$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

$tcbi Overview Financials Valuation SEC Filings Company Website

2020 Q1 Form 10-K Financial Statement

#000107742821000013 Filed on February 09, 2021

Income Statement

Concept	2020 Q1	2019 Q4	2019 Q3
Revenue	$303.9M	$337.8M	$355.1M
YoY Change	-6.67%	4.99%	17.68%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development	$13.79M		$10.81M
YoY Change	49.93%		45.33%
% of Gross Profit
Depreciation & Amortization	$13.12M	$11.50M	$9.900M
YoY Change	68.4%	59.72%	15.12%
% of Gross Profit
Operating Expenses	$13.79M		$10.81M
YoY Change	49.93%		45.33%
Operating Profit
YoY Change
Interest Expense	$77.69M	$89.37M	$102.9M
YoY Change	-13.63%	10.27%	47.94%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	-$21.32M	$80.96M	$112.0M
YoY Change	-120.48%	-11.12%	3.22%
Income Tax	-$4.631M	$16.54M	$23.96M
% Of Pretax Income		20.43%	21.38%
Net Earnings	-$16.69M	$64.42M	$88.08M
YoY Change	-120.42%	-10.39%	2.96%
Net Earnings / Revenue	-5.49%	19.07%	24.8%
Basic Earnings Per Share	-$0.38	$1.23	$1.70
Diluted Earnings Per Share	-$0.38	$1.23	$1.70
COMMON SHARES
Basic Shares Outstanding	50.37M shares	50.32M shares	50.31M shares
Diluted Shares Outstanding	50.47M shares		50.42M shares

Balance Sheet

Concept	2020 Q1	2019 Q4	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$9.661B	$4.426B	$5.209B
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	$29.66M	$31.21M	$32.67M
YoY Change	22.57%	31.13%	36.09%
Goodwill		$15.09M
YoY Change		0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$35.88B	$32.55B	$33.53B
YoY Change	26.41%	15.18%	23.59%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$17.00M	$13.00M	$34.00M
YoY Change	-29.17%	-38.1%	100.0%
Accrued Expenses			$98.00M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$295.0M	$142.0M	$140.0M
YoY Change	-67.15%	-77.85%	-71.25%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$17.00M	$13.00M	$132.0M
YoY Change	-82.29%	-38.1%	676.47%
LONG-TERM LIABILITIES
Long-Term Debt	$396.0M	$396.0M	$395.0M
YoY Change	0.25%	0.25%	0.0%
Other Long-Term Liabilities	$334.0M	$318.0M	$188.0M
YoY Change	106.17%	63.92%	-12.96%
Total Long-Term Liabilities	$730.0M	$714.0M	$583.0M
YoY Change	31.06%	21.22%	-4.58%
TOTAL LIABILITIES
Total Short-Term Liabilities	$17.00M	$13.00M	$132.0M
Total Long-Term Liabilities	$730.0M	$714.0M	$583.0M
Total Liabilities	$33.08B	$29.75B	$30.77B
YoY Change	28.2%	15.4%	24.57%
SHAREHOLDERS EQUITY
Retained Earnings	$1.664B	$1.664B	$1.602B
YoY Change	15.48%	22.2%	22.08%
Common Stock	$504.0K	$503.0K	$503.0K
YoY Change	0.2%	0.2%	0.2%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$8.000K	$8.000K	$8.000K
YoY Change	0.0%	0.0%	0.0%
Treasury Stock Shares	417.0 shares	417.0 shares	417.0 shares
Shareholders Equity	$2.773B	$2.801B	$2.736B
YoY Change
Total Liabilities & Shareholders Equity	$35.88B	$32.55B	$33.53B
YoY Change	26.41%	15.18%	23.59%

Cashflow Statement

Concept	2020 Q1	2019 Q4	2019 Q3
OPERATING ACTIVITIES
Net Income	-$16.69M	$64.42M	$88.08M
YoY Change	-120.42%	-10.39%	2.96%
Depreciation, Depletion And Amortization	$13.12M	$11.50M	$9.900M
YoY Change	68.4%	59.72%	15.12%
Cash From Operating Activities	$1.786B	$189.4M	-$1.456B
YoY Change	987.78%	-170.51%	500.95%
INVESTING ACTIVITIES
Capital Expenditures	$1.007M	-$1.700M	-$6.200M
YoY Change	-61.88%	-15.0%	1140.0%
Acquisitions
YoY Change
Other Investing Activities	$145.0M	$63.70M	-$417.6M
YoY Change	-115.98%	-112.57%	-218.84%
Cash From Investing Activities	$144.0M	$62.00M	-$423.9M
YoY Change	-115.82%	-112.19%	-220.77%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$3.305B	-1.035B	3.444B
YoY Change	-112561.42%	-196.52%	-537.9%
NET CHANGE
Cash From Operating Activities	$1.786B	189.4M	-1.456B
Cash From Investing Activities	$144.0M	62.00M	-423.9M
Cash From Financing Activities	$3.305B	-1.035B	3.444B
Net Change In Cash	$5.235B	-783.7M	1.565B
YoY Change	-799.14%	-365.66%	-330.88%
FREE CASH FLOW
Cash From Operating Activities	$1.786B	$189.4M	-$1.456B
Capital Expenditures	$1.007M	-$1.700M	-$6.200M
Free Cash Flow	$1.785B	$191.1M	-$1.449B
YoY Change	1004.95%	-171.68%	499.63%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Entity Registrant Name EntityRegistrantName	TEXAS CAPITAL BANCSHARES INC/TX
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001077428
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2019Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilities
CY2020Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilities
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-34657
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	75-2679109
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	2000 McKinney Avenue
CY2020	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 700
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Dallas
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
CY2020	dei	Entity Address Country EntityAddressCountry	US
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	75201
CY2020	dei	City Area Code CityAreaCode	214
CY2020	dei	Local Phone Number LocalPhoneNumber	932-6600
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	1546867000	USD
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CY2020	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	103054000	USD
CY2019	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	44826000	USD
CY2018	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	30056000	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
CY2018	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	24307000	USD
CY2020	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	64625000	USD
CY2019	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	22573000	USD
CY2018	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	14934000	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	17756000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1370000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	41809000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	44701000	USD
CY2018	us-gaap	Other Noninterest Expense OtherNoninterestExpense	49670000	USD
CY2020	us-gaap	Noninterest Expense NoninterestExpense	704396000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	600850000	USD
CY2018	us-gaap	Noninterest Expense NoninterestExpense	532533000	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
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	373351000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25657000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	84295000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	79964000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	66289000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	312015000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	293387000	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
CY2018	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	9750000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	56539000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	302265000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	283637000	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
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	7000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	1815000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	2242000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	1000	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
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	6000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	73113000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	320447000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	293393000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.12
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.01
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.68
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.12
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.99
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.64
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	2190072000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	293387000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	6000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	293393000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8973000	USD
CY2018	us-gaap	Dividends Preferred Stock DividendsPreferredStock	9750000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-2382000	USD
CY2018	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	0	USD
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
CY2020	us-gaap	Net Income Loss NetIncomeLoss	66289000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	312015000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	293387000	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
CY2018	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	87000000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7964000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10796000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6400000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	74925000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	37267000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	32022000	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
CY2018	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-15934000	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
CY2018	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	-2823000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	17441000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	17604000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	16938000	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
CY2018	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	6753709000	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
CY2018	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	5759067000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-10654000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	143617000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	123542000	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
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2411000	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	-240268000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-679715000	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
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	101558000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0	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
CY2018	tcbi	Principal Payments Received On Available For Sale Securities PrincipalPaymentsReceivedOnAvailableForSaleSecurities	3426000	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
CY2018	tcbi	Payments For Originations Of Mortgage Finance Loans PaymentsForOriginationsOfMortgageFinanceLoans	99151237000	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
CY2018	tcbi	Proceeds From Sale And Collection Of Mortgage Finance Loans ProceedsFromSaleAndCollectionOfMortgageFinanceLoans	98581873000	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
CY2018	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1402068000	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
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7651000	USD
CY2020	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	0	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1992746000	USD
CY2019	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	0	USD
CY2018	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	70824000	USD
CY2020	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	0	USD
CY2019	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	79000	USD
CY2018	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	13645000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2935317000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2276077000	USD
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	4517996000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	5872480000	USD
CY2018	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1482933000	USD
CY2020	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1986000	USD
CY2019	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1459000	USD
CY2018	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	2382000	USD
CY2020	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	9750000	USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	9750000	USD
CY2018	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	9750000	USD
CY2020	us-gaap	Proceeds From Other Short Term Debt ProceedsFromOtherShortTermDebt	600000000	USD
CY2019	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	1500000000	USD
CY2018	us-gaap	Proceeds From Other Short Term Debt ProceedsFromOtherShortTermDebt	1100000000	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
CY2018	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	-276134000	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
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2846935000	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
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	174474000	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
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2905591000	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
CY2020	us-gaap	Interest Paid Net InterestPaidNet	189696000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	393507000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	236338000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	26152000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	89967000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	75405000	USD
CY2019Q4	us-gaap	Other Liabilities OtherLiabilities	318094000	USD
CY2018Q4	us-gaap	Other Liabilities OtherLiabilities	214324000	USD
CY2017Q4	us-gaap	Other Liabilities OtherLiabilities	194861000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	2190072000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	328483000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	29746748000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	25777459000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	22885573000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1663671000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1361406000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1077851000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2801321000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2480308000	USD
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	300899000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	266461000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	44701000	USD
CY2018	us-gaap	Other Noninterest Expense OtherNoninterestExpense	49670000	USD
CY2017	us-gaap	Other Noninterest Expense OtherNoninterestExpense	48048000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	600850000	USD
CY2018	us-gaap	Noninterest Expense NoninterestExpense	532533000	USD
CY2017	us-gaap	Noninterest Expense NoninterestExpense	466858000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	396310000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	373351000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	283637000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	186331000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	324726000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	312015000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	293387000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	196081000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	302265000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	320447000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	293393000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	196094000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1361406000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1077851000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	891520000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2480308000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	2190072000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	1997890000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1663671000	USD
CY2020Q4	us-gaap	Redeemable Noncontrolling Interest Equity Redemption Value RedeemableNoncontrollingInterestEquityRedemptionValue	7800000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1361406000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1077851000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2801321000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2480308000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	2190072000	USD
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	195047000	USD
CY2020Q1	us-gaap	Notes Receivable Net NotesReceivableNet	24451215000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	21064000	USD
CY2020Q1	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	8640000	USD
CY2020Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1663671000	USD
CY2020	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>
CY2020	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 in the consolidated balance sheets. The Bank’s exposure to credit loss in the event of non-performance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual amount of these instruments. The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The amount of collateral obtained, if deemed necessary, is based on management’s credit evaluation of the borrower.</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.</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, 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. The estimation process is designed to include amounts based on actual losses experienced from actual activity.</span></div>
CY2020	us-gaap	Net Income Loss NetIncomeLoss	66289000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	312015000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	293387000	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
CY2018	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	9750000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	56539000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	302265000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	283637000	USD
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
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	49936702	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
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	218275	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	117895	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
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50272872	shares
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	453024	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.12
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.01
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.68
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.12
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.99
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.64
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	86308	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	27100	shares
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
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	202929000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	14077000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	2749000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	214257000	USD
CY2020Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	3143171000	USD
CY2020Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	3163138000	USD
CY2019Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	202929000	USD
CY2019Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	214257000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
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
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	11964000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	2749000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	0	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	11964000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	2749000	USD
CY2020Q4	us-gaap	Available For Sale Securities Equity Securities AvailableForSaleSecuritiesEquitySecurities	33800000	USD
CY2019Q4	us-gaap	Available For Sale Securities Equity Securities AvailableForSaleSecuritiesEquitySecurities	25600000	USD
CY2020	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	2998000	USD
CY2019	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	2383000	USD
CY2020	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	-1418000	USD
CY2019	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	-119000	USD
CY2020	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	1580000	USD
CY2019	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	2264000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	24501830000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	24736642000	USD
CY2020Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	70970000	USD
CY2019Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	90380000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	254615000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	195047000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	24176245000	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	24451215000	USD
CY2020Q4	us-gaap	Participating Mortgage Loans Mortgage Obligations Amount ParticipatingMortgageLoansMortgageObligationsAmount	1200000000	USD
CY2019Q4	us-gaap	Participating Mortgage Loans Mortgage Obligations Amount ParticipatingMortgageLoansMortgageObligationsAmount	682700000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	56500000	USD
CY2019Q4	us-gaap	Interest Receivable InterestReceivable	63400000	USD
CY2020Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	2804231000	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
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	195047000	USD
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	249769000	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
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	191522000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	77794000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	77639000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3370000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	74269000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	195047000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	198800000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	31308000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	121989000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	24348533000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	24501830000	USD
CY2020Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	43688000	USD
CY2020Q4	tcbi	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing Premium Finance Loans FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruingPremiumFinanceLoans	6400000	USD
CY2020	tcbi	Financing Receivable Nonaccrual Interest Income Reversed FinancingReceivableNonaccrualInterestIncomeReversed	1300000	USD
CY2020Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	225400000	USD
CY2020Q4	tcbi	Financing Receivable Modifications Non Accrual Loans Met Criteria For Restrucutred FinancingReceivableModificationsNonAccrualLoansMetCriteriaForRestrucutred	45400000	USD
CY2019Q4	tcbi	Financing Receivable Modifications Non Accrual Loans Met Criteria For Restrucutred FinancingReceivableModificationsNonAccrualLoansMetCriteriaForRestrucutred	35100000	USD
CY2020	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	8	loan
CY2020Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	40526000	USD
CY2019	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	5	loan
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	26881000	USD
CY2019Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	2568362000	USD
CY2018Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1949785000	USD
CY2020	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Additions To Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowAdditionsToHeldForSale	11366986000	USD
CY2019	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Additions To Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowAdditionsToHeldForSale	10183057000	USD
CY2020	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Deductions From Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowDeductionsFromHeldForSale	13654211000	USD
CY2019	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Deductions From Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowDeductionsFromHeldForSale	9564480000	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
CY2019Q4	tcbi	Loans Held For Sale Fair Value Over Under Principal Amount Outstanding LoansHeldForSaleFairValueOverUnderPrincipalAmountOutstanding	8772000	USD
CY2018Q4	tcbi	Loans Held For Sale Fair Value Over Under Principal Amount Outstanding LoansHeldForSaleFairValueOverUnderPrincipalAmountOutstanding	19689000	USD
CY2020	tcbi	Loans Receivable Heldforsale Increase Decreasein Fair Value LoansReceivableHeldforsaleIncreaseDecreaseinFairValue	-6744000	USD
CY2019	tcbi	Loans Receivable Heldforsale Increase Decreasein Fair Value LoansReceivableHeldforsaleIncreaseDecreaseinFairValue	-10917000	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
CY2020Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	283165000	USD
CY2019Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	2577134000	USD
CY2020Q4	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	13800000000	USD
CY2019Q4	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	6700000000	USD
CY2020Q4	us-gaap	Escrow Deposit EscrowDeposit	152600000	USD
CY2019Q4	us-gaap	Escrow Deposit EscrowDeposit	63700000	USD
CY2020Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof50 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof50BasisPointsAdverseChangeinPrepaymentSpeed	-12203000	USD
CY2019Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof50 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof50BasisPointsAdverseChangeinPrepaymentSpeed	-10768000	USD
CY2020Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof100 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof100BasisPointsAdverseChangeinPrepaymentSpeed	-16062000	USD
CY2019Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof100 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof100BasisPointsAdverseChangeinPrepaymentSpeed	-17965000	USD
CY2019	tcbi	Gain Loss On Repurchase Indemnificationand Make Whole Obligations GainLossOnRepurchaseIndemnificationandMakeWholeObligations	-9000000.0	USD
CY2020Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	621000	USD
CY2019Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	3600000	USD
CY2020	tcbi	Gain Loss On Repurchase Indemnificationand Make Whole Obligations GainLossOnRepurchaseIndemnificationandMakeWholeObligations	-8400000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	67000000.0	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	82500000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	80000000.0	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	95900000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	15544000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	14844000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	19000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	19000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	4476000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	3918000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	107000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	126000	USD
CY2020	us-gaap	Lease Cost LeaseCost	19932000	USD
CY2019	us-gaap	Lease Cost LeaseCost	18655000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	16568000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	14711000	USD
CY2020	tcbi	Noncash Increase Decrease Right Of Use Asset NoncashIncreaseDecreaseRightOfUseAsset	765000	USD
CY2019	tcbi	Noncash Increase Decrease Right Of Use Asset NoncashIncreaseDecreaseRightOfUseAsset	98369000	USD
CY2020	tcbi	Noncash Increase Decrease Operating Lease Liability NoncashIncreaseDecreaseOperatingLeaseLiability	784000	USD
CY2019	tcbi	Noncash Increase Decrease Operating Lease Liability NoncashIncreaseDecreaseOperatingLeaseLiability	108189000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	833000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	87900000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y6M
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y2M12D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0274
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0275
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	17222000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	16455000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	16511000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	11754000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	5524000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	22849000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	90315000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	7786000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	82529000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2573000	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	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
CY2019Q4	us-gaap	Goodwill Gross GoodwillGross	15468000	USD
CY2019Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	374000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	15094000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	9006000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	6001000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3005000	USD
CY2019Q4	tcbi	Goodwill And Intangible Assets Gross GoodwillAndIntangibleAssetsGross	24474000	USD
CY2019Q4	tcbi	Goodwill And Intangible Assets Accumulated Amortization GoodwillAndIntangibleAssetsAccumulatedAmortization	6375000	USD
CY2019Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	18099000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	432000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	471000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	470000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	405000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	405000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	382000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	268000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	268000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	845000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2573000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	73858000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	72357000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	49312000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	41145000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	24546000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	31212000	USD
CY2020	us-gaap	Depreciation Depreciation	9500000	USD
CY2019	us-gaap	Depreciation Depreciation	9200000	USD
CY2018	us-gaap	Depreciation Depreciation	9000000.0	USD
CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	12740947000	USD
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	9438459000	USD
CY2020Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	4396243000	USD
CY2019Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	3651128000	USD
CY2020Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	11619880000	USD
CY2019Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	10517975000	USD
CY2020Q4	us-gaap	Time Deposits TimeDeposits	2239519000	USD
CY2019Q4	us-gaap	Time Deposits TimeDeposits	2871031000	USD
CY2020Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	18255642000	USD
CY2019Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	17040134000	USD
CY2020Q4	us-gaap	Deposits Deposits	30996589000	USD
CY2019Q4	us-gaap	Deposits Deposits	26478593000	USD
CY2020Q4	tcbi	Interest Bearing Time Deposit Maturities Year Two InterestBearingTimeDepositMaturitiesYearTwo	795656000	USD
CY2020Q4	tcbi	Interest Bearing Time Deposit Maturities Year Three InterestBearingTimeDepositMaturitiesYearThree	121376000	USD
CY2020Q4	tcbi	Interest Bearing Time Deposit Maturities Year Four InterestBearingTimeDepositMaturitiesYearFour	1921000	USD
CY2020Q4	tcbi	Interest Bearing Time Deposit Maturities Year One InterestBearingTimeDepositMaturitiesYearOne	1317558000	USD
CY2020Q4	tcbi	Interest Bearing Time Deposit Maturities Year Five InterestBearingTimeDepositMaturitiesYearFive	3003000	USD
CY2020Q4	tcbi	Interest Bearing Time Deposit Maturities After Year Five InterestBearingTimeDepositMaturitiesAfterYearFive	5000	USD
CY2020Q4	tcbi	Interest Bearing Time Deposits InterestBearingTimeDeposits	2239519000	USD
CY2020Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	386900000	USD
CY2019Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	347700000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	10599856000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	8964608000	USD
CY2018Q4	tcbi	Federal Reserve Borrowings Amount Of Available Unused Funds FederalReserveBorrowingsAmountOfAvailableUnusedFunds	4933965000	USD
CY2018Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	4569563000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	1030000000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	1432000000	USD
CY2018Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	620000000	USD
CY2020Q4	tcbi	Federal Reserve Borrowings Amount Of Available Unused Funds FederalReserveBorrowingsAmountOfAvailableUnusedFunds	2179000000	USD
CY2019Q4	tcbi	Federal Reserve Borrowings Amount Of Available Unused Funds FederalReserveBorrowingsAmountOfAvailableUnusedFunds	3637238000	USD
CY2020Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	130000000	USD
CY2019Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	130000000	USD
CY2018Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	130000000	USD
CY2019	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	0	USD
CY2020	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	0	USD
CY2018	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	0	USD
CY2012Q3	us-gaap	Subordinated Debt SubordinatedDebt	111000000.0	USD
CY2012Q3	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0650
CY2014Q1	us-gaap	Subordinated Debt SubordinatedDebt	175000000.0	USD
CY2014Q1	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0525
CY2019Q4	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	8640000	USD
CY2018Q4	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	11434000	USD
CY2020	tcbi	Financing Receivable Provision For Off Balance Sheet Credit Losses FinancingReceivableProvisionForOffBalanceSheetCreditLosses	8231000	USD
CY2019	tcbi	Financing Receivable Provision For Off Balance Sheet Credit Losses FinancingReceivableProvisionForOffBalanceSheetCreditLosses	-2794000	USD
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
CY2009Q4	us-gaap	Assets Assets	15000000000.0	USD
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	0.1209
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
CY2020Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	2968150000	USD
CY2020Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0752
CY2019Q4	tcbi	Common Equity Tier1 Capital CommonEquityTier1Capital	2653999000	USD
CY2019Q4	tcbi	Common Equity Tier1 Capitalto Risk Weighted Assets CommonEquityTier1CapitaltoRiskWeightedAssets	0.0888
CY2019Q4	us-gaap	Capital Capital	3398345000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1203294	shares
CY2019Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1137
CY2019Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	2912529000	USD
CY2019Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.0975
CY2019Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	2912529000	USD
CY2019Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0842
CY2020Q4	tcbi	Mortgage Finance MortgageFinance	9100000000	USD
CY2020	tcbi	Mortgage Finance Average Balance MortgageFinanceAverageBalance	9600000000	USD
CY2019Q4	tcbi	Federal Reserve Mandated Reserve Amount FederalReserveMandatedReserveAmount	283400000	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
CY2018	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	9600000	USD
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1000000.0	USD
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1000000.0	USD
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1000000.0	USD
CY2020Q4	tcbi	Share Based Compensation Arrangement By Share Based Payment Award Minimum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumEmployeeSubscriptionRate	0.01
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate	0.10
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	2550000	shares
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	26000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	36000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	62000	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
CY2018	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	9000000.0	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	32701000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	69427000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	82556000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	920000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4072000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3808000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	33621000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	73499000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	86364000	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
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-6400000	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
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7964000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10796000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6400000	USD
CY2020	tcbi	Federal Tax Expense Benefit FederalTaxExpenseBenefit	24737000	USD
CY2019	tcbi	Federal Tax Expense Benefit FederalTaxExpenseBenefit	80223000	USD
CY2018	tcbi	Federal Tax Expense Benefit FederalTaxExpenseBenefit	76156000	USD
CY2020	tcbi	State And Local Tax Expense Benefit StateAndLocalTaxExpenseBenefit	920000	USD
CY2019	tcbi	State And Local Tax Expense Benefit StateAndLocalTaxExpenseBenefit	4072000	USD
CY2018	tcbi	State And Local Tax Expense Benefit StateAndLocalTaxExpenseBenefit	3808000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25657000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	84295000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	79964000	USD
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
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	79965000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
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
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3008000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	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
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	4855000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.01
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
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	2421000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	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
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	84295000	USD
CY2019	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedCompensationPercent	0
CY2018	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Fdic Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedFDICAmount	2418000	USD
CY2018	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Fdic Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedFDICPercent	0.01
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
CY2018	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Compensation Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedCompensationAmount	400000	USD
CY2018	tcbi	Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Compensation Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDisallowedCompensationPercent	0
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
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	1449000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0
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	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.21
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	79964000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.21
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1100000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1300000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1600000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	59279000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	44383000	USD
CY2020Q4	tcbi	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	17983000	USD
CY2019Q4	tcbi	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	20894000	USD
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CY2020Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	2997000	USD
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CY2020Q4	tcbi	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	16617000	USD
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CY2020Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	22566000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	13818000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	14968000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	17602000	USD
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	16415000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	321000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	4193000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	2379000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3381000	USD
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CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	73325000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	67378000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	29207000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	21064000	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
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	10690000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	190000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	807000	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	7043000	USD
CY2020Q4	tcbi	Cash Pledged As Derivative Collateral CashPledgedAsDerivativeCollateral	108300000	USD
CY2019Q4	tcbi	Cash Pledged As Derivative Collateral CashPledgedAsDerivativeCollateral	56600000	USD
CY2020Q4	tcbi	Time Deposits From Related Parties TimeDepositsFromRelatedParties	11600000	USD
CY2019Q4	tcbi	Time Deposits From Related Parties TimeDepositsFromRelatedParties	13000000.0	USD
CY2020Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	255163000	USD
CY2020Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	243731000	USD
CY2020Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	252010000	USD
CY2020Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	306008000	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	223010000	USD
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	207569000	USD
CY2020Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	209928000	USD
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	228319000	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	191010000	USD
CY2020Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	177569000	USD
CY2020Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	109928000	USD
CY2020Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	132319000	USD
CY2020Q4	us-gaap	Noninterest Income NoninterestIncome	42886000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	60348000	USD
CY2020Q2	us-gaap	Noninterest Income NoninterestIncome	70502000	USD
CY2020Q1	us-gaap	Noninterest Income NoninterestIncome	11780000	USD
CY2020Q4	us-gaap	Noninterest Expense NoninterestExpense	150886000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	165741000	USD
CY2020Q2	us-gaap	Noninterest Expense NoninterestExpense	222352000	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
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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
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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
CY2019Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	337757000	USD
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CY2019Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	346893000	USD
CY2019Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	325561000	USD
CY2019Q4	us-gaap	Interest Expense InterestExpense	89372000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	102933000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	252168000	USD
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	243553000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	235614000	USD
CY2019Q2	us-gaap	Interest Expense InterestExpense	103340000	USD
CY2019Q1	us-gaap	Interest Expense InterestExpense	89947000	USD
CY2019Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	248385000	USD
CY2019Q4	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	17000000	USD
CY2019Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	11000000	USD
CY2019Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	27000000	USD
CY2019Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	20000000	USD
CY2019Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	231385000	USD
CY2019Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	241168000	USD
CY2019Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	216553000	USD
CY2019Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	215614000	USD
CY2019Q4	us-gaap	Noninterest Income NoninterestIncome	17761000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	20301000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	24364000	USD
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	30014000	USD
CY2019Q4	us-gaap	Noninterest Expense NoninterestExpense	168187000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	149429000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	141718000	USD
CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	141516000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	80959000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	112040000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	99199000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	104112000	USD
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16539000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23958000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21387000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22411000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	64420000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	88082000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	77812000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	81701000	USD
CY2019Q4	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
CY2019Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2438000	USD
CY2019Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
CY2019Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2438000	USD
CY2019Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	61983000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	85644000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	75375000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	79263000	USD
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.23
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.70
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.50
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.58
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.23
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.70
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.50
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.58

Files In Submission

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$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

2020 Q1 Form 10-K Financial Statement

#000107742821000013 Filed on February 09, 2021

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$TCBI TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

2020 Q1 Form 10-K Financial Statement

#000107742821000013 Filed on February 09, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi