Loans (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses, Period Increase (Increase)	$ 234,000	$ 27,000	$ 1,200,000
Troubled Debt Restructuring [Member]
Financing Receivable, Modifications, Recorded Investment	33,000,000	33,400,000
Specified Reserves, Provision for Troubled Debt Restructurings	1,100,000	1,200,000
Loans and Leases Receivable, Impaired, Commitment to Lend	69,000	300,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	8,300,000
Troubled Debt Restructuring [Member] | Subsequently Defaulted [Member]
Financing Receivable, Allowance for Credit Losses, Period Increase (Increase)	14,000	21,000	631,000
Loan And Lease Losses Charged Off	$ 176,000	$ 58,000	$ 1,500,000