Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Nov. 18, 2014	Dec. 31, 2013
Deferred tax assets:
Loan loss reserves	$ 6,190		$ 7,391
Postretirement benefits	1,066		1,162
Depreciation	625ucfc_DeferredTaxAssetsDepreciation		224ucfc_DeferredTaxAssetsDepreciation
Other real estate owned valuation	498		1,421
Tax credits carryforward	513		339
Securities impairment charges			153
Unrealized loss on securities available for sale	2,324		14,138
Interest on nonaccrual loans	943		758
Net operating loss carryforward	24,027		26,708
Purchase accounting adjustment	82		70
Accrued bonuses	459		456
Other	279us-gaap_DeferredTaxAssetsOther		71us-gaap_DeferredTaxAssetsOther
Less: Valuation allowance			(42,802)
Deferred tax assets	37,006us-gaap_DeferredTaxAssetsNet		10,089us-gaap_DeferredTaxAssetsNet
Deferred tax liabilities:
Deferred loan fees	321ucfc_DeferredTaxLiabilitiesLoanFees		405ucfc_DeferredTaxLiabilitiesLoanFees
Federal Home Loan Bank stock dividends	4,585		6,715
Mortgage servicing rights	1,917		2,079
FHLB prepayment penalty	1,332	3,900
Postretirement benefits accrual	493		640
Prepaid expenses	201		250
Deferred tax liabilities	8,849us-gaap_DeferredIncomeTaxLiabilities		10,089us-gaap_DeferredIncomeTaxLiabilities
Net deferred tax asset	$ 28,157us-gaap_DeferredTaxAssetsLiabilitiesNet

Deferred tax assets depreciation.

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Deferred tax assets purchase accounting changes in year.

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Deferred tax assets tax interest on non accrual loans.

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Deferred tax assets tax other real estate owned valuation.

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Deferred tax liabilities federal home loan bank stock dividends.

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Deferred tax liabilities loan fees.

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Deferred tax liability postretirement benefits accrual.

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Federal home loan bank advances general debt obligations disclosures prepayment penalty amount if prepaid.

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.

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The tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee bonuses.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from postretirement benefits.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from estimated impairment losses.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the provision for loan losses.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from unrealized losses on available-for-sale securities.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences from mortgage servicing rights.

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Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses.

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