Mortgage Banking Activities - Key Economic Assumptions in Measuring Value of Mortgage Servicing Rights (Detail)	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Mortgage Banking [Abstract]
Weighted average prepayment rate	235ucfc_WeightedAveragePrepaymentRate	219ucfc_WeightedAveragePrepaymentRate
Weighted average life (in years)	3 years 6 months 18 days	3 years 7 months 10 days
Weighted average discount rate	8.00%	8.00%

Assumptions in measuring value of mortgage servicing rights weighted average discount rate.

No definition available.

Name:	ucfc_AssumptionsInMeasuringValueOfMortgageServicingRightsWeightedAverageDiscountRate
Namespace Prefix:	ucfc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant