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Securities Available for Sale and Held to Maturity (1) (Details) (USD $)	3 Months Ended	12 Months Ended			3 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2014
Estimated fair value [Abstract]
Estimated fair value, less than 12 months	$ 2,108,340,000trmk_EstimatedFairValueLessThan12Months	$ 590,965,000trmk_EstimatedFairValueLessThan12Months	$ 2,108,340,000trmk_EstimatedFairValueLessThan12Months
Estimated fair value, 12 months or more	24,415,000trmk_EstimatedFairValue12MonthsOrMore	522,230,000trmk_EstimatedFairValue12MonthsOrMore	24,415,000trmk_EstimatedFairValue12MonthsOrMore
Total estimated fair value	2,132,755,000trmk_TotalEstimatedFairValue	1,113,195,000trmk_TotalEstimatedFairValue	2,132,755,000trmk_TotalEstimatedFairValue
Gross unrealized losses [Abstract]
Gross unrealized (losses), less than 12 months	(47,362,000)trmk_GrossUnrealizedLossesLessThan12Months	(2,663,000)trmk_GrossUnrealizedLossesLessThan12Months	(47,362,000)trmk_GrossUnrealizedLossesLessThan12Months
Gross unrealized (losses), 12 months or more	(426,000)trmk_GrossUnrealizedLosses12MonthsOrMore	(11,909,000)trmk_GrossUnrealizedLosses12MonthsOrMore	(426,000)trmk_GrossUnrealizedLosses12MonthsOrMore
Total gross unrealized (losses)	(47,788,000)trmk_TotalGrossUnrealizedLosses	(14,572,000)trmk_TotalGrossUnrealizedLosses	(47,788,000)trmk_TotalGrossUnrealizedLosses
Gains (losses) on investments [Abstract]
Gross realized (losses)		300,000us-gaap_GainLossOnSaleOfSecuritiesNet	485,000us-gaap_GainLossOnSaleOfSecuritiesNet	1,059,000us-gaap_GainLossOnSaleOfSecuritiesNet
Pledged to collateralize public deposits and securities sold under repurchase agreements and for other purposes as permitted by law	2,475,000,000trmk_PledgedCollateralizeDepositsAndSecuritiesSoldUnderRepurchaseAgreements	2,457,000,000trmk_PledgedCollateralizeDepositsAndSecuritiesSoldUnderRepurchaseAgreements	2,475,000,000trmk_PledgedCollateralizeDepositsAndSecuritiesSoldUnderRepurchaseAgreements
Pledged securities providing additional contingency funding		6,000,000trmk_PledgedSecuritiesProvidingAdditionalContingencyFunding
Available for Sale, amortized cost [Abstract]
Due in one year or less		18,088,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost
Due after one year through five years		137,976,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost
Due after five years through ten years		61,738,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost
Due after ten years		82,588,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost
Total amortized cost, before mortgage-backed-securities		300,390,000trmk_TotalAmortizedCostBeforeMortgageBackedSecurities
Mortgage-backed securities		2,051,623,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost
Securities available for sale (at amortized cost)		2,352,013,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost
Available for Sale, estimated fair value [Abstract]
Due in one year or less		18,236,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
Due after one year through five years		142,016,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
Due after five years through ten years		63,811,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
Due after ten years		82,469,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
Total fair value, before mortgage-backed-securities		306,532,000trmk_TotalFairValueOfAvailableForSaleSecuritiesBeforeMortgageBackSecurities
Mortgage-backed securities		2,068,035,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue
Securities available for sale (at fair value)	2,194,154,000us-gaap_AvailableForSaleSecurities	2,374,567,000us-gaap_AvailableForSaleSecurities	2,194,154,000us-gaap_AvailableForSaleSecurities
Held to maturity, amortized cost [Abstract]
Due in one year or less		2,496,000us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount
Due after one year through five years		11,693,000us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount
Due after five years through ten years		137,991,000us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount
Due after ten years		12,296,000us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount
Total amortized cost, before mortgage-backed-securities		164,476,000trmk_TotalAmortizedCostHeldToMaturityBeforeMortgageBackedSecurities
Mortgage-backed securities		1,006,209,000us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount
Securities held to maturity (at amortized cost)	1,168,728,000us-gaap_HeldToMaturitySecurities	1,170,685,000us-gaap_HeldToMaturitySecurities	1,168,728,000us-gaap_HeldToMaturitySecurities
Held to maturity, estimated fair value [Abstract]
Due in one year or less		2,513,000us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue
Due after one year through five years		12,298,000us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
Due after five years through ten years		142,604,000us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
Due after ten years		13,090,000us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue
Total fair value, before mortgage-backed-securities		170,505,000trmk_TotalFairValueOfHeldToMaturitySecuritiesBeforeMortgageBackSecurities
Mortgage-backed securities		1,012,341,000us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue
Securities held to maturity (at fair value)	1,150,833,000us-gaap_HeldToMaturitySecuritiesFairValue	1,182,846,000us-gaap_HeldToMaturitySecuritiesFairValue	1,150,833,000us-gaap_HeldToMaturitySecuritiesFairValue
Reclassification of Securities available for sale to securities held to maturity	1,099,000,000trmk_ReclassificationOfAvailableForSaleToHeldToMaturitySecurities
Net unrealized holding loss on AFS Securities at date of transfer	46,600,000trmk_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTaxAtDateOfTransfer
Net unrealized holding loss on AFS Securities, net of tax at date of transfer	28,800,000trmk_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTaxAtDateOfTransfer
Net unamortized, unrealized loss on transfer of securities		40,400,000trmk_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustment
Net unamortized, unrealized loss on transfer of securities, net of tax		24,900,000us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
Other-than-temporary impairments		0us-gaap_ImpairmentOfInvestments	0us-gaap_ImpairmentOfInvestments	0us-gaap_ImpairmentOfInvestments
Available-for-sale Securities [Member]
Gains (losses) on investments [Abstract]
Proceeds from calls and sales of securities		56,815,000trmk_ProceedsFromCallsAndSalesOfSecurities / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_AvailableforsaleSecuritiesMember	224,853,000trmk_ProceedsFromCallsAndSalesOfSecurities / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_AvailableforsaleSecuritiesMember	38,364,000trmk_ProceedsFromCallsAndSalesOfSecurities / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_AvailableforsaleSecuritiesMember
Gross realized gains		456,000trmk_ProceedsFromMaturitiesCallsOfHeldToMaturitySecurities / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_AvailableforsaleSecuritiesMember	1,680,000trmk_ProceedsFromMaturitiesCallsOfHeldToMaturitySecurities / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_AvailableforsaleSecuritiesMember	1,052,000trmk_ProceedsFromMaturitiesCallsOfHeldToMaturitySecurities / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_AvailableforsaleSecuritiesMember
Gross realized (losses)		(156,000)us-gaap_GainLossOnSaleOfSecuritiesNet / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_AvailableforsaleSecuritiesMember	(1,195,000)us-gaap_GainLossOnSaleOfSecuritiesNet / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_AvailableforsaleSecuritiesMember	(2,000)us-gaap_GainLossOnSaleOfSecuritiesNet / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_AvailableforsaleSecuritiesMember
Held-to-maturity Securities [Member]
Gains (losses) on investments [Abstract]
Proceeds from calls and sales of securities		0trmk_ProceedsFromCallsAndSalesOfSecurities / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_HeldtomaturitySecuritiesMember	0trmk_ProceedsFromCallsAndSalesOfSecurities / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_HeldtomaturitySecuritiesMember	335,000trmk_ProceedsFromCallsAndSalesOfSecurities / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_HeldtomaturitySecuritiesMember
Gross realized gains		0trmk_ProceedsFromMaturitiesCallsOfHeldToMaturitySecurities / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_HeldtomaturitySecuritiesMember	0trmk_ProceedsFromMaturitiesCallsOfHeldToMaturitySecurities / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_HeldtomaturitySecuritiesMember	9,000trmk_ProceedsFromMaturitiesCallsOfHeldToMaturitySecurities / us-gaap_GainLossOnInvestmentsByCategoryAxis = us-gaap_HeldtomaturitySecuritiesMember
U.S. Government Agency Obligations Issued by U.S. Government Agencies [Member]
Estimated fair value [Abstract]
Estimated fair value, less than 12 months	68,908,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	19,220,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	68,908,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Estimated fair value, 12 months or more	0trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	32,656,000trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	0trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Total estimated fair value	68,908,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	51,876,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	68,908,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Gross unrealized losses [Abstract]
Gross unrealized (losses), less than 12 months	(1,485,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	(115,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	(1,485,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Gross unrealized (losses), 12 months or more	0trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	(711,000)trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	0trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Total gross unrealized (losses)	(1,485,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	(826,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	(1,485,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Held to maturity, amortized cost [Abstract]
Securities held to maturity (at amortized cost)	0us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	0us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	0us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Held to maturity, estimated fair value [Abstract]
Securities held to maturity (at fair value)	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember
U.S. Government Agency Obligations Issued by U.S. Government Sponsored Agencies [Member]
Estimated fair value [Abstract]
Estimated fair value, less than 12 months	138,478,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	9,948,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	138,478,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Estimated fair value, 12 months or more	0trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	9,956,000trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	0trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Total estimated fair value	138,478,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	19,904,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	138,478,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Gross unrealized losses [Abstract]
Gross unrealized (losses), less than 12 months	(2,101,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	(52,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	(2,101,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Gross unrealized (losses), 12 months or more	0trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	(25,000)trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	0trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Total gross unrealized (losses)	(2,101,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	(77,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	(2,101,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Held to maturity, amortized cost [Abstract]
Securities held to maturity (at amortized cost)	100,159,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	100,971,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	100,159,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Held to maturity, estimated fair value [Abstract]
Securities held to maturity (at fair value)	98,579,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	103,602,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember	98,579,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Obligations of States and Political Subdivisions [Member]
Estimated fair value [Abstract]
Estimated fair value, less than 12 months	55,963,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	8,431,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	55,963,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember
Estimated fair value, 12 months or more	796,000trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	3,800,000trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	796,000trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember
Total estimated fair value	56,759,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	12,231,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	56,759,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember
Gross unrealized losses [Abstract]
Gross unrealized (losses), less than 12 months	(586,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	(22,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	(586,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember
Gross unrealized (losses), 12 months or more	(10,000)trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	(46,000)trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	(10,000)trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember
Total gross unrealized (losses)	(596,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	(68,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	(596,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember
Held to maturity, amortized cost [Abstract]
Securities held to maturity (at amortized cost)	65,987,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	63,505,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	65,987,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember
Held to maturity, estimated fair value [Abstract]
Securities held to maturity (at fair value)	68,512,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	66,903,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember	68,512,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_USStatesAndPoliticalSubdivisionsMember
Residential Mortgage Pass-Through Securities Guaranteed by GNMA [Member]
Estimated fair value [Abstract]
Estimated fair value, less than 12 months	14,732,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	7,199,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	14,732,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember
Estimated fair value, 12 months or more	161,000trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	647,000trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	161,000trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember
Total estimated fair value	14,893,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	7,846,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	14,893,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember
Gross unrealized losses [Abstract]
Gross unrealized (losses), less than 12 months	(155,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	(22,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	(155,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember
Gross unrealized (losses), 12 months or more	(1,000)trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	(8,000)trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	(1,000)trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember
Total gross unrealized (losses)	(156,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	(30,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	(156,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember
Held to maturity, amortized cost [Abstract]
Securities held to maturity (at amortized cost)	9,433,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	19,115,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	9,433,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember
Held to maturity, estimated fair value [Abstract]
Securities held to maturity (at fair value)	9,503,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	19,565,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember	9,503,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesGuaranteedByGnmaMember
Residential Mortgage Pass-Through Securities Issued by FNMA and FHLMC [Member]
Estimated fair value [Abstract]
Estimated fair value, less than 12 months	118,466,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember		118,466,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember
Estimated fair value, 12 months or more	0trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember		0trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember
Total estimated fair value	118,466,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember		118,466,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember
Gross unrealized losses [Abstract]
Gross unrealized (losses), less than 12 months	(2,071,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember		(2,071,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember
Gross unrealized (losses), 12 months or more	0trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember		0trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember
Total gross unrealized (losses)	(2,071,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember		(2,071,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember
Held to maturity, amortized cost [Abstract]
Securities held to maturity (at amortized cost)	12,724,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember	11,437,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember	12,724,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember
Held to maturity, estimated fair value [Abstract]
Securities held to maturity (at fair value)	12,592,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember	11,908,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember	12,592,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = trmk_ResidentialMortgagePassThroughSecuritiesIssuedByFnmaAndFhlmcMember
Other Residential Mortgage-Backed Securities Issued or Guaranteed by FNMA, FHLMC or GNMA [Member]
Estimated fair value [Abstract]
Estimated fair value, less than 12 months	1,534,381,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	537,033,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	1,534,381,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember
Estimated fair value, 12 months or more	23,458,000trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	395,342,000trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	23,458,000trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember
Total estimated fair value	1,557,839,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	932,375,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	1,557,839,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember
Gross unrealized losses [Abstract]
Gross unrealized (losses), less than 12 months	(36,750,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	(2,449,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	(36,750,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember
Gross unrealized (losses), 12 months or more	(415,000)trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	(10,031,000)trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	(415,000)trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember
Total gross unrealized (losses)	(37,165,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	(12,480,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	(37,165,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember
Held to maturity, amortized cost [Abstract]
Securities held to maturity (at amortized cost)	837,393,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	834,176,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	837,393,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember
Held to maturity, estimated fair value [Abstract]
Securities held to maturity (at fair value)	822,321,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	838,700,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember	822,321,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = trmk_OtherResidentialMortgageBackedSecuritiesIssuedOrGuaranteedByFnmaFhlmcOrGnmaMember
Commercial Mortgage-Backed Securities Issued or Guaranteed by FNMA, FHLMC or GNMA [Member]
Estimated fair value [Abstract]
Estimated fair value, less than 12 months	177,412,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	9,134,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	177,412,000trmk_EstimatedFairValueLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember
Estimated fair value, 12 months or more	0trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	79,829,000trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	0trmk_EstimatedFairValue12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember
Total estimated fair value	177,412,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	88,963,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	177,412,000trmk_TotalEstimatedFairValue / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember
Gross unrealized losses [Abstract]
Gross unrealized (losses), less than 12 months	(4,214,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	(3,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	(4,214,000)trmk_GrossUnrealizedLossesLessThan12Months / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember
Gross unrealized (losses), 12 months or more	0trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	(1,088,000)trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	0trmk_GrossUnrealizedLosses12MonthsOrMore / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember
Total gross unrealized (losses)	(4,214,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	(1,091,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	(4,214,000)trmk_TotalGrossUnrealizedLosses / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember
Held to maturity, amortized cost [Abstract]
Securities held to maturity (at amortized cost)	143,032,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	141,481,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	143,032,000us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember
Held to maturity, estimated fair value [Abstract]
Securities held to maturity (at fair value)	139,326,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	142,168,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	139,326,000us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_CommercialMortgageBackedSecuritiesMember
Asset-Backed Securities and Structured Financial Products [Member]
Held to maturity, amortized cost [Abstract]
Securities held to maturity (at amortized cost)	0us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_AssetBackedSecuritiesMember	0us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_AssetBackedSecuritiesMember	0us-gaap_HeldToMaturitySecurities / us-gaap_DebtSecurityAxis = us-gaap_AssetBackedSecuritiesMember
Held to maturity, estimated fair value [Abstract]
Securities held to maturity (at fair value)	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_AssetBackedSecuritiesMember	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_AssetBackedSecuritiesMember	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_DebtSecurityAxis = us-gaap_AssetBackedSecuritiesMember
Collateralized Loan Obligations [Member]
Gross unrealized losses [Abstract]
Sale of collateralized loan obligations	135,600,000us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt / us-gaap_DebtSecurityAxis = us-gaap_CollateralizedLoanObligationsMember
Net gain on sale of collateralized loan obligations	1,300,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet / us-gaap_DebtSecurityAxis = us-gaap_CollateralizedLoanObligationsMember				389,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet / us-gaap_DebtSecurityAxis = us-gaap_CollateralizedLoanObligationsMember
Collateralized loan obligations sold during the first quarter of 2014					$ 25,900,000trmk_AvailableForSaleSecuritiesDebtSecuritiesSold / us-gaap_DebtSecurityAxis = us-gaap_CollateralizedLoanObligationsMember

X

- Definition

Accumulated appreciation or loss, in value of the total of available-for-sale securities at the end of an accounting period.

+ References

No definition available.

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- Definition

Amount of debt securities categorized neither as held-to-maturity nor trading and were sold during the first quarter of the reporting year.

+ References

No definition available.

+ Details

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- Definition

This item represents the aggregate fair value of investments categorized as available-for-sale and held-to-maturity securities. that have been in a continuous unrealized loss position for twelve months or longer.

+ References

No definition available.

+ Details

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- Definition

This item represents the aggregate fair value of investments categorized as available-for-sale and held-to-maturity securities. that have been in a continuous unrealized loss position for less than twelve months.

+ References

No definition available.

+ Details

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- Definition

This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for twelve months or longer for those securities which are categorized as available-for-sale and held-to-maturity securities.

+ References

No definition available.

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- Definition

This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for less than twelve months for those securities which are categorized as available-for-sale and held-to-maturity securities.

+ References

No definition available.

+ Details

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- Definition

Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities at date of transfer.

+ References

No definition available.

+ Details

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- Definition

Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities at date of transfer.

+ References

No definition available.

+ Details

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- Definition

Securities pledged to collateralize agreements The carrying value as of the balance sheet date of securities pledged and securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo.

+ References

No definition available.

+ Details

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- Definition

Pledged securities to the discount window providing additional contingency funding to collateralize agreements.

+ References

No definition available.

+ Details

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- Definition

The cash inflow associated with the sale and calls of debt and equity securities classified as available-for-sale securities.

+ References

No definition available.

+ Details

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- Definition

The cash inflow associated with the maturity calls (requests for early payments) of debt securities designated as held-to-maturity.

+ References

No definition available.

+ Details

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- Definition

This item represents the amount of securities categorized as available-for-sale being transferred to the held-to-maturity securities category.

+ References

No definition available.

+ Details

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Total debt securities, excluding mortgage-back-securities, grouped by maturity dates, at cost, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments, as defined), and fair value hedge accounting adjustments, if any, which are classified neither as held-to-maturity nor trading securities.

+ References

No definition available.

+ Details

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- Definition

Total investments in debt securities, excluding mortgage-back-securities, which are categorized as held-to-maturity. The held-to-maturity category is for those securities that the entity has the positive intent and ability to hold until maturity.

+ References

No definition available.

+ Details

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- Definition

This item represents the aggregate fair value of investments in an unrealized loss position which are categorized as available-for-sale and held-to-maturity securities.

+ References

No definition available.

+ Details

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- Definition

Total investments in debt and equity securities, excluding mortgage-back-securities, which are categorized neither as held-to-maturity nor trading.

+ References

No definition available.

+ Details

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- Definition

Total debt securities, excluding mortgage-back-securities, grouped by maturity dates, at fair value, which are categorized as held-to-maturity.

+ References

No definition available.

+ Details

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- Definition

This item represents the excess of amortized cost basis over fair value of securities in a loss position and which are categorized as available-for-sale and held-to-maturity securities.

+ References

No definition available.

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- Definition

Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 14A

-URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580



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-Name Accounting Standards Codification

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

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Amount of held-to-maturity debt securities at fair value that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the fair value over several maturity groupings.

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