2.2.0.25truefalse06068 - Disclosure - Loans and Allowance for Loan Losses (Details Textual)truefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $ThreeMonthsEnded_31March2011http://www.sec.gov/CIK0000921847duration2011-01-01T00:00:002011-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2falsefalseUSDfalsefalse10/1/2010 - 12/31/2010 USD ($) $ThreeMonthsEnded_31Dec2010http://www.sec.gov/CIK0000921847duration2010-10-01T00:00:002010-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3falsefalseUSDfalsefalse1/1/2010 - 3/31/2010 USD ($) USD ($) / shares $ThreeMonthsEnded_31March2010http://www.sec.gov/CIK0000921847duration2010-01-01T00:00:002010-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$4falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010http://www.sec.gov/CIK0000921847duration2010-01-01T00:00:002010-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0us-gaap_MortgageLoansOnRealEstateLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseMortgage Loans on Real Estate [Line Items]3false0hcbk_TotalFirstMortgageLoanshcbkfalsedebitinstantTotal first mortgage loans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse3004475600030044756000falsetruefalsefalsefalse2truefalsefalse3060627000030606270000falsetruefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse3060627000030606270000falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal first mortgage loans.No authoritative reference available.falsefalseInterest-only loans included in loan portfolio4false0hcbk_PrincipalBalanceOfLoansWithPaymentPlanshcbkfalsedebitinstantPrincipal Balance Of Loans With Payment Plans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse4610000046100000falsefalsefalsefalsefalse2truefalsefalse8130000081300000falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse8130000081300000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryPrincipal Balance Of Loans With Payment Plans.No authoritative reference available.falsefalsePrincipal balance of loans with payment plans5false0us-gaap_LoansAndLeasesReceivableImpairedTroubledDebtRestructuringAmountus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1450000014500000falsefalsefalsefalsefalse2truefalsefalse1110000011100000falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse1110000011100000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryReflects the carrying amount of loans with terms that have been modified because of the inability of the borrower, for financial reasons, to comply with the terms of the original loan agreement.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 8 -Subparagraph j(ii) -Subsection I Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 15 -Paragraph 40 falsefalseLoans modified in a troubled debt restructuring6false0us-gaap_LoansAndLeasesReceivableDescriptionus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00We evaluate the classification of our one-to four- family mortgage loans, consumer loans and other loans primarily on a pooled basis by delinquency. Loans that are past due 60 to 89 days are classified as special mention and loans that are past due 90 days or more are classified as substandard. We generally obtain updated valuations for one- to four- family mortgage loans by the time a loan becomes 180 days past due.falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDescribes the major category and subcategories of loans held, any unusual risk concentration relating thereto, and the related loans receivable carrying amounts as of the balance sheet date. Such descriptions may include information pertaining to: (i) type of borrower, (ii) purpose of the loan, (iii) loan maturity, (iv) credit and other risk associated with the loan, and (v) other terms of importance (secured or unsecured, variable or fixed interest).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph e Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph a, b -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 8 -Subparagraph a, b -Subsection I falsefalseDescription related to classification of major category and sub categories of loans held7false0hcbk_PercentageOfTotalLoansWithinNewYorkMetropolitanAreahcbkfalsenainstantPercentage of total loans within the New York metropolitan area.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.7910.791falsefalsefalsefalsefalse2truetruefalse0.7840.784falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4truetruefalse0.7840.784falsefalsefalsefalsefalseOtherus-types:percentItemTypepurePercentage of total loans within the New York metropolitan area.No authoritative reference available.falsefalsePercentage of total loans within the New York metropolitan area8false0hcbk_InitialTermsOfInterestOnlyLoansOriginatingAsAdjustableRateMortgageLoanshcbkfalsenadurationInitial terms of interest-only loans originating as adjustable-rate mortgage loans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse005, 7 or 10 yearsfalsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInitial terms of interest-only loans originating as adjustable-rate mortgage loans.No authoritative reference available.falsefalseInitial terms of interest-only loans originating as adjustable-rate mortgage loans9false0hcbk_LoansEligibleForLimitedDocumentationProcessinghcbkfalsenadurationLoans eligible for limited documentation processing .falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00ARM loans, interest-only first mortgage loans and 10-, 15-, 20-, 30- and 40-year fixed-rate loans to owner-occupied primary and second home applicantsfalsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLoans eligible for limited documentation processing .No authoritative reference available.falsefalseLoans eligible for limited documentation processing10false0hcbk_TermInYearsOfInterestOnlyLoansOfferedAsFixedRateLoanshcbkfalsenadurationTerm (in years) of interest-only loans offered as fixed-rate loans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse3030falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerTerm (in years) of interest-only loans offered as fixed-rate loans.No authoritative reference available.falsefalseTerm (in years) of interest-only loans offered as fixed-rate loans11false0hcbk_NumberOfYearsWithInterestOnlyPaymentsForInterestOnlyLoansOfferedAsFixedRateLoanshcbkfalsenadurationNumber of years with interest-only payments for interest-only loans offered as fixed-rate loans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1010falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNumber of years with interest-only payments for interest-only loans offered as fixed-rate loans.No authoritative reference available.falsefalseNumber of years with interest-only payments for interest-only loans offered as fixed-rate loans12false0us-gaap_LoansAndLeasesReceivableImpairedNonperformingAccrualOfInterestus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse183200000183200000falsefalsefalsefalsefalse2truefalsefalse179300000179300000falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse179300000179300000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryReflects the carrying amount of loans deemed to be questionable as to collection on which interest is continuing to be earned or accrued.No authoritative reference available.falsefalseNon-performing interest-only loans13false0hcbk_TermInYearsOfLoansOriginatingAsLimitedDocumentationLoanshcbkfalsenadurationTerm (in years) of loans originating as limited documentation loans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1515falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerTerm (in years) of loans originating as limited documentation loans.No authoritative reference available.falsefalseTerm (in years) of loans originating as limited documentation loans14false0hcbk_MaximumPercentageOfBorrowingsAvailableUnderLimitedDocumentationLoanshcbkfalsenadurationMaximum percentage of borrowings available under limited documentation loans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse0070% of the lower of the appraised value or purchase price of the propertyfalsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringMaximum percentage of borrowings available under limited documentation loans.No authoritative reference available.falsefalseMaximum percentage of borrowings available under limited documentation loans15false0hcbk_MaximumLoanAmountForLimitedDocumentationLoanshcbkfalsedebitdurationMaximum loan amount for limited documentation loans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse750000750000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryMaximum loan amount for limited documentation loans.No authoritative reference available.falsefalseMaximum loan amount for limited documentation loans16false0hcbk_MaximumLoanToValueRatioForMortgageLoansWithNoVerificationOfIncomehcbkfalsenadurationMaximum loan-to-value ratio for mortgage loans with no verification of income.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.600.60falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureMaximum loan-to-value ratio for mortgage loans with no verification of income.No authoritative reference available.falsefalseMaximum loan-to-value ratio for mortgage loans with no verification of income17false0hcbk_TotalAmountOfNonPerformingReducedDocumentationLoanshcbkfalsedebitinstantTotal amount of non-performing reduced-documentation loans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse163500000163500000falsefalsefalsefalsefalse2truefalsefalse149800000149800000falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse149800000149800000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal amount of non-performing reduced-documentation loans.No authoritative reference available.falsefalseTotal amount of non-performing reduced-documentation loans18false0hcbk_AllowanceForLoanLossesNetChargesOffshcbkfalsedebitdurationAllowance For Loan Losses Net Charges Offs.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-21291000-21291000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse-24244000-24244000falsefalsefalsefalsefalse4truefalsefalse-98500000-98500000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAllowance For Loan Losses Net Charges Offs.No authoritative reference available.falsefalseNet charge-offs19false0hcbk_AllowanceForLoansAndLeasesReceivableGainLossOnSalesPreviousChargeOffhcbkfalsedebitdurationAllowance for loans and leases receivable gain loss on sales previous charge off.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse55000005500000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAllowance for loans and leases receivable gain loss on sales previous charge off.No authoritative reference available.falsefalsePrevious charge-offs20false0hcbk_NumberOfLoansDisposedOfThroughForeclosureProcesshcbkfalsenadurationNumber of loans disposed of through foreclosure process.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse2929falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNumber of loans disposed of through foreclosure process.No authoritative reference available.falsefalseNumber of loans disposed through foreclosure process21false0us-gaap_LoansAndLeasesReceivableGainLossOnSalesNetus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse540000540000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryReflects the net positive or negative amount derived from subtracting from net proceeds of sale and the carrying amounts, net of allocated reserves, of financial assets transferred to third parties in transactions that qualify for sales treatment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph d falsefalseFinal gain on sale of loans disposed through foreclosure process22false0hcbk_WriteDownsOnForeclosedRealEstatehcbkfalsedebitdurationWrite downs on foreclosed real estate.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse13000001300000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryWrite downs on foreclosed real estate.No authoritative reference available.falsefalseWrite-downs on foreclosed real estate23false0hcbk_PercentageOfAverageLtvRatioOfNonPerformingLoanshcbkfalsenainstantPercentage of Average Ltv Ratio of Non Performing Loans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.7430.743falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepurePercentage of Average Ltv Ratio of Non Performing Loans.No authoritative reference available.falsefalsePercentage of average LTV ratio of non-performing loans24false0hcbk_PercentageOfAverageLtvRatioOfTotalMortgageLoanPortfoliohcbkfalsenainstantPercentage of Average Ltv Ratio of Total Mortgage Loan Portfolio.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.6060.606falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepurePercentage of Average Ltv Ratio of Total Mortgage Loan Portfolio.No authoritative reference available.falsefalsePercentage of average LTV ratio of total mortgage loan portfolio25false0hcbk_PercentageOfNonPerformingLoansWithinNewYorkMetropolitanAreahcbkfalsenainstantPercentage of non-performing loans within the New York metropolitan area.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.6960.696falsefalsefalsefalsefalse2truetruefalse0.7090.709falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4truetruefalse0.7090.709falsefalsefalsefalsefalseOtherus-types:percentItemTypepurePercentage of non-performing loans within the New York metropolitan area.No authoritative reference available.falsefalsePercentage of non-performing loans within the New York metropolitan area26false0hcbk_PercentageOfWeightedAverageLtvUsingAppraisedValuesAtTimeOfOriginationhcbkfalsenainstantPercentage of weighted average LTV using appraised values at the time of origination.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.6060.606falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepurePercentage of weighted average LTV using appraised values at the time of origination.No authoritative reference available.falsefalsePercentage of weighted average LTV in the one- to four-family mortgage loan portfolio27false0hcbk_NumberOfDaysToObtainNewCollateralValuesForLoanshcbkfalsenadurationNumber of days to obtain new collateral values for loans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse180180falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNumber of days to obtain new collateral values for loans.No authoritative reference available.falsefalseNumber of delinquency days before new collateral values for loans are obtained28false0hcbk_PercentageOfHousePricesDeclinedInMetropolitanAreahcbkfalsenainstantPercentage of House Prices declined in metropolitan area.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.230.23falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepurePercentage of House Prices declined in metropolitan area.No authoritative reference available.falsefalsePercentage decline of house prices in the New York metropolitan area (locally) from the peak of the market in 200629false0hcbk_PercentageOfHousePricesDeclinedNationwidehcbkfalsenainstantPercentage of house prices declined nationwide.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.310.31falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepurePercentage of house prices declined nationwide.No authoritative reference available.falsefalsePercentage decline of house prices in the New York metropolitan area (nationwide) from the peak of the market in 200630false0us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoansus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1270000012700000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryReflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 8 -Subparagraph j(ii) -Subsection I Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 15 -Paragraph 40 falsefalseInterest income on non-accrual loans that would have been recognized if interest had been recorded based upon original contract terms31false0hcbk_LoansHeldForSalehcbkfalsedebitinstantLoans held for sale.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryLoans held for sale.No authoritative reference available.falsefalseLoans held for sale32false0hcbk_PeriodInWhichLoansAreConsideredContractuallyPastDuehcbkfalsenadurationPeriod in which loans are considered contractually past due.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse0090 days or morefalsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPeriod in which loans are considered contractually past due.No authoritative reference available.falsefalsePeriod in which loans are considered contractually past due33false0us-gaap_LoansAndLeasesReceivableImpairedAllowanceForLoanLossesus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse49210004921000falsefalsefalsefalsefalse2truefalsefalse51460005146000falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse51460005146000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryReflects amount of allowance for credit losses pertaining to impaired loans.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 8 -Subparagraph j(ii) -Subsection I falsefalseAllowance for loan losses related to loans classified as impaired34false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://hcsbonline.com/role/loansandallowanceforloanlossesdetailstextuals1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalseUSDtruefalse{us-gaap_MortgageLoansOnRealEstateLoanTypeAxis} : One- to four-family, Interest-only [Member] 3/31/2011 USD ($) 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