$TRST
TRUSTCO BANK CORP N Y Stock $trst

$trst Overview Financials Valuation SEC Filings Company Website

2020 Q2 Form 10-Q Financial Statement

#000114036120017684 Filed on August 06, 2020

Income Statement

Concept	2020 Q2	2019 Q4	2019 Q2
Revenue	$44.57M		$48.66M
YoY Change	-8.41%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.000M	$1.000M	$1.000M
YoY Change	0.0%	-28.57%	0.0%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$6.888M		$9.473M
YoY Change	-27.29%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$15.18M	$18.27M	$19.54M
YoY Change	-22.35%	-7.59%	-3.3%
Income Tax	$3.921M	$4.360M	$4.877M
% Of Pretax Income	25.84%	23.86%	24.95%
Net Earnings	$11.25M	$13.91M	$14.67M
YoY Change	-23.27%	-13.23%	-4.79%
Net Earnings / Revenue	25.25%		30.14%
Basic Earnings Per Share	$0.58		$0.15
Diluted Earnings Per Share	$0.58	$717.0K	$0.15
COMMON SHARES
Basic Shares Outstanding	19.29M	96.92M	96.82M
Diluted Shares Outstanding	19.29M		96.89M

Balance Sheet

Concept	2020 Q2	2019 Q4	2019 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$952.8M	$456.8M	$560.2M
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	$34.04M	$34.62M	$85.20M
YoY Change	-60.04%	-0.21%	140.0%
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	$5.677B	$5.221B	$5.228B
YoY Change	8.59%	5.29%	5.81%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$81.00M	$84.40M	$83.00M
YoY Change	-2.41%	156.53%	161.01%
Deferred Revenue
YoY Change
Short-Term Debt	$177.3M	$148.7M	$166.7M
YoY Change	6.35%	-8.17%	-8.76%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$81.00M	$84.40M	$83.00M
YoY Change	-2.41%	156.53%	161.01%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$0.00	$0.00	$0.00
YoY Change
TOTAL LIABILITIES
Total Short-Term Liabilities	$81.00M	$84.40M	$83.00M
Total Long-Term Liabilities	$0.00	$0.00	$0.00
Total Liabilities	$5.124B	$4.683B	$4.712B
YoY Change	8.73%	4.79%	5.42%
SHAREHOLDERS EQUITY
Retained Earnings	$299.2M	$288.1M
YoY Change		12.35%
Common Stock	$276.6M	$276.6M
YoY Change		-0.09%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$30.90M
YoY Change		-6.64%
Treasury Stock Shares		$3.283M
Shareholders Equity	$553.4M	$538.3M	$515.6M
YoY Change
Total Liabilities & Shareholders Equity	$5.677B	$5.221B	$5.228B
YoY Change	8.59%	5.29%	5.81%

Cashflow Statement

Concept	2020 Q2	2019 Q4	2019 Q2
OPERATING ACTIVITIES
Net Income	$11.25M	$13.91M	$14.67M
YoY Change	-23.27%	-13.23%	-4.79%
Depreciation, Depletion And Amortization	$1.000M	$1.000M	$1.000M
YoY Change	0.0%	-28.57%	0.0%
Cash From Operating Activities	$13.80M	$14.00M	$17.80M
YoY Change	-22.47%	-25.53%	-15.24%
INVESTING ACTIVITIES
Capital Expenditures	-$600.0K	-$1.500M	-$600.0K
YoY Change	0.0%	66.67%	-53.85%
Acquisitions
YoY Change
Other Investing Activities	-$2.600M	$13.70M	-$126.4M
YoY Change	-97.94%	-140.9%	188.58%
Cash From Investing Activities	-$3.200M	$12.30M	-$127.0M
YoY Change	-97.48%	-135.76%	181.6%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	406.1M	-20.20M	50.20M
YoY Change	708.96%	-137.55%	-872.31%
NET CHANGE
Cash From Operating Activities	13.80M	14.00M	17.80M
Cash From Investing Activities	-3.200M	12.30M	-127.0M
Cash From Financing Activities	406.1M	-20.20M	50.20M
Net Change In Cash	416.7M	6.100M	-59.00M
YoY Change	-806.27%	-84.03%	92.81%
FREE CASH FLOW
Cash From Operating Activities	$13.80M	$14.00M	$17.80M
Capital Expenditures	-$600.0K	-$1.500M	-$600.0K
Free Cash Flow	$14.40M	$15.50M	$18.40M
YoY Change	-21.74%	-21.32%	-17.49%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2020Q2	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	41665000
CY2019Q2	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	41432000
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	83728000
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	0-10592
	dei	Entity Registrant Name EntityRegistrantName	TRUSTCO BANK CORP NY
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NY
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	14-1630287
	dei	Entity Address City Or Town EntityAddressCityOrTown	GLENVILLE
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	12302
	dei	City Area Code CityAreaCode	518
	dei	Local Phone Number LocalPhoneNumber	377-3311
	dei	Security12b Title Security12bTitle	Common Stock, $1.00 par value
	dei	Trading Symbol TradingSymbol	TRST
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Entity Central Index Key EntityCentralIndexKey	0000357301
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
CY2020Q2	us-gaap	Other Real Estate Owned Valuation Technique Extensible List OtherRealEstateOwnedValuationTechniqueExtensibleList	us-gaap:MarketApproachValuationTechniqueMember
CY2020Q2	us-gaap	Other Real Estate Owned Valuation Technique Extensible List OtherRealEstateOwnedValuationTechniqueExtensibleList	us-gaap:MarketApproachValuationTechniqueMember
CY2019Q4	us-gaap	Other Real Estate Owned Valuation Technique Extensible List OtherRealEstateOwnedValuationTechniqueExtensibleList	us-gaap:MarketApproachValuationTechniqueMember
CY2019Q4	us-gaap	Other Real Estate Owned Valuation Technique Extensible List OtherRealEstateOwnedValuationTechniqueExtensibleList	us-gaap:MarketApproachValuationTechniqueMember
CY2020Q2	us-gaap	Other Real Estate Owned Measurement Input Extensible List OtherRealEstateOwnedMeasurementInputExtensibleList	us-gaap:MeasurementInputComparabilityAdjustmentMember
CY2020Q2	us-gaap	Other Real Estate Owned Measurement Input Extensible List OtherRealEstateOwnedMeasurementInputExtensibleList	us-gaap:MeasurementInputComparabilityAdjustmentMember
CY2019Q4	us-gaap	Other Real Estate Owned Measurement Input Extensible List OtherRealEstateOwnedMeasurementInputExtensibleList	us-gaap:MeasurementInputComparabilityAdjustmentMember
CY2019Q4	us-gaap	Other Real Estate Owned Measurement Input Extensible List OtherRealEstateOwnedMeasurementInputExtensibleList	us-gaap:MeasurementInputComparabilityAdjustmentMember
	dei	Document Period End Date DocumentPeriodEndDate	2020-06-30
	dei	Entity Shell Company EntityShellCompany	false
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	trst	Interest And Dividend Income Securities Corporate Debt Operating Available For Sale Securities InterestAndDividendIncomeSecuritiesCorporateDebtOperatingAvailableForSaleSecurities	726000
CY2020Q2	us-gaap	Interest And Dividend Income Securities Available For Sale InterestAndDividendIncomeSecuritiesAvailableForSale	2357000
CY2019Q2	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	367000
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	4914000
CY2019Q2	trst	Fdic And Other Insurance Expense FDICAndOtherInsuranceExpense	598000
	trst	Fdic And Other Insurance Expense FDICAndOtherInsuranceExpense	903000
	trst	Fdic And Other Insurance Expense FDICAndOtherInsuranceExpense	1246000
CY2020Q2	trst	Other Real Estate Income Expense Net OtherRealEstateIncomeExpenseNet	-32000
CY2019Q2	trst	Other Real Estate Income Expense Net OtherRealEstateIncomeExpenseNet	210000
	trst	Other Real Estate Income Expense Net OtherRealEstateIncomeExpenseNet	162000
CY2020Q2	trst	Interest And Dividend Income Securities Us Government Sponsored Enterprises Available For Sale InterestAndDividendIncomeSecuritiesUSGovernmentSponsoredEnterprisesAvailableForSale	106000
CY2019Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	48198000
CY2019Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	408648000
CY2020Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	952836000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	456846000
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	trst	Dividends Income Federal Reserve Bank And Federal Home Loan Bank Stock DividendsIncomeFederalReserveBankAndFederalHomeLoanBankStock	284000
CY2020Q2	trst	Interest Income On Federal Funds Sold And Other Short Term Investments InterestIncomeOnFederalFundsSoldAndOtherShortTermInvestments	193000
CY2019Q2	trst	Interest Income On Federal Funds Sold And Other Short Term Investments InterestIncomeOnFederalFundsSoldAndOtherShortTermInvestments	3282000
	trst	Interest Income On Federal Funds Sold And Other Short Term Investments InterestIncomeOnFederalFundsSoldAndOtherShortTermInvestments	1460000
	trst	Interest And Dividend Income Securities State And Municipal Available For Sale InterestAndDividendIncomeSecuritiesStateAndMunicipalAvailableForSale	3000
	trst	Interest And Dividend Income Securities State And Municipal Available For Sale InterestAndDividendIncomeSecuritiesStateAndMunicipalAvailableForSale	4000
CY2020Q2	trst	Interest And Dividend Income Securities Mortgage Backed Available For Sale InterestAndDividendIncomeSecuritiesMortgageBackedAvailableForSale	1527000
CY2019Q2	trst	Interest And Dividend Income Securities Mortgage Backed Available For Sale InterestAndDividendIncomeSecuritiesMortgageBackedAvailableForSale	2152000
	trst	Interest And Dividend Income Securities Mortgage Backed Available For Sale InterestAndDividendIncomeSecuritiesMortgageBackedAvailableForSale	3640000
CY2020Q2	trst	Interest And Dividend Income Securities Corporate Debt Operating Available For Sale Securities InterestAndDividendIncomeSecuritiesCorporateDebtOperatingAvailableForSaleSecurities	488000
CY2019Q2	trst	Interest And Dividend Income Securities Corporate Debt Operating Available For Sale Securities InterestAndDividendIncomeSecuritiesCorporateDebtOperatingAvailableForSaleSecurities	272000
	trst	Interest And Dividend Income Securities Corporate Debt Operating Available For Sale Securities InterestAndDividendIncomeSecuritiesCorporateDebtOperatingAvailableForSaleSecurities	480000
CY2020Q2	trst	Interest And Dividend Income Sba Guaranteed Participation Securities Available For Sale InterestAndDividendIncomeSBAGuaranteedParticipationSecuritiesAvailableForSale	229000
CY2019Q2	trst	Interest And Dividend Income Sba Guaranteed Participation Securities Available For Sale InterestAndDividendIncomeSBAGuaranteedParticipationSecuritiesAvailableForSale	289000
	trst	Interest And Dividend Income Sba Guaranteed Participation Securities Available For Sale InterestAndDividendIncomeSBAGuaranteedParticipationSecuritiesAvailableForSale	474000
	trst	Interest And Dividend Income Sba Guaranteed Participation Securities Available For Sale InterestAndDividendIncomeSBAGuaranteedParticipationSecuritiesAvailableForSale	586000
CY2019Q2	trst	Interest And Dividend Income Other Available For Sale Securities InterestAndDividendIncomeOtherAvailableForSaleSecurities	5000
	trst	Interest And Dividend Income Other Available For Sale Securities InterestAndDividendIncomeOtherAvailableForSaleSecurities	11000
	trst	Interest And Dividend Income Other Available For Sale Securities InterestAndDividendIncomeOtherAvailableForSaleSecurities	10000
CY2020Q2	trst	Interest And Dividend Income Securities Residential Mortgage Backed Held To Maturity InterestAndDividendIncomeSecuritiesResidentialMortgageBackedHeldToMaturity	162000
CY2019Q2	trst	Interest And Dividend Income Securities Residential Mortgage Backed Held To Maturity InterestAndDividendIncomeSecuritiesResidentialMortgageBackedHeldToMaturity	209000
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CY2020Q2	trst	Dividends Income Federal Reserve Bank And Federal Home Loan Bank Stock DividendsIncomeFederalReserveBankAndFederalHomeLoanBankStock	192000
CY2019Q2	trst	Dividends Income Federal Reserve Bank And Federal Home Loan Bank Stock DividendsIncomeFederalReserveBankAndFederalHomeLoanBankStock	199000
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CY2020Q2	us-gaap	Interest Expense Negotiable Order Of Withdrawal Now Deposits InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits	26000
CY2019Q2	us-gaap	Interest Expense Negotiable Order Of Withdrawal Now Deposits InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits	94000
	trst	Interest And Dividend Income Securities Us Government Sponsored Enterprises Available For Sale InterestAndDividendIncomeSecuritiesUSGovernmentSponsoredEnterprisesAvailableForSale	1604000
CY2020Q2	trst	Interest And Dividend Income Securities State And Municipal Available For Sale InterestAndDividendIncomeSecuritiesStateAndMunicipalAvailableForSale	2000
CY2019Q2	trst	Interest And Dividend Income Securities State And Municipal Available For Sale InterestAndDividendIncomeSecuritiesStateAndMunicipalAvailableForSale	3000
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CY2020Q2	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	3772175
	us-gaap	Net Income Loss NetIncomeLoss	24567000
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CY2020Q2	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	34396000
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	us-gaap	Net Income Loss NetIncomeLoss	29225000
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	1989000
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	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	158000
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	us-gaap	Noninterest Income NoninterestIncome	8760000
CY2020Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	11648000
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	us-gaap	Labor And Related Expense LaborAndRelatedExpense	23021000
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	23162000
CY2020Q2	us-gaap	Occupancy Net OccupancyNet	4385000
CY2019Q2	us-gaap	Occupancy Net OccupancyNet	4006000
	us-gaap	Occupancy Net OccupancyNet	8691000
	us-gaap	Occupancy Net OccupancyNet	8173000
CY2020Q2	us-gaap	Equipment Expense EquipmentExpense	1606000
CY2019Q2	us-gaap	Equipment Expense EquipmentExpense	1709000
	us-gaap	Equipment Expense EquipmentExpense	3408000
	us-gaap	Equipment Expense EquipmentExpense	3611000
CY2019Q2	us-gaap	Professional Fees ProfessionalFees	1568000
	us-gaap	Professional Fees ProfessionalFees	3218000
CY2020Q2	trst	Outsourced Services OutsourcedServices	1875000
CY2019Q2	trst	Outsourced Services OutsourcedServices	1875000
	trst	Outsourced Services OutsourcedServices	3950000
	trst	Outsourced Services OutsourcedServices	3800000
CY2020Q2	us-gaap	Advertising Expense AdvertisingExpense	601000
CY2019Q2	us-gaap	Advertising Expense AdvertisingExpense	778000
	us-gaap	Advertising Expense AdvertisingExpense	1089000
	us-gaap	Advertising Expense AdvertisingExpense	1563000
	us-gaap	Noninterest Income Other NoninterestIncomeOther	1004000
CY2020Q2	us-gaap	Noninterest Income NoninterestIncome	3426000
	us-gaap	Professional Fees ProfessionalFees	2663000
CY2020Q2	trst	Fdic And Other Insurance Expense FDICAndOtherInsuranceExpense	609000
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	2000
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	1155000
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0
	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-957000
	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-1038000
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	733000
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	996000
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-432000
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	528000
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1127000
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1647000
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-1137000
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-1469000
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	3775000
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	1129000
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	28342000
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	30354000
	trst	Proceeds From Sales And Calls Of Securities Available For Sale ProceedsFromSalesAndCallsOfSecuritiesAvailableForSale	183835000
	trst	Proceeds From Sales And Calls Of Securities Available For Sale ProceedsFromSalesAndCallsOfSecuritiesAvailableForSale	44450000
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	1904000
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	1754000
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	37854000
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	176045000
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	5000000
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	10052000
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	115972000
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	35385000
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	1238000
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	1951000
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2000
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1409000
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1346000
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	40419000
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-154797000
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	415291000
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	188020000
	us-gaap	Share Based Compensation ShareBasedCompensation	10000
	us-gaap	Share Based Compensation ShareBasedCompensation	-6000
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0
	us-gaap	Net Income Loss NetIncomeLoss	24567000
	us-gaap	Net Income Loss NetIncomeLoss	29225000
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.117
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.152
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.254
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0
CY2020Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	242000
CY2019Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	1864000
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	2729000
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	3058000
CY2020Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	685000
CY2019Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	5313000
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	7775000
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	8709000
CY2020Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	143000
CY2019Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	20000
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	309000
CY2020Q2	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	51000
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	68000
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-98000
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-167000
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4877000
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8227000
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	14667000
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.302
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.117
	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
CY2020Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	96432657
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	82685000
CY2019Q2	trst	Interest And Dividend Income Securities Us Government Sponsored Enterprises Available For Sale InterestAndDividendIncomeSecuritiesUSGovernmentSponsoredEnterprisesAvailableForSale	821000
	trst	Interest And Dividend Income Securities Us Government Sponsored Enterprises Available For Sale InterestAndDividendIncomeSecuritiesUSGovernmentSponsoredEnterprisesAvailableForSale	527000
CY2020Q2	trst	Interest And Dividend Income Other Available For Sale Securities InterestAndDividendIncomeOtherAvailableForSaleSecurities	5000
CY2019Q2	us-gaap	Interest And Dividend Income Securities Available For Sale InterestAndDividendIncomeSecuritiesAvailableForSale	3542000
	us-gaap	Interest And Dividend Income Securities Available For Sale InterestAndDividendIncomeSecuritiesAvailableForSale	5381000
	us-gaap	Interest And Dividend Income Securities Available For Sale InterestAndDividendIncomeSecuritiesAvailableForSale	6391000
	us-gaap	Interest Expense Negotiable Order Of Withdrawal Now Deposits InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits	42000
	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	744000
CY2020Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2000000
CY2019Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-341000
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4000000
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-41000
CY2020Q2	us-gaap	Noninterest Income Other NoninterestIncomeOther	251000
	us-gaap	Noninterest Income Other NoninterestIncomeOther	515000
	us-gaap	Noninterest Income NoninterestIncome	9551000
CY2020Q2	us-gaap	Professional Fees ProfessionalFees	1182000
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	15175000
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9521000
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	11254000
CY2020Q2	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-49000
CY2019Q2	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-82000
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	8535000
CY2020Q2	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	908110000
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	148666000
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	19544000
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	13178000
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	427229000
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	180889000
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	495990000
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	56446000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	456846000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	503709000
CY2020Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	952836000
CY2019Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	560155000
	us-gaap	Interest Paid Net InterestPaidNet	15378000
	us-gaap	Interest Paid Net InterestPaidNet	16626000
	us-gaap	Income Taxes Paid IncomeTaxesPaid	6887000
	us-gaap	Income Taxes Paid IncomeTaxesPaid	8332000
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	434000
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	2712000
	trst	Increase Decrease In Dividends Payable IncreaseDecreaseInDividendsPayable	214000
	trst	Increase Decrease In Dividends Payable IncreaseDecreaseInDividendsPayable	11000
CY2020Q2	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax	10504000
CY2019Q2	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax	11767000
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-2729000
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-3058000
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-407000
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-235000
	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	107000
	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	61000
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	35000
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3493000
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	35000
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	13181000
CY2020Q2	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	141000
CY2019Q2	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	76000
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	300000
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	174000
CY2020Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	544000
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	5237000
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	7475000
CY2020Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	11798000
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	19904000
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	32042000
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	37760000
CY2020Q2	us-gaap	Cash And Due From Banks CashAndDueFromBanks	44726000
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	573823000
CY2019Q4	us-gaap	Deposits Deposits	4450016000
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	100204832
CY2020Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5677003000
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.068125
CY2019Q2	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	26000
	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	107000
	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	61000
CY2020Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	100204832
CY2019Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	4131
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.068125
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4000000
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1880000
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1313000
	trst	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	-3130000
	trst	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	-2983000
	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	380000
	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	230000
	us-gaap	Proceeds From Sale Of Federal Reserve Stock ProceedsFromSaleOfFederalReserveStock	4057000
	us-gaap	Proceeds From Sale Of Federal Reserve Stock ProceedsFromSaleOfFederalReserveStock	0
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	28612000
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	4853000
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0
	us-gaap	Net Income Loss NetIncomeLoss	29225000
	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	0
	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	1194000
	us-gaap	Net Income Loss NetIncomeLoss	24567000
CY2020Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	96433000
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	96891000
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	96593000
CY2020Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	421807000
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.152
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.254
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.302
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.117
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.151
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.254
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.302
	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	0
CY2020Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	11105000
CY2020Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	210000
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	432702000
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	573432000
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2811000
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	2420000
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	573823000
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	15124000
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	15267000
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	38747000
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	39950000
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	18000
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	18000
CY2020Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	421807000
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	432702000
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	3230000
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	13000
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	197000
CY2020Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	8033000
CY2020Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	210000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	140557000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1201000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1219000
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	384382000
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	2420000
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	96857000
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.117
	trst	Proceeds From Calls Paydowns Of Available For Sale Securities ProceedsFromCallsPaydownsOfAvailableForSaleSecurities	44450000
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	5000000
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	10052000
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	1155000
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0
CY2020Q2	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	16633000
CY2020Q2	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0
CY2020Q2	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	16633000
CY2020Q2	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	17878000
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	0
CY2020Q2	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	0
	trst	Held To Maturity Securities Sales And Transferred Security HeldToMaturitySecuritiesSalesAndTransferredSecurity	0
CY2020Q2	trst	Held To Maturity Securities Sales And Transferred Security HeldToMaturitySecuritiesSalesAndTransferredSecurity	0
	trst	Held To Maturity Securities Sales And Transferred Security HeldToMaturitySecuritiesSalesAndTransferredSecurity	0
CY2020Q2	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0
CY2019Q2	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0
CY2020Q2	trst	Proceeds From Calls Paydowns Of Available For Sale Securities ProceedsFromCallsPaydownsOfAvailableForSaleSecurities	85472000
CY2019Q2	trst	Proceeds From Calls Paydowns Of Available For Sale Securities ProceedsFromCallsPaydownsOfAvailableForSaleSecurities	28409000
CY2020Q2	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	0
CY2019Q2	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	52000
CY2020Q2	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0
CY2019Q2	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0
CY2020Q2	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	17878000
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	18618000
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	1062000
CY2019Q2	trst	Held To Maturity Securities Sales And Transferred Security HeldToMaturitySecuritiesSalesAndTransferredSecurity	0
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	29219000
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0
	trst	Proceeds From Calls Paydowns Of Available For Sale Securities ProceedsFromCallsPaydownsOfAvailableForSaleSecurities	154616000
CY2020Q2	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	1245000
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	19680000
	dei	Document Type DocumentType	10-Q
	dei	Entity Address Address Line1 EntityAddressAddressLine1	5 SARNOWSKI DRIVE
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	432702000
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	11254000
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	14667000
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	4803000
CY2020Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	48712000
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	51475000
CY2019Q4	us-gaap	Other Assets OtherAssets	58876000
CY2020Q2	us-gaap	Assets Assets	5677003000
CY2019Q4	us-gaap	Assets Assets	5221322000
CY2020Q2	us-gaap	Demand Deposit Accounts DemandDepositAccounts	612960000
CY2019Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	463858000
CY2020Q2	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	1001592000
CY2019Q4	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	875672000
CY2020Q2	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1191682000
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	96580000
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	96784000
CY2020Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	4000
CY2019Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	69000
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	13000
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	73000
CY2020Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	96437000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	243825000
	trst	Other Real Estate Income Expense Net OtherRealEstateIncomeExpenseNet	186000
CY2020Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2058000
CY2019Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2447000
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4313000
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4810000
CY2020Q2	us-gaap	Noninterest Expense NoninterestExpense	23932000
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	24902000
	us-gaap	Noninterest Expense NoninterestExpense	48200000
	us-gaap	Noninterest Expense NoninterestExpense	49769000
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	32794000
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	38746000
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3921000
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.151
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.254
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.302
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	11254000
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	14667000
	us-gaap	Net Income Loss NetIncomeLoss	24567000
	us-gaap	Net Income Loss NetIncomeLoss	29225000
CY2020Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	927000
CY2019Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	7177000
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	11659000
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	11767000
CY2020Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0
CY2019Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	1155000
CY2020Q2	us-gaap	Other Assets OtherAssets	57155000
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	489871000
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	14558000
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3298000
CY2019Q1	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	5100
CY2019Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	35000
CY2019Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	6591000
CY2019Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	35000
CY2019Q1	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	86297
CY2019Q1	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	594000
CY2019Q1	trst	Adjustments To Additional Paid In Capital Share Based Compensation Requisite Services Period Recognition Value AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRequisiteServicesPeriodRecognitionValue	12000
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	501718000
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	14667000
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	5237000
CY2019Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	6598000
CY2019Q2	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	76443
CY2019Q2	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	600000
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6000
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	515630000
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	538257000
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	13313000
CY2020Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	544000
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	6931000
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.068125
CY2020Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	6827000
CY2020Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	489000
CY2020Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	3493000
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4000
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	548185000
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	11254000
CY2020Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.068125
CY2020Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	6568000
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6000
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	553421000
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	96822000
CY2020Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4177561000
CY2020Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	48144000
CY2020Q2	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	4129417000
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4062196000
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	44317000
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	4017879000
CY2020Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	21903000
CY2020Q2	trst	Other Real Estate Mortgage Loans OtherRealEstateMortgageLoans	26000
CY2020Q2	trst	Financing Receivable Recorded Investment Nonaccrual Status And Other Nonperforming Real Estate Mortgages FinancingReceivableRecordedInvestmentNonaccrualStatusAndOtherNonperformingRealEstateMortgages	21929000
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	20840000
CY2019Q4	trst	Other Real Estate Mortgage Loans OtherRealEstateMortgageLoans	29000
CY2019Q4	trst	Financing Receivable Recorded Investment Nonaccrual Status And Other Nonperforming Real Estate Mortgages FinancingReceivableRecordedInvestmentNonaccrualStatusAndOtherNonperformingRealEstateMortgages	20869000
CY2020Q2	trst	Other Real Estate Owned OtherRealEstateOwned	472000
CY2019Q4	trst	Other Real Estate Owned OtherRealEstateOwned	1200000
CY2020Q2	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	19410000
CY2020Q2	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	4158151000
CY2020Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4177561000
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	19180000
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	4043016000
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4062196000
CY2019	trst	Number Of Days Past Due NumberOfDaysPastDue	P90D
	trst	Number Of Days Past Due NumberOfDaysPastDue	P90D
CY2019Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	0
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	44317000
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	44317000
CY2020Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	20976000
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	4041220000
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4062196000
CY2020Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	20382000
CY2020Q2	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	21042000
CY2020Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	0
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	20644000
CY2020Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	46155000
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	71000
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	60000
CY2020Q2	trst	Financing Receivable Allowance Of Credit Losses Net Loans Charged Off FinancingReceivableAllowanceOfCreditLossesNetLoansChargedOff	11000
CY2020Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2000000
CY2020Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	48144000
CY2019Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	44671000
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	254000
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	289000
CY2019Q2	trst	Financing Receivable Allowance Of Credit Losses Net Loans Charged Off FinancingReceivableAllowanceOfCreditLossesNetLoansChargedOff	-35000
CY2019Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-341000
CY2019Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	44365000
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	44317000
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	291000
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	118000
	trst	Financing Receivable Allowance Of Credit Losses Net Loans Charged Off FinancingReceivableAllowanceOfCreditLossesNetLoansChargedOff	173000
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4000000
CY2020Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	48144000
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	44766000
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	742000
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	382000
	trst	Financing Receivable Allowance Of Credit Losses Net Loans Charged Off FinancingReceivableAllowanceOfCreditLossesNetLoansChargedOff	360000
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-41000
CY2019Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	44365000
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	0
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	48144000
CY2020Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	48144000
CY2020Q2	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	20382000
CY2020Q2	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	4157179000
CY2020Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4177561000
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	20976000
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	21578000
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	0
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	20963000
CY2020Q2	trst	Tdr S Classifications From Previously Performing Loans TdrSClassificationsFromPreviouslyPerformingLoans	10800000
CY2019Q4	trst	Tdr S Classifications From Previously Performing Loans TdrSClassificationsFromPreviouslyPerformingLoans	11100000
	trst	Deferral Period Of Past Due Loans DeferralPeriodOfPastDueLoans	P60M
	trst	Number Of Days Past Due When Loans Considered In Payment Default Under Modified Terms NumberOfDaysPastDueWhenLoansConsideredInPaymentDefaultUnderModifiedTerms	P90D
	trst	Number Of Days Past Due Loan Considered In Payment Default NumberOfDaysPastDueLoanConsideredInPaymentDefault	P30D
CY2019Q2	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0
CY2020Q2	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0
CY2020Q2	trst	Impaired Loans Included In Classified Loans ImpairedLoansIncludedInClassifiedLoans	808000
CY2019Q4	trst	Impaired Loans Included In Classified Loans ImpairedLoansIncludedInClassifiedLoans	816000
CY2019Q2	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	0
CY2020Q2	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	0
CY2019Q2	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	0
CY2020Q2	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	0
CY2020Q2	trst	Other Real Estate Owned Commercial Real Estate Fair Value Disclosure OtherRealEstateOwnedCommercialRealEstateFairValueDisclosure	358000
CY2020Q2	trst	Other Real Estate Owned Residential Real Estate Properties Fair Value Disclosure OtherRealEstateOwnedResidentialRealEstatePropertiesFairValueDisclosure	472000
CY2020Q2	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	23000
	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	103000
CY2020Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	20400000
CY2020Q2	trst	Collateral Dependent Impaired Financing Receivable Recorded Investment CollateralDependentImpairedFinancingReceivableRecordedInvestment	297000
	trst	Gross Charge Offs Residential Impaired Loans GrossChargeOffsResidentialImpairedLoans	77000
CY2020Q2	trst	Gross Charge Offs Residential Impaired Loans GrossChargeOffsResidentialImpairedLoans	0
CY2019Q4	trst	Other Real Estate Owned Commercial Real Estate Fair Value Disclosure OtherRealEstateOwnedCommercialRealEstateFairValueDisclosure	358000
CY2019Q4	trst	Other Real Estate Owned Residential Real Estate Properties Fair Value Disclosure OtherRealEstateOwnedResidentialRealEstatePropertiesFairValueDisclosure	1200000
CY2019	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	366000
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	21000000.0
CY2019Q4	trst	Collateral Dependent Impaired Financing Receivable Recorded Investment CollateralDependentImpairedFinancingReceivableRecordedInvestment	120000
CY2019	trst	Gross Charge Offs Residential Impaired Loans GrossChargeOffsResidentialImpairedLoans	22000
CY2020Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	952836000
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	432702000
CY2020Q2	trst	Debt Securities Held To Maturity Fair Value Disclosures DebtSecuritiesHeldToMaturityFairValueDisclosures	17878000
CY2020Q2	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	4218824000
CY2020Q2	trst	Interest Receivable Fair Value Disclosure InterestReceivableFairValueDisclosure	11648000
CY2020Q2	trst	Demand Deposit Accounts Fair Value Disclosure DemandDepositAccountsFairValueDisclosure	612960000
CY2020Q2	trst	Interest Bearing Deposit Fair Value Disclosure InterestBearingDepositFairValueDisclosure	4258640000
CY2020Q2	us-gaap	Shortterm Debt Fair Value ShorttermDebtFairValue	177278000
CY2020Q2	trst	Interest Payable Fair Value Disclosure InterestPayableFairValueDisclosure	1027000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	456846000
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	573823000
CY2019Q4	trst	Debt Securities Held To Maturity Fair Value Disclosures DebtSecuritiesHeldToMaturityFairValueDisclosures	19680000
CY2019Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	4078210000
CY2019Q4	trst	Interest Receivable Fair Value Disclosure InterestReceivableFairValueDisclosure	10915000
CY2019Q4	trst	Demand Deposit Accounts Fair Value Disclosure DemandDepositAccountsFairValueDisclosure	463858000
CY2019Q4	trst	Interest Bearing Deposit Fair Value Disclosure InterestBearingDepositFairValueDisclosure	3985252000
CY2019Q4	us-gaap	Shortterm Debt Fair Value ShorttermDebtFairValue	148666000
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	1155000
CY2019Q4	trst	Interest Payable Fair Value Disclosure InterestPayableFairValueDisclosure	1459000
CY2020Q2	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	685000
CY2020Q2	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	141000
CY2020Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	544000
CY2019Q2	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	5237000
CY2019Q2	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	0
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	5237000
	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	8630000
	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	1155000
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	7475000
	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	8535000
	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	0
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	8535000
CY2020Q2	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0
CY2019Q2	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0
CY2020Q2	trst	Other Non Interest Income OtherNonInterestIncome	293000
CY2019Q2	trst	Other Non Interest Income OtherNonInterestIncome	989000
	trst	Other Non Interest Income OtherNonInterestIncome	624000
	trst	Other Non Interest Income OtherNonInterestIncome	1402000
CY2020Q2	us-gaap	Noninterest Income NoninterestIncome	3426000
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	4914000
	us-gaap	Noninterest Income NoninterestIncome	8760000
	us-gaap	Noninterest Income NoninterestIncome	9551000
CY2020Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y
CY2020Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	1932000
CY2019Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	1930000
CY2020Q2	us-gaap	Variable Lease Cost VariableLeaseCost	675000
CY2019Q2	us-gaap	Variable Lease Cost VariableLeaseCost	509000
CY2020Q2	us-gaap	Lease Cost LeaseCost	2607000
CY2019Q2	us-gaap	Lease Cost LeaseCost	2439000
	us-gaap	Operating Lease Cost OperatingLeaseCost	3927000
	us-gaap	Operating Lease Cost OperatingLeaseCost	3821000
	us-gaap	Variable Lease Cost VariableLeaseCost	1155000
	us-gaap	Variable Lease Cost VariableLeaseCost	975000
	us-gaap	Lease Cost LeaseCost	5082000
	us-gaap	Operating Lease Payments OperatingLeasePayments	4010000
CY2020Q2	trst	Lessee Operating Lease Liability To Be Paid Due After Year Four LesseeOperatingLeaseLiabilityToBePaidDueAfterYearFour	28551000
	us-gaap	Lease Cost LeaseCost	4796000
	us-gaap	Operating Lease Payments OperatingLeasePayments	3906000
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	287000
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	54038000
CY2020Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y
CY2019Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y7M6D
CY2020Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0325
CY2019Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0330
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	4032000
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	8062000
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	7561000
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	7256000
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	7128000
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	62590000
CY2020Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	8880000
CY2020Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	53710000
CY2019Q2	us-gaap	Operating Leases Future Minimum Payments Remainder Of Fiscal Year OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear	3933000
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	7820000
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	7818000
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	7300000
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	6978000
CY2019Q2	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	32600000
CY2019Q2	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	66449000
CY2019Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	10212000
CY2019Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	56237000
CY2020Q1	trst	Reduction In Overnight Federal Funds Rate ReductionInOvernightFederalFundsRate	0.0050
CY2020Q1	trst	Reduction In Overnight Federal Funds Rate ReductionInOvernightFederalFundsRate	0.0100

Files In Submission

Name	View Source	Status
0001140361-20-017684-index-headers.html	Edgar Link	pending
0001140361-20-017684-index.html	Edgar Link	pending
0001140361-20-017684.txt	Edgar Link	pending
0001140361-20-017684-xbrl.zip	Edgar Link	pending
brhc10013941_10q.htm	Edgar Link	pending
brhc10013941_10q_htm.xml	Edgar Link	completed
brhc10013941_ex15.htm	Edgar Link	pending
brhc10013941_ex31a.htm	Edgar Link	pending
brhc10013941_ex31b.htm	Edgar Link	pending
brhc10013941_ex32.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
image00002.jpg	Edgar Link	pending
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report.css	Edgar Link	pending
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trst-20200630.xsd	Edgar Link	pending
trst-20200630_cal.xml	Edgar Link	unprocessable
trst-20200630_def.xml	Edgar Link	unprocessable
trst-20200630_lab.xml	Edgar Link	unprocessable
trst-20200630_pre.xml	Edgar Link	unprocessable

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2020 Q2 Form 10-Q Financial Statement

#000114036120017684 Filed on August 06, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TRST TRUSTCO BANK CORP N Y Stock $trst

2020 Q2 Form 10-Q Financial Statement

#000114036120017684 Filed on August 06, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TRST
TRUSTCO BANK CORP N Y Stock $trst