$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

$tcbi Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000107742820000025 Filed on February 12, 2020

Income Statement

Concept	2019 Q4	2018 Q4	2018 Q3
Revenue	$337.8M	$321.7M	$301.8M
YoY Change	4.99%	28.94%	26.98%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development			$7.435M
YoY Change			23.88%
% of Gross Profit
Depreciation & Amortization	$11.50M	$7.200M	$8.600M
YoY Change	59.72%	-13.25%	17.81%
% of Gross Profit
Operating Expenses			$7.435M
YoY Change			23.88%
Operating Profit
YoY Change
Interest Expense	$89.37M	$81.05M	$69.58M
YoY Change	10.27%	108.5%	109.06%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$80.96M	$91.09M	$108.6M
YoY Change	-11.12%	-4.0%	22.61%
Income Tax	$16.54M	$19.20M	$23.00M
% Of Pretax Income	20.43%	21.08%	21.19%
Net Earnings	$64.42M	$71.89M	$85.55M
YoY Change	-10.39%	60.68%	45.78%
Net Earnings / Revenue	19.07%	22.35%	28.35%
Basic Earnings Per Share	$1.23	$1.38	$1.66
Diluted Earnings Per Share	$1.23	$1.38	$1.65
COMMON SHARES
Basic Shares Outstanding	50.32M shares	50.18M shares	50.16M shares
Diluted Shares Outstanding			50.38M shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$4.426B	$3.080B	$2.785B
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	$31.21M	$23.80M	$24.00M
YoY Change	31.13%	-5.46%	0.51%
Goodwill	$15.09M	$15.09M
YoY Change	0.0%	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	$32.55B	$28.26B	$27.13B
YoY Change	15.18%	12.69%	11.17%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$13.00M	$21.00M	$17.00M
YoY Change	-38.1%	162.5%	240.0%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$142.0M	$641.0M	$487.0M
YoY Change	-77.85%	75.62%	486.75%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$13.00M	$21.00M	$17.00M
YoY Change	-38.1%	162.5%	240.0%
LONG-TERM LIABILITIES
Long-Term Debt	$396.0M	$395.0M	$395.0M
YoY Change	0.25%	0.0%	0.0%
Other Long-Term Liabilities	$318.0M	$194.0M	$216.0M
YoY Change	63.92%	6.59%	20.67%
Total Long-Term Liabilities	$714.0M	$589.0M	$611.0M
YoY Change	21.22%	2.08%	6.45%
TOTAL LIABILITIES
Total Short-Term Liabilities	$13.00M	$21.00M	$17.00M
Total Long-Term Liabilities	$714.0M	$589.0M	$611.0M
Total Liabilities	$29.75B	$25.78B	$24.70B
YoY Change	15.4%	12.64%	11.05%
SHAREHOLDERS EQUITY
Retained Earnings	$1.664B	$1.361B	$1.312B
YoY Change	22.2%	26.31%	25.17%
Common Stock	$503.0K	$502.0K	$502.0K
YoY Change	0.2%	1.21%	1.21%
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	$2.801B	$2.480B	$2.426B
YoY Change
Total Liabilities & Shareholders Equity	$32.55B	$28.26B	$27.13B
YoY Change	15.18%	12.69%	11.17%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	$64.42M	$71.89M	$85.55M
YoY Change	-10.39%	60.68%	45.78%
Depreciation, Depletion And Amortization	$11.50M	$7.200M	$8.600M
YoY Change	59.72%	-13.25%	17.81%
Cash From Operating Activities	$189.4M	-$268.6M	-$242.2M
YoY Change	-170.51%	2788.17%	397.33%
INVESTING ACTIVITIES
Capital Expenditures	-$1.700M	-$2.000M	-$500.0K
YoY Change	-15.0%	-37.5%	-89.8%
Acquisitions
YoY Change
Other Investing Activities	$63.70M	-$506.8M	$351.4M
YoY Change	-112.57%	148.8%	-138.1%
Cash From Investing Activities	$62.00M	-$508.8M	$351.0M
YoY Change	-112.19%	145.92%	-137.86%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-1.035B	1.072B	-786.5M
YoY Change	-196.52%	72.77%	-165.16%
NET CHANGE
Cash From Operating Activities	189.4M	-268.6M	-242.2M
Cash From Investing Activities	62.00M	-508.8M	351.0M
Cash From Financing Activities	-1.035B	1.072B	-786.5M
Net Change In Cash	-783.7M	295.0M	-677.7M
YoY Change	-365.66%	-27.07%	-392.87%
FREE CASH FLOW
Cash From Operating Activities	$189.4M	-$268.6M	-$242.2M
Capital Expenditures	-$1.700M	-$2.000M	-$500.0K
Free Cash Flow	$191.1M	-$266.6M	-$241.7M
YoY Change	-171.68%	4270.49%	451.83%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
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CY2019	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	20093000	USD
CY2018	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	24307000	USD
CY2017	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	23510000	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
CY2017	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	15506000	USD
CY2019	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	7000	USD
CY2018	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	474000	USD
CY2017	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	6437000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	47246000	USD
CY2018	us-gaap	Other Noninterest Expense OtherNoninterestExpense	50890000	USD
CY2017	us-gaap	Other Noninterest Expense OtherNoninterestExpense	42859000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	589999000	USD
CY2018	us-gaap	Noninterest Expense NoninterestExpense	525096000	USD
CY2017	us-gaap	Noninterest Expense NoninterestExpense	465876000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	407161000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	380788000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	325708000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	84295000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	79964000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	128645000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	322866000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	300824000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	197063000	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
CY2017	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	9750000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	313116000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	291074000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	187313000	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
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	19000	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
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	6000	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
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	13000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	331298000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	300830000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	197076000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.23
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.83
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.78
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.21
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.79
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.73
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	2009557000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	197063000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	13000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	197076000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8079000	USD
CY2017	us-gaap	Dividends Preferred Stock DividendsPreferredStock	9750000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-2241000	USD
CY2017	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	0	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	2202721000	USD
CY2018Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	2000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	300824000	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	300830000	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	2500394000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	322866000	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	331298000	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
CY2018	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	0	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2832258000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	322866000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	300824000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	197063000	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
CY2017	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	44000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10796000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6400000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	31276000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	37267000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	32022000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	27871000	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
CY2017	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-2387000	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
CY2017	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	2823000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	17604000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	16938000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	22019000	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
CY2017	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	5556964000	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
CY2017	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	5457117000	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
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	105720000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	87884000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-5026000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	10289000	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
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	132161000	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
CY2017	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	97776000	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
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	94775000	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
CY2017	tcbi	Principal Payments Received On Available For Sale Securities PrincipalPaymentsReceivedOnAvailableForSaleSecurities	4383000	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
CY2017	tcbi	Payments For Originations Of Mortgage Finance Loans PaymentsForOriginationsOfMortgageFinanceLoans	86931566000	USD
CY2017	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	9750000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-1500000000	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
CY2017	tcbi	Proceeds From Sale And Collection Of Mortgage Finance Loans ProceedsFromSaleAndCollectionOfMortgageFinanceLoans	86120744000	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
CY2017	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	2395063000	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
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	12265000	USD
CY2019	tcbi	Servicing Assets Capitalized ServicingAssetsCapitalized	0	USD
CY2018	tcbi	Servicing Assets Capitalized ServicingAssetsCapitalized	70824000	USD
CY2017	tcbi	Servicing Assets Capitalized ServicingAssetsCapitalized	0	USD
CY2019	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	79000	USD
CY2018	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	13645000	USD
CY2017	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	1023000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2276077000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1992746000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3215745000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	5872480000	USD
CY2018	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1482933000	USD
CY2017	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	2106349000	USD
CY2019	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1459000	USD
CY2018	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	2382000	USD
CY2017	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	2241000	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
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	1100000000	USD
CY2017	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	800000000	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
CY2017	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	-255465000	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
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3149823000	USD
CY2019	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	1345518000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	174474000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	66239000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3080065000	USD
CY2018Q4	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
CY2018Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2438000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2905591000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2839352000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4425583000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3080065000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2905591000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	393507000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	236338000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	115789000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	89967000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	75405000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	103871000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-top:12px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Use of Estimates</span></div><div style="line-height:120%;padding-top:6px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates. The allowance for loan losses, the fair value of financial instruments and the status of contingencies are particularly susceptible to significant change.</span></div>
CY2019	us-gaap	Guarantees Indemnifications And Warranties Policies GuaranteesIndemnificationsAndWarrantiesPolicies	<div style="line-height:120%;padding-top:12px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Financial Instruments with Off-Balance Sheet Risk</span></div><div style="line-height:120%;padding-top:6px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">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="line-height:120%;padding-top:6px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">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="line-height:120%;padding-top:6px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">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="line-height:120%;padding-top:6px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">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="line-height:120%;padding-top:6px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">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 and repurchase 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="line-height:120%;padding-top:6px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">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>
CY2019	us-gaap	Net Income Loss NetIncomeLoss	322866000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	300824000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	197063000	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
CY2017	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	9750000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	313116000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	291074000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	187313000	USD
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
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	49587169	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	132904	shares
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
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	102392000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	654000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	0	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	103046000	USD
CY2019	us-gaap	Assumption For Fair Value On Securitization Date Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Expected Credit Losses AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesExpectedCreditLosses	0.50
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	218275	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	239008	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
CY2017	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	433657	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
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50259834	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.23
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.83
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.78
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.21
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.79
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.73
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
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	13500	shares
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	202929000	USD
CY2019Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	202929000	USD
CY2019Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	214257000	USD
CY2018Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	102392000	USD
CY2018Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	103046000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019Q4	us-gaap	Available For Sale Securities Equity Securities AvailableForSaleSecuritiesEquitySecurities	25600000	USD
CY2018Q4	us-gaap	Available For Sale Securities Equity Securities AvailableForSaleSecuritiesEquitySecurities	17200000	USD
CY2019	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	2383000	USD
CY2018	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-975000	USD
CY2019	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	-119000	USD
CY2018	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	-460000	USD
CY2019	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	2264000	USD
CY2018	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-1435000	USD
CY2019Q4	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	10230828000	USD
CY2018Q4	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	10373288000	USD
CY2019Q4	tcbi	Mortgage Finance MortgageFinance	8169849000	USD
CY2018Q4	tcbi	Mortgage Finance MortgageFinance	5877524000	USD
CY2019Q4	us-gaap	Loans Receivable Commercial Construction LoansReceivableCommercialConstruction	2563339000	USD
CY2018Q4	us-gaap	Loans Receivable Commercial Construction LoansReceivableCommercialConstruction	2120966000	USD
CY2019Q4	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	3444701000	USD
CY2018Q4	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	3929117000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Consumer Real Estate LoansAndLeasesReceivableConsumerRealEstate	71463000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Consumer Real Estate LoansAndLeasesReceivableConsumerRealEstate	63438000	USD
CY2019Q4	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	256462000	USD
CY2018Q4	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	312191000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	24736642000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	22676524000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	90380000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	108450000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	195047000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	191522000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	24451215000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	22376552000	USD
CY2019Q4	us-gaap	Participating Mortgage Loans Mortgage Obligations Amount ParticipatingMortgageLoansMortgageObligationsAmount	682700000	USD
CY2018Q4	us-gaap	Participating Mortgage Loans Mortgage Obligations Amount ParticipatingMortgageLoansMortgageObligationsAmount	193000000.0	USD
CY2019Q4	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	10230828000	USD
CY2019Q4	tcbi	Mortgage Finance MortgageFinance	8169849000	USD
CY2019Q4	us-gaap	Loans Receivable Commercial Construction LoansReceivableCommercialConstruction	2563339000	USD
CY2019Q4	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	3444701000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Consumer Real Estate LoansAndLeasesReceivableConsumerRealEstate	71463000	USD
CY2019Q4	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	256462000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	24736642000	USD
CY2018Q4	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	10373288000	USD
CY2018Q4	tcbi	Mortgage Finance MortgageFinance	5877524000	USD
CY2018Q4	us-gaap	Loans Receivable Commercial Construction LoansReceivableCommercialConstruction	2120966000	USD
CY2018Q4	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	3929117000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Consumer Real Estate LoansAndLeasesReceivableConsumerRealEstate	63438000	USD
CY2018Q4	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	312191000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	22676524000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	191522000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	77794000	USD
CY2019	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	77639000	USD
CY2019	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	3370000	USD
CY2019	us-gaap	Allowance For Loan And Lease Losses Writeoffs Net AllowanceForLoanAndLeaseLossesWriteoffsNet	74269000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	195047000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	60424000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	134623000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	195047000	USD
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	225384000	USD
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	24511258000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	24736642000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	184655000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	84637000	USD
CY2018	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	80778000	USD
CY2018	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	3008000	USD
CY2018	us-gaap	Allowance For Loan And Lease Losses Writeoffs Net AllowanceForLoanAndLeaseLossesWriteoffsNet	77770000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	191522000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	8310000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	183212000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	191522000	USD
CY2018Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	87340000	USD
CY2018Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	22589184000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	22676524000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	104253000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	120596000	USD
CY2019	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	47072000	USD
CY2019	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod	0	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	121131000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	143814000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	60424000	USD
CY2019	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	81477000	USD
CY2019	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod	0	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	225384000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	264410000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	60424000	USD
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	128549000	USD
CY2019	us-gaap	Loans And Leases Receivable Impaired Interest Income Recognized Change In Present Value Attributable To Passage Of Time LoansAndLeasesReceivableImpairedInterestIncomeRecognizedChangeInPresentValueAttributableToPassageOfTime	0	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	44176000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	76992000	USD
CY2018	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	37510000	USD
CY2018	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod	133000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	43164000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	45960000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	8310000	USD
CY2018	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	67628000	USD
CY2018	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod	0	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	87340000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	122952000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	8310000	USD
CY2018	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	105138000	USD
CY2018	us-gaap	Loans And Leases Receivable Impaired Interest Income Recognized Change In Present Value Attributable To Passage Of Time LoansAndLeasesReceivableImpairedInterestIncomeRecognizedChangeInPresentValueAttributableToPassageOfTime	133000	USD
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	128500000	USD
CY2018	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	105100000	USD
CY2017	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	130800000	USD
CY2019	us-gaap	Loans And Leases Receivable Impaired Interest Income Recognized Change In Present Value Attributable To Passage Of Time LoansAndLeasesReceivableImpairedInterestIncomeRecognizedChangeInPresentValueAttributableToPassageOfTime	0	USD
CY2018	us-gaap	Loans And Leases Receivable Impaired Interest Income Recognized Change In Present Value Attributable To Passage Of Time LoansAndLeasesReceivableImpairedInterestIncomeRecognizedChangeInPresentValueAttributableToPassageOfTime	133000	USD
CY2017	us-gaap	Loans And Leases Receivable Impaired Interest Income Recognized Change In Present Value Attributable To Passage Of Time LoansAndLeasesReceivableImpairedInterestIncomeRecognizedChangeInPresentValueAttributableToPassageOfTime	6000	USD
CY2019	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	12000000.0	USD
CY2018	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	8500000	USD
CY2017	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	19000000.0	USD
CY2019Q4	tcbi	Nonaccrual Loans Earning On Cash Basis NonaccrualLoansEarningOnCashBasis	0	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	47709000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	225384000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	24463549000	USD
CY2019Q4	tcbi	Loans And Leases Receivable Gross Carrying Amount Excluding Nonaccrual LoansAndLeasesReceivableGrossCarryingAmountExcludingNonaccrual	24736642000	USD
CY2019Q4	tcbi	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing Premium Finance Loans FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruingPremiumFinanceLoans	8500000	USD
CY2019Q4	tcbi	Financing Receivable Modifications Non Accrual Loans Met Criteria For Restrucutred FinancingReceivableModificationsNonAccrualLoansMetCriteriaForRestrucutred	35100000	USD
CY2018Q4	tcbi	Financing Receivable Modifications Non Accrual Loans Met Criteria For Restrucutred FinancingReceivableModificationsNonAccrualLoansMetCriteriaForRestrucutred	20000000.0	USD
CY2019	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	5	contract
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	26881000	USD
CY2018	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	7	contract
CY2018Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	12458000	USD
CY2018Q4	us-gaap	Other Real Estate OtherRealEstate	79000	USD
CY2017Q4	us-gaap	Other Real Estate OtherRealEstate	11742000	USD
CY2016Q4	us-gaap	Other Real Estate OtherRealEstate	18961000	USD
CY2019	us-gaap	Other Real Estate Additions OtherRealEstateAdditions	0	USD
CY2018	us-gaap	Other Real Estate Additions OtherRealEstateAdditions	0	USD
CY2017	us-gaap	Other Real Estate Additions OtherRealEstateAdditions	0	USD
CY2019	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	79000	USD
CY2018	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	11663000	USD
CY2017	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	1108000	USD
CY2019	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	0	USD
CY2018	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	0	USD
CY2017	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	0	USD
CY2019	tcbi	Real Estate Acquired Through Foreclosure Direct Write Offs RealEstateAcquiredThroughForeclosureDirectWriteOffs	0	USD
CY2018	tcbi	Real Estate Acquired Through Foreclosure Direct Write Offs RealEstateAcquiredThroughForeclosureDirectWriteOffs	0	USD
CY2017	tcbi	Real Estate Acquired Through Foreclosure Direct Write Offs RealEstateAcquiredThroughForeclosureDirectWriteOffs	6111000	USD
CY2019Q4	us-gaap	Other Real Estate OtherRealEstate	0	USD
CY2018Q4	us-gaap	Other Real Estate OtherRealEstate	79000	USD
CY2017Q4	us-gaap	Other Real Estate OtherRealEstate	11742000	USD
CY2018	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	6100000	USD
CY2018	us-gaap	Real Estate Owned Valuation Allowance Period Increase Decrease RealEstateOwnedValuationAllowancePeriodIncreaseDecrease	-2000000.0	USD
CY2018Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1949785000	USD
CY2017Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1012580000	USD
CY2019	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Additions To Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowAdditionsToHeldForSale	10183057000	USD
CY2018	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Additions To Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowAdditionsToHeldForSale	6753709000	USD
CY2019	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Deductions From Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowDeductionsFromHeldForSale	9564480000	USD
CY2018	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Deductions From Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowDeductionsFromHeldForSale	5816504000	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
CY2018Q4	tcbi	Loans Held For Sale Fair Value Over Under Principal Amount Outstanding LoansHeldForSaleFairValueOverUnderPrincipalAmountOutstanding	19689000	USD
CY2017Q4	tcbi	Loans Held For Sale Fair Value Over Under Principal Amount Outstanding LoansHeldForSaleFairValueOverUnderPrincipalAmountOutstanding	-1576000	USD
CY2019	tcbi	Loans Receivable Heldforsale Increase Decreasein Fair Value LoansReceivableHeldforsaleIncreaseDecreaseinFairValue	-10917000	USD
CY2018	tcbi	Loans Receivable Heldforsale Increase Decreasein Fair Value LoansReceivableHeldforsaleIncreaseDecreaseinFairValue	21265000	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
CY2019Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	2577134000	USD
CY2018Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	1969474000	USD
CY2019Q4	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	6700000000	USD
CY2018Q4	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	3900000000	USD
CY2019Q4	us-gaap	Escrow Deposit EscrowDeposit	63700000	USD
CY2018Q4	us-gaap	Escrow Deposit EscrowDeposit	37900000	USD
CY2019Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof50 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof50BasisPointsAdverseChangeinPrepaymentSpeed	-10768000	USD
CY2018Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof50 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof50BasisPointsAdverseChangeinPrepaymentSpeed	-6028000	USD
CY2019Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof100 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof100BasisPointsAdverseChangeinPrepaymentSpeed	-17965000	USD
CY2018Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof100 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof100BasisPointsAdverseChangeinPrepaymentSpeed	-11629000	USD
CY2019Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	3600000	USD
CY2018Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	1600000	USD
CY2019	tcbi	Gain Loss On Repurchase Indemnificationand Make Whole Obligations GainLossOnRepurchaseIndemnificationandMakeWholeObligations	-9000000.0	USD
CY2018	tcbi	Gain Loss On Repurchase Indemnificationand Make Whole Obligations GainLossOnRepurchaseIndemnificationandMakeWholeObligations	-258000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	80000000.0	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	95900000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	14844000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	19000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	16586000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	3918000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	126000	USD
CY2019	us-gaap	Lease Cost LeaseCost	18656000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	14711000	USD
CY2019	tcbi	Noncash Increase Decrease Right Of Use Asset NoncashIncreaseDecreaseRightOfUseAsset	98369000	USD
CY2019	tcbi	Noncash Increase Decrease Operating Lease Liability NoncashIncreaseDecreaseOperatingLeaseLiability	108189000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	87900000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y2M12D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0275
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	17136000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	16338000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	16377000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	11619000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	28018000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	106074000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	10187000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	95887000	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 Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	432000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	405000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	405000	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
CY2018Q4	us-gaap	Goodwill Gross GoodwillGross	15468000	USD
CY2018Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	374000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	15094000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	9006000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	5530000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3476000	USD
CY2018Q4	tcbi	Goodwill And Intangible Assets Gross GoodwillAndIntangibleAssetsGross	24474000	USD
CY2018Q4	tcbi	Goodwill And Intangible Assets Accumulated Amortization GoodwillAndIntangibleAssetsAccumulatedAmortization	5904000	USD
CY2018Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	18570000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	471000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	470000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	472000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	382000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	268000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	1113000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3005000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	72357000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	63129000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	41145000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	39327000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	31212000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	23802000	USD
CY2019	us-gaap	Depreciation Depreciation	9200000	USD
CY2018	us-gaap	Depreciation Depreciation	9000000.0	USD
CY2017	us-gaap	Depreciation Depreciation	6900000	USD
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	9438459000	USD
CY2018Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	7317161000	USD
CY2019Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	3651128000	USD
CY2018Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	3051535000	USD
CY2019Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	10517975000	USD
CY2018Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	8222893000	USD
CY2019Q4	us-gaap	Time Deposits TimeDeposits	2871031000	USD
CY2018Q4	us-gaap	Time Deposits TimeDeposits	2014524000	USD
CY2019Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	17040134000	USD
CY2018Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	13288952000	USD
CY2019Q4	us-gaap	Deposits Deposits	26478593000	USD
CY2018Q4	us-gaap	Deposits Deposits	20606113000	USD
CY2018Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	270200000	USD
CY2019Q4	tcbi	Interest Bearing Time Deposit Maturities After Year Five InterestBearingTimeDepositMaturitiesAfterYearFive	2855000	USD
CY2019Q4	tcbi	Interest Bearing Time Deposits InterestBearingTimeDeposits	2871031000	USD
CY2019Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	347700000	USD
CY2012Q3	us-gaap	Subordinated Debt SubordinatedDebt	111000000.0	USD
CY2012Q3	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0650
CY2019Q4	tcbi	Interest Bearing Time Deposit Maturities Year One InterestBearingTimeDepositMaturitiesYearOne	2810219000	USD
CY2019Q4	tcbi	Interest Bearing Time Deposit Maturities Year Two InterestBearingTimeDepositMaturitiesYearTwo	49275000	USD
CY2019Q4	tcbi	Interest Bearing Time Deposit Maturities Year Three InterestBearingTimeDepositMaturitiesYearThree	6648000	USD
CY2019Q4	tcbi	Interest Bearing Time Deposit Maturities Year Four InterestBearingTimeDepositMaturitiesYearFour	271000	USD
CY2019Q4	tcbi	Interest Bearing Time Deposit Maturities Year Five InterestBearingTimeDepositMaturitiesYearFive	1763000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	8964608000	USD
CY2018Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	4569563000	USD
CY2017Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	3893066000	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
CY2017Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	885000000	USD
CY2019Q4	tcbi	Federal Reserve Borrowings Amount Of Available Unused Funds FederalReserveBorrowingsAmountOfAvailableUnusedFunds	3637238000	USD
CY2018Q4	tcbi	Federal Reserve Borrowings Amount Of Available Unused Funds FederalReserveBorrowingsAmountOfAvailableUnusedFunds	4933965000	USD
CY2017Q4	tcbi	Federal Reserve Borrowings Amount Of Available Unused Funds FederalReserveBorrowingsAmountOfAvailableUnusedFunds	4114594000	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
CY2017Q4	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
CY2014Q1	us-gaap	Subordinated Debt SubordinatedDebt	175000000.0	USD
CY2014Q1	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0525
CY2018Q4	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	11434000	USD
CY2017Q4	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	9071000	USD
CY2019	tcbi	Financing Receivable Provision For Off Balance Sheet Credit Losses FinancingReceivableProvisionForOffBalanceSheetCreditLosses	-2794000	USD
CY2018	tcbi	Financing Receivable Provision For Off Balance Sheet Credit Losses FinancingReceivableProvisionForOffBalanceSheetCreditLosses	2363000	USD
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
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
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
CY2018Q4	tcbi	Common Equity Tier1 Capital CommonEquityTier1Capital	2330599000	USD
CY2018Q4	tcbi	Common Equity Tier1 Capitalto Risk Weighted Assets CommonEquityTier1CapitaltoRiskWeightedAssets	0.0858
CY2018Q4	us-gaap	Capital Capital	3074097000	USD
CY2018Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1131
CY2018Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	2589374000	USD
CY2018Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.0953
CY2018Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	2589374000	USD
CY2018Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0987
CY2019Q4	tcbi	Mortgage Finance MortgageFinance	8200000000	USD
CY2019	tcbi	Mortgage Finance Average Balance MortgageFinanceAverageBalance	7900000000	USD
CY2019Q4	tcbi	Federal Reserve Mandated Reserve Amount FederalReserveMandatedReserveAmount	283400000	USD
CY2018Q4	tcbi	Federal Reserve Mandated Reserve Amount FederalReserveMandatedReserveAmount	157700000	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
CY2017	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	8400000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1000000.0	USD
CY2017	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	260000	USD
CY2019Q4	tcbi	Share Based Compensation Arrangement By Share Based Payment Award Minimum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumEmployeeSubscriptionRate	0.01
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate	0.10
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	2550000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1772070	shares
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11733000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions	25305000	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
CY2017	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	8100000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	69427000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	82556000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	94112000	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
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3257000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	73499000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	86364000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	79964000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.01
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	97369000	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
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	31276000	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
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10796000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6400000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	31276000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	80223000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	76156000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	125388000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4072000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3808000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3257000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	84295000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	128645000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.01
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.01
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.01
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.01
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.01
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.05
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.01
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.01
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.01
CY2018Q4	tcbi	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	10638000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	11328000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3605000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3363000	USD
CY2019Q4	tcbi	Deferred Tax Assets Non Accrual Interest DeferredTaxAssetsNonAccrualInterest	2351000	USD
CY2018Q4	tcbi	Deferred Tax Assets Non Accrual Interest DeferredTaxAssetsNonAccrualInterest	1724000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	4027000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.01
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.01
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.01
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.21
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.21
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.40
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	44383000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	44224000	USD
CY2019Q4	tcbi	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	20894000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	2211000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2544000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2517000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	88442000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	65367000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	2686000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	2049000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	7912000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	9000000	USD
CY2019Q4	tcbi	Deferred Tax Liabilities Operating Lease Right Of Use Asset DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset	19644000	USD
CY2018Q4	tcbi	Deferred Tax Liabilities Operating Lease Right Of Use Asset DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	13818000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	9184000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	17602000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	8233000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	2379000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	138000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3337000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2662000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	67378000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	31266000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	21064000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	34101000	USD
CY2019Q4	tcbi	Cash Pledged As Derivative Collateral CashPledgedAsDerivativeCollateral	56600000	USD
CY2018Q4	tcbi	Cash Pledged As Derivative Collateral CashPledgedAsDerivativeCollateral	25300000	USD
CY2019Q4	tcbi	Time Deposits From Related Parties TimeDepositsFromRelatedParties	13000000.0	USD
CY2018Q4	tcbi	Time Deposits From Related Parties TimeDepositsFromRelatedParties	13500000	USD
CY2019Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	337757000	USD
CY2019Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	355101000	USD
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
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
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
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	Earnings Per Share Diluted EarningsPerShareDiluted	1.60
CY2019Q4	us-gaap	Noninterest Expense NoninterestExpense	158690000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	149370000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	141561000	USD
CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	140378000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	90456000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	112099000	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
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	99356000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	105250000	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	73917000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	88141000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	77969000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	82839000	USD
CY2019Q4	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
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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	71480000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	85703000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	75532000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	80401000	USD
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.42
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CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.70
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CY2018Q2	us-gaap	Noninterest Expense NoninterestExpense	132131000	USD
CY2018Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	27000000	USD
CY2018Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	321718000	USD
CY2018Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	301754000	USD
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CY2018Q3	us-gaap	Interest Expense InterestExpense	69579000	USD
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CY2018Q1	us-gaap	Interest Expense InterestExpense	43569000	USD
CY2018Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	240673000	USD
CY2018Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	232175000	USD
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	231712000	USD
CY2018Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	210300000	USD
CY2018Q4	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	35000000	USD
CY2018Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	13000000	USD
CY2018Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	12000000	USD
CY2018Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	205673000	USD
CY2018Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	219175000	USD
CY2018Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	204712000	USD
CY2018Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	198300000	USD
CY2018Q4	us-gaap	Noninterest Income NoninterestIncome	15280000	USD
CY2018Q3	us-gaap	Noninterest Income NoninterestIncome	25518000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	17279000	USD
CY2018Q1	us-gaap	Noninterest Income NoninterestIncome	19947000	USD
CY2018Q4	us-gaap	Noninterest Expense NoninterestExpense	129862000	USD
CY2018Q3	us-gaap	Noninterest Expense NoninterestExpense	136143000	USD
CY2018Q1	us-gaap	Noninterest Expense NoninterestExpense	126960000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	91091000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	108550000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	89860000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	91287000	USD
CY2018Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19200000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22998000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18424000	USD
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19342000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	71891000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	85552000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	71436000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	71945000	USD
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.39
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.40
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.38
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.65
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.38
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.38
CY2018Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
CY2018Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2438000	USD
CY2018Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	69454000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	83114000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	68999000	USD
CY2018Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	69507000	USD
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.38
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.66

Files In Submission

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$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

2019 Q4 Form 10-K Financial Statement

#000107742820000025 Filed on February 12, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBI TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

2019 Q4 Form 10-K Financial Statement

#000107742820000025 Filed on February 12, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi