$GCBC
GREENE COUNTY BANCORP INC Stock $gcbc

$gcbc Overview Financials Valuation SEC Filings Company Website

2020 Q2 Form 10-Q Financial Statement

#000114036120011091 Filed on May 08, 2020

Income Statement

Concept	2020 Q2	2020 Q1	2019 Q1
Revenue		$13.44M	$11.71M
YoY Change		14.77%
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	$170.0K	$180.0K	$160.0K
YoY Change	6.25%	12.5%	0.0%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$2.296M	$1.682M
YoY Change		36.5%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$5.350M	$4.614M	$5.200M
YoY Change	9.18%	-11.27%	13.29%
Income Tax	$650.0K	$563.0K	$844.0K
% Of Pretax Income	12.15%	12.2%	16.23%
Net Earnings	$4.700M	$4.051M	$4.356M
YoY Change	12.98%	-7.0%	18.37%
Net Earnings / Revenue		30.15%	37.21%
Basic Earnings Per Share		$0.47	$0.51
Diluted Earnings Per Share	$552.3K	$0.47	$0.51
COMMON SHARES
Basic Shares Outstanding	8.513M	8.531M	8.538M
Diluted Shares Outstanding		8.531M	8.538M

Balance Sheet

Concept	2020 Q2	2020 Q1	2019 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$40.46M	$77.81M	$88.42M
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	$13.66M	$13.37M	$13.20M
YoY Change	3.04%	1.26%	-1.49%
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	$1.677B	$1.584B	$1.274B
YoY Change	32.09%	24.39%	8.52%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$21.40M	$17.80M	$13.10M
YoY Change	43.62%	35.88%	22.43%
Deferred Revenue
YoY Change
Short-Term Debt	$17.90M	$4.000M
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$21.40M	$17.80M	$13.10M
YoY Change	43.62%	35.88%	22.43%
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	$21.40M	$17.80M	$13.10M
Total Long-Term Liabilities	$0.00	$0.00	$0.00
Total Liabilities	$1.548B	$1.460B	$1.166B
YoY Change	33.78%	25.31%	7.81%
SHAREHOLDERS EQUITY
Retained Earnings	$118.3M	$114.0M
YoY Change	16.2%
Common Stock	$861.0K	$861.0K
YoY Change	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$908.0K	$908.0K
YoY Change	227.8%
Treasury Stock Shares	$97.93K	$97.93K
Shareholders Equity	$128.8M	$124.0M	$108.3M
YoY Change
Total Liabilities & Shareholders Equity	$1.677B	$1.584B	$1.274B
YoY Change	32.09%	24.39%	8.52%

Cashflow Statement

Concept	2020 Q2	2020 Q1	2019 Q1
OPERATING ACTIVITIES
Net Income	$4.700M	$4.051M	$4.356M
YoY Change	12.98%	-7.0%	18.37%
Depreciation, Depletion And Amortization	$170.0K	$180.0K	$160.0K
YoY Change	6.25%	12.5%	0.0%
Cash From Operating Activities	$8.910M	$6.560M	$6.240M
YoY Change	37.5%	5.13%	15.56%
INVESTING ACTIVITIES
Capital Expenditures	-$470.0K	-$270.0K	-$50.00K
YoY Change	113.64%	440.0%	150.0%
Acquisitions
YoY Change
Other Investing Activities	-$129.3M	-$98.46M	-$22.49M
YoY Change	137.33%	337.79%	-66.65%
Cash From Investing Activities	-$129.8M	-$98.73M	-$22.54M
YoY Change	137.24%	338.02%	-66.58%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	83.50M	135.4M	72.76M
YoY Change	-884.04%	86.15%	-33.21%
NET CHANGE
Cash From Operating Activities	8.910M	6.560M	6.240M
Cash From Investing Activities	-129.8M	-98.73M	-22.54M
Cash From Financing Activities	83.50M	135.4M	72.76M
Net Change In Cash	-37.36M	43.27M	56.46M
YoY Change	-36.54%	-23.36%	20.41%
FREE CASH FLOW
Cash From Operating Activities	$8.910M	$6.560M	$6.240M
Capital Expenditures	-$470.0K	-$270.0K	-$50.00K
Free Cash Flow	$9.380M	$6.830M	$6.290M
YoY Change	40.0%	8.59%	16.05%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--06-30
	dei	Document Period End Date DocumentPeriodEndDate	2020-03-31
	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	GREENE COUNTY BANCORP INC
	dei	Entity Central Index Key EntityCentralIndexKey	0001070524
CY2020Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	8513414
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Type DocumentType	10-Q
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Shell Company EntityShellCompany	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Small Business EntitySmallBusiness	true
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CY2019Q2	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	3894000
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0
CY2019Q1	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0
CY2020Q1	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0
CY2019Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0
CY2020Q1	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	12938000
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	14964000
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	19000
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-34000
CY2020Q1	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-57000
CY2019Q1	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-25000
CY2019Q2	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	79000
CY2020Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	318000
CY2019Q2	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	56000
CY2020Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	38000
CY2020Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	1653000
CY2019Q2	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	8348000
CY2020Q1	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Amortized Cost Basis HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	200269000
CY2019Q2	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	13139000
CY2020Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	33496000
CY2020Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	382532000
CY2019Q2	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	304208000
CY2019Q2	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	4791000
CY2020Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	31843000
CY2020Q1	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	208464000
CY2020Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	17042000
CY2019Q2	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	9484000
CY2019Q2	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	23000
	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod	54000
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	6494000
CY2019Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1584000
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	11141000
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	29678000
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	10026000
CY2020Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	280000
CY2020Q1	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	33677000
CY2020Q1	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	53945000
CY2020Q1	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount	182263000
CY2020Q1	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	23326000
CY2020Q1	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	51143000
CY2020Q1	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	92123000
CY2020Q1	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	26321000
CY2020Q1	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	34000000
CY2019Q2	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	313613000
CY2020Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	399256000
CY2020Q1	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	190792000
CY2020Q1	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	94198000
CY2019Q2	us-gaap	Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions	41
CY2020Q1	us-gaap	Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions	135
CY2019Q1	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	4178000
CY2020Q1	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	3382000
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	3520000
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	4018000
	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod	66000
	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod	73000
CY2020Q1	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod	19000
CY2019Q1	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod	21000
CY2020Q1	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	1405000
	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	1519000
	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	1541000
CY2019Q1	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	1673000
CY2019Q1	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	2505000
CY2020Q1	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	1977000
	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	2477000
	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	2001000
	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	120000
CY2020Q1	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	31000
	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	139000
CY2019Q1	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	57000
CY2020Q1	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	1800000
CY2019Q2	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	2000000
CY2020Q1	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	1825000
CY2019Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	1894000
CY2020Q1	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	1800000
CY2019Q2	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	2000000
CY2019Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	1894000
CY2020Q1	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	1825000
CY2019Q1	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod	36000
	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod	66000
CY2020Q1	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod	12000
CY2020Q1	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	3625000
CY2019Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	3894000
CY2019Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	262000
CY2020Q1	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	241000
CY2020Q1	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	3625000
CY2019Q2	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	3894000
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	16129000
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	16409000
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	4614000
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	5200000
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2382000
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2809000
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	563000
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	844000
	us-gaap	Income Taxes Paid IncomeTaxesPaid	2473000
	us-gaap	Income Taxes Paid IncomeTaxesPaid	1904000
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	899000
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	762000
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	2687000
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	929000
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	308963000
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	114544000
	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	1653000
	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	1068000
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1944000
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	489000
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1583000
CY2019Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	546000
CY2020Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	626000
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1838000
CY2020Q1	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	9955000
CY2019Q1	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	8900000
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	25894000
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	29161000
CY2020Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	13437000
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	39242000
CY2019Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	11708000
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	34111000
CY2019Q1	us-gaap	Interest Expense InterestExpense	1682000
	us-gaap	Interest Expense InterestExpense	4433000
	us-gaap	Interest Expense InterestExpense	6690000
CY2020Q1	us-gaap	Interest Expense InterestExpense	2296000
CY2020Q1	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	57000
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	542000
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	196000
CY2019Q1	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	98000
CY2020Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	2239000
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	3891000
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	60304000
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	101264000
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	631000
CY2020Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	9716000
CY2019Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	9676000
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	29886000
	us-gaap	Interest Paid Net InterestPaidNet	6675000
	us-gaap	Net Income Loss NetIncomeLoss	13320000
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	32552000
CY2020Q1	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	178000
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	509000
CY2019Q1	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	197000
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	608000
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	4184000
CY2019Q1	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1418000
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	5129000
CY2020Q1	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1771000
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	28620000
	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	3151000
CY2020Q1	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	1327000
CY2019Q1	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	978000
	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	3832000
CY2020Q1	us-gaap	Interest Bearing Deposit Liabilities Domestic InterestBearingDepositLiabilitiesDomestic	1322688000
CY2019Q2	us-gaap	Interest Bearing Deposit Liabilities Domestic InterestBearingDepositLiabilitiesDomestic	1013100000
CY2020Q1	us-gaap	Interest Receivable InterestReceivable	7506000
CY2019Q2	us-gaap	Interest Receivable InterestReceivable	5853000
	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	433000
	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	396000
CY2020Q1	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	120000
CY2019Q1	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	145000
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	272000
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	217000
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1813000
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	282000
CY2020Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	166000
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	212000
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	217000
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	12346000
CY2019Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4005000
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	11160000
CY2020Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	670000
CY2020Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4412000
CY2020Q1	us-gaap	Liabilities Liabilities	1460479000
CY2019Q2	us-gaap	Liabilities Liabilities	1157093000
CY2020Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1584472000
CY2019Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1269462000
CY2019Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	13200000
CY2020Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	15205000
CY2018Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	12024000
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	13984000
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	12673000
CY2019Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	12846000
CY2020Q1	us-gaap	Loans And Leases Receivable Before Fees Gross LoansAndLeasesReceivableBeforeFeesGross	897961000
CY2019Q2	us-gaap	Loans And Leases Receivable Before Fees Gross LoansAndLeasesReceivableBeforeFeesGross	798105000
	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	218000
	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	160000
CY2020Q1	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	64000
CY2019Q1	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	31000
CY2020Q1	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	883735000
CY2019Q2	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	785738000
CY2019Q2	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	1600000
CY2020Q1	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	1300000
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	149000
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	141000
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	13000
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1826000
CY2019Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	585000
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1986000
	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family: 'Times New Roman'; font-size: 10pt;"><table cellpadding="0" cellspacing="0" class="DSPFListTable" style="width: 100%; font-family: 'Times New Roman'; font-size: 9pt;"><tr style="vertical-align: top;"><td style="vertical-align: top; width: 27pt;"><div style="text-align: justify;"><font style="font-size: 10pt; font-weight: bold;">(2)</font></div></td><td style="vertical-align: top; width: auto;"><div style="text-align: justify;"><font style="font-size: 10pt; font-weight: bold;">Nature of Operations</font></div></td></tr></table><div><br /></div><div style="text-align: justify; font-size: 10pt;">Greene County Bancorp, Inc.’s primary business is the ownership and operation of its subsidiaries, The Bank of Greene County and Greene Risk Management, Inc.  The Bank of Greene County has 16 full-service offices, an operations center and lending center located in its market area within the Hudson Valley and Capital District Regions of New York State.    The Bank of Greene County is primarily engaged in the business of attracting deposits from the general public in The Bank of Greene County’s market area, and investing such deposits, together with other sources of funds, in loans and investment securities.  Greene Risk Management, Inc. is a pooled captive insurance company, which provides additional insurance coverage for the Company and its subsidiaries related to the operations of the Company for which insurance may not be economically feasible.  The Bank of Greene County also owns and operates two subsidiaries, Greene County Commercial Bank and Greene Property Holdings, Ltd. Greene County Commercial Bank’s primary business is to attract deposits from and provide banking services to local municipalities. Greene Property Holdings, Ltd. is a real estate investment trust, which holds mortgages and notes which were originated through and serviced by The Bank of Greene County.</div></div>
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	15153000
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	17806000
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-267554000
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-60635000
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	298024000
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	107400000
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	4356000
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	4051000
CY2020Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1638000
	us-gaap	Net Income Loss NetIncomeLoss	14027000
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	2010000
	us-gaap	Noninterest Income NoninterestIncome	6708000
CY2020Q1	us-gaap	Noninterest Income NoninterestIncome	2126000
	us-gaap	Noninterest Income NoninterestIncome	6203000
CY2020Q1	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	106844000
CY2019Q2	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	107469000
	us-gaap	Noninterest Expense NoninterestExpense	20185000
CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	6486000
	us-gaap	Noninterest Expense NoninterestExpense	18694000
CY2020Q1	us-gaap	Noninterest Expense NoninterestExpense	7228000
CY2020Q1	us-gaap	Number Of Stores NumberOfStores	16
	us-gaap	Occupancy Net OccupancyNet	1287000
CY2019Q1	us-gaap	Occupancy Net OccupancyNet	471000
	us-gaap	Occupancy Net OccupancyNet	1403000
CY2020Q1	us-gaap	Occupancy Net OccupancyNet	496000
CY2020Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y5M5D
CY2020Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	63000
	us-gaap	Operating Lease Cost OperatingLeaseCost	205000
CY2020Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0252
	us-gaap	Operating Lease Payments OperatingLeasePayments	226000
CY2020Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	1647000
CY2019Q1	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0
	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0
	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0
CY2020Q1	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0
CY2019Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	181000
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	421000
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	398000
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	36000
CY2019Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	64000
	us-gaap	Other Operating Income OtherOperatingIncome	673000
CY2020Q1	us-gaap	Other Operating Income OtherOperatingIncome	250000
CY2019Q1	us-gaap	Other Operating Income OtherOperatingIncome	270000
	us-gaap	Other Operating Income OtherOperatingIncome	719000
CY2019Q2	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	0
CY2020Q1	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	4000000
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	421000
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	181000
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	398000
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	36000
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-563000
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-247000
CY2020Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	113993000
CY2019Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	101774000
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	164360000
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	62996000
	us-gaap	Payments Of Dividends PaymentsOfDividends	1644000
	us-gaap	Payments Of Dividends PaymentsOfDividends	1808000
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	50591000
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	121783000
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	650000
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	370000
	us-gaap	Payments To Acquire Restricted Certificates Of Deposit PaymentsToAcquireRestrictedCertificatesOfDeposit	1441000
	us-gaap	Payments To Acquire Restricted Certificates Of Deposit PaymentsToAcquireRestrictedCertificatesOfDeposit	735000
CY2020Q1	us-gaap	Pledged Financial Instruments Not Separately Reported Securities Pledged PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged	4500000
CY2019Q2	us-gaap	Pledged Financial Instruments Not Separately Reported Securities Pledged PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged	1500000
CY2020Q1	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2019Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2020Q1	us-gaap	Preferred Stock Value PreferredStockValue	0
CY2019Q2	us-gaap	Preferred Stock Value PreferredStockValue	0
CY2020Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000
CY2019Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000
CY2020Q1	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	4892000
CY2019Q2	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	3202000
	us-gaap	Proceeds From Bank Debt ProceedsFromBankDebt	0
	us-gaap	Proceeds From Bank Debt ProceedsFromBankDebt	4000000
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	65000
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	287000
CY2019Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0
CY2020Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	77974000
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	70520000
	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	13007000
	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	22873000
	us-gaap	Professional Fees ProfessionalFees	878000
	us-gaap	Professional Fees ProfessionalFees	892000
CY2019Q1	us-gaap	Professional Fees ProfessionalFees	280000
CY2020Q1	us-gaap	Professional Fees ProfessionalFees	274000
CY2019Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	13255000
CY2020Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	13366000
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2666000
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1058000
CY2020Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1425000
CY2019Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	350000
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1840000
CY2020Q1	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	0
CY2019Q2	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	53000
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	5500000
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	4500000
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	123993000
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	112369000
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	120546000
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	104121000
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	96191000
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	108265000
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	34000
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	215000
CY2019Q2	us-gaap	Treasury Stock Shares TreasuryStockShares	73526
CY2020Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	97926
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8537814
CY2020Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	594000
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	631000
CY2020Q1	us-gaap	Treasury Stock Value TreasuryStockValue	908000
CY2019Q2	us-gaap	Treasury Stock Value TreasuryStockValue	277000
CY2020Q1	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	979000
CY2019Q2	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	833000
	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family: 'Times New Roman'; font-size: 10pt;"><div style="text-align: justify; font-size: 10pt;">The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.  Actual results could materially differ from those estimates.  Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses and the assessment of other-than-temporary security impairment.</div><div><br /></div><div style="text-align: justify; font-size: 10pt;">While management uses available information to recognize losses on loans, future additions to the allowance for loan losses (the “Allowance”) may be necessary, based on changes in economic conditions, asset quality or other factors.  In addition, various regulatory authorities, as an integral part of their examination process, periodically review the Allowance.  Such authorities may require the Company to recognize additions to the Allowance based on their judgments of information available to them at the time of their examination.</div><div><br /></div><div><div style="text-align: justify; font-size: 10pt;">Greene County Bancorp, Inc. makes an assessment to determine whether there have been any events or economic circumstances to indicate that a security on which there is an unrealized loss is impaired on an other-than-temporary basis.  The Company considers many factors including the severity and duration of the impairment; the intent and ability of the Company to hold the security for a period of time sufficient for a recovery in value; recent events specific to the issuer or industry; and for debt securities, intent to sell the security, whether it is more likely than not we will be required to sell the security before recovery, whether loss is expected, external credit ratings and recent downgrades.  Securities on which there is an unrealized loss that is deemed to be other-than-temporary are written down to fair value through earnings.</div></div></div>
CY2020Q1	us-gaap	Variable Lease Cost VariableLeaseCost	10000
	us-gaap	Variable Lease Cost VariableLeaseCost	30000
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0
CY2020Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0
CY2019Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0
CY2019Q1	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	8537814
CY2020Q1	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	8531304
	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	8535391
	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	8537814
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8531304
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8537814
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8535391
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8535391
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8537814
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8537814
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8531304
CY2020Q1	gcbc	Number Of Subsidiaries NumberOfSubsidiaries	2
CY2019Q2	gcbc	Nonaccrual Loans With Recent History Of Delinquency Greater Than90 Days NonaccrualLoansWithRecentHistoryOfDelinquencyGreaterThan90Days	1800000
CY2020Q1	gcbc	Nonaccrual Loans With Recent History Of Delinquency Greater Than90 Days NonaccrualLoansWithRecentHistoryOfDelinquencyGreaterThan90Days	1600000
	gcbc	Interest Income That Was Recorded On Nonaccrual Loans During Period InterestIncomeThatWasRecordedOnNonaccrualLoansDuringPeriod	143000
CY2020Q1	gcbc	Interest Income That Was Recorded On Nonaccrual Loans During Period InterestIncomeThatWasRecordedOnNonaccrualLoansDuringPeriod	51000
CY2019Q1	gcbc	Interest Income That Was Recorded On Nonaccrual Loans During Period InterestIncomeThatWasRecordedOnNonaccrualLoansDuringPeriod	26000
	gcbc	Interest Income That Was Recorded On Nonaccrual Loans During Period InterestIncomeThatWasRecordedOnNonaccrualLoansDuringPeriod	81000
	gcbc	Securities Available For Sale Principal Payments On Securities SecuritiesAvailableForSalePrincipalPaymentsOnSecurities	2335000
	gcbc	Securities Available For Sale Principal Payments On Securities SecuritiesAvailableForSalePrincipalPaymentsOnSecurities	7329000
	gcbc	Securities Held To Maturities Principal Payments On Securities SecuritiesHeldToMaturitiesPrincipalPaymentsOnSecurities	20127000
	gcbc	Securities Held To Maturities Principal Payments On Securities SecuritiesHeldToMaturitiesPrincipalPaymentsOnSecurities	20488000
	gcbc	Proceeds From Payments Of Short Term Fhl Bank Borrowings Financing Activities ProceedsFromPaymentsOfShortTermFHLBankBorrowingsFinancingActivities	0
	gcbc	Proceeds From Payments Of Short Term Fhl Bank Borrowings Financing Activities ProceedsFromPaymentsOfShortTermFHLBankBorrowingsFinancingActivities	8000000
	gcbc	Proceeds From Maturities Of Long Term Certificates Of Deposit ProceedsFromMaturitiesOfLongTermCertificatesOfDeposit	245000
	gcbc	Proceeds From Maturities Of Long Term Certificates Of Deposit ProceedsFromMaturitiesOfLongTermCertificatesOfDeposit	245000
CY2020Q1	gcbc	Computer Software Supplies And Support ComputerSoftwareSuppliesAndSupport	285000
	gcbc	Computer Software Supplies And Support ComputerSoftwareSuppliesAndSupport	683000
	gcbc	Computer Software Supplies And Support ComputerSoftwareSuppliesAndSupport	791000
CY2019Q1	gcbc	Computer Software Supplies And Support ComputerSoftwareSuppliesAndSupport	260000
	gcbc	Interest Bearing Deposits And Federal Funds Sold InterestBearingDepositsAndFederalFundsSold	611000
CY2020Q1	gcbc	Interest Bearing Deposits And Federal Funds Sold InterestBearingDepositsAndFederalFundsSold	206000
	gcbc	Interest Bearing Deposits And Federal Funds Sold InterestBearingDepositsAndFederalFundsSold	274000
CY2019Q1	gcbc	Interest Bearing Deposits And Federal Funds Sold InterestBearingDepositsAndFederalFundsSold	215000
CY2020Q1	gcbc	Service Charges On Deposit Accounts ServiceChargesOnDepositAccounts	1034000
	gcbc	Service Charges On Deposit Accounts ServiceChargesOnDepositAccounts	3270000
	gcbc	Service Charges On Deposit Accounts ServiceChargesOnDepositAccounts	3103000
CY2019Q1	gcbc	Service Charges On Deposit Accounts ServiceChargesOnDepositAccounts	960000
	gcbc	E Commerce Fees ECommerceFees	102000
	gcbc	E Commerce Fees ECommerceFees	90000
CY2019Q1	gcbc	E Commerce Fees ECommerceFees	31000
CY2020Q1	gcbc	E Commerce Fees ECommerceFees	24000
	gcbc	Debit Card Fees DebitCardFees	2196000
	gcbc	Debit Card Fees DebitCardFees	1929000
CY2019Q1	gcbc	Debit Card Fees DebitCardFees	604000
CY2020Q1	gcbc	Debit Card Fees DebitCardFees	698000
CY2019Q2	gcbc	Federal Home Loan Bank Short Term Or Overnight Borrowings FederalHomeLoanBankShortTermOrOvernightBorrowings	8000000
CY2020Q1	gcbc	Federal Home Loan Bank Short Term Or Overnight Borrowings FederalHomeLoanBankShortTermOrOvernightBorrowings	0
	gcbc	Number Of Loan Portfolio Segments NumberOfLoanPortfolioSegments	4
CY2020Q1	gcbc	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	613000
CY2020Q1	gcbc	Financing Receivable Increase In Provision For Loan Losses To Reserve For Losses Resulting From Covid19 Pandemic FinancingReceivableIncreaseInProvisionForLoanLossesToReserveForLossesResultingFromCOVID19Pandemic	500000
CY2020Q1	gcbc	Debt Securities Available For Sale And Held To Maturity Amortized Cost DebtSecuritiesAvailableForSaleAndHeldToMaturityAmortizedCost	590479000
CY2019Q2	gcbc	Debt Securities Available For Sale And Held To Maturity Amortized Cost DebtSecuritiesAvailableForSaleAndHeldToMaturityAmortizedCost	425810000
CY2020Q1	gcbc	Debt Securities Available For Sale And Held To Maturity Fair Value DebtSecuritiesAvailableForSaleAndHeldToMaturityFairValue	608378000
CY2019Q2	gcbc	Debt Securities Available For Sale And Held To Maturity Fair Value DebtSecuritiesAvailableForSaleAndHeldToMaturityFairValue	436341000
CY2020Q2	gcbc	Financing Receivable Loan Deferral Program Number Of Loan Modification Requests Received FinancingReceivableLoanDeferralProgramNumberOfLoanModificationRequestsReceived	688
CY2019Q2	gcbc	Debt Securities Available For Sale And Held To Maturity Accumulated Unrecognized Gain DebtSecuritiesAvailableForSaleAndHeldToMaturityAccumulatedUnrecognizedGain	10630000
CY2020Q1	gcbc	Debt Securities Available For Sale And Held To Maturity Accumulated Unrecognized Gain DebtSecuritiesAvailableForSaleAndHeldToMaturityAccumulatedUnrecognizedGain	18414000
CY2019Q2	gcbc	Debt Securities Available For Sale And Held To Maturity Accumulated Unrecognized Loss DebtSecuritiesAvailableForSaleAndHeldToMaturityAccumulatedUnrecognizedLoss	99000
CY2020Q1	gcbc	Debt Securities Available For Sale And Held To Maturity Accumulated Unrecognized Loss DebtSecuritiesAvailableForSaleAndHeldToMaturityAccumulatedUnrecognizedLoss	515000
	gcbc	Number Of Categories Utilized Under Risk Management Approach Of Diversified Investing NumberOfCategoriesUtilizedUnderRiskManagementApproachOfDiversifiedInvesting	3
CY2020Q1	gcbc	Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear	16
CY2019Q2	gcbc	Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear	18
CY2019Q2	gcbc	Number Of Securities Unrealized Loss Position NumberOfSecuritiesUnrealizedLossPosition	42
CY2020Q1	gcbc	Number Of Securities Unrealized Loss Position NumberOfSecuritiesUnrealizedLossPosition	147
CY2020Q1	gcbc	Securities Continuous Unrealized Loss Positions Accumulated Loss SecuritiesContinuousUnrealizedLossPositionsAccumulatedLoss	515000
CY2019Q2	gcbc	Securities Continuous Unrealized Loss Positions Accumulated Loss SecuritiesContinuousUnrealizedLossPositionsAccumulatedLoss	99000
CY2019Q2	gcbc	Securities Continuous Unrealized Loss Positions Fair Value SecuritiesContinuousUnrealizedLossPositionsFairValue	13995000
CY2020Q1	gcbc	Securities Continuous Unrealized Loss Positions Fair Value SecuritiesContinuousUnrealizedLossPositionsFairValue	60998000
CY2020Q1	gcbc	Securities Continuous Unrealized Loss Position Accumulated Loss SecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	477000
CY2019Q2	gcbc	Securities Continuous Unrealized Loss Position Accumulated Loss SecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	43000
CY2020Q1	gcbc	Number Of Securities Unrealized Loss Position Twelve Months Or Longer NumberOfSecuritiesUnrealizedLossPositionTwelveMonthsOrLonger	16
CY2019Q2	gcbc	Number Of Securities Unrealized Loss Position Twelve Months Or Longer NumberOfSecuritiesUnrealizedLossPositionTwelveMonthsOrLonger	18
CY2020Q1	gcbc	Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value SecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	1653000
CY2019Q2	gcbc	Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value SecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	8348000
CY2020Q1	gcbc	Number Of Securities Unrealized Loss Position Less Than Twelve Months NumberOfSecuritiesUnrealizedLossPositionLessThanTwelveMonths	131
CY2019Q2	gcbc	Number Of Securities Unrealized Loss Position Less Than Twelve Months NumberOfSecuritiesUnrealizedLossPositionLessThanTwelveMonths	24
CY2020Q1	gcbc	Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear	118
CY2019Q2	gcbc	Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear	23
CY2020Q1	gcbc	Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	38000
CY2019Q2	gcbc	Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss SecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	56000
CY2019Q2	gcbc	Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value SecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	5647000
CY2020Q1	gcbc	Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value SecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	59345000

Files In Submission

Name	View Source	Status
0001140361-20-011091-index-headers.html	Edgar Link	pending
0001140361-20-011091-index.html	Edgar Link	pending
0001140361-20-011091.txt	Edgar Link	pending
0001140361-20-011091-xbrl.zip	Edgar Link	pending
ex31_1.htm	Edgar Link	pending
ex31_2.htm	Edgar Link	pending
ex32_1.htm	Edgar Link	pending
ex32_2.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
form10q.htm	Edgar Link	pending
gcbc-20200331.xml	Edgar Link	completed
gcbc-20200331.xsd	Edgar Link	pending
gcbc-20200331_cal.xml	Edgar Link	unprocessable
gcbc-20200331_def.xml	Edgar Link	unprocessable
gcbc-20200331_lab.xml	Edgar Link	unprocessable
gcbc-20200331_pre.xml	Edgar Link	unprocessable
image0.jpg	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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R63.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$GCBC
GREENE COUNTY BANCORP INC Stock $gcbc

2020 Q2 Form 10-Q Financial Statement

#000114036120011091 Filed on May 08, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GCBC GREENE COUNTY BANCORP INC Stock $gcbc

2020 Q2 Form 10-Q Financial Statement

#000114036120011091 Filed on May 08, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GCBC
GREENE COUNTY BANCORP INC Stock $gcbc