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Mortgage Banking Activities - Valuation Allowance for Mortgage Servicing Rights (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mortgage Banking [Abstract]    
Balance, beginning of year $ (58)ucfc_MortgageServicingRightsValuationAllowance  
Impairment charges (161)ucfc_MortgageServicingRightsImpairment (1)ucfc_MortgageServicingRightsImpairment
Balance, end of period $ (219)ucfc_MortgageServicingRightsValuationAllowance $ (1)ucfc_MortgageServicingRightsValuationAllowance