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Real Estate Owned (Details) (USD $)
Mar. 31, 2015
Consumer mortgage loans collateralized by residential real estate, in process of foreclosure $ 123,000chfn_FinancingReceivableConsumerMortgageLoansCollateralizedbyResidentialRealEstateinProcessofForeclosure
1-4 family residential real estate  
Other real estate owned, foreclosed assets $ 1,000,000us-gaap_OtherRealEstateAndForeclosedAssets
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= chfn_A14FamilyResidentialRealEstateMember