$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

$tcbi Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000107742822000012 Filed on February 09, 2022

Income Statement

Concept	2021 Q4	2021 Q3	2021
Revenue	$219.9M	$216.6M	$876.6M
YoY Change	-10.38%	-10.34%	-15.66%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development		$28.37M	$75.19M
YoY Change		-8.76%	-27.04%
% of Gross Profit
Depreciation & Amortization	$27.50M	$18.40M	$93.41M
YoY Change	18.53%	-9.8%	24.67%
% of Gross Profit
Operating Expenses		$28.37M	$75.19M
YoY Change		-8.76%	-27.04%
Operating Profit
YoY Change
Interest Expense	$25.86M	$26.05M	$107.7M
YoY Change	-19.57%	-27.95%	-42.71%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$88.84M	$57.33M	$338.1M
YoY Change	7.03%	-20.57%	267.67%
Income Tax	$23.71M	$13.94M	$84.12M
% Of Pretax Income	26.69%	24.31%	24.88%
Net Earnings	$65.13M	$43.39M	$253.9M
YoY Change	8.23%	-24.03%	283.08%
Net Earnings / Revenue	29.62%	20.03%	28.97%
Basic Earnings Per Share	$1.20	$0.76	$4.65
Diluted Earnings Per Share	$1.19	$0.76	$4.60
COMMON SHARES
Basic Shares Outstanding	50.61M shares	50.60M shares	50.58M shares
Diluted Shares Outstanding		51.14M shares	51.14M shares

Balance Sheet

Concept	2021 Q4	2021 Q3	2021
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$7.947B	$8.535B
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$20.90M	$21.12M	$76.00M
YoY Change	-14.85%	-20.76%	-17.39%
Goodwill	$15.09M
YoY Change	0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets			$66.00M
YoY Change			127.59%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$34.73B	$36.40B	$34.73B
YoY Change	-7.94%	-5.28%	-7.94%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$8.000M	$9.000M	$8.000M
YoY Change	-27.27%	-40.0%	-27.27%
Accrued Expenses	$69.00M		$69.00M
YoY Change			-16.87%
Deferred Revenue
YoY Change
Short-Term Debt	$3.000M	$3.000M	$3.000M
YoY Change	-97.32%	-98.56%	-97.32%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$77.00M	$9.000M	$77.00M
YoY Change	600.0%	-40.0%	-18.09%
LONG-TERM LIABILITIES
Long-Term Debt	$929.0M	$928.0M	$929.0M
YoY Change	134.6%	134.34%	134.6%
Other Long-Term Liabilities	$204.0M	$302.0M	$204.0M
YoY Change	-39.82%	-14.69%	-20.62%
Total Long-Term Liabilities	$1.133B	$1.230B	$1.133B
YoY Change	54.15%	64.0%	73.51%
TOTAL LIABILITIES
Total Short-Term Liabilities	$77.00M	$9.000M	$77.00M
Total Long-Term Liabilities	$1.133B	$1.230B	$1.133B
Total Liabilities	$31.52B	$33.26B	$31.52B
YoY Change	-9.56%	-6.67%	-9.56%
SHAREHOLDERS EQUITY
Retained Earnings	$1.948B	$1.887B
YoY Change	13.73%	14.02%
Common Stock	$506.0K	$506.0K
YoY Change	0.4%	0.4%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$8.000K	$8.000K
YoY Change	0.0%	0.0%
Treasury Stock Shares	417.0 shares	417.0 shares
Shareholders Equity	$3.210B	$3.148B	$3.210B
YoY Change
Total Liabilities & Shareholders Equity	$34.73B	$36.40B	$34.73B
YoY Change	-7.94%	-5.28%	-7.94%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2021
OPERATING ACTIVITIES
Net Income	$65.13M	$43.39M	$253.9M
YoY Change	8.23%	-24.03%	283.08%
Depreciation, Depletion And Amortization	$27.50M	$18.40M	$93.41M
YoY Change	18.53%	-9.8%	24.67%
Cash From Operating Activities	$111.0M	$107.7M	$657.3M
YoY Change	-76.39%	-229.76%	-75.1%
INVESTING ACTIVITIES
Capital Expenditures	-$1.500M	-$1.100M	$4.127M
YoY Change	1400.0%	175.0%	47.6%
Acquisitions
YoY Change
Other Investing Activities	$1.011B	$298.8M	$1.237B
YoY Change	-188.06%	-138.91%	-142.18%
Cash From Investing Activities	$1.010B	$297.7M	$1.233B
YoY Change	-187.92%	-138.74%	-142.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net			$111.0M
YoY Change
Cash From Financing Activities	-1.709B	1.158B	-$3.150B
YoY Change	124.29%	-34.97%	-162.05%
NET CHANGE
Cash From Operating Activities	111.0M	107.7M	$657.3M
Cash From Investing Activities	1.010B	297.7M	$1.233B
Cash From Financing Activities	-1.709B	1.158B	-$3.150B
Net Change In Cash	-588.3M	1.564B	-$1.260B
YoY Change	-59.16%	68.13%	-126.35%
FREE CASH FLOW
Cash From Operating Activities	$111.0M	$107.7M	$657.3M
Capital Expenditures	-$1.500M	-$1.100M	$4.127M
Free Cash Flow	$112.5M	$108.8M	$653.2M
YoY Change	-76.07%	-231.72%	-75.23%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Registrant Name EntityRegistrantName	TEXAS CAPITAL BANCSHARES INC/TX
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001077428
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssets
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssets
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssets
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssets
CY2020Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2021Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2021Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2020Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-34657
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	75-2679109
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	2000 McKinney Avenue
CY2021	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 700
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Dallas
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
CY2021	dei	Entity Address Country EntityAddressCountry	US
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	75201
CY2021	dei	City Area Code CityAreaCode	214
CY2021	dei	Local Phone Number LocalPhoneNumber	932-6600
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	3191480000	USD
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	50626134	shares
CY2021	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2021	dei	Auditor Location AuditorLocation	Dallas, TX
CY2021	dei	Auditor Firm AuditorFirmId	42
CY2021Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	180663000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	173573000	USD
CY2021Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	7765996000	USD
CY2020Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	9032807000	USD
CY2021Q4	us-gaap	Investments Investments	3583808000	USD
CY2020Q4	us-gaap	Investments Investments	3196970000	USD
CY2021Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	8100000	USD
CY2020Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	239100000	USD
CY2021Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	8123000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	283165000	USD
CY2021Q4	tcbi	Mortgage Finance MortgageFinance	7475497000	USD
CY2020Q4	tcbi	Mortgage Finance MortgageFinance	9079409000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	15331457000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	15351451000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	211866000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	254615000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	22595088000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	24176245000	USD
CY2021Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	0	USD
CY2020Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	105424000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	20901000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	24546000	USD
CY2021Q4	us-gaap	Other Assets OtherAssets	559897000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	715699000	USD
CY2021Q4	tcbi	Goodwill And Intangible Assets Net GoodwillAndIntangibleAssetsNet	17262000	USD
CY2020Q4	tcbi	Goodwill And Intangible Assets Net GoodwillAndIntangibleAssetsNet	17667000	USD
CY2021Q4	us-gaap	Assets Assets	34731738000	USD
CY2020Q4	us-gaap	Assets Assets	37726096000	USD
CY2021Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	13390370000	USD
CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	12740947000	USD
CY2021Q4	us-gaap	Interest Bearing Deposit Liabilities Domestic InterestBearingDepositLiabilitiesDomestic	14718995000	USD
CY2020Q4	us-gaap	Interest Bearing Deposit Liabilities Domestic InterestBearingDepositLiabilitiesDomestic	18255642000	USD
CY2021Q4	us-gaap	Other Liabilities OtherLiabilities	273488000	USD
CY2021Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	2832000	USD
CY2021Q4	us-gaap	Deposits Deposits	28109365000	USD
CY2020Q4	us-gaap	Other Liabilities OtherLiabilities	339486000	USD
CY2020Q4	us-gaap	Deposits Deposits	30996589000	USD
CY2021Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	7699000	USD
CY2020Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	11150000	USD
CY2020Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	111751000	USD
CY2021Q4	us-gaap	Other Borrowings OtherBorrowings	2200000000	USD
CY2020Q4	us-gaap	Other Borrowings OtherBorrowings	3000000000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	928738000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	395896000	USD
CY2021Q4	us-gaap	Liabilities Liabilities	31522122000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	34854872000	USD
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Preferred Stock Liquidation Preference Value PreferredStockLiquidationPreferenceValue	1000	USD
CY2020Q4	us-gaap	Preferred Stock Liquidation Preference Value PreferredStockLiquidationPreferenceValue	1000	USD
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	300000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	6000000	shares
CY2021Q4	us-gaap	Preferred Stock Value PreferredStockValue	300000000	USD
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	150000000	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50618911	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50470867	shares
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	506000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	504000	USD
CY2021Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1008559000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	991898000	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1948274000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1713056000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	15774000	USD
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	417	shares
CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	417	shares
CY2021Q4	us-gaap	Treasury Stock Value TreasuryStockValue	8000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	8000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-47715000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	3209616000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	2871224000	USD
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	34731738000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	37726096000	USD
CY2021	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	820532000	USD
CY2020	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	993670000	USD
CY2019	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	1273547000	USD
CY2021	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	42820000	USD
CY2020	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	17475000	USD
CY2019	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	8654000	USD
CY2021	us-gaap	Interest Income Federal Funds Sold InterestIncomeFederalFundsSold	1000	USD
CY2020	us-gaap	Interest Income Federal Funds Sold InterestIncomeFederalFundsSold	693000	USD
CY2019	us-gaap	Interest Income Federal Funds Sold InterestIncomeFederalFundsSold	1529000	USD
CY2021	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	13232000	USD
CY2020	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	27569000	USD
CY2019	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	71093000	USD
CY2021	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	876585000	USD
CY2020	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1039407000	USD
CY2019	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1354823000	USD
CY2021	us-gaap	Interest Expense Deposits InterestExpenseDeposits	65507000	USD
CY2020	us-gaap	Interest Expense Deposits InterestExpenseDeposits	146117000	USD
CY2019	us-gaap	Interest Expense Deposits InterestExpenseDeposits	293537000	USD
CY2021	us-gaap	Interest Expense Federal Funds Purchased InterestExpenseFederalFundsPurchased	131000	USD
CY2020	us-gaap	Interest Expense Federal Funds Purchased InterestExpenseFederalFundsPurchased	1083000	USD
CY2019	us-gaap	Interest Expense Federal Funds Purchased InterestExpenseFederalFundsPurchased	11872000	USD
CY2021	us-gaap	Interest Expense Other InterestExpenseOther	4482000	USD
CY2020	us-gaap	Interest Expense Other InterestExpenseOther	20923000	USD
CY2019	us-gaap	Interest Expense Other InterestExpenseOther	58393000	USD
CY2021	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	37628000	USD
CY2020	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	19963000	USD
CY2019	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	21790000	USD
CY2021	us-gaap	Interest Expense InterestExpense	107748000	USD
CY2020	us-gaap	Interest Expense InterestExpense	188086000	USD
CY2019	us-gaap	Interest Expense InterestExpense	385592000	USD
CY2021	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	768837000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	851321000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	969231000	USD
CY2021	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-30000000	USD
CY2020	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	258000000	USD
CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	75000000	USD
CY2021	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	798837000	USD
CY2020	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	593321000	USD
CY2020	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	23581000	USD
CY2019	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	894231000	USD
CY2021	tcbi	Fees And Commissions Service Charges On Depositor Accounts FeesAndCommissionsServiceChargesOnDepositorAccounts	18674000	USD
CY2020	tcbi	Fees And Commissions Service Charges On Depositor Accounts FeesAndCommissionsServiceChargesOnDepositorAccounts	11620000	USD
CY2019	tcbi	Fees And Commissions Service Charges On Depositor Accounts FeesAndCommissionsServiceChargesOnDepositorAccounts	11320000	USD
CY2021	tcbi	Wealth Management And Trust Fee Income WealthManagementAndTrustFeeIncome	13173000	USD
CY2020	tcbi	Wealth Management And Trust Fee Income WealthManagementAndTrustFeeIncome	9998000	USD
CY2019	tcbi	Wealth Management And Trust Fee Income WealthManagementAndTrustFeeIncome	8810000	USD
CY2021	tcbi	Mortgage And Premium Finance Loan Fees MortgageAndPremiumFinanceLoanFees	27954000	USD
CY2020	tcbi	Mortgage And Premium Finance Loan Fees MortgageAndPremiumFinanceLoanFees	46423000	USD
CY2019	tcbi	Mortgage And Premium Finance Loan Fees MortgageAndPremiumFinanceLoanFees	29738000	USD
CY2021	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	15513000	USD
CY2020	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	27029000	USD
CY2019	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	13439000	USD
CY2021	tcbi	Fees And Commissions Investment Banking Income FeesAndCommissionsInvestmentBankingIncome	24441000	USD
CY2020	tcbi	Fees And Commissions Investment Banking Income FeesAndCommissionsInvestmentBankingIncome	22687000	USD
CY2019	tcbi	Fees And Commissions Investment Banking Income FeesAndCommissionsInvestmentBankingIncome	14876000	USD
CY2021	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1317000	USD
CY2020	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	58026000	USD
CY2019	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	-20259000	USD
CY2021	us-gaap	Noninterest Income Other NoninterestIncomeOther	37158000	USD
CY2020	us-gaap	Noninterest Income Other NoninterestIncomeOther	27198000	USD
CY2019	us-gaap	Noninterest Income Other NoninterestIncomeOther	44444000	USD
CY2021	us-gaap	Noninterest Income NoninterestIncome	138230000	USD
CY2020	us-gaap	Noninterest Income NoninterestIncome	202981000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	102368000	USD
CY2021	us-gaap	Labor And Related Expense LaborAndRelatedExpense	350930000	USD
CY2020	us-gaap	Labor And Related Expense LaborAndRelatedExpense	340529000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	328483000	USD
CY2021	us-gaap	Occupancy Net OccupancyNet	33232000	USD
CY2020	us-gaap	Occupancy Net OccupancyNet	34955000	USD
CY2019	us-gaap	Occupancy Net OccupancyNet	32989000	USD
CY2021	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	10006000	USD
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	39715000	USD
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	41809000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	44701000	USD
CY2019	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	53355000	USD
CY2021	us-gaap	Professional Fees ProfessionalFees	41152000	USD
CY2020	us-gaap	Professional Fees ProfessionalFees	52132000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	52460000	USD
CY2021	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	75185000	USD
CY2020	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	103054000	USD
CY2019	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	44826000	USD
CY2021	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	21027000	USD
CY2020	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	25955000	USD
CY2019	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	20093000	USD
CY2021	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	27765000	USD
CY2020	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	64585000	USD
CY2019	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	22012000	USD
CY2021	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	17756000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1370000	USD
CY2021	us-gaap	Noninterest Expense NoninterestExpense	599012000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	338055000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	91946000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	396310000	USD
CY2020	us-gaap	Noninterest Expense NoninterestExpense	704356000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	600289000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	84116000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25657000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	84295000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	253939000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	66289000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	312015000	USD
CY2021	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	18721000	USD
CY2020	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	9750000	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	9750000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	235218000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	56539000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	2242000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	302265000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-80366000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	8639000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	10674000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-16877000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	1815000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-63489000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	6824000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	8432000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	190450000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	73113000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	320447000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.65
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.12
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.01
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.60
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.12
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.99
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2480308000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	312015000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	8432000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	320447000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11775000	USD
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	9750000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1459000	USD
CY2019	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	0	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2801321000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	66289000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	6824000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	73113000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	15681000	USD
CY2020	us-gaap	Dividends Preferred Stock DividendsPreferredStock	9750000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1987000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	2871224000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	253939000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-63489000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	190450000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	30061000	USD
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	289723000	USD
CY2021	us-gaap	Dividends Preferred Stock DividendsPreferredStock	18721000	USD
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-3121000	USD
CY2021	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	150000000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	3209616000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	253939000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	66289000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	312015000	USD
CY2021	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-30000000	USD
CY2020	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	258000000	USD
CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	75000000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-20253000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7964000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10796000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	93406000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	74925000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	37267000	USD
CY2021	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	1317000	USD
CY2020	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	58026000	USD
CY2019	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-20259000	USD
CY2021	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	-16448000	USD
CY2020	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	20164000	USD
CY2019	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	5803000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	31326000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	17441000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	17604000	USD
CY2021	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	1413899000	USD
CY2020	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	11366986000	USD
CY2019	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	10183057000	USD
CY2021	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	1676601000	USD
CY2020	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	13619623000	USD
CY2019	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	9508927000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-154114000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-10654000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	143538000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-70154000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	5749000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	98735000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	657315000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2639869000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-240189000	USD
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1059897000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	3001746000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	113233000	USD
CY2021	tcbi	Principal Payments Received On Available For Sale Securities PrincipalPaymentsReceivedOnAvailableForSaleSecurities	569931000	USD
CY2020	tcbi	Principal Payments Received On Available For Sale Securities PrincipalPaymentsReceivedOnAvailableForSaleSecurities	52609000	USD
CY2019	tcbi	Principal Payments Received On Available For Sale Securities PrincipalPaymentsReceivedOnAvailableForSaleSecurities	6185000	USD
CY2021	tcbi	Payments For Originations Of Mortgage Finance Loans PaymentsForOriginationsOfMortgageFinanceLoans	167084439000	USD
CY2020	tcbi	Payments For Originations Of Mortgage Finance Loans PaymentsForOriginationsOfMortgageFinanceLoans	216234122000	USD
CY2019	tcbi	Payments For Originations Of Mortgage Finance Loans PaymentsForOriginationsOfMortgageFinanceLoans	138759289000	USD
CY2021	tcbi	Proceeds From Sale And Collection Of Mortgage Finance Loans ProceedsFromSaleAndCollectionOfMortgageFinanceLoans	168688351000	USD
CY2020	tcbi	Proceeds From Sale And Collection Of Mortgage Finance Loans ProceedsFromSaleAndCollectionOfMortgageFinanceLoans	215324562000	USD
CY2019	tcbi	Proceeds From Sale And Collection Of Mortgage Finance Loans ProceedsFromSaleAndCollectionOfMortgageFinanceLoans	136466964000	USD
CY2021	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	115891000	USD
CY2020	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	0	USD
CY2019	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	0	USD
CY2021	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-7076000	USD
CY2019	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2935317000	USD
CY2020	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-926176000	USD
CY2019	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-139868000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4127000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2796000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	16651000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1232786000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2276156000	USD
CY2021	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-2887224000	USD
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	4517996000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	5872480000	USD
CY2021	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	3121000	USD
CY2020	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1986000	USD
CY2019	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1459000	USD
CY2021	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	289723000	USD
CY2020	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	9750000	USD
CY2021	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	150000000	USD
CY2020	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	0	USD
CY2019	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	0	USD
CY2021	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	18721000	USD
CY2020	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	9750000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	639440000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	111000000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2021	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-800000000	USD
CY2020	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	600000000	USD
CY2019	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-1500000000	USD
CY2021	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	108919000	USD
CY2020	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	30015000	USD
CY2019	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	499408000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-3149822000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	5076245000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3861863000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-1259721000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	4780797000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	1345518000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9206380000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4425583000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3080065000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	7946659000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9206380000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4425583000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	111199000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	189696000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	393507000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	101101000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	26152000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	89967000	USD
CY2020	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	993670000	USD
CY2019	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	1273547000	USD
CY2020	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1039407000	USD
CY2019	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1354823000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	851321000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	969231000	USD
CY2020	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	593321000	USD
CY2019	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	894231000	USD
CY2020	tcbi	Fees And Commissions Swap Fees FeesAndCommissionsSwapFees	0	USD
CY2019	tcbi	Fees And Commissions Swap Fees FeesAndCommissionsSwapFees	0	USD
CY2020	tcbi	Fees And Commissions Investment Banking Income FeesAndCommissionsInvestmentBankingIncome	22687000	USD
CY2019	tcbi	Fees And Commissions Investment Banking Income FeesAndCommissionsInvestmentBankingIncome	14876000	USD
CY2020	us-gaap	Noninterest Income NoninterestIncome	202981000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	102368000	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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.</span></div>
CY2021	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	18721000	USD
CY2020	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	9750000	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	9750000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	235218000	USD
CY2021	us-gaap	Guarantees Indemnifications And Warranties Policies GuaranteesIndemnificationsAndWarrantiesPolicies	<div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Financial Instruments with Off-Balance Sheet Risk</span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company has undertaken certain guarantee obligations in the ordinary course of business which include liabilities with off-balance sheet risk. We consider the following arrangements to be guarantees: commitments to extend credit, standby letters of credit and indemnification agreements included within third party contractual arrangements.</span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Bank is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit that involve varying degrees of credit risk in excess of the amount recognized on the consolidated balance sheets. The Bank’s exposure to credit loss in the event of non-performance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual amount of these instruments. The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The amount of collateral obtained, if deemed necessary, is based on management’s credit evaluation of the borrower.</span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Bank evaluates each customer’s creditworthiness on a case-by-case basis. Commitments to extend credit do not include our mortgage finance arrangements with mortgage loan originators through our 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 we have no obligation to purchase interests in the mortgage loans subject to the arrangements.</span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Standby letters of credit are conditional commitments issued by the Bank to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers.</span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">In conjunction with the sale and securitization of loans held for sale and their related servicing rights, we may be exposed to liability resulting from recourse, repurchase and make-whole agreements. If it is determined subsequent to our 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, </span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">which may include guarantees that prepayments will not occur within a specified and customary time frame, we may have an obligation to either (a) repurchase the loan for the unpaid principal balance, accrued interest and related advances, (b) indemnify the purchaser against any loss it suffers or (c) make the purchaser whole for the economic benefits of the loan and its related servicing rights.</span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Our repurchase, indemnification and make-whole obligations vary based upon the terms of the applicable agreements, the nature of the asserted breach and the status of the mortgage loan at the time a claim is made. We establish reserves for estimated losses of this nature inherent in the origination of mortgage loans by estimating the losses inherent in the population of all loans sold based on trends in claims and actual loss severities experienced. The reserve will include accruals for probable contingent losses in addition to those identified in the pipeline of claims received.</span></div>
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	56539000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	253939000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	66289000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	312015000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	302265000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50580660	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50430326	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50286300	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	560314	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	152653	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	132904	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	51140974	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50582979	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50419204	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.65
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.12
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.01
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.60
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.12
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.99
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	93945	shares
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	453024	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	86308	shares
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	3598600000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	9563000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	69962000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	3538201000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	3143171000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	25803000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	5836000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	3163138000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	3598600000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	3538201000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	3143171000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	3163138000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	2895137000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	51636000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	412196000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	18326000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	3307333000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	69962000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	452975000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	2540000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	11417000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	3296000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	464392000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	5836000	USD
CY2021Q4	tcbi	Number Of Securities In An Unrealized Loss Position NumberOfSecuritiesInAnUnrealizedLossPosition	119	security
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	45600000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	33800000	USD
CY2021	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	2277000	USD
CY2020	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	2998000	USD
CY2021	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-1065000	USD
CY2020	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-1418000	USD
CY2021	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	1212000	USD
CY2020	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	1580000	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	22871961000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	24501830000	USD
CY2021Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	65007000	USD
CY2020Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	70970000	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	22871961000	USD
CY2020Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	2804231000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	211866000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	254615000	USD
CY2021Q4	us-gaap	Notes Receivable Net NotesReceivableNet	22595088000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	24176245000	USD
CY2021Q4	us-gaap	Participating Mortgage Loans Mortgage Obligations Amount ParticipatingMortgageLoansMortgageObligationsAmount	1000000000	USD
CY2020Q4	us-gaap	Participating Mortgage Loans Mortgage Obligations Amount ParticipatingMortgageLoansMortgageObligationsAmount	1200000000	USD
CY2021Q4	us-gaap	Interest Receivable InterestReceivable	50300000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	56500000	USD
CY2021Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	2431199000	USD
CY2021Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	4606457000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	2098354000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1602034000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	866577000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	5939419000	USD
CY2021Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	5205040000	USD
CY2021Q4	tcbi	Financing Receivable Revolving Converted To Term Loans FinancingReceivableRevolvingConvertedToTermLoans	122881000	USD
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	249769000	USD
CY2020Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	5216591000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	2643706000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1690775000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	747648000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	6831441000	USD
CY2020Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	4369332000	USD
CY2020Q4	tcbi	Financing Receivable Revolving Converted To Term Loans FinancingReceivableRevolvingConvertedToTermLoans	198106000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	24501830000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	254615000	USD
CY2021	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-29831000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	19597000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	6679000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	12918000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	211866000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	195047000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	207062000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	8276000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	198786000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	254615000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	12900000	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	72502000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	22871961000	USD
CY2021Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	17965000	USD
CY2021Q4	tcbi	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing Premium Finance Loans FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruingPremiumFinanceLoans	3300000	USD
CY2021	tcbi	Financing Receivable Nonaccrual Interest Income Reversed FinancingReceivableNonaccrualInterestIncomeReversed	1200000	USD
CY2020	tcbi	Financing Receivable Nonaccrual Interest Income Reversed FinancingReceivableNonaccrualInterestIncomeReversed	1300000	USD
CY2021Q4	tcbi	Financing Receivable Modifications Non Accrual Loans Met Criteria For Restrucutred FinancingReceivableModificationsNonAccrualLoansMetCriteriaForRestrucutred	19400000	USD
CY2020Q4	tcbi	Financing Receivable Modifications Non Accrual Loans Met Criteria For Restrucutred FinancingReceivableModificationsNonAccrualLoansMetCriteriaForRestrucutred	45400000	USD
CY2021	tcbi	Loans Receivable Heldforsale Increase Decreasein Fair Value LoansReceivableHeldforsaleIncreaseDecreaseinFairValue	-2374000	USD
CY2020	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	8	loan
CY2020Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	40526000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	281137000	USD
CY2019Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	2568362000	USD
CY2021	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Additions To Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowAdditionsToHeldForSale	1413899000	USD
CY2020	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Additions To Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowAdditionsToHeldForSale	11366986000	USD
CY2021	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Deductions From Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowDeductionsFromHeldForSale	1686567000	USD
CY2020	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Deductions From Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowDeductionsFromHeldForSale	13654211000	USD
CY2021Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	8469000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	281137000	USD
CY2020Q4	tcbi	Loans Held For Sale Fair Value Over Under Principal Amount Outstanding LoansHeldForSaleFairValueOverUnderPrincipalAmountOutstanding	2028000	USD
CY2019Q4	tcbi	Loans Held For Sale Fair Value Over Under Principal Amount Outstanding LoansHeldForSaleFairValueOverUnderPrincipalAmountOutstanding	8772000	USD
CY2020	tcbi	Loans Receivable Heldforsale Increase Decreasein Fair Value LoansReceivableHeldforsaleIncreaseDecreaseinFairValue	-6744000	USD
CY2021Q4	tcbi	Loans Held For Sale Fair Value Over Under Principal Amount Outstanding LoansHeldForSaleFairValueOverUnderPrincipalAmountOutstanding	-346000	USD
CY2020Q4	tcbi	Loans Held For Sale Fair Value Over Under Principal Amount Outstanding LoansHeldForSaleFairValueOverUnderPrincipalAmountOutstanding	2028000	USD
CY2021Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	8123000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	283165000	USD
CY2020	tcbi	Gain Loss On Repurchase Indemnificationand Make Whole Obligations GainLossOnRepurchaseIndemnificationandMakeWholeObligations	-8400000	USD
CY2020Q4	us-gaap	Escrow Deposit EscrowDeposit	152600000	USD
CY2020Q4	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	13800000000	USD
CY2020Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof50 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof50BasisPointsAdverseChangeinPrepaymentSpeed	-12203000	USD
CY2020Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof100 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof100BasisPointsAdverseChangeinPrepaymentSpeed	-16062000	USD
CY2021Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	400000	USD
CY2020Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	621000	USD
CY2021	tcbi	Gain Loss On Repurchase Indemnificationand Make Whole Obligations GainLossOnRepurchaseIndemnificationandMakeWholeObligations	-92000	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	259000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	0	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	55330000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	66968000	USD
CY2021Q4	tcbi	Right Of Use Assets Finance And Operating RightOfUseAssetsFinanceAndOperating	55589000	USD
CY2020Q4	tcbi	Right Of Use Assets Finance And Operating RightOfUseAssetsFinanceAndOperating	66968000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	259000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	0	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	69184000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	82529000	USD
CY2021Q4	tcbi	Lease Liabilities Finance And Operating LeaseLiabilitiesFinanceAndOperating	69443000	USD
CY2020Q4	tcbi	Lease Liabilities Finance And Operating LeaseLiabilitiesFinanceAndOperating	82529000	USD
CY2021Q4	us-gaap	Lessee Finance Lease Term Of Contract1 LesseeFinanceLeaseTermOfContract1	P3Y
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	32000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	0	USD
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	0	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	15608000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	15544000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	19000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	19000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	4747000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	4476000	USD
CY2021	us-gaap	Sublease Income SubleaseIncome	107000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	107000	USD
CY2021	us-gaap	Lease Cost LeaseCost	20299000	USD
CY2020	us-gaap	Lease Cost LeaseCost	19932000	USD
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	0	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	17666000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	16568000	USD
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	32000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	0	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	291000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2109000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	833000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2168000	USD
CY2021Q4	tcbi	Goodwill And Intangible Assets Gross GoodwillAndIntangibleAssetsGross	24474000	USD
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y8M12D
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y10M24D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y6M
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0077
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0230
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0274
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	98000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	17168000	USD
CY2021Q4	tcbi	Lease Liability To Be Paid Year One LeaseLiabilityToBePaidYearOne	17266000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	98000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	17205000	USD
CY2021Q4	tcbi	Lease Liability To Be Paid Year Two LeaseLiabilityToBePaidYearTwo	17303000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	66000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	12063000	USD
CY2021Q4	tcbi	Lease Liability To Be Paid Year Three LeaseLiabilityToBePaidYearThree	12129000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	0	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	5610000	USD
CY2021Q4	tcbi	Lease Liability To Be Paid Year Four LeaseLiabilityToBePaidYearFour	5610000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	0	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	5473000	USD
CY2021Q4	tcbi	Lease Liability To Be Paid Year Five LeaseLiabilityToBePaidYearFive	5473000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	17442000	USD
CY2021Q4	tcbi	Lease Liability To Be Paid After Year Five LeaseLiabilityToBePaidAfterYearFive	17442000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	262000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	74961000	USD
CY2021Q4	tcbi	Lease Liability To Be Paid LeaseLiabilityToBePaid	75223000	USD
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	3000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	5777000	USD
CY2021Q4	tcbi	Lease Liability Undiscounted Excess Amount LeaseLiabilityUndiscountedExcessAmount	5780000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	259000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	69184000	USD
CY2021Q4	tcbi	Lease Liability LeaseLiability	69443000	USD
CY2021Q4	us-gaap	Goodwill Gross GoodwillGross	15468000	USD
CY2021Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	374000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	15094000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	9006000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	6838000	USD
CY2021Q4	tcbi	Goodwill And Intangible Assets Accumulated Amortization GoodwillAndIntangibleAssetsAccumulatedAmortization	7212000	USD
CY2021Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	17262000	USD
CY2020Q4	us-gaap	Goodwill Gross GoodwillGross	15468000	USD
CY2020Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	374000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	15094000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	9006000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	6433000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2573000	USD
CY2020Q4	tcbi	Goodwill And Intangible Assets Gross GoodwillAndIntangibleAssetsGross	24474000	USD
CY2020Q4	tcbi	Goodwill And Intangible Assets Accumulated Amortization GoodwillAndIntangibleAssetsAccumulatedAmortization	6807000	USD
CY2020Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	17667000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	405000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	432000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	471000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	405000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	382000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	268000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	268000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	268000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	577000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2168000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	76461000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	73858000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	55560000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	49312000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	20901000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	24546000	USD
CY2021	us-gaap	Depreciation Depreciation	8100000	USD
CY2020	us-gaap	Depreciation Depreciation	9500000	USD
CY2019	us-gaap	Depreciation Depreciation	9200000	USD
CY2021Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	13390370000	USD
CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	12740947000	USD
CY2021Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	2837521000	USD
CY2020Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	4396243000	USD
CY2021Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	10682768000	USD
CY2020Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	11619880000	USD
CY2021Q4	us-gaap	Time Deposits TimeDeposits	1198706000	USD
CY2020Q4	us-gaap	Time Deposits TimeDeposits	2239519000	USD
CY2021Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	14718995000	USD
CY2020Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	18255642000	USD
CY2021Q4	us-gaap	Deposits Deposits	28109365000	USD
CY2020Q4	us-gaap	Deposits Deposits	30996589000	USD
CY2021Q4	tcbi	Interest Bearing Time Deposit Maturities Year One InterestBearingTimeDepositMaturitiesYearOne	1059975000	USD
CY2021Q4	tcbi	Interest Bearing Time Deposit Maturities Year Two InterestBearingTimeDepositMaturitiesYearTwo	132036000	USD
CY2021Q4	tcbi	Interest Bearing Time Deposit Maturities Year Three InterestBearingTimeDepositMaturitiesYearThree	3031000	USD
CY2021Q4	tcbi	Interest Bearing Time Deposit Maturities Year Four InterestBearingTimeDepositMaturitiesYearFour	3467000	USD
CY2021Q4	tcbi	Interest Bearing Time Deposit Maturities Year Five InterestBearingTimeDepositMaturitiesYearFive	192000	USD
CY2021Q4	tcbi	Interest Bearing Time Deposit Maturities After Year Five InterestBearingTimeDepositMaturitiesAfterYearFive	5000	USD
CY2021Q4	tcbi	Interest Bearing Time Deposits InterestBearingTimeDeposits	1198706000	USD
CY2021Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	186000000.0	USD
CY2020Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	375700000	USD
CY2021Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	8542814000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	10599856000	USD
CY2021Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	892000000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	1030000000	USD
CY2021Q4	tcbi	Federal Reserve Borrowings Amount Of Available Unused Funds FederalReserveBorrowingsAmountOfAvailableUnusedFunds	2414702000	USD
CY2020Q4	tcbi	Federal Reserve Borrowings Amount Of Available Unused Funds FederalReserveBorrowingsAmountOfAvailableUnusedFunds	2179000000	USD
CY2021Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	75000000	USD
CY2020Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	130000000	USD
CY2020	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	0	USD
CY2021	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	0	USD
CY2019	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	0	USD
CY2012Q3	us-gaap	Subordinated Debt SubordinatedDebt	111000000	USD
CY2012Q3	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0650
CY2014Q1	us-gaap	Subordinated Debt SubordinatedDebt	175000000	USD
CY2014Q1	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0525
CY2021Q4	tcbi	Reference Pool Of Mortgage Warehouse Loans ReferencePoolOfMortgageWarehouseLoans	2200000000	USD
CY2021Q4	tcbi	Limit For Loss Risk Transferred LimitForLossRiskTransferred	275000000	USD
CY2021Q2	us-gaap	Subordinated Debt SubordinatedDebt	375000000	USD
CY2021Q2	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0400
CY2021Q2	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	370700000	USD
CY2012Q3	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0650
CY2020Q4	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	17434000	USD
CY2019Q4	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	8640000	USD
CY2021	tcbi	Financing Receivable Provision For Off Balance Sheet Credit Losses FinancingReceivableProvisionForOffBalanceSheetCreditLosses	-169000	USD
CY2020	tcbi	Financing Receivable Provision For Off Balance Sheet Credit Losses FinancingReceivableProvisionForOffBalanceSheetCreditLosses	8231000	USD
CY2021Q4	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	17265000	USD
CY2020Q4	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	17434000	USD
CY2009Q4	us-gaap	Assets Assets	15000000000	USD
CY2021Q4	tcbi	Common Equity Tier1 Capital CommonEquityTier1Capital	2949785000	USD
CY2021Q4	tcbi	Common Equity Tier1 Capitalto Risk Weighted Assets CommonEquityTier1CapitaltoRiskWeightedAssets	0.1106
CY2021Q4	us-gaap	Capital Capital	4085540000	USD
CY2021Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1532
CY2021Q4	us-gaap	Capital Required To Be Well Capitalized CapitalRequiredToBeWellCapitalized	2666348000	USD
CY2021Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1000
CY2021Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	3359785000	USD
CY2021Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1260
CY2021Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized TierOneRiskBasedCapitalRequiredToBeWellCapitalized	1599809000	USD
CY2021Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0600
CY2021Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	3359785000	USD
CY2021Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0901
CY2020Q4	tcbi	Common Equity Tier1 Capital CommonEquityTier1Capital	2708150000	USD
CY2020Q4	tcbi	Common Equity Tier1 Capitalto Risk Weighted Assets CommonEquityTier1CapitaltoRiskWeightedAssets	0.0935
CY2020Q4	us-gaap	Capital Capital	3498737000	USD
CY2020Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1208
CY2020Q4	us-gaap	Capital Required To Be Well Capitalized CapitalRequiredToBeWellCapitalized	2895437000	USD
CY2020Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1000
CY2020Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	2968150000	USD
CY2020Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1025
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	764496	shares
CY2020Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized TierOneRiskBasedCapitalRequiredToBeWellCapitalized	1737262000	USD
CY2020Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0600
CY2020Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	2968150000	USD
CY2020Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0752
CY2021Q4	tcbi	Reference Pool Of Mortgage Warehouse Loans ReferencePoolOfMortgageWarehouseLoans	2200000000	USD
CY2021Q4	tcbi	Limit For Loss Risk Transferred LimitForLossRiskTransferred	275000000	USD
CY2021Q4	tcbi	Reference Pool Of Mortgage Warehouse Loans ReferencePoolOfMortgageWarehouseLoans	2200000000	USD
CY2020Q4	tcbi	Federal Reserve Mandated Reserve Amount FederalReserveMandatedReserveAmount	0	USD
CY2021	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	10200000	USD
CY2020	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	10300000	USD
CY2019	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	9500000	USD
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	274000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1000000	USD
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1000000	USD
CY2021Q4	tcbi	Share Based Compensation Arrangement By Share Based Payment Award Minimum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumEmployeeSubscriptionRate	0.01
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate	0.10
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	2550000	shares
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4072000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	104369000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	33621000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	26000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	36000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	30100000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	15700000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	11800000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	97608000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	32701000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	69427000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6761000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	920000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	73499000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-19020000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-7964000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	10796000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1233000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-20253000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7964000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10796000	USD
CY2021	tcbi	Federal Tax Expense Benefit FederalTaxExpenseBenefit	78588000	USD
CY2020	tcbi	Federal Tax Expense Benefit FederalTaxExpenseBenefit	24737000	USD
CY2019	tcbi	Federal Tax Expense Benefit FederalTaxExpenseBenefit	80223000	USD
CY2021	tcbi	State And Local Tax Expense Benefit StateAndLocalTaxExpenseBenefit	5528000	USD
CY2020	tcbi	State And Local Tax Expense Benefit StateAndLocalTaxExpenseBenefit	920000	USD
CY2019	tcbi	State And Local Tax Expense Benefit StateAndLocalTaxExpenseBenefit	4072000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	84116000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25657000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	84295000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	70992000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	19309000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	85504000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4108000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.01
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	726000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.01
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3217000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.01
CY2021	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	1855000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.01
CY2020	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	3356000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.04
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	5127000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.01
CY2021	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	179000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0
CY2020	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1216000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.01
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	2052000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.01
CY2021	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Fdic Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedFDICAmount	2936000	USD
CY2021	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Fdic Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedFDICPercent	0.01
CY2020	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Fdic Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedFDICAmount	3920000	USD
CY2020	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Fdic Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedFDICPercent	0.04
CY2019	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Fdic Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedFDICAmount	2468000	USD
CY2019	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Fdic Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedFDICPercent	0.01
CY2021	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Compensation Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedCompensationAmount	6377000	USD
CY2021	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedCompensationPercent	0.02
CY2020	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Compensation Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedCompensationAmount	3098000	USD
CY2020	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedCompensationPercent	0.03
CY2019	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Compensation Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedCompensationAmount	628000	USD
CY2019	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedCompensationPercent	0
CY2021	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	1737000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.01
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	3176000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.04
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-343000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	84116000	USD
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.25
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25657000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.28
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	84295000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.21
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	722000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1100000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1300000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	51738000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	59279000	USD
CY2021Q4	tcbi	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	15615000	USD
CY2020Q4	tcbi	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	17983000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	11204000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	11181000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4649000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3913000	USD
CY2021Q4	tcbi	Deferred Tax Assets Non Accrual Interest DeferredTaxAssetsNonAccrualInterest	1874000	USD
CY2020Q4	tcbi	Deferred Tax Assets Non Accrual Interest DeferredTaxAssetsNonAccrualInterest	1245000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	6705000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	5795000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	12684000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1671000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3136000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	106140000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	102532000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	3110000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	2997000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	8414000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	8603000	USD
CY2021Q4	tcbi	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	14266000	USD
CY2020Q4	tcbi	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	16617000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	22566000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	10567000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	14968000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	4193000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3446000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3381000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	39803000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	73325000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	66337000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	29207000	USD
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	6933000	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	2125000	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	1428000	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	5000	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	23000	USD
CY2021Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	7658000	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	7043000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	1472000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	2077000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	248000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	247000	USD
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	6933000	USD
CY2021Q4	tcbi	Cash Pledged As Derivative Collateral CashPledgedAsDerivativeCollateral	40300000	USD
CY2020Q4	tcbi	Cash Pledged As Derivative Collateral CashPledgedAsDerivativeCollateral	108300000	USD
CY2021Q4	tcbi	Time Deposits From Related Parties TimeDepositsFromRelatedParties	10200000	USD
CY2020Q4	tcbi	Time Deposits From Related Parties TimeDepositsFromRelatedParties	11600000	USD
CY2021Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	219892000	USD
CY2021Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	216589000	USD
CY2021Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	216953000	USD
CY2021Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	223151000	USD
CY2021Q4	us-gaap	Interest Expense InterestExpense	25860000	USD
CY2021Q3	us-gaap	Interest Expense InterestExpense	26053000	USD
CY2021Q2	us-gaap	Interest Expense InterestExpense	27496000	USD
CY2021Q1	us-gaap	Interest Expense InterestExpense	28339000	USD
CY2021Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	194032000	USD
CY2021Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	190536000	USD
CY2021Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	189457000	USD
CY2021Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	194812000	USD
CY2021Q4	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-10000000	USD
CY2021Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	5000000	USD
CY2021Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-19000000	USD
CY2021Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-6000000	USD
CY2021Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	204032000	USD
CY2021Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	185536000	USD
CY2021Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	208457000	USD
CY2021Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	200812000	USD
CY2021Q4	us-gaap	Noninterest Income NoninterestIncome	31459000	USD
CY2021Q3	us-gaap	Noninterest Income NoninterestIncome	24779000	USD
CY2021Q2	us-gaap	Noninterest Income NoninterestIncome	37639000	USD
CY2021Q1	us-gaap	Noninterest Income NoninterestIncome	44353000	USD
CY2021Q4	us-gaap	Noninterest Expense NoninterestExpense	146649000	USD
CY2021Q3	us-gaap	Noninterest Expense NoninterestExpense	152987000	USD
CY2021Q2	us-gaap	Noninterest Expense NoninterestExpense	149060000	USD
CY2021Q1	us-gaap	Noninterest Expense NoninterestExpense	150316000	USD
CY2021Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	88842000	USD
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	57328000	USD
CY2021Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	97036000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	94849000	USD
CY2021Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23712000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13938000	USD
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23555000	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22911000	USD
CY2021Q4	us-gaap	Net Income Loss NetIncomeLoss	65130000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	43390000	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	73481000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	71938000	USD
CY2021Q4	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4313000	USD
CY2021Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4312000	USD
CY2021Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	6317000	USD
CY2021Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3779000	USD
CY2021Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	60817000	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	39078000	USD
CY2021Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	67164000	USD
CY2021Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	68159000	USD
CY2021Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.20
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.76
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.31
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.33
CY2021Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.19
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.76
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.31
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.33
CY2020Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	245348000	USD
CY2020Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	241554000	USD
CY2020Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	248648000	USD
CY2020Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	303857000	USD
CY2020Q4	us-gaap	Interest Expense InterestExpense	32153000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	36162000	USD
CY2020Q2	us-gaap	Interest Expense InterestExpense	42082000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	77689000	USD
CY2020Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	213195000	USD
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	205392000	USD
CY2020Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	206566000	USD
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	226168000	USD
CY2020Q4	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	32000000	USD
CY2020Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	30000000	USD
CY2020Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	100000000	USD
CY2020Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	96000000	USD
CY2020Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	181195000	USD
CY2020Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	175392000	USD
CY2020Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	106566000	USD
CY2020Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	130168000	USD
CY2020Q4	us-gaap	Noninterest Income NoninterestIncome	52678000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	62525000	USD
CY2020Q2	us-gaap	Noninterest Income NoninterestIncome	73847000	USD
CY2020Q1	us-gaap	Noninterest Income NoninterestIncome	13931000	USD
CY2020Q4	us-gaap	Noninterest Expense NoninterestExpense	150863000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	165741000	USD
CY2020Q2	us-gaap	Noninterest Expense NoninterestExpense	222335000	USD
CY2020Q1	us-gaap	Noninterest Expense NoninterestExpense	165417000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	83010000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	72176000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-41922000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-21318000	USD
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22834000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	15060000	USD
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-7606000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-4631000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	60176000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	57116000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-34316000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-16687000	USD
CY2020Q4	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
CY2020Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2438000	USD
CY2020Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
CY2020Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2438000	USD
CY2020Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	57739000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	54678000	USD
CY2020Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-36753000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-19125000	USD
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.14
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.08
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.73
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.38
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.14
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.08
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.73
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.38

Files In Submission

Name	View Source	Status
0001077428-22-000012-index-headers.html	Edgar Link	pending
0001077428-22-000012-index.html	Edgar Link	pending
0001077428-22-000012.txt	Edgar Link	pending
0001077428-22-000012-xbrl.zip	Edgar Link	pending
ex21-subsidiariesoftheregi.htm	Edgar Link	pending
ex311-202110k.htm	Edgar Link	pending
ex312-202110k.htm	Edgar Link	pending
ex321-202110k.htm	Edgar Link	pending
ex322-202110k.htm	Edgar Link	pending
exhibit10122021performance.htm	Edgar Link	pending
exhibit1013transitionagree.htm	Edgar Link	pending
exhibit1014severancepolicy.htm	Edgar Link	pending
exhibit1015keyexecutivecha.htm	Edgar Link	pending
exhibit231-consent.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
image_0a.jpg	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
R102.htm	Edgar Link	pending
R103.htm	Edgar Link	pending
R104.htm	Edgar Link	pending
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
tcbi-20211231.htm	Edgar Link	pending
tcbi-20211231.xsd	Edgar Link	pending
tcbi-20211231_cal.xml	Edgar Link	unprocessable
tcbi-20211231_def.xml	Edgar Link	unprocessable
tcbi-20211231_g1.jpg	Edgar Link	pending
tcbi-20211231_g2.jpg	Edgar Link	pending
tcbi-20211231_htm.xml	Edgar Link	completed
tcbi-20211231_lab.xml	Edgar Link	unprocessable
tcbi-20211231_pre.xml	Edgar Link	unprocessable

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

2021 Q4 Form 10-K Financial Statement

#000107742822000012 Filed on February 09, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBI TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

2021 Q4 Form 10-K Financial Statement

#000107742822000012 Filed on February 09, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi