$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

$tcbi Overview Financials Valuation SEC Filings Company Website

2019 Q2 Form 10-Q Financial Statement

#000107742819000078 Filed on July 18, 2019

Income Statement

Concept	2019 Q2	2018 Q2	2018 Q1
Revenue	$346.9M	$286.9M	$253.9M
YoY Change	20.93%	37.78%	38.01%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development	$11.02M	$7.143M	$6.633M
YoY Change	54.3%	-40.01%	1.95%
% of Gross Profit
Depreciation & Amortization	$8.100M	$8.000M	$8.240M
YoY Change	1.25%	31.15%	32.56%
% of Gross Profit
Operating Expenses	$11.02M	$7.143M	$6.633M
YoY Change	54.3%	-40.01%	1.95%
Operating Profit
YoY Change
Interest Expense	$103.3M	$55.14M	$43.57M
YoY Change	87.41%	118.53%	111.63%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$99.20M	$89.86M	$91.29M
YoY Change	10.39%	16.83%	39.64%
Income Tax	$21.39M	$18.42M	$19.34M
% Of Pretax Income	21.56%	20.5%	21.19%
Net Earnings	$77.81M	$71.44M	$71.95M
YoY Change	8.93%	39.81%	69.12%
Net Earnings / Revenue	22.43%	24.9%	28.34%
Basic Earnings Per Share	$1.50	$1.39	$1.40
Diluted Earnings Per Share	$1.50	$1.38	$1.38
COMMON SHARES
Basic Shares Outstanding	50.28M shares	49.74M shares	49.65M shares
Diluted Shares Outstanding	50.38M shares	50.10M shares	50.35M shares

Balance Sheet

Concept	2019 Q2	2018 Q2	2018 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$3.645B	$3.463B	$2.451B
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	$28.20M	$26.18M	$27.56M
YoY Change	7.72%	26.14%	32.32%
Goodwill
YoY Change
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	$29.97B	$27.78B	$24.45B
YoY Change	7.88%	20.17%	17.18%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$23.00M	$11.00M	$5.000M
YoY Change	109.09%	83.33%	66.67%
Accrued Expenses	$88.00M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$507.0M	$521.0M	$536.0M
YoY Change	-2.69%	12.77%	277.46%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$111.0M	$11.00M	$5.000M
YoY Change	909.09%	83.33%	66.67%
LONG-TERM LIABILITIES
Long-Term Debt	$395.0M	$395.0M	$395.0M
YoY Change	0.0%	0.0%	0.0%
Other Long-Term Liabilities	$189.0M	$176.0M	$176.0M
YoY Change	7.39%	7.32%	4.14%
Total Long-Term Liabilities	$584.0M	$571.0M	$571.0M
YoY Change	2.28%	2.15%	1.24%
TOTAL LIABILITIES
Total Short-Term Liabilities	$111.0M	$11.00M	$5.000M
Total Long-Term Liabilities	$584.0M	$571.0M	$571.0M
Total Liabilities	$27.30B	$25.44B	$22.18B
YoY Change	7.33%	21.02%	17.87%
SHAREHOLDERS EQUITY
Retained Earnings	$1.516B	$1.229B	$1.160B
YoY Change	23.36%	23.89%	22.97%
Common Stock	$503.0K	$502.0K	$497.0K
YoY Change	0.2%	1.21%	0.2%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$8.000K	$8.000K	$8.000K
YoY Change	0.0%	0.0%	0.0%
Treasury Stock Shares	417.0 shares	417.0 shares	417.0 shares
Shareholders Equity	$2.647B	$2.344B	$2.273B
YoY Change
Total Liabilities & Shareholders Equity	$29.97B	$27.78B	$24.45B
YoY Change	7.88%	20.17%	17.18%

Cashflow Statement

Concept	2019 Q2	2018 Q2	2018 Q1
OPERATING ACTIVITIES
Net Income	$77.81M	$71.44M	$71.95M
YoY Change	8.93%	39.81%	69.12%
Depreciation, Depletion And Amortization	$8.100M	$8.000M	$8.240M
YoY Change	1.25%	31.15%	32.56%
Cash From Operating Activities	$861.7M	-$174.2M	$5.324M
YoY Change	-594.66%	-713.38%	-96.71%
INVESTING ACTIVITIES
Capital Expenditures	-$6.200M	-$800.0K	$4.441M
YoY Change	675.0%	-50.0%	-270.81%
Acquisitions
YoY Change
Other Investing Activities	-$998.2M	-$2.066B	$236.0M
YoY Change	-51.68%	-28.34%	-70.68%
Cash From Investing Activities	-$1.004B	-$2.066B	$231.5M
YoY Change	-51.4%	-28.35%	-71.14%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	1.456B	3.252B	-$691.3M
YoY Change	-55.24%	47.53%	-21.67%
NET CHANGE
Cash From Operating Activities	861.7M	-174.2M	$5.324M
Cash From Investing Activities	-1.004B	-2.066B	$231.5M
Cash From Financing Activities	1.456B	3.252B	-$691.3M
Net Change In Cash	1.313B	1.012B	-$454.4M
YoY Change	29.8%	-255.34%	-657.01%
FREE CASH FLOW
Cash From Operating Activities	$861.7M	-$174.2M	$5.324M
Capital Expenditures	-$6.200M	-$800.0K	$4.441M
Free Cash Flow	$867.9M	-$173.4M	$883.0K
YoY Change	-600.52%	-678.0%	-99.46%

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	Q2
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Entity Central Index Key EntityCentralIndexKey	0001077428
	dei	Entity Registrant Name EntityRegistrantName	TEXAS CAPITAL BANCSHARES INC/TX
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CY2019Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	6000000	shares
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	417	shares
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	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-06-30
	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 City Or Town EntityAddressCityOrTown	Dallas
	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 Other NoninterestIncomeOther	10200000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	24364000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	17279000	USD
	us-gaap	Noninterest Income NoninterestIncome	54378000	USD
	us-gaap	Noninterest Income NoninterestIncome	37226000	USD
CY2019Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	76889000	USD
CY2018Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	72404000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	154712000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	144941000	USD
CY2019Q2	us-gaap	Occupancy Net OccupancyNet	7910000	USD
CY2018Q2	us-gaap	Occupancy Net OccupancyNet	7356000	USD
	us-gaap	Occupancy Net OccupancyNet	15789000	USD
	us-gaap	Occupancy Net OccupancyNet	14590000	USD
CY2019Q2	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	14087000	USD
CY2018Q2	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	10236000	USD
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	25795000	USD
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	18913000	USD
CY2019Q2	us-gaap	Professional Fees ProfessionalFees	10004000	USD
CY2018Q2	us-gaap	Professional Fees ProfessionalFees	11654000	USD
	us-gaap	Professional Fees ProfessionalFees	20034000	USD
	us-gaap	Professional Fees ProfessionalFees	19184000	USD
CY2019Q2	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	11022000	USD
CY2018Q2	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	7143000	USD
	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	20220000	USD
	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	13776000	USD
CY2019Q2	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	4138000	USD
CY2018Q2	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	6257000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	9260000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	12360000	USD
CY2019Q2	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	6066000	USD
CY2018Q2	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	4367000	USD
	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	11448000	USD
CY2019Q2	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	0	USD
CY2018Q2	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	176000	USD
	us-gaap	Expense Related To Distribution Or Servicing And Underwriting Fees ExpenseRelatedToDistributionOrServicingAndUnderwritingFees	8172000	USD
	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	0	USD
	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	2331000	USD
CY2019Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	11445000	USD
CY2018Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	12538000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	24681000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	24824000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	141561000	USD
CY2018Q2	us-gaap	Noninterest Expense NoninterestExpense	132131000	USD
	us-gaap	Noninterest Expense NoninterestExpense	281939000	USD
	us-gaap	Noninterest Expense NoninterestExpense	259091000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	99356000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	89860000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	204606000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	181147000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21387000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18424000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	43798000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37766000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	77969000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	71436000	USD
	us-gaap	Net Income Loss NetIncomeLoss	160808000	USD
	us-gaap	Net Income Loss NetIncomeLoss	143381000	USD
CY2019Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
CY2018Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4875000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4875000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	75532000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	68999000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	155933000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	138506000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	9921000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-104000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	9868000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-167000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	2083000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-22000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	2073000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-35000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	7838000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-82000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	7795000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2134000	USD
CY2018Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	2437000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-132000	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	2343530000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	2581942000	USD
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	85807000	USD
CY2018Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-950000	USD
CY2018Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	71354000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	168603000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	143249000	USD
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.50
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.39
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.10
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.79
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.50
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.38
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.10
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.76
CY2018Q1	us-gaap	Stockholders Equity StockholdersEquity	2273429000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	71436000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-82000	USD
CY2018Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	71354000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	77969000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	7838000	USD
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	85807000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3119000	USD
CY2019Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	2437000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	21000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	2668452000	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
	us-gaap	Net Income Loss NetIncomeLoss	143381000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-132000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	143249000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4091000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	4875000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1658000	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	2343530000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2500394000	USD
	us-gaap	Net Income Loss NetIncomeLoss	160808000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	7795000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	168603000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5542000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	4875000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1212000	USD
	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	3205483000	USD
	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	5045744000	USD
	us-gaap	Payments For Proceeds From Mortgage Servicing Rights PaymentsForProceedsFromMortgageServicingRights	-22439000	USD
	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	2908777000	USD
	us-gaap	Payments For Proceeds From Mortgage Servicing Rights PaymentsForProceedsFromMortgageServicingRights	0	USD
	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-6491000	USD
	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-7403000	USD
	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	5772000	USD
	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	-2823000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	8945000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	11197000	USD
	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	4172519000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	2668452000	USD
	us-gaap	Net Income Loss NetIncomeLoss	160808000	USD
	us-gaap	Net Income Loss NetIncomeLoss	143381000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	47000000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	39000000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	15938000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	16214000	USD
	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	2000000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	190910000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	96715000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	98638000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-14289000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1025907000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-168899000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	110394000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	3323000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	349000	USD
	tcbi	Principal Payments Received On Available For Sale Securities PrincipalPaymentsReceivedOnAvailableForSaleSecurities	1159000	USD
	tcbi	Principal Payments Received On Available For Sale Securities PrincipalPaymentsReceivedOnAvailableForSaleSecurities	1644000	USD
	tcbi	Payments For Originations Of Mortgage Finance Loans PaymentsForOriginationsOfMortgageFinanceLoans	59008649000	USD
	tcbi	Payments For Originations Of Mortgage Finance Loans PaymentsForOriginationsOfMortgageFinanceLoans	45661608000	USD
	tcbi	Proceeds From Sale And Collection Of Mortgage Finance Loans ProceedsFromSaleAndCollectionOfMortgageFinanceLoans	57470810000	USD
	tcbi	Proceeds From Sale And Collection Of Mortgage Finance Loans ProceedsFromSaleAndCollectionOfMortgageFinanceLoans	45046710000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	258579000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1213641000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	8758000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5212000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	79000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	216000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	557203000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3080065000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1914332000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1834865000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	2392964000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1211691000	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1212000	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1658000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	4875000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	4875000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-800000000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	1200000000	USD
	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	133940000	USD
	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	-155809000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1452937000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2560967000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	564512000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2905591000	USD
CY2019Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3644577000	USD
CY2018Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3462794000	USD
	us-gaap	Interest Paid InterestPaid	190847000	USD
	us-gaap	Interest Paid InterestPaid	95121000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	63998000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	49770000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	71436000	USD
	us-gaap	Net Income Loss NetIncomeLoss	160808000	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>
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	77969000	USD
	us-gaap	Net Income Loss NetIncomeLoss	143381000	USD
CY2019Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
CY2018Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2437000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4875000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4875000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	75532000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	68999000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	155933000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	138506000	USD
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50280776	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	49736384	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50257039	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	49695783	shares
CY2019Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	103094	shares
CY2018Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	348762	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	102954	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	336285	shares
CY2019Q2	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2018Q2	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	10869	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	112884	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50383870	shares
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50096015	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50359993	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50144952	shares
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.50
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.39
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.10
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.79
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.50
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.38
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.10
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.76
CY2019Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	116840	shares
CY2018Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4000	shares
CY2019Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	207956000	USD
CY2019Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	14282000	USD
CY2019Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	3760000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	218478000	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
CY2019Q2	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	207956000	USD
CY2019Q2	us-gaap	Available For Sale Securities AvailableForSaleSecurities	218478000	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
CY2019Q2	us-gaap	Available For Sale Securities Equity Securities AvailableForSaleSecuritiesEquitySecurities	22400000	USD
CY2018Q4	us-gaap	Available For Sale Securities Equity Securities AvailableForSaleSecuritiesEquitySecurities	17200000	USD
CY2019Q2	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	573000	USD
CY2018Q2	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	108000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	1839000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-104000	USD
CY2019Q2	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	-6000	USD
CY2018Q2	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	-162000	USD
	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	24000	USD
	us-gaap	Gain Loss On Sale Of Equity Investments GainLossOnSaleOfEquityInvestments	-162000	USD
CY2019Q2	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	567000	USD
CY2018Q2	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-54000	USD
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	1863000	USD
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-266000	USD
CY2019Q2	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	10571571000	USD
CY2018Q4	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	10373288000	USD
CY2019Q2	tcbi	Mortgage Finance MortgageFinance	7415363000	USD
CY2018Q4	tcbi	Mortgage Finance MortgageFinance	5877524000	USD
CY2019Q2	us-gaap	Loans Receivable Commercial Construction LoansReceivableCommercialConstruction	2640526000	USD
CY2018Q4	us-gaap	Loans Receivable Commercial Construction LoansReceivableCommercialConstruction	2120966000	USD
CY2019Q2	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	3469960000	USD
CY2018Q4	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	3929117000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Consumer Real Estate LoansAndLeasesReceivableConsumerRealEstate	60315000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Consumer Real Estate LoansAndLeasesReceivableConsumerRealEstate	63438000	USD
CY2019Q2	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	280983000	USD
CY2018Q4	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	312191000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	24438718000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	22676524000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	98820000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	108450000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	214572000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	191522000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	24125326000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	22376552000	USD
CY2019Q2	us-gaap	Participating Mortgage Loans Mortgage Obligations Amount ParticipatingMortgageLoansMortgageObligationsAmount	422300000	USD
CY2018Q4	us-gaap	Participating Mortgage Loans Mortgage Obligations Amount ParticipatingMortgageLoansMortgageObligationsAmount	193000000.0	USD
CY2019Q2	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	10571571000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	191522000	USD
CY2019Q2	tcbi	Mortgage Finance MortgageFinance	7415363000	USD
CY2019Q2	us-gaap	Loans Receivable Commercial Construction LoansReceivableCommercialConstruction	2640526000	USD
CY2019Q2	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	3469960000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Consumer Real Estate LoansAndLeasesReceivableConsumerRealEstate	60315000	USD
CY2019Q2	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	280983000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	24438718000	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
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	47644000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	25095000	USD
	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	501000	USD
	us-gaap	Allowance For Loan And Lease Losses Writeoffs Net AllowanceForLoanAndLeaseLossesWriteoffsNet	24594000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	214572000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	28395000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	186177000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	214572000	USD
CY2019Q2	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	120200000	USD
CY2019Q2	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	24318518000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	24438718000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	184655000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	37613000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	43972000	USD
	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	800000	USD
	us-gaap	Allowance For Loan And Lease Losses Writeoffs Net AllowanceForLoanAndLeaseLossesWriteoffsNet	43172000	USD
CY2018Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	179096000	USD
CY2018Q2	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	12351000	USD
CY2018Q2	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	166745000	USD
CY2018Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	179096000	USD
CY2018Q2	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	83880000	USD
CY2018Q2	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	22485238000	USD
CY2018Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	22569118000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	38451000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	43049000	USD
	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	40421000	USD
	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod	0	USD
CY2019Q2	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	81749000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	102896000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	28395000	USD
	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	78701000	USD
	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod	0	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	120200000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	145945000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	28395000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	119122000	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	119100000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	110400000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Impaired Interest Income Recognized Change In Present Value Attributable To Passage Of Time LoansAndLeasesReceivableImpairedInterestIncomeRecognizedChangeInPresentValueAttributableToPassageOfTime	0	USD
CY2019Q2	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	109378000	USD
CY2019Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	114084000	USD
CY2019Q2	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	24215256000	USD
CY2019Q2	tcbi	Loans And Leases Receivable Gross Carrying Amount Excluding Nonaccrual LoansAndLeasesReceivableGrossCarryingAmountExcludingNonaccrual	24438718000	USD
CY2019Q2	tcbi	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing Premium Finance Loans FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruingPremiumFinanceLoans	9800000	USD
CY2019Q2	tcbi	Financing Receivable Modifications Non Accrual Loans Met Criteria For Restrucutred FinancingReceivableModificationsNonAccrualLoansMetCriteriaForRestrucutred	32000000.0	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
CY2019Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	18437000	USD
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1	loan
CY2018Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	1370000	USD
CY2019Q1	us-gaap	Other Real Estate OtherRealEstate	0	USD
CY2018Q1	us-gaap	Other Real Estate OtherRealEstate	9558000	USD
CY2018Q4	us-gaap	Other Real Estate OtherRealEstate	79000	USD
CY2017Q4	us-gaap	Other Real Estate OtherRealEstate	11742000	USD
CY2019Q2	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	0	USD
CY2018Q2	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	32000	USD
	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	79000	USD
	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	216000	USD
CY2019Q2	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	0	USD
CY2018Q2	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	0	USD
	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	0	USD
	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	2000000	USD
CY2019Q2	us-gaap	Other Real Estate OtherRealEstate	0	USD
CY2018Q2	us-gaap	Other Real Estate OtherRealEstate	9526000	USD
CY2019Q2	us-gaap	Other Real Estate OtherRealEstate	0	USD
CY2018Q2	us-gaap	Other Real Estate OtherRealEstate	9526000	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	4172519000	USD
	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Additions To Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowAdditionsToHeldForSale	3205483000	USD
	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Deductions From Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowDeductionsFromHeldForSale	5071502000	USD
	us-gaap	Loans Receivable Held For Sale Reconciliation To Cash Flow Deductions From Held For Sale LoansReceivableHeldForSaleReconciliationToCashFlowDeductionsFromHeldForSale	2942872000	USD
CY2019Q2	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1050802000	USD
CY2018Q2	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1275191000	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	-12905000	USD
	tcbi	Loans Receivable Heldforsale Increase Decreasein Fair Value LoansReceivableHeldforsaleIncreaseDecreaseinFairValue	3153000	USD
CY2019Q2	tcbi	Loans Held For Sale Fair Value Over Under Principal Amount Outstanding LoansHeldForSaleFairValueOverUnderPrincipalAmountOutstanding	6784000	USD
CY2018Q2	tcbi	Loans Held For Sale Fair Value Over Under Principal Amount Outstanding LoansHeldForSaleFairValueOverUnderPrincipalAmountOutstanding	1577000	USD
CY2019Q2	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	1057586000	USD
CY2018Q2	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	1276768000	USD
CY2019Q2	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	5100000000	USD
CY2018Q4	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	3900000000	USD
CY2019Q2	us-gaap	Escrow Deposit EscrowDeposit	69200000	USD
CY2018Q4	us-gaap	Escrow Deposit EscrowDeposit	37900000	USD
CY2019Q2	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof50 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof50BasisPointsAdverseChangeinPrepaymentSpeed	-6294000	USD
CY2018Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof50 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof50BasisPointsAdverseChangeinPrepaymentSpeed	-6028000	USD
CY2019Q2	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof100 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof100BasisPointsAdverseChangeinPrepaymentSpeed	-10062000	USD
CY2018Q4	tcbi	Sensitivity Analysisof Fair Value Transferors Interestsin Transferred Financial Assets Impactof100 Basis Points Adverse Changein Prepayment Speed SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof100BasisPointsAdverseChangeinPrepaymentSpeed	-11629000	USD
CY2019Q2	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	1100000	USD
CY2018Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	1600000	USD
	tcbi	Gain Loss On Repurchase Indemnificationand Make Whole Obligations GainLossOnRepurchaseIndemnificationandMakeWholeObligations	-1000000.0	USD
	tcbi	Gain Loss On Repurchase Indemnificationand Make Whole Obligations GainLossOnRepurchaseIndemnificationandMakeWholeObligations	-148000	USD
CY2019Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	78000000.0	USD
CY2019Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	87700000	USD
CY2019Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	3617000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	7133000	USD
CY2019Q2	us-gaap	Variable Lease Cost VariableLeaseCost	1234000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	2137000	USD
CY2019Q2	us-gaap	Sublease Income SubleaseIncome	32000	USD
	us-gaap	Sublease Income SubleaseIncome	63000	USD
CY2019Q2	us-gaap	Lease Cost LeaseCost	4819000	USD
	us-gaap	Lease Cost LeaseCost	9207000	USD
CY2019Q2	us-gaap	Operating Lease Payments OperatingLeasePayments	3682000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	7463000	USD
CY2019Q2	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	19409000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	83902000	USD
CY2019Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2019Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0283
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	7257000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	15765000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	16068000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	15240000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	14303000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	28827000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	97460000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	9711000	USD
CY2019Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	87749000	USD
CY2019Q1	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	9795000	USD
CY2018Q1	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	9623000	USD
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
CY2019Q2	tcbi	Financing Receivable Provision For Off Balance Sheet Credit Losses FinancingReceivableProvisionForOffBalanceSheetCreditLosses	995000	USD
CY2018Q2	tcbi	Financing Receivable Provision For Off Balance Sheet Credit Losses FinancingReceivableProvisionForOffBalanceSheetCreditLosses	835000	USD
	tcbi	Financing Receivable Provision For Off Balance Sheet Credit Losses FinancingReceivableProvisionForOffBalanceSheetCreditLosses	-644000	USD
	tcbi	Financing Receivable Provision For Off Balance Sheet Credit Losses FinancingReceivableProvisionForOffBalanceSheetCreditLosses	1387000	USD
CY2019Q2	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	10790000	USD
CY2018Q2	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	10458000	USD
CY2019Q2	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	10790000	USD
CY2018Q2	tcbi	Financing Receivable Allowance For Credit Losses Off Balance Sheet Liability FinancingReceivableAllowanceForCreditLossesOffBalanceSheetLiability	10458000	USD
CY2009Q4	us-gaap	Assets Assets	15000000000.0	USD
CY2019Q2	tcbi	Common Equity Tier1 Capital CommonEquityTier1Capital	2490722000	USD
CY2019Q2	tcbi	Common Equity Tier1 Capitalto Risk Weighted Assets CommonEquityTier1CapitaltoRiskWeightedAssets	0.0867
CY2019Q2	us-gaap	Capital Capital	3255515000	USD
CY2019Q2	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1133
CY2019Q2	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	2748206000	USD
CY2019Q2	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.0957
CY2019Q2	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	2748206000	USD
CY2019Q2	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0923
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
CY2019Q2	tcbi	Mortgage Finance MortgageFinance	7400000000	USD
CY2019Q2	tcbi	Mortgage Finance Average Balance MortgageFinanceAverageBalance	7000000000.0	USD
CY2019Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4457000	USD
CY2018Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5226000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8945000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11197000	USD
CY2019Q2	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	28397000	USD
	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P3Y1M6D
CY2019Q2	tcbi	Cash Pledged As Derivative Collateral CashPledgedAsDerivativeCollateral	61400000	USD
CY2018Q4	tcbi	Cash Pledged As Derivative Collateral CashPledgedAsDerivativeCollateral	25300000	USD

Files In Submission

Name	View Source	Status
0001077428-19-000078-index-headers.html	Edgar Link	pending
0001077428-19-000078-index.html	Edgar Link	pending
0001077428-19-000078.txt	Edgar Link	pending
0001077428-19-000078-xbrl.zip	Edgar Link	pending
a6302019-10q.htm	Edgar Link	pending
a6302019-10q_htm.xml	Edgar Link	completed
ex311-630201910q.htm	Edgar Link	pending
ex312-630201910q.htm	Edgar Link	pending
ex321-630201910q.htm	Edgar Link	pending
ex322-630201910q.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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report.css	Edgar Link	pending
Show.js	Edgar Link	pending
tcbi-20190630.xsd	Edgar Link	pending
tcbi-20190630_cal.xml	Edgar Link	unprocessable
tcbi-20190630_def.xml	Edgar Link	unprocessable
tcbi-20190630_lab.xml	Edgar Link	unprocessable
tcbi-20190630_pre.xml	Edgar Link	unprocessable

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$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

2019 Q2 Form 10-Q Financial Statement

#000107742819000078 Filed on July 18, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBI TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi

2019 Q2 Form 10-Q Financial Statement

#000107742819000078 Filed on July 18, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBI
TEXAS CAPITAL BANCSHARES INC/TX Stock $tcbi