Loans and Allowance for Loan Losses (Details Textual) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) Loan	Mar. 31, 2015 Loan	Dec. 31, 2015 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Current Loans | $	$ 367,678		$ 387,145
Period after which loans considered nonperforming	90 days
Number of loans modified as TDRs | Loan	0	0
Number of loans approved as TDRs, subsequently defaulted | Loan	0	0
90-day or less term commercial loans
Accounts Notes And Loans Receivable [Line Items]
Current Loans | $			$ 24,200
Financing receivables, maturity	First quarter of 2016