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Deposits (Detail Textuals) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Deposits    
Minimum cash required $ 1,600,000us-gaap_MinimumNetCapitalRequiredForEntity1 $ 1,300,000us-gaap_MinimumNetCapitalRequiredForEntity1
Average compensating balances $ 408,000us-gaap_CompensatingBalanceAmount $ 315,000us-gaap_CompensatingBalanceAmount