income and other comprehensive income. Residential mortgage loans held for sale 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. From time to time the Company holds for sale certain commercial loans and also the guaranteed portion of Small Business Administration 7(a) loans, which are carried at lower of cost or fair value. Loans Held for Investment Loans held for investment (including financing leases) are stated at the amount of unpaid principal reduced by unearned income, net of direct loan origination costs. Interest on loans is recognized using the simple interest method on the daily balances of the principal amounts outstanding. Loan origination fees, net of direct loan origination costs, and commitment fees are deferred and amortized as an adjustment to yield over the life of the loan, or over the commitment period, as applicable. A loan is considered past due when a contractually due payment has not been received by the contractual due date. The Company places a loan 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 as a reduction of current period interest income. Interest income is subsequently recognized on a cash basis as long as the remaining book balance of the asset is deemed to be collectible. If collectability is questionable, then cash payments are applied to principal. A loan is placed back on accrual status when both principal and interest are current and it is probable that all amounts due will be collected (both principal and interest) according to the terms of the loan agreement. Loans held for investment includes legal ownership interests in mortgage loans that the Company purchases through its mortgage finance division. The ownership interests are purchased from unaffiliated mortgage originators who are seeking additional liquidity to facilitate their ability to originate loans. The mortgage originator has no obligation to offer and the Company has no obligation to purchase these interests. The originator closes mortgage loans consistent with underwriting standards established by approved investors, and, at the time of the sale to the investor, the Company’s ownership interest and that of the originator are delivered to the investor selected by the originator and approved. The Company typically purchases up to a 99% ownership interest in each mortgage with the originator owning the remaining percentage. These mortgage ownership interests are generally held for a period of less than 30 days and more typically 10-20 days. Because of conditions in agreements with originators designed to reduce transaction risks, under ASC 860, Transfers and Servicing of Financial Assets (“ASC 860”), the ownership interests do not qualify as participating interests. Under ASC 860, the ownership interests are deemed to be loans to the originators and payments received from investors are deemed to be payments made by or on behalf of the originator to repay the loan. Because the Company has an actual, legal ownership interest in the underlying residential mortgage loan, these interests are reported as extensions of credit to the originators that are secured by the mortgage loans as collateral. Due to market conditions or events of default by the investor or the originator, the Company could be required to purchase the remaining interests in the mortgage loans and hold them beyond the expected 10-20 days. Mortgage loans acquired under these conditions would require mark-to-market adjustments to income and could require further allocations of the allowance for credit losses or be subject to charge-off in the event the loans become impaired.
Allowance for Credit Losses	Allowance for Credit Losses The Company’s allowance for credit losses is determined using a current expected credit loss (“CECL”) model. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. It also applies to off-balance sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with ASU 2016-02 "Leases (Topic 842)" . The following is a discussion of the allowance for credit losses on loans held for investment and off-balance sheet credit exposures. See “ Investment Securities - Debt Securities ” above for discussion of the allowance for credit losses on available-for-sale and held-to maturity debt securities. The CECL methodology recognizes lifetime expected credit losses immediately when a financial asset is originated or purchased. The allowance for credit losses on loans is a valuation account that is deducted from the amortized cost basis of loans to present the net amount expected to be collected on the loans. Loans, or portions thereof, are charged off against the allowance when they are deemed uncollectible. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. The allowance for credit losses on off-balance sheet financial instruments is recorded in other liabilities on the consolidated balance sheets. Management estimates the allowance balance using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Historical credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwriting standards, portfolio mix, credit quality, or term, as well as for changes in macroeconomic conditions, such as changes in unemployment rates, gross domestic product, property values, or other relevant factors. The allowance for credit losses is comprised of reserves measured on a collective (pool) basis when similar risk characteristics exist. Loans that do not share risk characteristics are assigned a reserve based on an individual evaluation and are not included in the collective (pool) evaluation. For purposes of determining the collective (pool) allowance for credit losses, the loan portfolio is segregated into pools first by portfolio segment and then by past due status or credit grade. Each pool is assigned a loss estimate, reflecting historical loss rates that incorporate probability of default and severity of losses over the estimated remaining life of the loans. These loss estimates are then modified to incorporate a reasonable and supportable forecast of future losses at the pool level, as well as any necessary qualitative adjustments using a Portfolio Level Qualitative Factor (“PLQF”) and/or a Portfolio Segment Level Qualitative Factor (“SLQF”). A similar process is employed to calculate a reserve assigned to off-balance financial instruments, specifically unfunded loan commitments and letters of credit. Modified loss estimates are assigned based on the balance of the commitments estimated to be outstanding at the time of default. The PLQF and SLQF are utilized to address factors that are not present in historical loss rates and are otherwise unaccounted for in the quantitative process. The PLQF is used to apply a qualitative adjustment across the entire portfolio of loans, while the SLQF is designed to apply a qualitative adjustment across a single portfolio segment. Even though portions of the allowance may be allocated to specific loans, the entire allowance is available for any credit that, in management’s judgment, should be charged off. The Company generally uses a two-year forecast period, based on a single forecast scenario or a blend of multiple forecast scenarios, using variables management believes are most relevant to each portfolio segment. For periods beyond which management is able to develop reasonable and supportable forecasts, the Company reverts to the average historical loss rate, reflecting historical default probabilities and loss severities, using a reversion speed that approximates 1 to 2 years. The forecast period and scenario(s) used are reviewed on a quarterly basis and may be adjusted based on management's view of the current economic conditions and level of predictability the forecast can provide. Portfolio segments are used to pool loans with similar risk characteristics and align with the Company’s methodology for measuring expected credit losses. A summary of the primary portfolio segments is as follows: Commercial. The commercial loan portfolio is comprised of lines of credit for working capital, term loans, reserve-based loans to energy exploration and production companies, and leases to finance equipment and other business assets across a variety of industries. These loans are used for general corporate purposes including financing working capital, internal growth, and acquisitions and are generally secured by accounts receivable, inventory, oil and gas reserves, equipment and other assets of clients’ businesses. Mortgage Finance. Mortgage finance loans relate to mortgage warehouse lending operations in which the Company purchases mortgage loan ownership interests from unaffiliated mortgage originators that are generally held for a period of less than 30 days and more typically 10-20 days before they are sold to an approved investor. Volumes fluctuate based on the level of market demand for the product and the number of days between purchase and sale of the loans, which can be affected by changes in overall market interest rates and housing demand and tend to peak at the end of each month. Mortgage finance loans are consistently underwritten based on standards established by the approved investors. Market conditions or events of default by an investor or originator could require that the Company repurchases the remaining interests in the mortgage loans and hold them beyond the expected 10-20 days. Commercial Real Estate (“CRE”). The CRE portfolio is comprised of construction/development financing and limited term financing provided to professional real estate developers, owners/managers of commercial real estate projects and properties, and residential builders/developers. Collateral properties include office buildings, warehouse/distribution buildings, shopping centers, hotels/motels, senior living, apartment buildings, residential and commercial tract developments, and raw land or lots to be developed into single-family homes. The primary source of repayment on these loans is expected to come from the sale, permanent financing or lease of the real property collateral. The performance of these loans is impacted by fluctuations in collateral values, the ability of the borrower to obtain permanent financing, and, in the case of loans to residential builder/developers, volatility in consumer demand. Consumer. This category of loans is comprised of loans made to consumers for personal expenditures, first and second lien mortgages made for the purpose of purchasing or constructing 1-4 family residential dwellings and home equity revolving lines of credit. The Company has several pass credit grades that are assigned to loans based on varying levels of risk, ranging from credits that are secured by cash or marketable securities, to watch credits which have all the characteristics of an acceptable credit risk but warrant more than the normal level of monitoring. Within the criticized/classified credit grades are special mention, substandard and doubtful. Special mention loans are those that are currently protected by the sound worth and paying capacity of the borrower, but that are potentially weak and constitute an additional credit risk. These loans have the potential to deteriorate to a substandard grade due to the existence of financial or administrative deficiencies. Substandard loans have a well-defined weakness or weaknesses that jeopardizes the liquidation of the debt. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Some substandard loans are inadequately protected by the sound worth and paying capacity of the borrower and of the collateral pledged and may be considered impaired. Substandard loans can be accruing or can be on non-accrual depending on the circumstances of the individual loans. Loans classified as doubtful have all the weaknesses inherent in substandard loans with the added characteristics that the weaknesses make collection in full highly questionable and improbable. The possibility of loss is extremely high. All doubtful loans are on non-accrual. The methodology used in the estimation of the allowance, which is performed at least quarterly, is designed to be dynamic and responsive to changes in portfolio credit quality and forecasted economic conditions. Changes are reflected in the pool-basis allowance and in reserves assigned on an individual basis as the collectability of classified loans is evaluated with new information. As the Company’s portfolio has matured, historical loss ratios have been closely monitored. The review of the appropriateness of the allowance is performed by executive management and presented to the audit and risk committees of the board of directors for their review. The committees report to the board as part of the board's quarterly review of the Company’s consolidated financial statements. When management determines that foreclosure is probable, and for certain collateral-dependent loans where foreclosure is not considered probable, expected credit losses are based on the estimated fair value of the collateral adjusted for selling costs, when appropriate. A loan is considered collateral-dependent when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless either of the following applies: management has a reasonable expectation that a loan will be restructured or the extension or renewal options are included in the borrower contract and are not unconditionally cancellable. The Company does not measure an allowance for credit losses on accrued interest receivable balances because these balances are written off in a timely manner as a reduction to interest income when loans are placed on non-accrual status as discussed above.
Other Real Estate Owned	Other Real Estate Owned Other real estate owned (“OREO”), which is included in other assets on the consolidated balance sheet, consists of real estate that has been foreclosed. When foreclosure occurs, the acquired asset is recorded at fair value less selling costs, generally based on appraised value, which may result in partial charge-off of the loan through a charge to the allowance for credit losses, if necessary. Subsequent write-downs required for declines in value are recorded through a valuation allowance, or taken directly to the asset, and are recorded in other non-interest expense on the consolidated statements of income and other comprehensive income. Gains or losses on sale of OREO are recorded in other non-interest income on the consolidated statements of income and other comprehensive income.
Goodwill and Other Intangible Assets, Net	Goodwill and Other Intangible Assets, Net Intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or because the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset or liability. The Company had $1.5 million of goodwill at both December 31, 2023 and December 31, 2022. Intangible assets with definite useful lives are amortized over their estimated life. No amortization expense related to intangible assets was recorded during the year ended December 31, 2023, as compared to $338,000 and $405,000 during the years ended December 31, 2022 and 2021, respectively. Goodwill and intangible assets are tested for impairment at least annually or whenever changes in circumstances indicate the carrying amount of the assets may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value. In 2023 and 2022, the annual test of goodwill impairment was performed, and in both periods, no impairment was indicated.
Premises and Equipment, Net	Premises and Equipment, Net Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. Furniture and equipment are generally depreciated over three
Software	Software Costs incurred in connection with development or purchase of internal use software and cloud computing arrangements, including in-substance software licenses, are capitalized. Amortization is computed on a straight-line basis over the estimated useful life of the asset, which generally ranges from one
Financial Instruments with Off-Balance Sheet Risk	Financial Instruments with Off-Balance Sheet Risk The Company has undertaken certain guarantee obligations in the ordinary course of business which include liabilities with off-balance sheet risk. The Company 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 on the consolidated balance sheets. The Company’s exposure to credit loss in the event of non-performance by the other party to these financial instruments is represented by the contractual amount of the instruments. The Company 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 Company evaluates each customer’s creditworthiness on a case-by-case basis. Commitments to extend credit generally do not include mortgage finance arrangements with mortgage loan originators through the mortgage warehouse lending division, which are established as uncommitted “guidance” purchase and sale facilities under which the mortgage originator has no obligation to offer and the Company has no obligation to purchase interests in the mortgage loans subject to the arrangements. Standby letters of credit are conditional commitments issued by the Company 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. In conjunction with the sale and securitization of loans held for sale and their related servicing rights, the Company may be exposed to liability resulting from recourse, repurchase and make-whole agreements. If it is determined subsequent to the sale of a loan or its related servicing rights that a breach of the representations or warranties made in the applicable sale agreement has occurred, which may include guarantees that prepayments will not occur within a specified and customary time frame, the Company 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 and its related servicing rights. The 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. The Company establishes reserves for estimated losses of this nature inherent in the sale 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.
Leases	Leases Right of use (“ROU”) assets represent the Company’s right to use an underlying asset during the lease term and lease liabilities represent its obligation to make lease payments arising from the lease. Lease agreements may contain extension options which typically provide for an extension of a lease term at the then fair market rental rates. As these extension options are not generally considered reasonably certain of exercise, they are not included in the lease term. Operating leases relate primarily to real estate used for corporate offices and bank branches and finance leases relate primarily to equipment. The Company does not separate lease and non-lease components for real estate leases. For those leases with a term greater than one year, ROU assets and lease liabilities are recognized at lease commencement based on the present value of the remaining lease payments using a discount rate that represents the incremental borrowing rate on the effective date of the lease, which is based on the Company’s collateralized borrowing capabilities over a similar term as the related lease payments. ROU assets are further adjusted for lease incentives. Operating leases in which the Company is the lessee are recorded as operating lease ROU assets and operating lease liabilities, and are included in other assets and other liabilities, respectively, on the consolidated balance sheets. Operating lease expense, which is comprised of amortization of the ROU asset and the implicit interest accreted on the operating lease liability, is recognized on a straight-line basis over the lease term and recorded in net occupancy expense on the consolidated statements of income and other comprehensive income. Finance leases in which the Company is the lessee are recorded as finance lease ROU assets and finance lease liabilities and are included in premises and equipment, net, and other liabilities, respectively, on the consolidated balance sheets. Finance lease expense is comprised of amortization of the ROU asset, which is recognized on a straight-line basis over the lease term and recorded in net occupancy expense on the consolidated statements of income and other comprehensive income, and the implicit interest accreted on the operating lease liability, which is recognized using the effective interest method over the lease term and recorded in interest expense on the consolidated statements of income and other comprehensive income. Variable costs, such as maintenance expenses, parking and property and sales taxes, are expensed as they are incurred, and are recorded in net occupancy expense on the consolidated statements of income and other comprehensive income.
Revenue Recognition	Revenue Recognition ASC 606, Revenue from Contracts with Customers (“ASC 606”), establishes principles for reporting information about the nature, amount, timing and uncertainty of revenue and cash flows arising from the entity's contracts to provide goods or services to customers. The core principle requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration that it expects to be entitled to receive in exchange for those goods or services recognized as performance obligations are satisfied. The majority of the Company’s revenue-generating transactions are not subject to ASC 606, including revenue generated from financial instruments, such as loans, letters of credit, derivatives and investment securities, as these activities are subject to other GAAP discussed elsewhere within the Company’s disclosures. Descriptions of revenue-generating activities that are within the scope of ASC 606, which are presented in the income statements as components of non-interest income are as follows: • Service charges on deposit accounts - these represent general service fees for monthly account maintenance and activity- or transaction-based fees and consist of transaction-based revenue, time-based revenue (service period), item-based revenue or some other individual attribute-based revenue. Revenue is recognized when the performance obligation is completed, which is generally monthly for account maintenance services or when a transaction has been completed (such as a stop payment). Payments for these activities are generally received at the time the performance obligations are satisfied. • Wealth management and trust fee income - this represents monthly fees due from wealth management customers as consideration for managing the customers' assets. Wealth management and trust services include custody of assets, investment management, escrow services, fees for trust services and similar fiduciary activities. These fees are typically paid on a quarterly basis and recognized ratably throughout the quarter as the performance obligation is satisfied each month. • Brokered loan fees - these represent fees for the administration and funding of purchased mortgage loan interests as well as facility renewal and application fees received from mortgage originator customers in the mortgage warehouse lending business. Also included are fees received from independent correspondent mortgage lenders as consideration for the purchase of individual residential mortgage loans through the Company’s MCA business. Revenue related to the mortgage warehouse lending business is recognized when the related loan interest is disposed (i.e., through sale or payoff) or upon receipt of the facility renewal or application. Revenue related to the MCA business is recognized at the time a loan is purchased. • Investment banking and trading income - includes the following: Year Ended December 31, 2023 2022 2021 Investment banking and advisory fees $ 61,366 $ 24,974 $ 22,007 Trading income 24,816 10,080 2,434 Total $ 86,182 $ 35,054 $ 24,441 • Investment banking and advisory fees includes fees for merger, acquisition, divestiture and restructuring advisory services, fees for securities underwriting activities and loan and security syndication fees. Advisory fees are generally earned as performance obligations of the advisory service are satisfied. Underwriting fees are generally recognized upon execution of the client’s issuance of debt or equity instruments. Loan syndication fees are generally recognized upon closing of a loan syndication transaction. • Trading income includes fees for derivative transactions which are generally recognized when the derivative transaction occurs. Also included in trading income are realized and unrealized gains and losses recognized on the Company’s trading assets and liabilities. Realized gains and losses are generally recognized when a sale occurs and unrealized gains and losses are generally recognized monthly as the trading assets and liabilities are marked to fair value. • Other non-interest income includes items such as letter of credit fees, bank owned life insurance income, dividends on FHLB and FRB stock and other general operating income, none of which are subject to the requirements of ASC 606. Also included in other-non-interest income are interchange fees earned when commercial credit card clients process transactions through card networks. The Company’s performance obligations are generally complete when the transactions generating the fees are processed.
Stock-based Compensation	Stock-based Compensation The Company accounts for all stock-based compensation transactions in accordance with ASC 718, Compensation — Stock Compensation (“ASC 718”), which requires that stock compensation transactions be recognized as compensation expense on the consolidated statements of income and other comprehensive income based on their fair values on the measurement date, which is generally the date of the grant.
Income Taxes	Income Taxes The Company and its subsidiary file a consolidated federal income tax return. The Company utilizes the liability method in accounting for income taxes. Under this method, deferred tax assets and liabilities are determined based upon the difference between the values of the assets and liabilities as reflected in the financial statements and their related tax basis using enacted tax rates in effect for the year in which the differences are expected to be recovered or settled. As changes in tax law or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes. A valuation allowance is provided against deferred tax assets unless it is more likely than not that such deferred tax assets will be realized. Deferred tax assets, net, are included in other assets on the consolidated balance sheets. The tax effect of unrealized gains and losses on available-for-sale debt securities and derivative instruments designated as hedges is recorded to other comprehensive income and is not a component of income tax expense/(benefit). GAAP does not permit the adjustment of tax amounts in AOCI for changes in tax rates; as a result the effects become “stranded” in AOCI. Stranded tax effects caused by the revaluation of deferred taxes are reclassified from AOCI to retained earnings in accordance with ASU 2018-02 “ Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” Unrecognized tax benefits for the uncertain portion of recorded tax benefits and related interest may result from the application of complex tax laws, rules, regulations and interpretations. Unrecognized tax benefits, as well as estimated penalties and interest, are assessed quarterly and may be adjusted through current income tax expense in future periods based on changing facts and circumstances, completion of examinations by taxing authorities or expiration of a statute of limitations.
Fair Values of Financial Instruments	Fair Values of Financial Instruments ASC 820, Fair Value Measurements and Disclosures (“ASC 820”), defines fair value, establishes a framework for measuring fair value under GAAP and enhances disclosures about fair value measurements. The standard describes three levels of inputs that may be used to measure fair value as provided below. Level 1 Quoted prices in active markets for identical assets or liabilities. Level 2 Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 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. Also required are disclosures 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. The disclosure of fair value information about financial instruments does not and is not intended to represent the fair value of the Company. The following are descriptions of the methods and significant assumptions used by the Company in estimating its fair value disclosures for financial instruments: Cash and Cash Equivalents, Variable Rate Loans, Variable Rate Short-term Borrowings and Variable Rate Long-term Debt The fair value of these financial instruments approximates carrying value. Investment Securities The fair value of the Company’s U.S. Treasury, U.S. government agency and residential mortgage-backed securities are based on prices obtained from independent pricing services. The Company’s U.S. Treasury securities are valued based on quoted market prices for identical securities in an active market and are classified as Level 1 assets in the fair value hierarchy, while the Company’s U.S. government agency and residential mortgage-backed securities are valued based on quoted market prices for the same or similar securities and are characterized as Level 2 assets in the fair value hierarchy. Management obtains documentation from the primary independent pricing service regarding the processes and controls applicable to pricing investment securities, and on a quarterly basis independently verify the prices that were received from the service provider using two additional independent pricing sources. CRT securities are valued using a discounted cash flow model, which utilizes Level 3 inputs, and are classified as Level 3 assets in the fair value hierarchy. Within the investment securities portfolio, the Company holds equity securities that consist of investments that qualify for consideration under the regulations implementing the Community Reinvestment Act and investments in exchange traded funds. Some of these equity securities are valued using quoted market prices for identical equity securities in an active market and are classified as Level 1 assets in the fair value hierarchy and others are traded in less active markets and are classified as Level 2 assets in the fair value hierarchy. Loans Held for Sale The fair value for loans held for sale is derived from quoted market prices for similar loans, in which case they are characterized as Level 2 assets in the fair value hierarchy, or is derived from third party pricing models, in which case they are characterized as Level 3 assets in the fair value hierarchy. Securities Sold Not Yet Purchased The fair value for securities sold but not yet purchased is derived from quoted prices in active markets and are classified as Level 1 liabilities in the fair value hierarchy. Derivative Assets and Liabilities The estimated fair value of derivative assets and liabilities is obtained from independent pricing services based on quoted market prices for similar derivative contracts and these financial instruments are characterized as Level 2 assets and liabilities in the fair value hierarchy. On a quarterly basis, management independently verifies the fair value using an additional independent pricing source.
Derivative Financial Instruments	Derivative Financial Instruments All contracts that satisfy the definition of a derivative are recorded at fair value in other assets and other liabilities on the consolidated balance sheets, and the related cash flows are recorded in the operating activities section of the consolidated statement of cash flows. The Company records the derivatives on a net basis when a right of offset exists with a single counterparty that is subject to a legally enforceable master netting agreement. Non-Hedging Derivatives The Company enters into interest rate derivative instruments with customers while at the same time entering into offsetting interest rate derivative instruments with another financial institution. These transactions allow the customer to effectively manage their exposure to a variable rate loan. Because the Company acts as an intermediary for its customers, changes in the fair value of the underlying derivative instruments substantially offset each other and do not have a material impact on the Company’s results of operations. The Company offers forward contract derivative instruments, such as to-be-announced U.S. agency residential mortgage-back securities, to its mortgage banking customers to allow the customers to mitigate exposure to market risks associated with the purchase or origination of mortgage loans. To mitigate the Company’s exposure to these forward contracts, the Company will enter into offsetting forward contracts, most typically with a financial institution. Any changes in fair value to the forward contract derivative instruments are recorded in investment banking and trading income on the consolidated statements of income and other comprehensive income. The Company also offers foreign currency derivative instruments in which the Company enters into a contract with a customer to buy or sell a foreign currency at a future date for a specified price while at the same time entering into an offsetting contract with a financial institution to buy or sell the same currency at the same future date for a specified price. The transaction allows the customer to manage their exposure to foreign currency exchange rate fluctuations. Because the Company acts as an intermediary for its customers, changes in the fair value of the underlying derivative instruments substantially offset each other and do not have a material impact on the Company’s results of operations. Derivatives Designated as Hedges The Company enters into interest rate derivative contracts that are designated as qualifying cash flow hedges to hedge the exposure to variability in expected future cash flows attributable to changes in a contractually specified interest rate. To qualify for hedge accounting, a formal assessment is prepared to determine whether the hedging relationship, both at inception and on an ongoing basis, is expected to be highly effective in achieving offsetting cash flows attributable to the hedged risk during the
Segment Reporting	Segment Reporting The Company has determined that all of its banking divisions and subsidiaries meet the aggregation criteria of ASC 280, Segment Reporting , as its current operating model is structured whereby banking divisions and subsidiaries serve a similar base of primarily commercial clients utilizing a company-wide offering of similar products and services managed through similar processes and platforms that are collectively reviewed by the chief operating decision maker.
New Accounting Standards	ASU 2023-06 “Disclosure Improvements” (“ASU 2023-06”) amends the disclosure or presentation requirements related to various subtopics in the FASB Accounting Standards Codification (the “Codification”). ASU 2023-06 was issued in response to the SEC’s initiative to update and simplify disclosure requirements. The SEC identified 27 disclosure requirements that were incremental to those in the Codification and referred them to the FASB for potential incorporation into U.S. GAAP. To avoid duplication, the SEC intended to eliminate those disclosure requirements from existing SEC regulations as the FASB incorporated them into the relevant Codification subtopics. ASU 2023-06 adds 14 of the 27 identified disclosure or presentation requirements to the Codification. ASU 2023-06 is to be applied prospectively, and early adoption is prohibited. For reporting entities subject to the SEC’s existing disclosure requirements, the effective dates of ASU 2023-06 will be the date on which the SEC’s removal of that related disclosure requirement from Regulation S-X or Regulation S-K becomes effective. If by June 30, 2027, the SEC has not removed the applicable requirement from Regulation S-X or Regulation S-K, the pending content of the related amendment will be removed from the Codification and will not become effective for any entities. ASU 2023-06 is not expected to have a significant impact on our financial statements. ASU 2023-07 “Segment Reporting (Topic 280) - Improvement to Reportable Segment Disclosures” (“ASU 2023-07”) amends the disclosure requirements related to segment reporting primarily through enhanced disclosure about significant segment expenses and by requiring disclosure of segment information on an annual and interim basis. ASU 2023-07 is effective January 1, 2024 and is not expected to have a significant impact on our financial statements. ASU 2023-09 “Income Taxes (Topic 740) - Improvements to Income Tax Disclosures” (“ASU 2023-09”) enhances the transparency and decision usefulness of income tax disclosures. ASU 2023-09 will require disaggregated information about a reporting entity’s effective tax rate reconciliation as well as information on income taxes paid. Entities will also be required to disclose income/(loss) from continuing operations before income tax expense/(benefit) disaggregated between domestic and foreign, as well as income tax expense/(benefit) from continuing operations disaggregated by federal, state and foreign. ASU 2023-09 is effective January 1, 2025 and is not expected to have a significant impact on our financial statements.

Organization, Consolidation and

Organization, Consolidation and Presentation of Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Investment Banking and Trading Income	Investment banking and trading income - includes the following: Year Ended December 31, 2023 2022 2021 Investment banking and advisory fees $ 61,366 $ 24,974 $ 22,007 Trading income 24,816 10,080 2,434 Total $ 86,182 $ 35,054 $ 24,441

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2023
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: Year ended December 31, (in thousands except share and per share data) 2023 2022 2021 Numerator: Net income $ 189,141 $ 332,478 $ 253,939 Preferred stock dividends 17,250 17,250 18,721 Net income available to common stockholders $ 171,891 $ 315,228 $ 235,218 Denominator: Basic earnings per common share—weighted average common shares 48,054,935 50,457,746 50,580,660 Effect of dilutive outstanding stock-settled awards 555,271 588,996 560,314 Dilutive earnings per common share—weighted average diluted common shares 48,610,206 51,046,742 51,140,974 Basic earnings per common share $ 3.58 $ 6.25 $ 4.65 Diluted earnings per common share $ 3.54 $ 6.18 $ 4.60 Anti-dilutive outstanding stock-settled awards 97,368 311,226 93,945

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Summary of Available-for-Sale Debt Securities	The following is a summary of the Company’s investment securities: (in thousands) Amortized Gross Gross Estimated December 31, 2023 Available-for-sale debt securities: U.S. Treasury securities $ 651,112 $ — $ (14,639) $ 636,473 U.S. government agency securities 125,000 — (18,408) 106,592 Residential mortgage-backed securities 2,782,734 540 (312,442) 2,470,832 CRT securities 13,636 — (1,641) 11,995 Total available-for-sale debt securities 3,572,482 540 (347,130) 3,225,892 Held-to-maturity debt securities: Residential mortgage-backed securities 865,477 — (101,633) 763,844 Total held-to-maturity debt securities 865,477 — (101,633) 763,844 Equity securities 51,825 Total investment securities(2) $ 4,143,194 December 31, 2022 Available-for-sale debt securities: U.S. Treasury securities $ 698,769 $ — $ (28,187) $ 670,582 U.S. government agency securities 125,000 — (22,846) 102,154 Residential mortgage-backed securities 2,162,364 3 (331,320) 1,831,047 CRT securities 14,713 — (2,852) 11,861 Total available-for-sale debt securities 3,000,846 3 (385,205) 2,615,644 Held-to-maturity securities: Residential mortgage-backed securities 935,514 — (118,600) 816,914 Total held-to-maturity securities 935,514 — (118,600) 816,914 Equity securities 33,956 Total investment securities(2) $ 3,585,114 (1) Excludes accrued interest receivable of $9.5 million and $6.6 million at December 31, 2023 and December 31, 2022, respectively, related to available-for-sale debt securities and $1.4 million and $1.5 million at December 31, 2023 and December 31, 2022, respectively, related to held-to-maturity debt securities that is recorded in accrued interest receivable and other assets on the consolidated balance sheets. (2) Includes available-for-sale debt securities and equity securities at estimated fair value and held-to-maturity debt securities at amortized cost.
Summary of Amortized Cost, Estimated Fair Value, and Weighted Average Yields for Available-for-Sale Debt Securities	The amortized cost and estimated fair value as of December 31, 2023, excluding accrued interest receivable, of available-for-sale and held-to-maturity debt securities are presented below by contractual maturity. Actual maturities may differ from contractual maturities of mortgage-backed securities because borrowers may have the right to call or prepay obligations with or without prepayment penalties. Available-for-sale Held-to-maturity (in thousands) Amortized Cost Fair Value Amortized Cost Fair Value Due within one year $ 251,438 $ 250,610 $ — $ — Due after one year through five years 449,674 430,022 — — Due after five years through ten years 105,690 89,141 — — Due after ten years 2,765,680 2,456,119 865,477 763,844 Total $ 3,572,482 $ 3,225,892 $ 865,477 $ 763,844 The table below presents the weighted average yields for the Company’s available-for-sale debt securities for the year ended December 31, 2023. Weighted average yields are calculated based on amortized cost on a tax-exempt basis assuming a 21% tax rate, where applicable. U.S. Treasury securities U.S. government agency securities Residential mortgage-backed securities CRT securities Due within one year 1.16 % — % — % — % Due after one year through five years 2.70 1.00 — — Due after five years through ten years — 1.21 1.20 5.51 Due after ten years — — 2.79 — Total 2.11 % 1.13 % 2.78 % 5.51 %
Schedule of Available-for-Sale Debt Securities in a Continuous Unrealized Loss Position	The following table discloses the Company’s available-for-sale debt 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: Less Than 12 Months 12 Months or Longer Total (in thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss December 31, 2023 U.S. Treasury securities $ — $ — $ 636,473 $ (14,639) $ 636,473 $ (14,639) U.S. government agency securities — — 106,592 (18,408) 106,592 (18,408) Residential mortgage-backed securities 910,999 (19,751) 1,501,340 (292,691) 2,412,339 (312,442) CRT securities — — 11,995 (1,641) 11,995 (1,641) Total $ 910,999 $ (19,751) $ 2,256,400 $ (327,379) $ 3,167,399 $ (347,130) December 31, 2022 U.S. Treasury securities $ 670,582 $ (28,187) $ — $ — $ 670,582 $ (28,187) U.S. government agency securities — — 102,154 (22,846) 102,154 (22,846) Residential mortgage-backed securities 261,502 (9,481) 1,569,107 (321,839) 1,830,609 (331,320) CRT securities — — 11,861 (2,852) 11,861 (2,852) Total $ 932,084 $ (37,668) $ 1,683,122 $ (347,537) $ 2,615,206 $ (385,205)
Summary of Unrealized and Realized Gains/(Losses) Recognized in Net Income on Equity Securities	The following is a summary of unrealized and realized gains/(losses) recognized on equity securities included in other non-interest income on the consolidated statements of income and other comprehensive income: Year Ended December 31, (in thousands) 2023 2022 Net gains/(losses) recognized during the period $ 3,571 $ (7,876) Less: Realized net gains/(losses) recognized on securities sold (393) 714 Unrealized net gains/(losses) recognized on securities still held $ 3,964 $ (8,590)

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses on Loans (Tables)	12 Months Ended
	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Schedule of loans held for investments	Loans are summarized by portfolio segment as follows: (in thousands) December 31, 2023 December 31, 2022 Loans held for investment(1): Commercial $ 10,410,766 $ 9,832,676 Mortgage finance 3,978,328 4,090,033 Commercial real estate 5,500,774 4,875,363 Consumer 530,948 552,848 Gross loans held for investment 20,420,816 19,350,920 Unearned income (net of direct origination costs) (80,258) (63,580) Total loans held for investment 20,340,558 19,287,340 Allowance for credit losses on loans (249,973) (253,469) Total loans held for investment, net $ 20,090,585 $ 19,033,871 Loans held for sale: Mortgage loans, at fair value $ 706 $ — Non-mortgage loans, at lower of cost or fair value 43,399 36,357 Total loans held for sale $ 44,105 $ 36,357 (1) Excludes accrued interest receivable of $118.1 million and $100.4 million at December 31, 2023 and December 31, 2022, respectively, that is recorded in accrued interest receivable and other assets on the consolidated balance sheets.
Schedule of the credit risk profile of loan portfolio by internally assigned grades and nonaccrual status	The following tables summarize gross loans held for investment by year of origination and internally assigned credit grades: (in thousands) 2023 2022 2021 2020 2019 2018 Revolving lines of credit Revolving lines of credit converted to term loans Total December 31, 2023 Commercial (1-7) Pass $ 1,546,257 $ 1,408,672 $ 279,266 $ 144,699 $ 142,301 $ 157,808 $ 6,284,464 $ 16,580 $ 9,980,047 (8) Special mention 22,148 118,991 35,619 285 823 13,385 40,647 89 231,987 (9) Substandard - accruing 12,477 50,876 9,334 18,547 — 78 38,372 — 129,684 (9+) Non-accrual 9,395 34,229 340 2,085 15,080 7,840 79 — 69,048 Total commercial $ 1,590,277 $ 1,612,768 $ 324,559 $ 165,616 $ 158,204 $ 179,111 $ 6,363,562 $ 16,669 $ 10,410,766 Mortgage finance (1-7) Pass $ — $ — $ — $ — $ — $ — $ 3,978,328 $ — $ 3,978,328 (8) Special mention — — — — — — — — — (9) Substandard - accruing — — — — — — — — — (9+) Non-accrual — — — — — — — — — Total mortgage finance $ — $ — $ — $ — $ — $ — $ 3,978,328 $ — $ 3,978,328 Commercial real estate (1-7) Pass $ 561,801 $ 1,689,325 $ 1,042,953 $ 419,703 $ 317,480 $ 559,026 $ 575,928 $ 28,175 $ 5,194,391 (8) Special mention — 136,801 32,937 24,440 34,181 22,833 7,895 — 259,087 (9) Substandard - accruing — 2,232 — — — 28,573 4,141 — 34,946 (9+) Non-accrual — — 12,350 — — — — — 12,350 Total commercial real estate $ 561,801 $ 1,828,358 $ 1,088,240 $ 444,143 $ 351,661 $ 610,432 $ 587,964 $ 28,175 $ 5,500,774 Consumer (1-7) Pass $ 31,876 $ 56,425 $ 78,096 $ 47,423 $ 14,141 $ 102,691 $ 199,171 $ — $ 529,823 (8) Special mention — — — — — — 100 41 141 (9) Substandard - accruing — — — — — 984 — — 984 (9+) Non-accrual — — — — — — — — — Total consumer $ 31,876 $ 56,425 $ 78,096 $ 47,423 $ 14,141 $ 103,675 $ 199,271 $ 41 $ 530,948 Total $ 2,183,954 $ 3,497,551 $ 1,490,895 $ 657,182 $ 524,006 $ 893,218 $ 11,129,125 $ 44,885 $ 20,420,816 Gross charge-offs $ 8,364 $ 5,090 $ 25,578 $ — $ 15,243 $ 883 $ 698 $ 871 $ 56,727 (in thousands) 2022 2021 2020 2019 2018 2017 Revolving lines of credit Revolving lines of credit converted to term loans Total December 31, 2022 Commercial (1-7) Pass $ 2,022,950 $ 678,473 $ 240,511 $ 254,985 $ 322,099 $ 227,853 $ 5,694,352 $ 20,933 $ 9,462,156 (8) Special mention 9,141 7,740 3,628 37,794 11,998 4,975 95,310 2,250 172,836 (9) Substandard - accruing 18,670 71,147 514 1,666 14,933 6,305 37,407 — 150,642 (9+) Non-accrual 376 512 751 30,392 6,226 2,520 6,265 — 47,042 Total commercial $ 2,051,137 $ 757,872 $ 245,404 $ 324,837 $ 355,256 $ 241,653 $ 5,833,334 $ 23,183 $ 9,832,676 Mortgage finance (1-7) Pass $ — $ — $ — $ — $ — $ — $ 4,090,033 $ — $ 4,090,033 (8) Special mention — — — — — — — — — (9) Substandard - accruing — — — — — — — — — (9+) Non-accrual — — — — — — — — — Total mortgage finance $ — $ — $ — $ — $ — $ — $ 4,090,033 $ — $ 4,090,033 Commercial real estate (1-7) Pass $ 1,362,160 $ 958,669 $ 670,113 $ 520,970 $ 263,240 $ 448,536 $ 465,834 $ 43,237 $ 4,732,759 (8) Special mention 3,494 6,524 46,512 5,295 19,350 4,038 — — 85,213 (9) Substandard - accruing 7,840 17,850 — 247 11,458 18,733 — — 56,128 (9+) Non-accrual — — 1,081 — — 182 — — 1,263 Total commercial real estate $ 1,373,494 $ 983,043 $ 717,706 $ 526,512 $ 294,048 $ 471,489 $ 465,834 $ 43,237 $ 4,875,363 Consumer (1-7) Pass $ 69,320 $ 95,470 $ 57,060 $ 24,773 $ 20,055 $ 89,919 $ 196,088 $ 130 $ 552,815 (8) Special mention — — — — — — — — — (9) Substandard - accruing — — — — — — — — — (9+) Non-accrual — — — 33 — — — — 33 Total Consumer $ 69,320 $ 95,470 $ 57,060 $ 24,806 $ 20,055 $ 89,919 $ 196,088 $ 130 $ 552,848 Total $ 3,493,951 $ 1,836,385 $ 1,020,170 $ 876,155 $ 669,359 $ 803,061 $ 10,585,289 $ 66,550 $ 19,350,920
Schedule of activity in the reserve for loan losses by portfolio segment	The following table details activity in the allowance for credit losses on loans. The changes made to the Company’s current expected credit loss model, as discussed above and in Note 1 - Operations and Summary of Significant Accounting Policies, resulted in a reallocation of the allowance for credit losses between loan portfolio segments and allowance balances allocated to off-balance sheet financial instruments, the results of which are included in the table below. The changes made result in a higher allocation of losses to off-balance sheet financial instruments. See Note 9 - Financial Instruments with Off-Balance Sheet Risk for information regarding the allowance for credit losses on off-balance sheet financial instruments. Allocation of a portion of the allowance to one category does not preclude its availability to absorb losses in other categories. (in thousands) Commercial Mortgage Commercial Real Estate Consumer Total Year Ended December 31, 2023 Beginning balance $ 185,303 $ 10,745 $ 54,268 $ 3,153 $ 253,469 Provision for credit losses on loans 31,529 (6,572) 23,057 (583) 47,431 Charge-offs 51,186 — 5,500 41 56,727 Recoveries 5,791 — 4 5 5,800 Net charge-offs (recoveries) 45,395 — 5,496 36 50,927 Ending balance $ 171,437 $ 4,173 $ 71,829 $ 2,534 $ 249,973 Year Ended December 31, 2022 Beginning balance $ 154,360 $ 6,083 $ 48,247 $ 3,176 $ 211,866 Provision for credit losses on loans 50,485 4,662 6,371 (46) 61,472 Charge-offs 23,219 — 350 — 23,569 Recoveries 3,677 — — 23 3,700 Net charge-offs (recoveries) 19,542 — 350 (23) 19,869 Ending balance $ 185,303 $ 10,745 $ 54,268 $ 3,153 $ 253,469
Schedule of an age analysis of accruing past due loans	The table below provides an age analysis of gross loans held for investment: (in thousands) 30-59 Days 60-89 Days 90 Days or More Past Due Total Past Non-accrual(1) Current Total Non-accrual With No Allowance December 31, 2023 Commercial $ 2,642 $ 9,584 $ 18,540 $ 30,766 $ 69,048 $ 10,310,952 $ 10,410,766 $ 7,773 Mortgage finance — — — — — 3,978,328 3,978,328 — Commercial real estate 679 4,140 — 4,819 12,350 5,483,605 5,500,774 — Consumer 1,290 — 983 2,273 — 528,675 530,948 — Total $ 4,611 $ 13,724 $ 19,523 $ 37,858 $ 81,398 $ 20,301,560 $ 20,420,816 $ 7,773 (1) As of December 31, 2023, $358,000 of non-accrual loans were earning interest income on a cash basis compared to $2.2 million as of December 31, 2022. Additionally, $37,000 and $801,000 of interest income was recognized on non-accrual loans for the years ended December 31, 2023 and 2022, respectively. Accrued interest of $3.0 million and $1.6 million was reversed during the years ended December 31, 2023 and December 31, 2022, respectively.
Summary of loan modifications	The table below details gross loans held for investment as of December 31, 2023 made to borrowers experiencing financial difficulty that were modified during the year ended December 31, 2023: (in thousands) Payment Term Payment Interest Rate Total Percentage of Commercial $ 30,873 $ 733 $ 5,458 $ 6,064 $ 43,128 0.21 % Commercial real estate — 21,364 — — 21,364 0.10 % Total $ 30,873 $ 22,097 $ 5,458 $ 6,064 $ 64,492 0.32 % The following table summarizes the financial impacts of loan modifications made to borrowers experiencing financial difficulty during the year ended December 31, 2023: Interest Rate Term Extension Total Payment Commercial 0.70% 4 to 36 $ 5,139 Commercial real estate —% 4 to 6 $ — The table below provides an age analysis of gross loans held for investment as of December 31, 2023 made to borrowers experiencing financial difficulty that were modified on or after January 1, 2023, the date the Company adopted ASU 2022-02: (in thousands) 30-89 Days 90+ Days Non-Accrual Current Total December 31, 2023 Commercial $ 7,617 $ — $ 11,601 $ 23,910 $ 43,128 Commercial real estate 4,141 — — 17,223 21,364 Total $ 11,758 $ — $ 11,601 $ 41,133 $ 64,492 The following table details the recorded investments of loans restructured during the year ended December 31, 2022. Extended Maturity Adjusted Payment Schedule Total (in thousands, except number of contracts) Number of Contracts Balance at Period End Number of Contracts Balance at Period End Number of Contracts Balance at Period End Year Ended December 31, 2022 Commercial — $ — 1 $ 531 1 $ 531 Total — $ — 1 $ 531 1 $ 531

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2023
Leases [Abstract]
Right-Of-Use Assets and Lease Liabilities	The following table presents ROU assets and lease liabilities: Year Ended December 31, (in thousands) 2023 2022 ROU assets: Finance leases $ 1,529 $ 2,865 Operating leases 87,810 79,889 Total $ 89,339 $ 82,754 Lease liabilities Finance leases $ 1,550 $ 2,877 Operating leases 109,523 103,814 Total $ 111,073 $ 106,691
Summary of lease cost and other information, operating leases	The table below summarizes the Company’s net lease cost: Year Ended December 31, (in thousands) 2023 2022 Finance lease cost: Amortization of ROU assets $ 1,335 $ 1,108 Interest on lease liabilities 40 34 Operating lease cost 14,854 23,463 Short-term lease cost 37 19 Variable lease cost 7,168 5,122 Sublease income — (18) Net lease cost $ 23,434 $ 29,728 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases $ 40 $ 34 Operating cash flows from operating leases 17,203 21,910 Financing cash flows from finance leases 1,327 1,096 ROU assets obtained in exchange for new finance leases — 3,714 ROU assets obtained in exchange for new operating leases 18,741 57,544
Assets and Liabilities, Lessee	The table below summarizes other information related to operating and finance leases: Year Ended December 31, 2023 2022 Weighted-average remaining lease term - finance leases, in years 1.2 2.2 Weighted-average remaining lease term - operating leases, in years 12.2 11.5 Weighted-average discount rate - finance leases 1.85 % 1.74 % Weighted-average discount rate - operating leases 4.43 % 4.16 %
Summary of maturity of remaining lease liabilities	The table below summarizes the maturity of remaining lease liabilities as of December 31, 2023: (in thousands) Finance Leases Operating Leases Total 2024 $ 1,334 $ 13,622 $ 14,956 2025 237 11,027 11,264 2026 — 11,591 11,591 2027 — 11,543 11,543 2028 — 10,708 10,708 2028 and thereafter — 90,784 90,784 Total lease payments 1,571 149,275 150,846 Less: Interest (21) (39,752) (39,773) Present value of lease liabilities $ 1,550 $ 109,523 $ 111,073

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Summary of premises and equipment	Premises and equipment are summarized as follows: December 31, (in thousands) 2023 2022 Premises $ 39,547 $ 34,930 Furniture and equipment 63,367 54,581 Total cost 102,914 89,511 Accumulated depreciation (70,548) (63,129) Total premises and equipment, net $ 32,366 $ 26,382

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2023
Deposits [Abstract]
Schedule of deposits	Deposits are summarized as follows: December 31, (in thousands) 2023 2022 Non-interest bearing deposits $ 7,328,276 $ 9,618,081 Interest bearing deposits: Transaction 2,264,055 683,562 Savings 11,000,783 11,042,658 Time 1,778,725 1,512,579 Total interest bearing deposits 15,043,563 13,238,799 Total deposits $ 22,371,839 $ 22,856,880
Schedule of maturities of interest-bearing time deposits	The scheduled maturities of interest bearing time deposits were as follows at December 31, 2023: (in thousands) 2024 $ 1,752,837 2025 24,102 2026 1,075 2027 664 2028 47 2028 and after — Total $ 1,778,725

Short-Term Borrowings and Lon_2

Short-Term Borrowings and Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Summary of short-term borrowings	The table below presents a summary of the Company’s short-term borrowings, all of which mature within one year: (dollars in thousands) Federal Funds Purchased Customer Repurchase Agreements FHLB Borrowings December 31, 2023 Amount outstanding at year-end $ — $ — $ 1,500,000 Interest rate at year-end — % — % 5.64 % Average balance outstanding during the year $ — $ 25 $ 1,323,014 Weighted-average interest rate during the year — % 0.39 % 5.34 % Maximum month-end outstanding during the year $ — $ — $ 2,100,000 December 31, 2022 Amount outstanding at year-end $ — $ 1,142 $ 1,200,000 Interest rate at year-end — % 0.25 % 4.25 % Average balance outstanding during the year $ 30,741 $ 1,928 $ 1,797,082 Weighted-average interest rate during the year 1.17 % 0.28 % 1.60 % Maximum month-end outstanding during the year $ 525,000 $ 2,320 $ 2,650,000
Summary of short-term borrowing capacities	The following table summarizes the Company’s short-term borrowing capacities net of balances outstanding: (in thousands) December 31, 2023 December 31, 2022 FHLB borrowing capacity relating to loans and pledged securities $ 2,602,092 $ 2,621,218 FHLB borrowing capacity relating to unencumbered securities 3,737,615 3,539,297 Total FHLB borrowing capacity(1) $ 6,339,707 $ 6,160,515 Unused federal funds lines available from commercial banks $ 1,188,000 $ 1,479,000 Unused Federal Reserve borrowings capacity $ 4,094,801 $ 3,574,762 Unused revolving line of credit(2) $ 100,000 $ 75,000 (1) FHLB borrowings are collateralized by a blanket floating lien on certain real estate secured loans, mortgage finance assets and certain pledged securities. (2) Unsecured revolving, non-amortizing line of credit with maturity date of February 8, 2025. Proceeds may be used for general corporate purposes, including funding regulatory capital infusions into the Bank. The loan agreement contains customary financial covenants and restrictions. No borrowings were made against this line of credit during the twelve months ended December 31, 2023 or 2022. The line of credit was reduced to $75.0 million in the first quarter of 2024.
Summary of long-term debt	The table below presents a summary of long-term debt: (in thousands) December 31, 2023 December 31, 2022 Bank-issued floating rate senior unsecured credit-linked notes due 2024 $ 199,499 $ 272,492 Bank-issued 5.25% fixed rate subordinated notes due 2026 174,457 174,196 Company-issued 4.00% fixed rate subordinated notes due 2031 371,785 371,348 Trust preferred floating rate subordinated debentures due 2032 to 2036 113,406 113,406 Total long-term debt $ 859,147 $ 931,442
Summary of significant terms of preferred subordinated debentures	The following table summarizes the significant terms of the Company’s trust preferred subordinated debentures: (dollars in thousands) Texas Capital Texas Capital Texas Capital Texas Capital Texas Capital Date issued November 19, 2002 April 10, 2003 October 6, 2005 April 28, 2006 September 29, 2006 Trust preferred securities issued $10,310 $10,310 $25,774 $25,774 $41,238 Floating or fixed rate securities Floating Floating Floating Floating Floating Interest rate on subordinated debentures 3 month SOFR + 3.61% 3 month SOFR + 3.51% 3 month SOFR + 1.77% 3 month SOFR + 1.86% 3 month SOFR + 1.97% Maturity date November 2032 April 2033 December 2035 June 2036 December 2036

Financial Instruments with Of_2

Financial Instruments with Off-Balance Sheet Risk (Tables)	12 Months Ended
	Dec. 31, 2023
Risks and Uncertainties [Abstract]
Schedule of financial instruments with off-balance sheet risk	The table below presents the Company’s financial instruments with off-balance sheet risk, as well as the activity in the allowance for off-balance sheet credit losses related to those financial instruments. The changes made to the Company’s current expected credit loss model, as discussed in Note 1 - Operations and Summary of Significant Accounting Policies, resulted in a reallocation of the allowance for credit losses between loan portfolio segments and allowance balances allocated to off-balance sheet financial instruments, the results of which are included in the table below. The changes made result in a higher allocation of losses to off-balance sheet financial instruments. See Note 4 - Loans and Allowance for Credit Losses on Loans for information regarding the allowance for credit losses on loans. (in thousands) Commercial Mortgage Commercial Consumer Total Year Ended December 31, 2023 Beginning balance $ 16,550 $ — $ 5,222 $ 21 $ 21,793 Provision for off-balance sheet credit losses 19,490 6 4,925 148 24,569 Ending balance $ 36,040 $ 6 $ 10,147 $ 169 $ 46,362 Year Ended December 31, 2022 Beginning balance $ 15,107 $ — $ 2,136 $ 22 $ 17,265 Provision for off-balance sheet credit losses 1,443 — 3,086 (1) 4,528 Ending balance $ 16,550 $ — $ 5,222 $ 21 $ 21,793 (in thousands) December 31, 2023 December 31, 2022 Commitments to extend credit - period end balance $ 9,749,085 $ 9,673,082 Standby letters of credit - period end balance 595,079 417,896

Regulatory Ratios and Capital (

Regulatory Ratios and Capital (Tables)	12 Months Ended
	Dec. 31, 2023
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Schedule of compliance with Regulatory Capital Requirements	The table below summarizes the Company’s and the Bank’s actual and required capital ratios under the Basel III Capital Rules. The ratios presented below include the effects of the election to utilize the five-year CECL transition described above. Actual Minimum Capital Required(2) Capital Required to be Well Capitalized (dollars in thousands) Capital Amount Ratio Capital Amount Ratio Capital Amount Ratio December 31, 2023 CET1 Company $ 3,264,609 12.65 % $ 1,806,644 7.00 % N/A N/A Bank 3,599,919 14.01 % 1,798,495 7.00 % 1,670,031 6.50 % Total capital (to risk-weighted assets) Company 4,405,575 17.07 % 2,709,965 10.50 % 2,580,919 10.00 % Bank 3,959,100 15.41 % 2,697,742 10.50 % 2,569,278 10.00 % Tier 1 capital (to risk-weighted assets) Company 3,674,609 14.24 % 2,193,781 8.50 % 1,548,552 6.00 % Bank 3,599,919 14.01 % 2,183,886 8.50 % 2,055,422 8.00 % Tier 1 capital (to average assets)(1) Company 3,674,609 12.21 % 1,204,192 4.00 % N/A N/A Bank 3,599,919 12.00 % 1,200,091 4.00 % 1,500,113 5.00 % December 31, 2022 CET1 Company $ 3,180,208 13.00 % $ 1,712,608 7.00 % N/A N/A Bank 3,408,178 13.95 % 1,710,056 7.00 % 1,587,909 6.50 % Total capital (to risk-weighted assets) Company 4,331,098 17.70 % 2,568,912 10.50 % 2,446,583 10.00 % Bank 3,987,720 16.32 % 2,565,083 10.50 % 2,442,937 10.00 % Tier 1 capital (to risk-weighted assets) Company 3,590,208 14.67 % 2,079,595 8.50 % 1,467,950 6.00 % Bank 3,568,178 14.61 % 2,076,496 8.50 % 1,954,349 8.00 % Tier 1 capital (to average assets)(1) Company 3,590,208 11.54 % 1,244,494 4.00 % N/A N/A Bank 3,568,178 11.48 % 1,243,232 4.00 % 1,554,039 5.00 % (1) The Tier 1 capital ratio (to average assets) is not impacted by the Basel III Capital Rules; however, the Federal Reserve Board and the FDIC may require the Company and the Bank, respectively, to maintain a Tier 1 capital ratio (to average assets) above the required minimum. (2) Percentages represent the minimum capital ratios plus, as applicable, the fully phased-in 2.5% CET1 capital buffer under the Basel III Capital Rules.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2023
Compensation Related Costs [Abstract]
Schedule of stock appreciation rights activity	A summary of the Company’s SAR activity and related information is as follows. Grants of SARs include time-based vesting conditions that generally vest ratably over a period of five years. December 31, 2023 December 31, 2022 December 31, 2021 SARs Weighted Average Exercise Price SARs Weighted Average Exercise Price SARs Weighted Average Exercise Price Outstanding at beginning of year — $ — 3,000 $ 44.20 12,400 $ 43.48 Exercised — — (3,000) 44.20 (9,400) 43.24 Outstanding at year-end — $ — — $ — 3,000 $ 44.20 Vested and exercisable at year-end — $ — — $ — 3,000 $ 44.20 Weighted average remaining contractual life of vested (in years) 0.00 0.00 1.66 Weighted average remaining contractual life of outstanding (in years) 0.00 0.00 1.66 Compensation expense $ — $ — $ — Unrecognized compensation expense $ — $ — $ — Intrinsic value of exercised $ — $ 64,000 $ 302,000
Summary of status and changes in nonvested restricted stock units	A summary of the Company’s RSU activity and related information is as follows. Grants of RSUs include time-based vesting conditions that generally vest ratably over a period of three three December 31, 2023 December 31, 2022 December 31, 2021 RSUs Weighted RSUs Weighted RSUs Weighted Outstanding at beginning of year 1,155,652 $ 61.12 1,206,862 $ 56.06 955,594 $ 48.76 Granted 405,434 68.63 453,323 68.15 677,472 66.31 Vested (355,046) 50.79 (308,771) 54.51 (187,530) 58.82 Forfeited (124,361) 66.98 (195,762) 58.42 (238,674) 53.76 Outstanding at year-end 1,081,679 $ 66.91 1,155,652 $ 61.12 1,206,862 $ 56.06 Compensation expense $ 24,200,000 $ 21,246,000 $ 30,060,000 Unrecognized compensation expense $ 28,585,000 $ 32,148,000 $ 32,525,000 Weighted average years over which unrecognized compensation expense is expected to be recognized 1.89 2.31 2.79 Fair value of shares vested during the year $ 18,117,000 $ 16,835,000 $ 11,030,000 Intrinsic value of shares vested during the year $ 20,125,000 $ 18,640,000 $ 12,870,000

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Schedule of income tax expense/(benefit)	Income tax expense/(benefit) consists of the following: Year ended December 31, (in thousands) 2023 2022 2021 Current: Federal $ 69,350 $ 109,370 $ 97,608 State 5,888 7,302 6,761 Total 75,238 116,672 104,369 Deferred: Federal (16,540) (16,178) (19,020) State (1,244) (1,217) (1,233) Total (17,784) (17,395) (20,253) Total expense: Federal 52,810 93,192 78,588 State 4,644 6,085 5,528 Total $ 57,454 $ 99,277 $ 84,116
Reconciliation of income attributable to continuing operations	The reconciliation of income tax at the U.S. federal statutory tax rate to income tax expense and effective tax rate is as follows: Year ended December 31, 2023 2022 2021 (dollars in thousands) Amount Rate Amount Rate Amount Rate U.S. statutory rate $ 51,785 21 % $ 90,669 21 % $ 70,992 21 % State taxes 2,938 1 % 6,822 2 % 4,108 1 % Tax-exempt income (350) — % (1,061) — % (1,855) (1) % Tax credits (855) — % (128) — % (179) — % Disallowed FDIC 1,863 1 % 1,491 — % 2,936 1 % Disallowed compensation 1,176 — % 2,771 1 % 6,377 2 % Other 897 — % (1,287) (1) % 1,737 1 % Total $ 57,454 23 % $ 99,277 23 % $ 84,116 25 %
Schedule of deferred tax assets and liabilities	The table below summarizes significant components of deferred tax assets and liabilities utilizing the federal corporate income tax rate of 21%. Management believes it is more likely than not that all of the deferred tax assets will be realized. December 31, (in thousands) 2023 2022 Deferred tax assets: Allowance for credit losses $ 66,913 $ 62,154 Lease liabilities 25,080 24,091 Loan origination fees 14,928 14,385 Stock compensation 6,216 5,031 Non-accrual interest 1,672 1,132 Non-qualified deferred compensation 4,603 4,782 Net unrealized losses in AOCI 96,229 111,365 Other 15,079 4,678 Total deferred tax assets 230,720 227,618 Deferred tax liabilities: Loan origination costs (1,551) (3,217) Leases (9,741) (12,863) Lease ROU assets (21,225) (19,807) Depreciation (12,414) (9,034) Other (728) (284) Total deferred tax liabilities (45,659) (45,205) Net deferred tax asset $ 185,061 $ 182,413

Fair Value Disclosures (Tables)

Fair Value Disclosures (Tables)	12 Months Ended
	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value	Assets and liabilities measured at fair value are as follows: Fair Value Measurements Using (in thousands) Level 1 Level 2 Level 3 December 31, 2023 Available-for-sale debt securities:(1) U.S. Treasury securities $ 636,473 $ — $ — U.S. government agency securities — 106,592 — Residential mortgage-backed securities — 2,470,832 — CRT securities — — 11,995 Equity securities(1)(2) 40,661 11,164 — Mortgage loans held for sale(3) — 706 — Loans held for investment(4) — — 38,341 Derivative assets(5) — 32,944 — Securities sold not yet purchased(6) 10,602 — — Derivative liabilities(5) — 70,917 — Non-qualified deferred compensation plan liabilities(7) 20,387 — — December 31, 2022 Available-for-sale debt securities:(1) U.S. Treasury securities $ 670,582 $ — $ — U.S. government agency securities — 102,154 — Residential mortgage-backed securities — 1,831,047 — CRT securities — — 11,861 Equity securities(1)(2) 22,879 11,077 — Derivative assets(5) — 13,504 — Derivative liabilities(5) — 91,758 — Non-qualified deferred compensation plan liabilities(7) 21,177 — — (1) Investment securities are measured at fair value on a recurring basis, generally monthly. (2) Equity securities consist of investments that qualify for consideration under the regulations implementing the Community Reinvestment Act and investments in exchange traded funds. (3) Loans held for sale are measured at fair value on a recurring basis, generally monthly. (4) Includes certain collateral-dependent loans held for investment for which a specific allocation of the allowance for credit losses is based upon the fair value of the loan’s underlying collateral. These loans held for investment are measured on a nonrecurring basis, generally annually or more often as warranted by market and economic conditions. (5) Derivative assets and liabilities are measured at fair value on a recurring basis, generally quarterly. (6) Securities sold not yet purchased are measured at fair value on a recurring basis, generally monthly. (7) Non-qualified deferred compensation plan liabilities represent the fair value of the obligation to the employee, which generally corresponds to the fair value of the invested assets, and are measured at fair value on a recurring basis, generally monthly.
Level 3 Fair Value Assets Measured on a Recurring Basis	The following table presents a reconciliation of the level 3 fair value category measured at fair value on a recurring basis: Net Gains/(Losses) (in thousands) Balance at Beginning of Period Purchases / Additions Sales / Reductions Realized Unrealized Balance at End of Period Year Ended December 31, 2023 Available-for-sale debt securities:(1) CRT securities $ 11,861 $ — $ (1,077) $ — $ 1,211 $ 11,995 Year Ended December 31, 2022 Available-for-sale debt securities:(1) Tax-exempt asset-backed securities $ 180,033 $ — $ (170,626) $ — $ (9,407) $ — CRT securities 11,846 — — — 15 11,861 Loans held for sale(2) 7,658 1,569 (8,132) (1,095) — — (1) Unrealized gains/(losses) on available-for-sale debt securities are recorded in AOCI other non-interest income (2) Realized and unrealized gains/(losses) on loans held for sale are recorded in other non-interest income
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: Carrying Estimated Fair Value (in thousands) Total Level 1 Level 2 Level 3 December 31, 2023 Financial assets: Cash and cash equivalents $ 3,242,850 $ 3,242,850 $ 3,242,850 $ — $ — Available-for-sale debt securities 3,225,892 3,225,892 636,473 2,577,424 11,995 Held-to-maturity debt securities 865,477 763,844 — 763,844 — Equity securities 51,825 51,825 40,661 11,164 — Loans held for sale 44,105 44,105 15,000 29,105 — Loans held for investment, net 20,090,585 20,050,974 — — 20,050,974 Derivative assets 32,944 32,944 — 32,944 — Financial liabilities: Total deposits 22,371,839 22,379,452 — — 22,379,452 Short-term borrowings 1,500,000 1,500,000 — 1,500,000 — Long-term debt 859,147 801,309 — 801,309 — Securities sold not yet purchased 10,602 10,602 10,602 — — Derivative liabilities 70,917 70,917 — 70,917 — December 31, 2022 Financial assets: Cash and cash equivalents $ 5,012,260 $ 5,012,260 $ 5,012,260 $ — $ — Available-for-sale debt securities 2,615,644 2,615,644 670,582 1,933,201 11,861 Held-to-maturity debt securities 935,514 816,914 — 816,914 — Equity securities 33,956 33,956 22,879 11,077 — Loans held for sale 36,357 36,357 — — 36,357 Loans held for investment, net 19,033,871 18,969,922 — — 18,969,922 Derivative assets 13,504 13,504 — 13,504 — Financial liabilities: Total deposits 22,856,880 22,857,949 — — 22,857,949 Short-term borrowings 1,201,142 1,201,142 — 1,201,142 — Long-term debt 931,442 881,716 — 881,716 — Derivative liabilities 91,758 91,758 — 91,758 —

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The notional amounts and estimated fair values of derivative positions outstanding are presented in the following table. December 31, 2023 December 31, 2022 Estimated Fair Value Estimated Fair Value (in thousands) Notional Asset Derivative Liability Derivative Notional Asset Derivative Liability Derivative Derivatives designated as hedges Cash flow hedges: Interest rate contracts: Swaps hedging loans $ 2,850,000 $ 668 $ 57,961 $ 3,000,000 $ — $ 86,378 Non-hedging derivatives Customer-initiated and other derivatives: Foreign currency forward contracts 4,824 52 31 — — — Interest rate contracts: Swaps 5,673,822 65,247 69,863 4,396,367 83,529 83,529 Caps and floors written 637,971 1,654 2,228 220,142 — 2,583 Caps and floors purchased 637,971 2,228 1,654 220,142 2,583 — Forward contracts 8,665,675 39,123 38,570 1,569,326 4,431 4,053 Gross derivatives 108,972 170,307 90,543 176,543 Netting adjustment - offsetting derivative assets/liabilities (37,346) (37,346) (5,164) (5,164) Netting adjustment - cash collateral received/posted (38,682) (62,044) (71,875) (79,621) Net derivatives included on the consolidated balance sheets $ 32,944 $ 70,917 $ 13,504 $ 91,758

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table provides the change in AOCI by component: (in thousands) Cash Flow Hedges Available-for-Sale Securities Held-to-Maturity Securities Total Year Ended December 31, 2023 Beginning balance $ (66,394) $ (304,309) $ (48,240) $ (418,943) Change in unrealized gain/(loss) (34,778) 38,612 — 3,834 Amounts reclassified into net income 60,911 — 7,330 68,241 Total other comprehensive income/(loss) 26,133 38,612 7,330 72,075 Income tax expense/(benefit) 5,488 8,109 1,539 15,136 Total other comprehensive income/(loss), net of tax 20,645 30,503 5,791 56,939 Ending balance $ (45,749) $ (273,806) $ (42,449) $ (362,004) Year Ended December 31, 2022 Beginning balance $ — $ (47,715) $ — $ (47,715) Change in unrealized gain/(loss) (85,846) (324,803) (69,165) (479,814) Amounts reclassified into net income 1,803 — 8,102 9,905 Total other comprehensive income/(loss) (84,043) (324,803) (61,063) (469,909) Income tax expense/(benefit) (17,649) (68,209) (12,823) (98,681) Total other comprehensive income/(loss), net of tax (66,394) (256,594) (48,240) (371,228) Ending balance $ (66,394) $ (304,309) $ (48,240) $ (418,943)

Parent Company Only (Tables)

Parent Company Only (Tables)	12 Months Ended
	Dec. 31, 2023
Condensed Financial Information Disclosure [Abstract]
Balance Sheet	Summarized financial information for Texas Capital Bancshares, Inc. are as follows: Balance Sheet December 31, (in thousands) 2023 2022 Assets Cash and cash equivalents $ 301,672 $ 245,777 Investment securities 18,845 — Investment in subsidiaries 3,306,095 3,183,767 Other assets 55,949 93,395 Total assets $ 3,682,561 $ 3,522,939 Liabilities and Stockholders’ Equity Liabilities: Other liabilities $ 23,695 $ 6,754 Long-term debt 485,191 484,754 Total liabilities 508,886 491,508 Stockholders’ Equity: Preferred stock 300,000 300,000 Common stock 511 509 Additional paid-in capital 1,045,576 1,025,593 Retained earnings 2,409,926 2,239,582 Treasury stock (220,334) (115,310) Accumulated other comprehensive income/(loss) (362,004) (418,943) Total stockholders’ equity 3,173,675 3,031,431 Total liabilities and stockholders’ equity $ 3,682,561 $ 3,522,939
Statement of Earnings	Statement of Income Year ended December 31, (in thousands) 2023 2022 2021 Interest on notes receivable $ 2,167 $ 3,250 $ 3,404 Dividend income 7,671 10,529 10,472 Other income (94) 9 5 Total income 9,744 13,788 13,881 Interest expense 23,714 19,721 15,946 Salaries and benefits 835 782 720 Legal and professional 1,504 1,583 1,803 Other non-interest expense 1,823 1,636 4,375 Total expense 27,876 23,722 22,844 Loss before income taxes and equity in undistributed income of subsidiary (18,132) (9,934) (8,963) Income tax benefit (4,537) (2,282) (2,179) Loss before equity in undistributed income of subsidiary (13,595) (7,652) (6,784) Equity in undistributed income of subsidiary 201,189 337,946 258,539 Net income 187,594 330,294 251,755 Preferred stock dividends 17,250 17,250 18,721 Net income available to common stockholders $ 170,344 $ 313,044 $ 233,034
Statement of Cash Flows	Statements of Cash Flows Year ended December 31, (in thousands) 2023 2022 2021 Operating Activities Net income $ 187,594 $ 330,294 $ 251,755 Adjustments to reconcile net income to net cash provided by/(used in) operating activities: Equity in undistributed income of subsidiary (201,189) (337,946) (258,539) Amortization expense 437 438 2,469 Changes in operating assets and liabilities: Accrued interest receivable and other assets 36,938 (2,095) (1,750) Accrued interest payable and other liabilities 16,941 3,086 2,348 Net cash used in operating activities 40,721 (6,223) (3,717) Investing Activities Sales/(purchases) of equity securities, net (18,337) — — Net decrease in loans held for investment — — 7,500 Repayments of investments in/(advances to) subsidiaries 160,000 (50,000) — Net cash provided by/(used in) investing activities 141,663 (50,000) 7,500 Financing Activities Issuance of stock related to stock-based awards (4,215) (4,209) (3,121) Net proceeds from issuance of preferred stock — — 289,723 Redemption of preferred stock — — (150,000) Preferred stock dividends paid (17,250) (17,250) (18,721) Repurchase of common stock (105,024) (115,302) — Redemption of long-term debt — — (111,000) Net proceeds from Issuance of long-term debt — — 370,625 Net cash provided by/(used in) financing activities (126,489) (136,761) 377,506 Net increase/(decrease) in cash and cash equivalents 55,895 (192,984) 381,289 Cash and cash equivalents at beginning of year 245,777 438,761 57,472 Cash and cash equivalents at end of year $ 301,672 $ 245,777 $ 438,761

Operations and Summary of Sig_3

Operations and Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Goodwill	$ 1,500	$ 1,500
Amortization expense related to intangible assets	$ 0	$ 338	$ 405
Minimum
Property, Plant and Equipment [Line Items]
PPE, useful life	3 years
Finite-lived intangible asset, useful life	1 year
Maximum
Property, Plant and Equipment [Line Items]
PPE, useful life	5 years
Finite-lived intangible asset, useful life	5 years

Operations and Summary of Sig_4

Operations and Summary of Significant Accounting Policies - Investment Banking and Trading Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Investment banking and advisory fees	$ 61,366	$ 24,974	$ 22,007
Trading income	24,816	10,080	2,434
Total	$ 86,182	$ 35,054	$ 24,441

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net income	$ 189,141	$ 332,478	$ 253,939
Preferred stock dividends	17,250	17,250	18,721
Net income available to common stockholders	$ 171,891	$ 315,228	$ 235,218
Denominator:
Basic earnings per common share—weighted average common shares	48,054,935	50,457,746	50,580,660
Effect of employee stock-based awards	555,271	588,996	560,314
Dilutive earnings per common share—weighted average diluted common shares	48,610,206	51,046,742	51,140,974
Basic earnings per common share (in usd per share)	$ 3.58	$ 6.25	$ 4.65
Diluted earnings per common share (in usd per share)	$ 3.54	$ 6.18	$ 4.60
Anti-dilutive outstanding stock-settled awards	97,368	311,226	93,945

Investment Securities - Summary

Investment Securities - Summary of Available-for-Sale Debt Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Available-for-sale debt securities:
Amortized Cost	$ 3,572,482	$ 3,000,846
Gross Unrealized Gains	540	3
Gross Unrealized Losses	(347,130)	(385,205)
Estimated Fair Value	3,225,892	2,615,644
Held-to-maturity debt securities:
Held-to-maturity debt securities	865,477	935,514
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(101,633)	(118,600)
Estimated Fair Value	763,844	816,914
Equity securities at fair value	51,825	33,956
Total investment securities	4,143,194	3,585,114
Interest receivable	118,100	100,400
Available-for-sale Securities
Available-for-sale debt securities:
Amortized Cost	3,572,482
Estimated Fair Value	3,225,892
Held-to-maturity debt securities:
Interest receivable	9,500	6,600
Held-to-Maturity Securities
Held-to-maturity debt securities:
Estimated Fair Value	763,844
Interest receivable	1,400	1,500
U.S. Treasury securities
Available-for-sale debt securities:
Amortized Cost	651,112	698,769
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(14,639)	(28,187)
Estimated Fair Value	636,473	670,582
U.S. government agency securities
Available-for-sale debt securities:
Amortized Cost	125,000	125,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(18,408)	(22,846)
Estimated Fair Value	106,592	102,154
Residential mortgage-backed securities
Available-for-sale debt securities:
Amortized Cost	2,782,734	2,162,364
Gross Unrealized Gains	540	3
Gross Unrealized Losses	(312,442)	(331,320)
Estimated Fair Value	2,470,832	1,831,047
Held-to-maturity debt securities:
Held-to-maturity debt securities	865,477	935,514
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(101,633)	(118,600)
Estimated Fair Value	763,844	816,914
CRT securities
Available-for-sale debt securities:
Amortized Cost	13,636	14,713
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,641)	(2,852)
Estimated Fair Value	$ 11,995	$ 11,861

Investment Securities - Narrati

Investment Securities - Narrative (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022 USD ($)	Dec. 31, 2023 USD ($) security	Dec. 31, 2022 USD ($)
Debt Securities, Available-for-sale [Line Items]
Number of securities in an unrealized loss position | security		108
Expected loss on held-to-maturity securities		$ 0
Allowance for credit losses on available-for-sale debt securities		0	$ 0
Allowance for credit losses on held-to-maturity debt securities		$ 0	0
Held-to-Maturity Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities transferred to held-to-maturity	$ 56,400
Realized gain	$ 489
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Number of securities in an unrealized loss position | security		11
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Number of securities in an unrealized loss position | security		5
CRT securities
Debt Securities, Available-for-sale [Line Items]
Number of securities in an unrealized loss position | security		2
Residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Number of securities in an unrealized loss position | security		90
Customer repurchase agreements
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities pledged to secure certain customer repurchase agreements and deposits			16,100
Deposits
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities pledged to secure certain customer repurchase agreements and deposits		$ 1,600	$ 1,400

Investment Securities - Schedul

Investment Securities - Schedule of Amortized Cost and Estimated Fair Value of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Amortized Cost
Amortized Cost	$ 3,572,482	$ 3,000,846
Fair Value
Fair Value	3,225,892	2,615,644
Fair Value
Fair Value	763,844	$ 816,914
Available-for-sale Securities
Amortized Cost
Due within one year	251,438
Due after one year through five years	449,674
Due after five years through ten years	105,690
Due after ten years	2,765,680
Amortized Cost	3,572,482
Fair Value
Due within one year	250,610
Due after one year through five years	430,022
Due after five years through ten years	89,141
Due after ten years	2,456,119
Fair Value	3,225,892
Held-to-Maturity Securities
Amortized Cost
Due within one year	0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	865,477
Amortized Cost	865,477
Fair Value
Due within one year	0
Due after one year through five years	0
Due after five years through ten years	0
Due after ten years	763,844
Fair Value	$ 763,844

Investment Securities - Weighte

Investment Securities - Weighted Average Yields for Available-for-Sale Debt Securities (Details)	Dec. 31, 2023
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Due within one year	1.16%
Due after one year through five years	2.70%
Due after five years through ten years	0%
Due after ten years	0%
Total	2.11%
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Due within one year	0%
Due after one year through five years	1%
Due after five years through ten years	1.21%
Due after ten years	0%
Total	1.13%
Residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Due within one year	0%
Due after one year through five years	0%
Due after five years through ten years	1.20%
Due after ten years	2.79%
Total	2.78%
CRT securities
Debt Securities, Available-for-sale [Line Items]
Due within one year	0%
Due after one year through five years	0%
Due after five years through ten years	5.51%
Due after ten years	0%
Total	5.51%

Investment Securities - Sched_2

Investment Securities - Schedule of Available-for-Sale Debt Securities in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	$ 910,999	$ 932,084
Less Than 12 Months, Unrealized Loss	(19,751)	(37,668)
12 Months or Longer, Fair Value	2,256,400	1,683,122
12 Months or Longer, Unrealized Loss	(327,379)	(347,537)
Total, Fair Value	3,167,399	2,615,206
Total, Unrealized Loss	(347,130)	(385,205)
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	0	670,582
Less Than 12 Months, Unrealized Loss	0	(28,187)
12 Months or Longer, Fair Value	636,473	0
12 Months or Longer, Unrealized Loss	(14,639)	0
Total, Fair Value	636,473	670,582
Total, Unrealized Loss	(14,639)	(28,187)
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	0	0
Less Than 12 Months, Unrealized Loss	0	0
12 Months or Longer, Fair Value	106,592	102,154
12 Months or Longer, Unrealized Loss	(18,408)	(22,846)
Total, Fair Value	106,592	102,154
Total, Unrealized Loss	(18,408)	(22,846)
Residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	910,999	261,502
Less Than 12 Months, Unrealized Loss	(19,751)	(9,481)
12 Months or Longer, Fair Value	1,501,340	1,569,107
12 Months or Longer, Unrealized Loss	(292,691)	(321,839)
Total, Fair Value	2,412,339	1,830,609
Total, Unrealized Loss	(312,442)	(331,320)
CRT securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	0	0
Less Than 12 Months, Unrealized Loss	0	0
12 Months or Longer, Fair Value	11,995	11,861
12 Months or Longer, Unrealized Loss	(1,641)	(2,852)
Total, Fair Value	11,995	11,861
Total, Unrealized Loss	$ (1,641)	$ (2,852)

Investment Securities - Summa_2

Investment Securities - Summary of Unrealized and Realized Gains/(Losses) Recognized in Net Income on Equity Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Net gains/(losses) recognized during the period	$ 3,571	$ (7,876)
Less: Realized net gains/(losses) recognized on securities sold	393	(714)
Unrealized net gains/(losses) recognized on securities still held	$ 3,964	$ (8,590)

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses on Loans - Loans Held for Investment by Portfolio Segment (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 20,420,816,000	$ 19,350,920,000
Unearned income (net of direct origination costs)	(80,258,000)	(63,580,000)
Total loans held for investment	20,340,558,000	19,287,340,000
Allowance for credit losses on loans	(249,973,000)	(253,469,000)	$ (211,866,000)
Loans held for investment, net	20,090,585,000	19,033,871,000
Loans held for sale	44,105,000	36,357,000
Interest receivable	118,100,000	100,400,000
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	10,410,766,000	9,832,676,000
Allowance for credit losses on loans	(171,437,000)	(185,303,000)	(154,360,000)
Loans held for sale	43,399,000	36,357,000
Mortgage finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,978,328,000	4,090,033,000
Allowance for credit losses on loans	(4,173,000)	(10,745,000)	(6,083,000)
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,500,774,000	4,875,363,000
Allowance for credit losses on loans	(71,829,000)	(54,268,000)	(48,247,000)
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	530,948,000	552,848,000
Allowance for credit losses on loans	(2,534,000)	(3,153,000)	$ (3,176,000)
Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale	$ 706,000	$ 0

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses on Loans - Loans by Investment Grade (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	$ 2,183,954	$ 3,493,951
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	3,497,551	1,836,385
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	1,490,895	1,020,170
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	657,182	876,155
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	524,006	669,359
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	893,218	803,061
Revolving lines of credit	11,129,125	10,585,289
Revolving lines of credit converted to term loans	44,885	66,550
Total	20,420,816	19,350,920
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	8,364
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	5,090
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	25,578
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	15,243
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	883
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff	698
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	871
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	56,727	23,569
Commercial
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	1,590,277	2,051,137
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,612,768	757,872
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	324,559	245,404
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	165,616	324,837
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	158,204	355,256
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	179,111	241,653
Revolving lines of credit	6,363,562	5,833,334
Revolving lines of credit converted to term loans	16,669	23,183
Total	10,410,766	9,832,676
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	51,186	23,219
Commercial | Pass
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	1,546,257	2,022,950
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,408,672	678,473
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	279,266	240,511
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	144,699	254,985
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	142,301	322,099
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	157,808	227,853
Revolving lines of credit	6,284,464	5,694,352
Revolving lines of credit converted to term loans	16,580	20,933
Total	9,980,047	9,462,156
Commercial | Special mention
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	22,148	9,141
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	118,991	7,740
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	35,619	3,628
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	285	37,794
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	823	11,998
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	13,385	4,975
Revolving lines of credit	40,647	95,310
Revolving lines of credit converted to term loans	89	2,250
Total	231,987	172,836
Commercial | Substandard - accruing
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	12,477	18,670
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	50,876	71,147
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	9,334	514
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	18,547	1,666
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	14,933
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	78	6,305
Revolving lines of credit	38,372	37,407
Revolving lines of credit converted to term loans	0	0
Total	129,684	150,642
Commercial | Non-accrual
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	9,395	376
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	34,229	512
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	340	751
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	2,085	30,392
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	15,080	6,226
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	7,840	2,520
Revolving lines of credit	79	6,265
Revolving lines of credit converted to term loans	0	0
Total	69,048	47,042
Mortgage finance
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving lines of credit	3,978,328	4,090,033
Revolving lines of credit converted to term loans	0	0
Total	3,978,328	4,090,033
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	0
Mortgage finance | Pass
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving lines of credit	3,978,328	4,090,033
Revolving lines of credit converted to term loans	0	0
Total	3,978,328	4,090,033
Mortgage finance | Special mention
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving lines of credit	0	0
Revolving lines of credit converted to term loans	0	0
Total	0	0
Mortgage finance | Substandard - accruing
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving lines of credit	0	0
Revolving lines of credit converted to term loans	0	0
Total	0	0
Mortgage finance | Non-accrual
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving lines of credit	0	0
Revolving lines of credit converted to term loans	0	0
Total	0	0
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	561,801	1,373,494
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,828,358	983,043
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	1,088,240	717,706
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	444,143	526,512
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	351,661	294,048
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	610,432	471,489
Revolving lines of credit	587,964	465,834
Revolving lines of credit converted to term loans	28,175	43,237
Total	5,500,774	4,875,363
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	5,500	350
Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	561,801	1,362,160
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,689,325	958,669
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	1,042,953	670,113
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	419,703	520,970
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	317,480	263,240
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	559,026	448,536
Revolving lines of credit	575,928	465,834
Revolving lines of credit converted to term loans	28,175	43,237
Total	5,194,391	4,732,759
Commercial real estate | Special mention
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	3,494
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	136,801	6,524
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	32,937	46,512
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	24,440	5,295
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	34,181	19,350
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	22,833	4,038
Revolving lines of credit	7,895	0
Revolving lines of credit converted to term loans	0	0
Total	259,087	85,213
Commercial real estate | Substandard - accruing
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	7,840
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,232	17,850
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	247
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	11,458
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	28,573	18,733
Revolving lines of credit	4,141	0
Revolving lines of credit converted to term loans	0	0
Total	34,946	56,128
Commercial real estate | Non-accrual
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	12,350	1,081
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	0	182
Revolving lines of credit	0	0
Revolving lines of credit converted to term loans	0	0
Total	12,350	1,263
Consumer
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	31,876	69,320
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	56,425	95,470
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	78,096	57,060
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	47,423	24,806
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	14,141	20,055
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	103,675	89,919
Revolving lines of credit	199,271	196,088
Revolving lines of credit converted to term loans	41	130
Total	530,948	552,848
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	41	0
Consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	31,876	69,320
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	56,425	95,470
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	78,096	57,060
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	47,423	24,773
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	14,141	20,055
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	102,691	89,919
Revolving lines of credit	199,171	196,088
Revolving lines of credit converted to term loans	0	130
Total	529,823	552,815
Consumer | Special mention
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving lines of credit	100	0
Revolving lines of credit converted to term loans	41	0
Total	141	0
Consumer | Substandard - accruing
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	984	0
Revolving lines of credit	0	0
Revolving lines of credit converted to term loans	0	0
Total	984	0
Consumer | Non-accrual
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	33
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving lines of credit	0	0
Revolving lines of credit converted to term loans	0	0
Total	$ 0	$ 33

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses on Loans - Allowance Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 253,469	$ 211,866
Provision for credit losses on loans	47,431	61,472
Charge-offs	56,727	23,569
Recoveries	5,800	3,700
Net charge-offs (recoveries)	50,927	19,869
Ending balance	249,973	253,469
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	185,303	154,360
Provision for credit losses on loans	31,529	50,485
Charge-offs	51,186	23,219
Recoveries	5,791	3,677
Net charge-offs (recoveries)	45,395	19,542
Ending balance	171,437	185,303
Mortgage finance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	10,745	6,083
Provision for credit losses on loans	(6,572)	4,662
Charge-offs	0	0
Recoveries	0	0
Net charge-offs (recoveries)	0	0
Ending balance	4,173	10,745
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	54,268	48,247
Provision for credit losses on loans	23,057	6,371
Charge-offs	5,500	350
Recoveries	4	0
Net charge-offs (recoveries)	5,496	350
Ending balance	71,829	54,268
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,153	3,176
Provision for credit losses on loans	(583)	(46)
Charge-offs	41	0
Recoveries	5	23
Net charge-offs (recoveries)	36	(23)
Ending balance	$ 2,534	$ 3,153

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses on Loans - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses on loans	$ 47,431	$ 61,472
Net charge-offs (recoveries)	50,927	19,869
Loan balance	20,420,816	19,350,920
Accrual loans that met the criteria for restructured		0
Nonaccrual loans that met the criteria for restructured		531
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses on loans	31,529	50,485
Net charge-offs (recoveries)	45,395	19,542
Loan balance	10,410,766	9,832,676
Loans subsequently defaulted	6,300
Commercial | Asset Pledged as Collateral
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan balance	46,000
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses on loans	23,057	6,371
Net charge-offs (recoveries)	5,496	350
Loan balance	5,500,774	4,875,363
Commercial real estate | Asset Pledged as Collateral
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan balance	12,400
Criticized
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan balance	738,200	513,200
Leveraged Lending
Financing Receivable, Allowance for Credit Losses [Line Items]
Net charge-offs (recoveries)		$ 19,900
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses on loans	$ 47,400

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses on Loans - Age Analysis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	$ 20,420,816	$ 19,350,920
Non-accrual	81,398
Non-accrual With No Allowance	7,773
Non-accrual loans earning interest income on cash basis	358	2,200
Interest income on non-accrual loans	37	801
Interest Income Reversed	3,000	1,600
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	10,410,766	9,832,676
Non-accrual	69,048
Non-accrual With No Allowance	7,773
Mortgage finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	3,978,328	4,090,033
Non-accrual	0
Non-accrual With No Allowance	0
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	5,500,774	4,875,363
Non-accrual	12,350
Non-accrual With No Allowance	0
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	530,948	$ 552,848
Non-accrual	0
Non-accrual With No Allowance	0
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	4,611
30-59 Days Past Due | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	2,642
30-59 Days Past Due | Mortgage finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0
30-59 Days Past Due | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	679
30-59 Days Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	1,290
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	13,724
60-89 Days Past Due | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	9,584
60-89 Days Past Due | Mortgage finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0
60-89 Days Past Due | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	4,140
60-89 Days Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	19,523
90 Days or More Past Due | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	18,540
90 Days or More Past Due | Mortgage finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0
90 Days or More Past Due | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0
90 Days or More Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	983
Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	37,858
Total Past Due | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	30,766
Total Past Due | Mortgage finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0
Total Past Due | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	4,819
Total Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	2,273
Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	20,301,560
Current | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	10,310,952
Current | Mortgage finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	3,978,328
Current | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	5,483,605
Current | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	$ 528,675

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses on Loans - Summary of Amortized Cost of Gross Modified Loans Held for Investment (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Financing Receivable, Modifications [Line Items]
Total modified in period	$ 64,492
Percentage of Total Loans Held for Investment	0.32%
Payment Deferral
Financing Receivable, Modifications [Line Items]
Total modified in period	$ 30,873
Term Extension
Financing Receivable, Modifications [Line Items]
Total modified in period	22,097
Payment Deferral and Term Extension
Financing Receivable, Modifications [Line Items]
Total modified in period	5,458
Interest Rate Reduction and Term Extension
Financing Receivable, Modifications [Line Items]
Total modified in period	6,064
Commercial
Financing Receivable, Modifications [Line Items]
Total modified in period	$ 43,128
Percentage of Total Loans Held for Investment	0.21%
Commercial | Payment Deferral
Financing Receivable, Modifications [Line Items]
Total modified in period	$ 30,873
Commercial | Term Extension
Financing Receivable, Modifications [Line Items]
Total modified in period	733
Commercial | Payment Deferral and Term Extension
Financing Receivable, Modifications [Line Items]
Total modified in period	5,458
Commercial | Interest Rate Reduction and Term Extension
Financing Receivable, Modifications [Line Items]
Total modified in period	6,064
Commercial real estate
Financing Receivable, Modifications [Line Items]
Total modified in period	$ 21,364
Percentage of Total Loans Held for Investment	0.10%
Commercial real estate | Payment Deferral
Financing Receivable, Modifications [Line Items]
Total modified in period	$ 0
Commercial real estate | Term Extension
Financing Receivable, Modifications [Line Items]
Total modified in period	21,364
Commercial real estate | Payment Deferral and Term Extension
Financing Receivable, Modifications [Line Items]
Total modified in period	0
Commercial real estate | Interest Rate Reduction and Term Extension
Financing Receivable, Modifications [Line Items]
Total modified in period	$ 0

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses on Loans - Summary of Financial Impacts of Loan Modifications (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Commercial
Financing Receivable, Modifications [Line Items]
Interest Rate Reduction	0.70%
Total Payment Deferrals (in thousands)	$ 5,139
Commercial | Minimum
Financing Receivable, Modifications [Line Items]
Term Extension (in months)	4 months
Commercial | Maximum
Financing Receivable, Modifications [Line Items]
Term Extension (in months)	36 months
Commercial real estate
Financing Receivable, Modifications [Line Items]
Interest Rate Reduction	0%
Total Payment Deferrals (in thousands)	$ 0
Commercial real estate | Minimum
Financing Receivable, Modifications [Line Items]
Term Extension (in months)	4 months
Commercial real estate | Maximum
Financing Receivable, Modifications [Line Items]
Term Extension (in months)	6 months

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses on Loans - Schedule of Age Analysis of Gross Modified Loans Held for Investment (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Financing Receivable, Modifications [Line Items]
Total	$ 64,492
30-89 Days Past Due
Financing Receivable, Modifications [Line Items]
Total	11,758
90+ Days Past Due
Financing Receivable, Modifications [Line Items]
Total	0
Non-Accrual
Financing Receivable, Modifications [Line Items]
Total	11,601
Current
Financing Receivable, Modifications [Line Items]
Total	41,133
Commercial
Financing Receivable, Modifications [Line Items]
Total	43,128
Commercial | 30-89 Days Past Due
Financing Receivable, Modifications [Line Items]
Total	7,617
Commercial | 90+ Days Past Due
Financing Receivable, Modifications [Line Items]
Total	0
Commercial | Non-Accrual
Financing Receivable, Modifications [Line Items]
Total	11,601
Commercial | Current
Financing Receivable, Modifications [Line Items]
Total	23,910
Commercial real estate
Financing Receivable, Modifications [Line Items]
Total	21,364
Commercial real estate | 30-89 Days Past Due
Financing Receivable, Modifications [Line Items]
Total	4,141
Commercial real estate | 90+ Days Past Due
Financing Receivable, Modifications [Line Items]
Total	0
Commercial real estate | Non-Accrual
Financing Receivable, Modifications [Line Items]
Total	0
Commercial real estate | Current
Financing Receivable, Modifications [Line Items]
Total	$ 17,223

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses on Loans - Troubled Debt Restructuring (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) loan
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	1
Balance at Period End | $	$ 531
Extended Maturity
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0
Balance at Period End | $	$ 0
Adjusted Payment Schedule
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	1
Balance at Period End | $	$ 531
Commercial
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	1
Balance at Period End | $	$ 531
Commercial | Extended Maturity
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0
Balance at Period End | $	$ 0
Commercial | Adjusted Payment Schedule
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	1
Balance at Period End | $	$ 531

Leases - ROU Assets and Lease L

Leases - ROU Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
ROU assets, finance leases	$ 1,529	$ 2,865
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
ROU assets, operating leases	$ 87,810	$ 79,889
Total ROU assets	$ 89,339	$ 82,754
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Finance Lease, Liability	$ 1,550	$ 2,877
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Lease liabilities, operating leases	$ 109,523	$ 103,814
Total lease liabilities	$ 111,073	$ 106,691

Leases - Narrative (Details)

Leases - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Lessee, Lease, Description [Line Items]
Term of finance lease contract	1 year
Future payments for leases that have not yet commenced	$ 133.1
Minimum
Lessee, Lease, Description [Line Items]
Lease terms for leases that have not yet commenced	10 years
Minimum | Office Space and Bank Branches
Lessee, Lease, Description [Line Items]
Term of operating lease contract	1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease terms for leases that have not yet commenced	15 years
Maximum | Office Space and Bank Branches
Lessee, Lease, Description [Line Items]
Term of operating lease contract	16 years

Leases - Net lease cost (Detail

Leases - Net lease cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Finance lease cost:
Amortization of ROU assets	$ 1,335	$ 1,108
Interest on lease liabilities	40	34
Operating lease cost	14,854	23,463
Short-term lease cost	37	19
Variable lease cost	7,168	5,122
Sublease income	0	(18)
Net lease cost	23,434	29,728
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	40	34
Operating cash flows from operating leases	17,203	21,910
Financing cash flows from finance leases	1,327	1,096
ROU assets obtained in exchange for new finance leases	0	3,714
ROU assets obtained in exchange for new operating leases	$ 18,741	$ 57,544

Leases - Other information (Det

Leases - Other information (Details)	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Weighted-average remaining lease term - finance leases, in years	1 year 2 months 12 days	2 years 2 months 12 days
Weighted-average remaining lease term - operating leases, in years	12 years 2 months 12 days	11 years 6 months
Weighted-average discount rate - finance leases	1.85%	1.74%
Weighted-average discount rate - operating leases	4.43%	4.16%

Leases - Maturity of remaining

Leases - Maturity of remaining lease liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Finance Leases
2024	$ 1,334
2025	237
2026	0
2027	0
2028	0
2028 and thereafter	0
Total lease payments	1,571
Less: Interest	(21)
Finance Lease, Liability	1,550	$ 2,877
Operating Leases
2024	13,622
2025	11,027
2026	11,591
2027	11,543
2028	10,708
2028 and thereafter	90,784
Total lease payments	149,275
Less: Interest	(39,752)
Present value of lease liabilities	109,523	$ 103,814
2024	14,956
2025	11,264
2026	11,591
2027	11,543
2028	10,708
2028 and thereafter	90,784
Total lease payments	150,846
Less: Interest	(39,773)
Present value of lease liabilities	$ 111,073

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Summary of premises and equipment
Premises and equipment, gross	$ 102,914	$ 89,511
Accumulated depreciation	(70,548)	(63,129)
Total premises and equipment, net	32,366	26,382
Depreciation, Depletion and Amortization
Depreciation expense	10,400	9,500	$ 8,100
Premises
Summary of premises and equipment
Premises and equipment, gross	39,547	34,930
Furniture and equipment
Summary of premises and equipment
Premises and equipment, gross	$ 63,367	$ 54,581

Deposits - Schedule of Deposits

Deposits - Schedule of Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Non-interest bearing deposits
Non-interest bearing deposits	$ 7,328,276	$ 9,618,081
Interest bearing deposits:
Transaction	2,264,055	683,562
Savings	11,000,783	11,042,658
Time	1,778,725	1,512,579
Total interest bearing deposits	15,043,563	13,238,799
Total deposits	$ 22,371,839	$ 22,856,880

Deposits - Schedule of Maturiti

Deposits - Schedule of Maturities of Interest-Bearing Time Deposits (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Scheduled maturities of interest bearing time deposits
2024	$ 1,752,837
2025	24,102
2026	1,075
2027	664
2028	47
2028 and after	0
Total	$ 1,778,725

Deposits - Narrative (Details)

Deposits - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Deposits [Abstract]
Interest-bearing time deposits of $250,000 or more	$ 376.4	$ 258.4

Short-Term Borrowings and Lon_3

Short-Term Borrowings and Long-Term Debt - Summary of Short-Term Borrowings (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Feb. 13, 2024
Schedule Of Borrowings [Line Items]
Total FHLB borrowing capacity	$ 6,339,707,000	$ 6,160,515,000
Unused federal funds lines available from commercial banks	1,188,000,000	1,479,000,000
Unused Federal Reserve borrowings capacity	4,094,801,000	3,574,762,000
Unused revolving line of credit	100,000,000	75,000,000
Borrowings	0	0
Subsequent Event
Schedule Of Borrowings [Line Items]
Unused revolving line of credit			$ 75,000,000
Federal Funds Purchased
Schedule Of Borrowings [Line Items]
Amount outstanding at year-end	$ 0	$ 0
Interest rate at year-end	0%	0%
Average balance outstanding during the year	$ 0	$ 30,741,000
Weighted-average interest rate during the year	0%	1.17%
Maximum month-end outstanding during the year	$ 0	$ 525,000,000
Customer repurchase agreements
Schedule Of Borrowings [Line Items]
Amount outstanding at year-end	$ 0	$ 1,142,000
Interest rate at year-end	0%	0.25%
Average balance outstanding during the year	$ 25,000	$ 1,928,000
Weighted-average interest rate during the year	0.39%	0.28%
Maximum month-end outstanding during the year	$ 0	$ 2,320,000
FHLB Borrowings
Schedule Of Borrowings [Line Items]
Amount outstanding at year-end	$ 1,500,000,000	$ 1,200,000,000
Interest rate at year-end	5.64%	4.25%
Average balance outstanding during the year	$ 1,323,014,000	$ 1,797,082,000
Weighted-average interest rate during the year	5.34%	1.60%
Maximum month-end outstanding during the year	$ 2,100,000,000	$ 2,650,000,000
Loans
Schedule Of Borrowings [Line Items]
Total FHLB borrowing capacity	2,602,092,000	2,621,218,000
Debt Securities
Schedule Of Borrowings [Line Items]
Total FHLB borrowing capacity	$ 3,737,615,000	$ 3,539,297,000

Short-Term Borrowings and Lon_4

Short-Term Borrowings and Long-Term Debt - Summary of Long-Term Borrowings (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	May 06, 2021	Jan. 31, 2014
Schedule Of Borrowings [Line Items]
Long-term debt		$ 859,147	$ 931,442
Repayments of long-term debt		75,000	0	$ 111,000
Senior Unsecured Credit-Linked Notes, Due 2024
Schedule Of Borrowings [Line Items]
Senior unsecured credit-linked notes		199,499	272,492
Repayments of long-term debt	$ 75,000
5.75% Subordinated Notes, Due 2026
Schedule Of Borrowings [Line Items]
Trust preferred securities issued		174,457	174,196
Interest rate						5.25%
4.00% Subordinated Notes, Due 2031
Schedule Of Borrowings [Line Items]
Trust preferred securities issued		371,785	371,348
Interest rate					4%
Floating Rate Subordinated Debentures, Due 2032 to 2036
Schedule Of Borrowings [Line Items]
Trust preferred securities issued		$ 113,406	$ 113,406

Short-Term Borrowings and Lon_5

Short-Term Borrowings and Long-Term Debt - Preferred Subordinated Debentures (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Texas Capital Statutory Trust I
Subordinated Borrowing [Line Items]
Trust preferred securities issued	$ 10,310
Texas Capital Statutory Trust I | Trust preferred subordinated debentures | Secured Overnight Financing Rate (SOFR)
Subordinated Borrowing [Line Items]
Interest rate on subordinated debentures	3.61%
Texas Capital Statutory Trust II
Subordinated Borrowing [Line Items]
Trust preferred securities issued	$ 10,310
Texas Capital Statutory Trust II | Trust preferred subordinated debentures | Secured Overnight Financing Rate (SOFR)
Subordinated Borrowing [Line Items]
Interest rate on subordinated debentures	3.51%
Texas Capital Statutory Trust III
Subordinated Borrowing [Line Items]
Trust preferred securities issued	$ 25,774
Texas Capital Statutory Trust III | Trust preferred subordinated debentures | Secured Overnight Financing Rate (SOFR)
Subordinated Borrowing [Line Items]
Interest rate on subordinated debentures	1.77%
Texas Capital Statutory Trust IV
Subordinated Borrowing [Line Items]
Trust preferred securities issued	$ 25,774
Texas Capital Statutory Trust IV | Trust preferred subordinated debentures | Secured Overnight Financing Rate (SOFR)
Subordinated Borrowing [Line Items]
Interest rate on subordinated debentures	1.86%
Texas Capital Statutory Trust V
Subordinated Borrowing [Line Items]
Trust preferred securities issued	$ 41,238
Texas Capital Statutory Trust V | Trust preferred subordinated debentures | Secured Overnight Financing Rate (SOFR)
Subordinated Borrowing [Line Items]
Interest rate on subordinated debentures	1.97%

Financial Instruments with Of_3

Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Allowance For Off-Balance Sheet Credit Losses [Roll Forward]
Beginning balance	$ 21,793	$ 17,265
Provision for credit losses	24,569	4,528
Ending balance	46,362	21,793
Commercial
Allowance For Off-Balance Sheet Credit Losses [Roll Forward]
Beginning balance	16,550	15,107
Provision for credit losses	19,490	1,443
Ending balance	36,040	16,550
Mortgage finance
Allowance For Off-Balance Sheet Credit Losses [Roll Forward]
Beginning balance	0	0
Provision for credit losses	6	0
Ending balance	6	0
Commercial real estate
Allowance For Off-Balance Sheet Credit Losses [Roll Forward]
Beginning balance	5,222	2,136
Provision for credit losses	4,925	3,086
Ending balance	10,147	5,222
Consumer
Allowance For Off-Balance Sheet Credit Losses [Roll Forward]
Beginning balance	21	22
Provision for credit losses	148	(1)
Ending balance	169	21
Commitments to extend credit
Allowance For Off-Balance Sheet Credit Losses [Roll Forward]
Off-balance sheet liability	9,749,085	9,673,082
Standby letters of credit
Allowance For Off-Balance Sheet Credit Losses [Roll Forward]
Off-balance sheet liability	$ 595,079	$ 417,896

Regulatory Ratios and Capital -

Regulatory Ratios and Capital - Narrative (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($)	Jan. 17, 2024 USD ($)	Jan. 18, 2023 USD ($)	Apr. 19, 2022 USD ($)	Dec. 31, 2009 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Shares repurchased	$ 105,024	$ 115,302
Assets	28,356,266	28,414,642				$ 15,000,000
Required reserve balance at the Federal Reserve	$ 0	$ 0
April 2022 Share Repurchase Program
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Authorized repurchase amount					$ 150,000
January 2023 Share Repurchase Program
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Authorized repurchase amount				$ 150,000
Shares repurchased (in shares) | shares	1,821,532
Shares repurchased	$ 105,000
Shares repurchased, price per share (in dollars per share) | $ / shares	$ 57.17
January 2024 Share Repurchase Program | Subsequent Event
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Authorized repurchase amount			$ 150,000
Basel III, Phased-In
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital (to average assets) to be well capitalized under prompt corrective action provisions, ratio	0.025

Regulatory Ratios and Capital_2

Regulatory Ratios and Capital - Schedule of Compliance With Regulatory Capital Requirements (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Common Equity Tier 1 [Abstract]
CET1, actual amount	$ 3,264,609	$ 3,180,208
Total capital (to risk-weighted assets):
Total capital (to risk weighted assets), actual amount	4,405,575	4,331,098
Total capital (to risk weighted assets) to be well capitalized under prompt corrective action provisions, amount	2,580,919	2,446,583
Tier 1 capital (to risk-weighted assets):
Tier 1 capital (to risk-weighted assets), actual amount	3,674,609	3,590,208
Tier 1 capital (to risk weighted assets) to be well capitalized under prompt corrective action provisions, amount	1,548,552	1,467,950
Tier 1 capital (to average assets):
Tier 1 capital (to average assets), actual amount	$ 3,674,609	$ 3,590,208
Risk Based Ratios [Abstract]
CET1, actual ratio	12.65%	13%
Total capital (to risk weighted assets), actual ratio	0.1707	0.1770
Total capital (to risk weighted assets) to be well capitalized under prompt corrective action provisions, ratio	0.1000	0.1000
Tier 1 capital (to risk-weighted assets), actual ratio	0.1424	0.1467
Tier 1 capital (to risk weighted assets) to be well capitalized under prompt corrective action provisions, ratio	0.0600	0.0600
Tier 1 capital (to average assets), actual ratio	0.1221	0.1154
Bank
Common Equity Tier 1 [Abstract]
CET1, actual amount	$ 3,599,919	$ 3,408,178
CET1 to be well capitalized under prompt corrective action provisions, amount	1,670,031	1,587,909
Total capital (to risk-weighted assets):
Total capital (to risk weighted assets), actual amount	3,959,100	3,987,720
Total capital (to risk weighted assets) to be well capitalized under prompt corrective action provisions, amount	2,569,278	2,442,937
Tier 1 capital (to risk-weighted assets):
Tier 1 capital (to risk-weighted assets), actual amount	3,599,919	3,568,178
Tier 1 capital (to risk weighted assets) to be well capitalized under prompt corrective action provisions, amount	2,055,422	1,954,349
Tier 1 capital (to average assets):
Tier 1 capital (to average assets), actual amount	3,599,919	3,568,178
Tier 1 capital (to average assets) to be well capitalized under prompt corrective action provisions, amount	$ 1,500,113	$ 1,554,039
Risk Based Ratios [Abstract]
CET1, actual ratio	14.01%	13.95%
CET1 to be well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%
Total capital (to risk weighted assets), actual ratio	0.1541	0.1632
Total capital (to risk weighted assets) to be well capitalized under prompt corrective action provisions, ratio	0.1000	0.1000
Tier 1 capital (to risk-weighted assets), actual ratio	0.1401	0.1461
Tier 1 capital (to risk weighted assets) to be well capitalized under prompt corrective action provisions, ratio	0.0800	0.0800
Tier 1 capital (to average assets), actual ratio	0.1200	0.1148
Tier 1 capital (to average assets) to be well capitalized under prompt corrective action provisions, ratio	0.0500	0.0500
Basel III, Phase-In Schedule
Common Equity Tier 1 [Abstract]
CET1 for capital adequacy purposes, amount	$ 1,806,644	$ 1,712,608
Total capital (to risk-weighted assets):
Total capital (to risk weighted assets) for capital adequacy purposes, amount	2,709,965	2,568,912
Tier 1 capital (to risk-weighted assets):
Tier 1 capital (to risk-weighted assets) for capital adequacy purposes, amount	2,193,781	2,079,595
Tier 1 capital (to average assets):
Tier 1 capital (to average assets) for capital adequacy purposes, amount	$ 1,204,192	$ 1,244,494
Risk Based Ratios [Abstract]
CET1 for capital adequacy purposes, ratio	7%	7%
Total capital (to risk weighted assets) for capital adequacy purposes, ratio	0.1050	0.1050
Tier 1 capital (to risk-weighted assets) for capital adequacy purposes, ratio	0.0850	0.0850
Tier 1 capital (to average assets) for capital adequacy purposes, ratio	0.0400	0.0400
Basel III, Phase-In Schedule | Bank
Common Equity Tier 1 [Abstract]
CET1 for capital adequacy purposes, amount	$ 1,798,495	$ 1,710,056
Total capital (to risk-weighted assets):
Total capital (to risk weighted assets) for capital adequacy purposes, amount	2,697,742	2,565,083
Tier 1 capital (to risk-weighted assets):
Tier 1 capital (to risk-weighted assets) for capital adequacy purposes, amount	2,183,886	2,076,496
Tier 1 capital (to average assets):
Tier 1 capital (to average assets) for capital adequacy purposes, amount	$ 1,200,091	$ 1,243,232
Risk Based Ratios [Abstract]
CET1 for capital adequacy purposes, ratio	7%	7%
Total capital (to risk weighted assets) for capital adequacy purposes, ratio	0.1050	0.1050
Tier 1 capital (to risk-weighted assets) for capital adequacy purposes, ratio	0.0850	0.0850
Tier 1 capital (to average assets) for capital adequacy purposes, ratio	0.0400	0.0400

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employer contribution	$ 15,200,000	$ 13,300,000	$ 10,200,000
Maximum percent of salary that can be contributed to deferred compensation plan	75%
Employer discretionary contributions	$ 0	0	274,000
Eligible employee contribution, minimum (in percent)	1%
Eligible employee contribution, maximum (in percent)	10%
Number of shares authorized under the plan	1,400,000
Number of shares available to be issued under the plan	861,366
Compensation expense	$ 0		1,000
Compensation cost for all share-based arrangements, net of taxes	$ 24,200,000	$ 21,200,000	$ 30,100,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Granted (in shares)	0	0	0
Cash based performance
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of cash-based performance units outstanding	0
Number of cash-based performance units issued in period	0	0
Cash-based compensation expense	$ 0	$ 186,000	$ 1,300,000
Stock appreciation rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	5 years
Compensation expense	$ 0	$ 0	$ 0
Minimum | Time-based RSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Minimum | Time and performance-based RSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Maximum | Time-based RSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	5 years
Maximum | Time and performance-based RSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	4 years
2006 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under the plan	400,000
Number of shares purchased under the plan	210,558	184,263	164,033

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Stock Appreciation Rights Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Additional Information:
Compensation expense	$ 0		$ 1,000
SARs
SARs
Outstanding at beginning of year (in shares)	0	3,000	12,400
Exercised (in shares)	0	(3,000)	(9,400)
Outstanding at year-end (in shares)	0	0	3,000
Weighted Average Exercise Price
SARs outstanding at beginning of year, weighted average exercise price	$ 0	$ 44.20	$ 43.48
SARs exercised, weighted average exercise price	0	44.20	43.24
SARs outstanding at year end, weighted average exercise price	$ 0	$ 0	$ 44.20
Additional Information:
Vested and exercisable at year-end	0	0	3,000
SARs vested and exercisable at year end, weighted average exercise price	$ 0	$ 0	$ 44.20
Weighted average remaining contractual life of vested (in years)	0 years	0 years	1 year 7 months 28 days
Weighted average remaining contractual life of SARs (in years)	0 years	0 years	1 year 7 months 28 days
Compensation expense	$ 0	$ 0	$ 0
Unrecognized compensation expense	0	0	0
Intrinsic value of exercised	$ 0	$ 64,000	$ 302,000

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Status and Changes in Nonvested Restricted Stock Units (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Weighted- Average Grant- Date Fair Value
Compensation expense	$ 0		$ 1
RSUs
Number of Shares
Outstanding at beginning of year (in shares)	1,155,652	1,206,862	955,594
Granted (in shares)	405,434	453,323	677,472
Vested (in shares)	(355,046)	(308,771)	(187,530)
Forfeited (in shares)	(124,361)	(195,762)	(238,674)
Outstanding at year-end (in shares)	1,081,679	1,155,652	1,206,862
Weighted- Average Grant- Date Fair Value
Balance at beginning of year, weighted average grant-date fair value	$ 61.12	$ 56.06	$ 48.76
Granted, weighted average grant-date fair value	68.63	68.15	66.31
Vested, weighted average grant-date fair value	50.79	54.51	58.82
Forfeited, weighted average grant-date fair value	66.98	58.42	53.76
Balance at year end, weighted average grant-date fair value	$ 66.91	$ 61.12	$ 56.06
Compensation expense	$ 24,200	$ 21,246	$ 30,060
Unrecognized compensation expense	$ 28,585	$ 32,148	$ 32,525
Weighted average period over which unrecognized compensation expense is expected to be recognized (in years)	1 year 10 months 20 days	2 years 3 months 21 days	2 years 9 months 14 days
Fair value of shares vested during the year	$ 18,117	$ 16,835	$ 11,030
Intrinsic value of shares vested during the year	$ 20,125	$ 18,640	$ 12,870

Income Taxes - Income Tax Expen

Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current:
Federal	$ 69,350	$ 109,370	$ 97,608
State	5,888	7,302	6,761
Total	75,238	116,672	104,369
Deferred:
Federal	(16,540)	(16,178)	(19,020)
State	(1,244)	(1,217)	(1,233)
Total	(17,784)	(17,395)	(20,253)
Total expense:
Federal	52,810	93,192	78,588
State	4,644	6,085	5,528
Income tax expense	$ 57,454	$ 99,277	$ 84,116

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amount
U.S. statutory rate	$ 51,785	$ 90,669	$ 70,992
State taxes	2,938	6,822	4,108
Tax-exempt income	(350)	(1,061)	(1,855)
Tax credits	(855)	(128)	(179)
Disallowed FDIC	1,863	1,491	2,936
Disallowed compensation	1,176	2,771	6,377
Other	897	(1,287)	1,737
Income tax expense	$ 57,454	$ 99,277	$ 84,116
Rate
U.S. statutory rate	21%	21%	21%
State taxes	1%	2%	1%
Tax-exempt income	0%	0%	(1.00%)
Tax credits	0%	0%	0%
Disallowed FDIC	1%	0%	1%
Disallowed compensation	0%	1%	2%
Other	0%	(1.00%)	1%
Total	23%	23%	25%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Unrecognized tax benefits	$ 1,000	$ 889	$ 722
Allowance for credit losses	$ 66,913	$ 62,154

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Asset (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Allowance for credit losses	$ 66,913	$ 62,154
Lease liabilities	25,080	24,091
Loan origination fees	14,928	14,385
Stock compensation	6,216	5,031
Non-accrual interest	1,672	1,132
Non-qualified deferred compensation	4,603	4,782
Net unrealized losses in AOCI	96,229	111,365
Other	15,079	4,678
Total deferred tax assets	230,720	227,618
Deferred tax liabilities:
Loan origination costs	(1,551)	(3,217)
Leases	(9,741)	(12,863)
Lease ROU assets	(21,225)	(19,807)
Depreciation	(12,414)	(9,034)
Other	(728)	(284)
Total deferred tax liabilities	(45,659)	(45,205)
Net deferred tax asset	$ 185,061	$ 182,413

Fair Value Disclosures - Schedu

Fair Value Disclosures - Schedule of Assets and Liabilities Measured At Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	$ 3,225,892	$ 2,615,644
Equity securities	51,825	33,956
Derivative assets	32,944	13,504
Derivative liabilities	70,917	91,758
U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	636,473	670,582
U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	106,592	102,154
CRT securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	11,995	11,861
Fair value measurements, recurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	40,661	22,879
Mortgage loans held for sale	0
Loans held for investment	0
Derivative assets	0	0
Securities sold not yet purchased	10,602
Derivative liabilities	0	0
Non-qualified deferred compensation plan liabilities	20,387	21,177
Fair value measurements, recurring basis | Level 1 | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	636,473	670,582
Fair value measurements, recurring basis | Level 1 | U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	0	0
Fair value measurements, recurring basis | Level 1 | Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	0	0
Fair value measurements, recurring basis | Level 1 | CRT securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	0	0
Fair value measurements, recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	11,164	11,077
Mortgage loans held for sale	706
Loans held for investment	0
Derivative assets	32,944	13,504
Securities sold not yet purchased	0
Derivative liabilities	70,917	91,758
Non-qualified deferred compensation plan liabilities	0	0
Fair value measurements, recurring basis | Level 2 | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	0	0
Fair value measurements, recurring basis | Level 2 | U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	106,592	102,154
Fair value measurements, recurring basis | Level 2 | Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	2,470,832	1,831,047
Fair value measurements, recurring basis | Level 2 | CRT securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	0	0
Fair value measurements, recurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Mortgage loans held for sale	0
Loans held for investment	38,341
Derivative assets	0	0
Securities sold not yet purchased	0
Derivative liabilities	0	0
Non-qualified deferred compensation plan liabilities	0	0
Fair value measurements, recurring basis | Level 3 | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	0	0
Fair value measurements, recurring basis | Level 3 | U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	0	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]
Available-for-sale debt securities	0	0
Fair value measurements, recurring basis | Level 3 | CRT securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	$ 11,995	$ 11,861

Fair Value Disclosures - Level

Fair Value Disclosures - Level 3 Fair Value Assets Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period	$ 0	$ 7,658
Purchases / Additions		1,569
Sales / Reductions		(8,132)
Realized		(1,095)
Unrealized		0
Balance at End of Period		$ 0
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income, Other	Noninterest Income, Other
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income, Other	Noninterest Income, Other
CRT securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period	$ 11,861	$ 11,846
Purchases / Additions	0	0
Sales / Reductions	(1,077)	0
Realized	0	0
Unrealized	1,211	15
Balance at End of Period	$ 11,995	$ 11,861
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]	Accumulated other comprehensive loss, net of taxes	Accumulated other comprehensive loss, net of taxes
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income, Other	Noninterest Income, Other
Tax-exempt asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period	$ 0	$ 180,033
Purchases / Additions		0
Sales / Reductions		(170,626)
Realized		0
Unrealized		(9,407)
Balance at End of Period		$ 0
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]	Accumulated other comprehensive loss, net of taxes	Accumulated other comprehensive loss, net of taxes
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income, Other	Noninterest Income, Other

Fair Value Disclosures - Narrat

Fair Value Disclosures - Narrative (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Nonrecurring
Fair Value Assets Measured On Non Recurring Basis Unobservable Input Reconciliation [Line Items]
Loans held for investment, net	$ 38,300	$ 0
Impaired loans, carrying value	58,300
Allowance allocations	$ 20,000
CRT securities | Minimum
Fair Value Assets Measured On Non Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt securities, available-for-sale, term	5 years 1 month 28 days
CRT securities | Maximum
Fair Value Assets Measured On Non Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt securities, available-for-sale, term	7 years 8 months 1 day
Measurement Input, Discount Rate | CRT securities | Minimum
Fair Value Assets Measured On Non Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt securities, available-for-sale, measurement input	0.0555
Measurement Input, Discount Rate | CRT securities | Maximum
Fair Value Assets Measured On Non Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt securities, available-for-sale, measurement input	0.0840
Measurement Input, Discount Rate | CRT securities | Weighted Average
Fair Value Assets Measured On Non Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt securities, available-for-sale, measurement input	0.0657	0.0824
Debt securities, available-for-sale, term	6 years 21 days	6 years 3 months 3 days

Fair Value Disclosures - Summar

Fair Value Disclosures - Summary of the Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale debt securities	$ 3,225,892	$ 2,615,644
Held-to-maturity debt securities	865,477	935,514
Equity securities	51,825	33,956
Derivative assets	32,944	13,504
Long-term debt	859,147	931,442
Derivative liabilities	70,917	91,758
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	3,242,850	5,012,260
Available-for-sale debt securities	3,225,892	2,615,644
Held-to-maturity debt securities	865,477	935,514
Equity securities	51,825	33,956
Loans held for sale	44,105	36,357
Loans held for investment, net	20,090,585	19,033,871
Derivative assets	32,944	13,504
Total deposits	22,371,839	22,856,880
Short-term borrowings	1,500,000	1,201,142
Long-term debt	859,147	931,442
Securities sold not yet purchased	10,602
Derivative liabilities	70,917	91,758
Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	3,242,850	5,012,260
Available-for-sale debt securities	3,225,892	2,615,644
Held-to-maturity debt securities	763,844	816,914
Equity securities	51,825	33,956
Loans held for sale	44,105	36,357
Loans held for investment, net	20,050,974	18,969,922
Derivative assets	32,944	13,504
Total deposits	22,379,452	22,857,949
Short-term borrowings	1,500,000	1,201,142
Long-term debt	801,309	881,716
Securities sold not yet purchased	10,602
Derivative liabilities	70,917	91,758
Level 1 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	3,242,850	5,012,260
Available-for-sale debt securities	636,473	670,582
Held-to-maturity debt securities	0	0
Equity securities	40,661	22,879
Loans held for sale	15,000	0
Loans held for investment, net	0	0
Derivative assets	0	0
Total deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Securities sold not yet purchased	10,602
Derivative liabilities	0	0
Level 2 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Available-for-sale debt securities	2,577,424	1,933,201
Held-to-maturity debt securities	763,844	816,914
Equity securities	11,164	11,077
Loans held for sale	29,105	0
Loans held for investment, net	0	0
Derivative assets	32,944	13,504
Total deposits	0	0
Short-term borrowings	1,500,000	1,201,142
Long-term debt	801,309	881,716
Securities sold not yet purchased	0
Derivative liabilities	70,917	91,758
Level 3 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Available-for-sale debt securities	11,995	11,861
Held-to-maturity debt securities	0	0
Equity securities	0	0
Loans held for sale	0	36,357
Loans held for investment, net	20,050,974	18,969,922
Derivative assets	0	0
Total deposits	22,379,452	22,857,949
Short-term borrowings	0	0
Long-term debt	0	0
Securities sold not yet purchased	0
Derivative liabilities	$ 0	$ 0

Derivative Financial Instrume_3

Derivative Financial Instruments - Schedule of Derivative Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Estimated fair value, asset derivative	$ 108,972	$ 90,543
Estimated fair value, liability derivative	170,307	176,543
Offsetting derivative liabilities	(37,346)	(5,164)
Offsetting derivative assets	(37,346)	(5,164)
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset	(38,682)	(71,875)
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset	(62,044)	(79,621)
Net asset derivatives included in the consolidated balance sheets	32,944	13,504
Net liability derivatives included in the consolidated balance sheets	$ 70,917	$ 91,758
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Derivatives designated as hedges | Swaps | Cash Flow Hedging
Derivative [Line Items]
Residential MSRs, notional amount	$ 2,850,000	$ 3,000,000
Estimated fair value, asset derivative	668	0
Estimated fair value, liability derivative	57,961	86,378
Non-hedging derivatives | Swaps | Customer-Initiated and Other Derivatives
Derivative [Line Items]
Residential MSRs, notional amount	5,673,822	4,396,367
Estimated fair value, asset derivative	65,247	83,529
Estimated fair value, liability derivative	69,863	83,529
Non-hedging derivatives | Foreign currency forward contracts | Customer-Initiated and Other Derivatives
Derivative [Line Items]
Residential MSRs, notional amount	4,824	0
Estimated fair value, asset derivative	52	0
Estimated fair value, liability derivative	31	0
Non-hedging derivatives | Caps and floors written | Customer-Initiated and Other Derivatives
Derivative [Line Items]
Residential MSRs, notional amount	637,971	220,142
Estimated fair value, asset derivative	1,654	0
Estimated fair value, liability derivative	2,228	2,583
Non-hedging derivatives | Caps and floors purchased | Customer-Initiated and Other Derivatives
Derivative [Line Items]
Residential MSRs, notional amount	637,971	220,142
Estimated fair value, asset derivative	2,228	2,583
Estimated fair value, liability derivative	1,654	0
Non-hedging derivatives | Forward contracts | Customer-Initiated and Other Derivatives
Derivative [Line Items]
Residential MSRs, notional amount	8,665,675	1,569,326
Estimated fair value, asset derivative	39,123	4,431
Estimated fair value, liability derivative	$ 38,570	$ 4,053

Derivative Financial Instrume_4

Derivative Financial Instruments Derivative Financial Instruments - Narrative (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) instrument	Dec. 31, 2022 USD ($) instrument
Derivative [Line Items]
Cash collateral pledged for derivatives	$ 119,000,000	$ 89,200,000
CashCollateralPostedForDerivativesInLiabilityPosition	$ 42,300,000	$ 72,500,000
Risk participation agreement - participant bank
Derivative [Line Items]
Instruments held | instrument	14	19
Non-hedging derivatives, notional amoount	$ 230,700,000	$ 291,200,000
Maximum exposure	$ 4,500,000	$ 8,900,000
Risk participation agreement - lead bank
Derivative [Line Items]
Instruments held | instrument	15	18
Non-hedging derivatives, notional amoount	$ 204,800,000	$ 222,000,000
Interest rate contract
Derivative [Line Items]
Unrealized losses, net of tax to AOCI	34,800,000
Amount reclassified from AOCI into interest income on loans	60,900,000
Amount reclassified from AOCI as a decrease to interest income	$ 53,100,000
Maximum period to hedge forecasted transactions	2 years 2 months 1 day
Loans Receivable | Not Designated as Hedging Instrument
Derivative [Line Items]
Credit risk exposure, net of collateral pledged, relating to derivatives	$ 32,900,000	$ 13,500,000

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 3,055,351	$ 3,209,616	$ 2,871,224
Change in unrealized gain/(loss)	3,834	(479,814)	(80,366)
Amounts reclassified into net income	68,241	9,905	0
Other comprehensive income/(loss)	72,075	(469,909)	(80,366)
Income tax expense/(benefit)	15,136	(98,681)	(16,877)
Other comprehensive income/(loss), net of tax	56,939	(371,228)	(63,489)
Ending balance	3,199,142	3,055,351	3,209,616
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(66,394)	0
Change in unrealized gain/(loss)	(34,778)	(85,846)
Amounts reclassified into net income	60,911	1,803
Other comprehensive income/(loss)	26,133	(84,043)
Income tax expense/(benefit)	5,488	(17,649)
Other comprehensive income/(loss), net of tax	20,645	(66,394)
Ending balance	(45,749)	(66,394)	0
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(304,309)	(47,715)
Change in unrealized gain/(loss)	38,612	(324,803)
Amounts reclassified into net income	0	0
Other comprehensive income/(loss)	38,612	(324,803)
Income tax expense/(benefit)	8,109	(68,209)
Other comprehensive income/(loss), net of tax	30,503	(256,594)
Ending balance	(273,806)	(304,309)	(47,715)
AOCI, Accumulated Gain (Loss), Debt Securities, Held-to-Maturity, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(48,240)	0
Change in unrealized gain/(loss)	0	(69,165)
Amounts reclassified into net income	7,330	8,102
Other comprehensive income/(loss)	7,330	(61,063)
Income tax expense/(benefit)	1,539	(12,823)
Other comprehensive income/(loss), net of tax	5,791	(48,240)
Ending balance	(42,449)	(48,240)	0
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(418,943)	(47,715)	15,774
Ending balance	$ (362,004)	$ (418,943)	$ (47,715)

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Related Party Transactions [Abstract]
Deposits from related parties	$ 35.8	$ 23.1

Parent Company Only - Balance S

Parent Company Only - Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2009
Assets
Investment securities	$ 4,143,194	$ 3,585,114
Other assets	801,670	719,162
Total assets	28,356,266	28,414,642			$ 15,000,000
Liabilities:
Long-term debt	859,147	931,442
Total liabilities	25,157,124	25,359,291
Stockholders’ Equity:
Preferred stock	300,000	300,000
Common stock	511	509
Additional paid-in capital	1,045,576	1,025,593
Retained earnings	2,435,393	2,263,502
Treasury stock	(220,334)	(115,310)
Accumulated other comprehensive income/(loss)	(362,004)	(418,943)
Total stockholders’ equity	3,199,142	3,055,351	$ 3,209,616	$ 2,871,224
Total liabilities and stockholders’ equity	28,356,266	28,414,642
Texas Capital Bancshares, Inc.
Assets
Cash and cash equivalents	301,672	245,777
Investment securities	18,845	0
Investment in subsidiaries	3,306,095	3,183,767
Other assets	55,949	93,395
Total assets	3,682,561	3,522,939
Liabilities:
Other liabilities	23,695	6,754
Long-term debt	485,191	484,754
Total liabilities	508,886	491,508
Stockholders’ Equity:
Preferred stock	300,000	300,000
Common stock	511	509
Additional paid-in capital	1,045,576	1,025,593
Retained earnings	2,409,926	2,239,582
Treasury stock	(220,334)	(115,310)
Accumulated other comprehensive income/(loss)	(362,004)	(418,943)
Total stockholders’ equity	3,173,675	3,031,431
Total liabilities and stockholders’ equity	$ 3,682,561	$ 3,522,939

Parent Company Only - Statement

Parent Company Only - Statement of Earnings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Earnings
Interest on notes receivable	$ 1,300,653	$ 983,794	$ 820,476
Interest expense	715,800	268,479	107,748
Salaries and benefits	459,700	434,906	350,197
Legal and professional	64,924	75,858	41,152
Other non-interest expense	49,938	56,561	40,448
Income tax benefit	(57,454)	(99,277)	(84,116)
Net income	189,141	332,478	253,939
Preferred stock dividends	17,250	17,250	18,721
Net income available to common stockholders	171,891	315,228	235,218
Texas Capital Bancshares, Inc.
Statement of Earnings
Interest on notes receivable	2,167	3,250	3,404
Dividend income	7,671	10,529	10,472
Other income	(94)	9	5
Total income	9,744	13,788	13,881
Interest expense	23,714	19,721	15,946
Salaries and benefits	835	782	720
Legal and professional	1,504	1,583	1,803
Other non-interest expense	1,823	1,636	4,375
Total expense	27,876	23,722	22,844
Loss before income taxes and equity in undistributed income of subsidiary	(18,132)	(9,934)	(8,963)
Income tax benefit	4,537	2,282	2,179
Income before income taxes	(13,595)	(7,652)	(6,784)
Equity in undistributed income of subsidiary	201,189	337,946	258,539
Net income	187,594	330,294	251,755
Preferred stock dividends	17,250	17,250	18,721
Net income available to common stockholders	$ 170,344	$ 313,044	$ 233,034

Parent Company Only - Stateme_2

Parent Company Only - Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities
Net income	$ 189,141	$ 332,478	$ 253,939
Adjustments to reconcile net income to net cash provided by/(used in) operating activities:
Accrued interest receivable and other assets	(78,606)	(25,482)	154,114
Accrued interest payable and other liabilities	29,134	2,518	(70,154)
Net cash provided by operating activities	373,740	147,970	657,315
Investing Activities
Sales/(purchases) of equity securities, net	(14,298)	11,651	0
Net cash provided by/(used in) investing activities	(1,755,478)	3,308,567	1,232,786
Financing Activities
Net proceeds from issuance of preferred stock	0	0	289,723
Redemption of preferred stock	0	0	(150,000)
Preferred stock dividends paid	(17,250)	(17,250)	(18,721)
Repurchase of common stock	(105,024)	(115,302)	0
Redemption of long-term debt	(75,000)	0	(111,000)
Excess tax benefits from stock-based compensation arrangements	0	0	639,440
Net cash used in financing activities	(387,672)	(6,390,936)	(3,149,822)
Net increase/(decrease) in cash and cash equivalents	(1,769,410)	(2,934,399)	(1,259,721)
Cash and cash equivalents at beginning of period	5,012,260	7,946,659	9,206,380
Cash and cash equivalents at end of period	3,242,850	5,012,260	7,946,659
Texas Capital Bancshares, Inc.
Operating activities
Net income	187,594	330,294	251,755
Adjustments to reconcile net income to net cash provided by/(used in) operating activities:
Equity in undistributed income of subsidiary	(201,189)	(337,946)	(258,539)
Amortization expense	437	438	2,469
Accrued interest receivable and other assets	36,938	(2,095)	(1,750)
Accrued interest payable and other liabilities	16,941	3,086	2,348
Net cash provided by operating activities	40,721	(6,223)	(3,717)
Investing Activities
Sales/(purchases) of equity securities, net	(18,337)	0	0
Net decrease in loans held for investment	0	0	7,500
Repayments of investments in/(advances to) subsidiaries	160,000	(50,000)	0
Net cash provided by/(used in) investing activities	141,663	(50,000)	7,500
Financing Activities
Issuance of stock related to stock-based awards	(4,215)	(4,209)	(3,121)
Net proceeds from issuance of preferred stock	0	0	289,723
Redemption of preferred stock	0	0	(150,000)
Preferred stock dividends paid	(17,250)	(17,250)	(18,721)
Repurchase of common stock	(105,024)	(115,302)	0
Redemption of long-term debt	0	0	(111,000)
Excess tax benefits from stock-based compensation arrangements	0	0	370,625
Net cash used in financing activities	(126,489)	(136,761)	377,506
Net increase/(decrease) in cash and cash equivalents	55,895	(192,984)	381,289
Cash and cash equivalents at beginning of period	245,777	438,761	57,472
Cash and cash equivalents at end of period	$ 301,672	$ 245,777	$ 438,761