v2.4.1.9
Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Deferred tax assets:    
Unrealized loss on investment $ 1,609us-gaap_DeferredTaxAssetsUnrealizedLossesOnTradingSecurities $ 1,337us-gaap_DeferredTaxAssetsUnrealizedLossesOnTradingSecurities
Net operating loss carryforward 4,650us-gaap_DeferredTaxAssetsOperatingLossCarryforwards 4,560us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Gross deferred tax asset 6,259us-gaap_DeferredTaxAssetsGross 5,897us-gaap_DeferredTaxAssetsGross
Deferred tax liabilities:    
Deferred state income taxes (185)bkfg_DeferredTaxLiabilitiesDeferredStateIncomeTaxes (164)bkfg_DeferredTaxLiabilitiesDeferredStateIncomeTaxes
Gross deferred tax liabilities (185)bkfg_DeferredTaxLiabilitiesUnrealizedGainOnInvestments (164)bkfg_DeferredTaxLiabilitiesUnrealizedGainOnInvestments
Net deferred tax asset 6,074bkfg_DeferredTaxAssetBeforeValuationAllowance 5,733bkfg_DeferredTaxAssetBeforeValuationAllowance
Valuation reserve (6,074)us-gaap_DeferredTaxAssetsValuationAllowance (5,733)us-gaap_DeferredTaxAssetsValuationAllowance
Deferred Tax Assets, Net $ 0us-gaap_DeferredTaxAssetsLiabilitiesNet $ 0us-gaap_DeferredTaxAssetsLiabilitiesNet