$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

$tcbi Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-Q Financial Statement

#000107742819000099 Filed on October 17, 2019

Income Statement

Concept	2019 Q4	2019 Q3	2018 Q3
Revenue	$337.8M	$355.1M	$301.8M
YoY Change	4.99%	17.68%	26.98%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development		$10.81M	$7.435M
YoY Change		45.33%	23.88%
% of Gross Profit
Depreciation & Amortization	$11.50M	$9.900M	$8.600M
YoY Change	59.72%	15.12%	17.81%
% of Gross Profit
Operating Expenses		$10.81M	$7.435M
YoY Change		45.33%	23.88%
Operating Profit
YoY Change
Interest Expense	$89.37M	$102.9M	$69.58M
YoY Change	10.27%	47.94%	109.06%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$80.96M	$112.0M	$108.6M
YoY Change	-11.12%	3.22%	22.61%
Income Tax	$16.54M	$23.96M	$23.00M
% Of Pretax Income	20.43%	21.38%	21.19%
Net Earnings	$64.42M	$88.08M	$85.55M
YoY Change	-10.39%	2.96%	45.78%
Net Earnings / Revenue	19.07%	24.8%	28.35%
Basic Earnings Per Share	$1.23	$1.70	$1.66
Diluted Earnings Per Share	$1.23	$1.70	$1.65
COMMON SHARES
Basic Shares Outstanding	50.32M shares	50.31M shares	50.16M shares
Diluted Shares Outstanding		50.42M shares	50.38M shares

Balance Sheet

Concept	2019 Q4	2019 Q3	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$4.426B	$5.209B	$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	$32.67M	$24.00M
YoY Change	31.13%	36.09%	0.51%
Goodwill	$15.09M
YoY Change	0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$32.55B	$33.53B	$27.13B
YoY Change	15.18%	23.59%	11.17%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$13.00M	$34.00M	$17.00M
YoY Change	-38.1%	100.0%	240.0%
Accrued Expenses		$98.00M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$142.0M	$140.0M	$487.0M
YoY Change	-77.85%	-71.25%	486.75%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$13.00M	$132.0M	$17.00M
YoY Change	-38.1%	676.47%	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	$188.0M	$216.0M
YoY Change	63.92%	-12.96%	20.67%
Total Long-Term Liabilities	$714.0M	$583.0M	$611.0M
YoY Change	21.22%	-4.58%	6.45%
TOTAL LIABILITIES
Total Short-Term Liabilities	$13.00M	$132.0M	$17.00M
Total Long-Term Liabilities	$714.0M	$583.0M	$611.0M
Total Liabilities	$29.75B	$30.77B	$24.70B
YoY Change	15.4%	24.57%	11.05%
SHAREHOLDERS EQUITY
Retained Earnings	$1.664B	$1.602B	$1.312B
YoY Change	22.2%	22.08%	25.17%
Common Stock	$503.0K	$503.0K	$502.0K
YoY Change	0.2%	0.2%	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	$2.736B	$2.426B
YoY Change
Total Liabilities & Shareholders Equity	$32.55B	$33.53B	$27.13B
YoY Change	15.18%	23.59%	11.17%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2018 Q3
OPERATING ACTIVITIES
Net Income	$64.42M	$88.08M	$85.55M
YoY Change	-10.39%	2.96%	45.78%
Depreciation, Depletion And Amortization	$11.50M	$9.900M	$8.600M
YoY Change	59.72%	15.12%	17.81%
Cash From Operating Activities	$189.4M	-$1.456B	-$242.2M
YoY Change	-170.51%	500.95%	397.33%
INVESTING ACTIVITIES
Capital Expenditures	-$1.700M	-$6.200M	-$500.0K
YoY Change	-15.0%	1140.0%	-89.8%
Acquisitions
YoY Change
Other Investing Activities	$63.70M	-$417.6M	$351.4M
YoY Change	-112.57%	-218.84%	-138.1%
Cash From Investing Activities	$62.00M	-$423.9M	$351.0M
YoY Change	-112.19%	-220.77%	-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	3.444B	-786.5M
YoY Change	-196.52%	-537.9%	-165.16%
NET CHANGE
Cash From Operating Activities	189.4M	-1.456B	-242.2M
Cash From Investing Activities	62.00M	-423.9M	351.0M
Cash From Financing Activities	-1.035B	3.444B	-786.5M
Net Change In Cash	-783.7M	1.565B	-677.7M
YoY Change	-365.66%	-330.88%	-392.87%
FREE CASH FLOW
Cash From Operating Activities	$189.4M	-$1.456B	-$242.2M
Capital Expenditures	-$1.700M	-$6.200M	-$500.0K
Free Cash Flow	$191.1M	-$1.449B	-$241.7M
YoY Change	-171.68%	499.63%	451.83%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Entity Central Index Key EntityCentralIndexKey	0001077428
	dei	Entity Registrant Name EntityRegistrantName	TEXAS CAPITAL BANCSHARES INC/TX
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
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CY2019Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
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CY2018Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	1969200000	USD
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CY2018Q4	us-gaap	Preferred Stock Liquidation Preference Value PreferredStockLiquidationPreferenceValue	1000	USD
CY2019Q3	us-gaap	Preferred Stock Liquidation Preference Value PreferredStockLiquidationPreferenceValue	1000	USD
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CY2019Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	6000000	shares
	dei	Entity Address City Or Town EntityAddressCityOrTown	Dallas
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	417	shares
CY2019Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	417	shares
CY2018Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	1600000	USD
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-34657
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	75-2679109
	dei	Entity Address Address Line1 EntityAddressAddressLine1	2000 McKinney Avenue
	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 700
	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
	dei	Entity Address Country EntityAddressCountry	US
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	75201
	dei	City Area Code CityAreaCode	214
	dei	Local Phone Number LocalPhoneNumber	932-6600
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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	us-gaap	Noninterest Income NoninterestIncome	74679000	USD
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	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	-12502000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	-7847000	USD
CY2019Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	7839000	USD
CY2018Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	7937000	USD
	us-gaap	Noninterest Income Other NoninterestIncomeOther	38848000	USD
CY2018Q3	us-gaap	Noninterest Income NoninterestIncome	25518000	USD
	us-gaap	Noninterest Income NoninterestIncome	62744000	USD
CY2019Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	80106000	USD
CY2018Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	77327000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	234818000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	222268000	USD
CY2019Q3	us-gaap	Occupancy Net OccupancyNet	8125000	USD
CY2018Q3	us-gaap	Occupancy Net OccupancyNet	8362000	USD
	us-gaap	Occupancy Net OccupancyNet	23914000	USD
	us-gaap	Occupancy Net OccupancyNet	22952000	USD
CY2019Q3	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	14753000	USD
CY2018Q3	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	10214000	USD
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	40548000	USD
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	29127000	USD
CY2019Q3	us-gaap	Professional Fees ProfessionalFees	11394000	USD
CY2018Q3	us-gaap	Professional Fees ProfessionalFees	10764000	USD
	us-gaap	Professional Fees ProfessionalFees	31428000	USD
	us-gaap	Professional Fees ProfessionalFees	29948000	USD
CY2019Q3	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	10805000	USD
CY2018Q3	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	7435000	USD
	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	31025000	USD
	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	21211000	USD
CY2019Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	5220000	USD
CY2018Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	6524000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	14480000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	18884000	USD
CY2019Q3	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	8165000	USD
CY2018Q3	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	4207000	USD
	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	19613000	USD
	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	12379000	USD
CY2019Q3	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	2000	USD
CY2018Q3	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	-1864000	USD
	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	2000	USD
	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	467000	USD
CY2019Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10800000	USD
CY2018Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	13174000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	35481000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	37998000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	149370000	USD
CY2018Q3	us-gaap	Noninterest Expense NoninterestExpense	136143000	USD
	us-gaap	Noninterest Expense NoninterestExpense	431309000	USD
	us-gaap	Noninterest Expense NoninterestExpense	395234000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	112099000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	108550000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	316705000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	289697000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23958000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22998000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	67756000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	60764000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	88141000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	85552000	USD
	us-gaap	Net Income Loss NetIncomeLoss	248949000	USD
	us-gaap	Net Income Loss NetIncomeLoss	228933000	USD
CY2019Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2438000	USD
CY2018Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2438000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	7313000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	7313000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	85703000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	83114000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	241636000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	221620000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	884000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-2223000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	10752000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-2390000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	186000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-467000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	2259000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-502000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	698000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-1756000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	8493000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-1888000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	88839000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	83796000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	257442000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	227045000	USD
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.70
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.66
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.81
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.45
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.70
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.65
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.80
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.41
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	2343530000	USD
CY2018Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	2000	USD
	us-gaap	Net Income Loss NetIncomeLoss	228933000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-1888000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	85552000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-1756000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	83796000	USD
CY2018Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2292000	USD
CY2018Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	2438000	USD
CY2018Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-738000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	2426442000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	2668452000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	88141000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	698000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	88839000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3023000	USD
CY2019Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	2438000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-443000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	2757433000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	2202721000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	227045000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6383000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	7313000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-2396000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	2426442000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2500394000	USD
	us-gaap	Net Income Loss NetIncomeLoss	248949000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	8493000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	257442000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8565000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	7313000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1655000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	2757433000	USD
	us-gaap	Net Income Loss NetIncomeLoss	248949000	USD
	us-gaap	Net Income Loss NetIncomeLoss	228933000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	58000000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	52000000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	25754000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	24776000	USD
	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-12502000	USD
	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-7847000	USD
	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	8360000	USD
	tcbi	Principal Payments Received On Available For Sale Securities PrincipalPaymentsReceivedOnAvailableForSaleSecurities	2998000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	80731000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	114282000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	33920000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-429596000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-411148000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	111131000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	99295000	USD
	tcbi	Principal Payments Received On Available For Sale Securities PrincipalPaymentsReceivedOnAvailableForSaleSecurities	5534000	USD
	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	-2823000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	12973000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	15633000	USD
	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	7288823000	USD
	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	5012188000	USD
	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	6534879000	USD
	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	4321485000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	156472000	USD
	tcbi	Payments For Originations Of Mortgage Finance Loans PaymentsForOriginationsOfMortgageFinanceLoans	99799613000	USD
	tcbi	Payments For Originations Of Mortgage Finance Loans PaymentsForOriginationsOfMortgageFinanceLoans	73661362000	USD
	tcbi	Proceeds From Sale And Collection Of Mortgage Finance Loans ProceedsFromSaleAndCollectionOfMortgageFinanceLoans	97725705000	USD
	tcbi	Proceeds From Sale And Collection Of Mortgage Finance Loans ProceedsFromSaleAndCollectionOfMortgageFinanceLoans	73491735000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	143741000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1248423000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	15047000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5655000	USD
	us-gaap	Payments For Proceeds From Mortgage Servicing Rights PaymentsForProceedsFromMortgageServicingRights	0	USD
	us-gaap	Payments For Proceeds From Mortgage Servicing Rights PaymentsForProceedsFromMortgageServicingRights	-22439000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	79000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	13645000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2338214000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1483918000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	6807190000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1262457000	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1655000	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	2396000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	7313000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	7313000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-1400000000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	400000000	USD
	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	501207000	USD
	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	-121778000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	4897015000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1774526000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	2129205000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-120540000	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
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5209270000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2785051000	USD
	us-gaap	Interest Paid Net InterestPaidNet	282559000	USD
	us-gaap	Interest Paid Net InterestPaidNet	158750000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	85314000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	64225000	USD
	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>
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	88141000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	85552000	USD
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	240376	shares
	us-gaap	Net Income Loss NetIncomeLoss	248949000	USD
	us-gaap	Net Income Loss NetIncomeLoss	228933000	USD
CY2019Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2438000	USD
CY2018Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2438000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	7313000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	7313000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	85703000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	83114000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	241636000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	221620000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50305844	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50163433	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50273485	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	49853515	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	110558	shares
CY2018Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	207391	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	119277	shares
CY2018Q3	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	10525	shares
	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	115537	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50416402	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50381349	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50392762	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50209428	shares
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.70
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.66
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.81
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.45
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.70
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.65
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.80
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.41
CY2019Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	107615	shares
CY2018Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4000	shares
CY2019Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	203580000	USD
CY2019Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	14664000	USD
CY2019Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	3258000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	214986000	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
CY2019Q3	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	203580000	USD
CY2019Q3	us-gaap	Available For Sale Securities AvailableForSaleSecurities	214986000	USD
CY2018Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	102392000	USD
CY2018Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	103046000	USD
CY2019Q1	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019Q3	us-gaap	Available For Sale Securities Equity Securities AvailableForSaleSecuritiesEquitySecurities	23000000.0	USD
CY2018Q4	us-gaap	Available For Sale Securities Equity Securities AvailableForSaleSecuritiesEquitySecurities	17200000	USD
CY2019Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	37000	USD
CY2018Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	253000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	1876000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	149000	USD
CY2019Q3	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	-111000	USD
CY2018Q3	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	-18000	USD
	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	-87000	USD
	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	-180000	USD
CY2019Q3	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-74000	USD
CY2018Q3	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	235000	USD
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	1789000	USD
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-31000	USD
CY2019Q3	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	10377952000	USD
CY2018Q4	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	10373288000	USD
CY2019Q3	tcbi	Mortgage Finance MortgageFinance	7951432000	USD
CY2018Q4	tcbi	Mortgage Finance MortgageFinance	5877524000	USD
CY2019Q3	us-gaap	Loans Receivable Commercial Construction LoansReceivableCommercialConstruction	2641019000	USD
CY2018Q4	us-gaap	Loans Receivable Commercial Construction LoansReceivableCommercialConstruction	2120966000	USD
CY2019Q3	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	3513799000	USD
CY2018Q4	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	3929117000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Consumer Real Estate LoansAndLeasesReceivableConsumerRealEstate	68033000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Consumer Real Estate LoansAndLeasesReceivableConsumerRealEstate	63438000	USD
CY2019Q3	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	266600000	USD
CY2018Q4	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	312191000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	24818835000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	22676524000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	94579000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	108450000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	190138000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	191522000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	24534118000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	22376552000	USD
CY2019Q3	us-gaap	Participating Mortgage Loans Mortgage Obligations Amount ParticipatingMortgageLoansMortgageObligationsAmount	734700000	USD
CY2018Q4	us-gaap	Participating Mortgage Loans Mortgage Obligations Amount ParticipatingMortgageLoansMortgageObligationsAmount	193000000.0	USD
CY2019Q3	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	10377952000	USD
CY2019Q3	tcbi	Mortgage Finance MortgageFinance	7951432000	USD
CY2019Q3	us-gaap	Loans Receivable Commercial Construction LoansReceivableCommercialConstruction	2641019000	USD
CY2019Q3	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	3513799000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Consumer Real Estate LoansAndLeasesReceivableConsumerRealEstate	68033000	USD
CY2019Q3	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	266600000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	24818835000	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
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	60083000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	62874000	USD
	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1407000	USD
	us-gaap	Allowance For Loan And Lease Losses Writeoffs Net AllowanceForLoanAndLeaseLossesWriteoffsNet	61467000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	190138000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	26527000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	163611000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	190138000	USD
CY2019Q3	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	120686000	USD
CY2019Q3	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	24698149000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	24818835000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	184655000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	50788000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	46359000	USD
	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1222000	USD
	us-gaap	Allowance For Loan And Lease Losses Writeoffs Net AllowanceForLoanAndLeaseLossesWriteoffsNet	45137000	USD
CY2018Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	190306000	USD
CY2018Q3	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	30935000	USD
CY2018Q3	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	159371000	USD
CY2018Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	190306000	USD
CY2018Q3	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	114639000	USD
CY2018Q3	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	22039341000	USD
CY2018Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	22153980000	USD
CY2019Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	47063000	USD
CY2019Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	70348000	USD
	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	40720000	USD
	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod	0	USD
CY2019Q3	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	73623000	USD
CY2019Q3	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	96431000	USD
CY2019Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	26527000	USD
	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	78815000	USD
	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod	0	USD
CY2019Q3	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	120686000	USD
CY2019Q3	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	166779000	USD
CY2019Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	26527000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	119535000	USD
	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
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	119500000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	105000000.0	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Impaired Interest Income Recognized Change In Present Value Attributable To Passage Of Time LoansAndLeasesReceivableImpairedInterestIncomeRecognizedChangeInPresentValueAttributableToPassageOfTime	0	USD
CY2019Q3	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	134642000	USD
CY2019Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	120686000	USD
CY2019Q3	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	24563507000	USD
CY2019Q3	tcbi	Loans And Leases Receivable Gross Carrying Amount Excluding Nonaccrual LoansAndLeasesReceivableGrossCarryingAmountExcludingNonaccrual	24818835000	USD
CY2019Q3	tcbi	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing Premium Finance Loans FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruingPremiumFinanceLoans	9200000	USD
CY2019Q3	tcbi	Financing Receivable Modifications Non Accrual Loans Met Criteria For Restrucutred FinancingReceivableModificationsNonAccrualLoansMetCriteriaForRestrucutred	15500000	USD
CY2018Q4	tcbi	Financing Receivable Modifications Non Accrual Loans Met Criteria For Restrucutred FinancingReceivableModificationsNonAccrualLoansMetCriteriaForRestrucutred	20000000.0	USD
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	2	loan
CY2019Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	5765000	USD
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	7	loan
CY2018Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	14914000	USD
CY2019Q2	us-gaap	Other Real Estate OtherRealEstate	0	USD
CY2018Q2	us-gaap	Other Real Estate OtherRealEstate	9526000	USD
CY2018Q4	us-gaap	Other Real Estate OtherRealEstate	79000	USD
CY2017Q4	us-gaap	Other Real Estate OtherRealEstate	11742000	USD
CY2019Q3	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	0	USD
CY2018Q3	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	11447000	USD
	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	79000	USD
	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	11663000	USD
CY2019Q3	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	0	USD
CY2018Q3	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	2000000	USD
	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	0	USD
	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	0	USD
CY2019Q3	us-gaap	Other Real Estate OtherRealEstate	0	USD
CY2018Q3	us-gaap	Other Real Estate OtherRealEstate	79000	USD
CY2019Q3	us-gaap	Other Real Estate OtherRealEstate	0	USD
CY2018Q3	us-gaap	Other Real Estate OtherRealEstate	79000	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
	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Additions To Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowAdditionsToHeldForSale	7288823000	USD
	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Additions To Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowAdditionsToHeldForSale	5012188000	USD
	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Deductions From Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowDeductionsFromHeldForSale	6571942000	USD
	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Deductions From Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowDeductionsFromHeldForSale	4366138000	USD
CY2019Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	2666666000	USD
CY2018Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1658630000	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
	tcbi	Loans Receivable Heldforsale Increase Decreasein Fair Value LoansReceivableHeldforsaleIncreaseDecreaseinFairValue	-12130000	USD
	tcbi	Loans Receivable Heldforsale Increase Decreasein Fair Value LoansReceivableHeldforsaleIncreaseDecreaseinFairValue	-5124000	USD
CY2019Q3	tcbi	Loans Held For Sale Fair Value Over Under Principal Amount Outstanding LoansHeldForSaleFairValueOverUnderPrincipalAmountOutstanding	7559000	USD
CY2018Q3	tcbi	Loans Held For Sale Fair Value Over Under Principal Amount Outstanding LoansHeldForSaleFairValueOverUnderPrincipalAmountOutstanding	-6700000	USD
CY2019Q3	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	2674225000	USD
CY2018Q3	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	1651930000	USD
CY2019Q3	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	5600000000	USD
CY2018Q4	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	3900000000	USD
CY2019Q3	us-gaap	Escrow Deposit EscrowDeposit	75200000	USD
CY2018Q4	us-gaap	Escrow Deposit EscrowDeposit	37900000	USD
CY2019Q3	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof50 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof50BasisPointsAdverseChangeinPrepaymentSpeed	-6077000	USD
CY2018Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof50 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof50BasisPointsAdverseChangeinPrepaymentSpeed	-6028000	USD
CY2019Q3	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof100 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof100BasisPointsAdverseChangeinPrepaymentSpeed	-9340000	USD
CY2018Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof100 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof100BasisPointsAdverseChangeinPrepaymentSpeed	-11629000	USD
CY2019Q3	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	5400000	USD
	tcbi	Gain Loss On Repurchase Indemnificationand Make Whole Obligations GainLossOnRepurchaseIndemnificationandMakeWholeObligations	-4500000	USD
	tcbi	Gain Loss On Repurchase Indemnificationand Make Whole Obligations GainLossOnRepurchaseIndemnificationandMakeWholeObligations	-187000	USD
CY2019Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	84300000	USD
CY2019Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	98400000	USD
CY2019Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	3836000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	10973000	USD
CY2019Q3	us-gaap	Variable Lease Cost VariableLeaseCost	845000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	2977000	USD
CY2019Q3	us-gaap	Sublease Income SubleaseIncome	32000	USD
	us-gaap	Sublease Income SubleaseIncome	94000	USD
CY2019Q3	us-gaap	Lease Cost LeaseCost	4649000	USD
	us-gaap	Lease Cost LeaseCost	13856000	USD
CY2019Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	3592000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	11054000	USD
CY2019Q3	tcbi	Noncash Increase Decrease Right Of Use Asset NoncashIncreaseDecreaseRightOfUseAsset	13610000	USD
	tcbi	Noncash Increase Decrease Right Of Use Asset NoncashIncreaseDecreaseRightOfUseAsset	97898000	USD
CY2019Q3	tcbi	Noncash Increase Decrease Operating Lease Liability NoncashIncreaseDecreaseOperatingLeaseLiability	13610000	USD
	tcbi	Noncash Increase Decrease Operating Lease Liability NoncashIncreaseDecreaseOperatingLeaseLiability	107719000	USD
CY2019Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	4200000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	87900000	USD
CY2019Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y3M18D
CY2019Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0275
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	3666000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	16518000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	17035000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	16235000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	16271000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	39511000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	109236000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	10824000	USD
CY2019Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	98412000	USD
CY2009Q4	us-gaap	Assets Assets	15000000000.0	USD
CY2019Q3	tcbi	Common Equity Tier1 Capital CommonEquityTier1Capital	2579029000	USD
CY2019Q3	tcbi	Common Equity Tier1 Capitalto Risk Weighted Assets CommonEquityTier1CapitaltoRiskWeightedAssets	0.0859
CY2019Q3	us-gaap	Capital Capital	3318598000	USD
CY2019Q3	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1105
CY2019Q3	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	2837070000	USD
CY2019Q3	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.0945
CY2019Q3	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	2837070000	USD
CY2019Q3	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0863
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
CY2019Q3	tcbi	Mortgage Finance MortgageFinance	8000000000.0	USD
CY2019Q3	tcbi	Mortgage Finance Average Balance MortgageFinanceAverageBalance	8100000000	USD
CY2019Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4028000	USD
CY2018Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4436000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12973000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	15633000	USD
CY2019Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	26435000	USD
	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P3Y1M6D
CY2019Q3	tcbi	Cash Pledged As Derivative Collateral CashPledgedAsDerivativeCollateral	67000000.0	USD
CY2018Q4	tcbi	Cash Pledged As Derivative Collateral CashPledgedAsDerivativeCollateral	25300000	USD

Files In Submission

Name	View Source	Status
0001077428-19-000099-index-headers.html	Edgar Link	pending
0001077428-19-000099-index.html	Edgar Link	pending
0001077428-19-000099.txt	Edgar Link	pending
0001077428-19-000099-xbrl.zip	Edgar Link	pending
a9302019-10q.htm	Edgar Link	pending
a9302019-10q_htm.xml	Edgar Link	completed
ex311-930201910q.htm	Edgar Link	pending
ex312-930201910q.htm	Edgar Link	pending
ex321-930201910q.htm	Edgar Link	pending
ex322-930201910q.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
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R9999.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
tcbi-20190930.xsd	Edgar Link	pending
tcbi-20190930_cal.xml	Edgar Link	unprocessable
tcbi-20190930_def.xml	Edgar Link	unprocessable
tcbi-20190930_lab.xml	Edgar Link	unprocessable
tcbi-20190930_pre.xml	Edgar Link	unprocessable

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$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

2019 Q4 Form 10-Q Financial Statement

#000107742819000099 Filed on October 17, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBI TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

2019 Q4 Form 10-Q Financial Statement

#000107742819000099 Filed on October 17, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi