2.2.0.25truefalse06071 - Disclosure - Borrowed Funds (Details 1)truefalseIn Thousands, unless otherwise specifiedfalse1falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : Repurchase Agreements [Member] 1/1/2011 - 3/31/2011 USD ($) $ThreeMonthsEnded_31March2011_Securities_Sold_Under_Agreements_To_Repurchase_Memberhttp://www.sec.gov/CIK0000921847duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseRepurchase Agreements [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SecuritiesSoldUnderAgreementsToRepurchaseMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : Repurchase Agreements [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Securities_Sold_Under_Agreements_To_Repurchase_Memberhttp://www.sec.gov/CIK0000921847duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseRepurchase Agreements [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SecuritiesSoldUnderAgreementsToRepurchaseMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$1false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://hcsbonline.com/role/borrowedfundsdetails11falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse1falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : Repurchase Agreements [Member] 1/1/2011 - 3/31/2011 USD ($) $ThreeMonthsEnded_31March2011_Securities_Sold_Under_Agreements_To_Repurchase_Memberhttp://www.sec.gov/CIK0000921847duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseRepurchase Agreements [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SecuritiesSoldUnderAgreementsToRepurchaseMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : Repurchase Agreements [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Securities_Sold_Under_Agreements_To_Repurchase_Memberhttp://www.sec.gov/CIK0000921847duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseRepurchase Agreements [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SecuritiesSoldUnderAgreementsToRepurchaseMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseRepurchase Agreements [Member]2true0hcbk_AverageBalancesOfBorrowingsAndMaximumAmountOutstandingAtAnyMonthEndAbstracthcbkfalsenadurationAverage balances of borrowings and the maximum amount outstanding at any month end.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAverage balances of borrowings and the maximum amount outstanding at any month end.falsefalseAverage balances of borrowings and the maximum amount outstanding at any month end3false0hcbk_BorrowedFundsAverageOutstandingAmounthcbkfalsecreditdurationBorrowed Funds Average Outstanding Amount.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse1368719000013687190falsetruefalsefalsefalse2truefalsefalse1503411000015034110falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryBorrowed Funds Average Outstanding Amount.No authoritative reference available.truefalseAverage balance outstanding during the period4false0hcbk_BorrowedFundsMaximumMonthEndOutstandingAmounthcbkfalsecreditinstantBorrowed Funds Maximum Month End Outstanding Amountfalsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse1475000000014750000falsefalsefalsefalsefalse2truefalsefalse1510000000015100000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryBorrowed Funds Maximum Month End Outstanding AmountNo authoritative reference available.truefalseMaximum balance outstanding at any month-end during the period5false0hcbk_BorrowedFundsWeightedAverageRatehcbkfalsenadurationBorrowed Funds Weighted average rate.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruefalse0.04140.0414falsefalsefalsefalsefalse2truetruefalse0.0410.041falsefalsefalsefalsefalseOtherus-types:percentItemTypepureBorrowed Funds Weighted average rate.No authoritative reference available.truefalseWeighted average rate during the period6false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://hcsbonline.com/role/borrowedfundsdetails11falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : FHLB Advances [Member] 1/1/2011 - 3/31/2011 USD ($) $ThreeMonthsEnded_31March2011_Federal_Home_Loan_Bank_Advances_Memberhttp://www.sec.gov/CIK0000921847duration2011-01-01T00:00:002011-03-31T00:00:00falsefalseFHLB Advances [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FederalHomeLoanBankAdvancesMemberus-gaap_DebtInstrumentAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4falsefalseUSDtruefalse{us-gaap_DebtInstrumentAxis} : FHLB Advances [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Federal_Home_Loan_Bank_Advances_Memberhttp://www.sec.gov/CIK0000921847duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseFHLB Advances [Member]us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FederalHomeLoanBankAdvancesMemberus-gaap_DebtInstrumentAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseFHLB Advances [Member]7true0hcbk_AverageBalancesOfBorrowingsAndMaximumAmountOutstandingAtAnyMonthEndAbstracthcbkfalsenadurationAverage balances of borrowings and the maximum amount outstanding at any month end.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAverage balances of borrowings and the maximum amount outstanding at any month end.falsefalseAverage balances of borrowings and the maximum amount outstanding at any month end8false0hcbk_BorrowedFundsAverageOutstandingAmounthcbkfalsecreditdurationBorrowed Funds Average Outstanding Amount.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse1501983300015019833falsefalsefalsefalsefalse2truefalsefalse1487500000014875000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryBorrowed Funds Average Outstanding Amount.No authoritative reference available.truefalseAverage balance outstanding during the period9false0hcbk_BorrowedFundsMaximumMonthEndOutstandingAmounthcbkfalsecreditinstantBorrowed Funds Maximum Month End Outstanding Amountfalsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse1517500000015175000falsetruefalsefalsefalse2truefalsefalse1487500000014875000falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryBorrowed Funds Maximum Month End Outstanding AmountNo authoritative reference available.truefalseMaximum balance outstanding at any month-end during the period10false0hcbk_BorrowedFundsWeightedAverageRatehcbkfalsenadurationBorrowed Funds Weighted average rate.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruefalse0.0370.037falsefalsefalsefalsefalse2truetruefalse0.04040.0404falsefalsefalsefalsefalseOtherus-types:percentItemTypepureBorrowed Funds Weighted average rate.No authoritative reference available.truefalseWeighted average rate during the period210Borrowed Funds (Details 1) (USD $)ThousandsUnKnownUnKnownUnKnowntruetrue