2.2.0.25falsefalse06084 - Disclosure - Fair Value Measurements(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$2falsefalseUSDfalsefalse1/1/2010 - 3/31/2010 USD ($) 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$3falsefalseUSDfalsefalse12/31/2010 USD ($) USD ($) / shares $BalanceAsOf_31Dec2010http://www.sec.gov/CIK0000921847instant2010-12-31T00:00:000001-01-01T00:00:00USDStandardhttp://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$3true0hcbk_FairValueMeasurementsAndDisclosuresTextualsAbstracthcbkfalsenadurationFair Value Measurements and Disclosures.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringFair Value Measurements and Disclosures.falsefalseFair Value Measurements and Disclosures (Textuals) [Abstract]4false0us-gaap_AvailableForSaleSecuritiesEquitySecuritiesus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse71220007122000falsetruefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse71480007148000falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryFor an unclassified balance sheet, this item represents equity securities categorized neither as held-to-maturity nor trading. Equity securities represent ownership interests or the right to acquire ownership interests in corporations and other legal entities which ownership interest is represented by shares of common or preferred stock (which is not mandatorily redeemable or redeemable at the option of the holder), convertible securities, stock rights, or stock warrants. Unrealized gains and losses related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain or loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 22 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 19 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 12 -Subparagraph b Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 86-40 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 13 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 16 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 3 -Subparagraph c falsefalseCarrying value of equity securities5false0hcbk_CommercialAndConstructionLoansEvaluatedForImpairmenthcbkfalsedebitinstantCommercial and construction loans evaluated for impairment.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1620000016200000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse1670000016700000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCommercial and construction loans evaluated for impairment.No authoritative reference available.falsefalseCommercial and construction loans evaluated for impairment6false0hcbk_AllowanceForLoanLossesRelatedToCommercialAndConstructionLoanshcbkfalsedebitinstantAllowance for loan losses related to non-performing commercial and construction loans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse49000004900000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse51000005100000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAllowance for loan losses related to non-performing commercial and construction loans.No authoritative reference available.falsefalseAllowance for loan losses related to commercial and construction loans7false0hcbk_ProvisionForLoanLossesRelatedToCommercialAndConstructionLoanshcbkfalsedebitdurationProvision for loan losses related to commercial and construction loans.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse219000219000falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryProvision for loan losses related to commercial and construction loans.No authoritative reference available.falsefalseProvision for loan losses related to commercial and construction loans8false0us-gaap_RealEstateAcquiredThroughForeclosureus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse4401100044011000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse4569300045693000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph f Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Chapter 11 -Paragraph 2, 9, 10, 11 -IssueDate 2006-05-01 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 falsefalseForeclosed real estate9false0hcbk_ChargeOffsToAllowanceForLoanLossesRelatedToLoansTransferredToForeclosedRealEstatehcbkfalsedebitdurationCharge-offs to allowance for loan losses related to loans transferred to foreclosed real estate.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse725000725000falsefalsefalsefalsefalse2truefalsefalse18000001800000falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCharge-offs to allowance for loan losses related to loans transferred to foreclosed real estate.No authoritative reference available.falsefalseCharge-offs to the allowance for loan losses10false0hcbk_WriteDownsAndNetLossOnSaleForeclosedRealEstatehcbkfalsedebitdurationWrite downs and net loss on sale related to foreclosed real estate that were charged to non-interest expense.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse776000776000falsetruefalsefalsefalse2truefalsefalse14000001400000falsetruefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryWrite downs and net loss on sale related to foreclosed real estate that were charged to non-interest expense.No 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