Loans (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses, Period Increase (Increase)	$ 5,000	$ 19,000
Loans and Leases Receivable, Loans in Process	111,450,000		$ 115,972,000
Consumer Portfolio Segment [Member]
Loans and Leases Receivable, Loans in Process	741,000
Troubled Debt Restructuring [Member]
Financing Receivable, Modifications, Recorded Investment	20,400,000		21,700,000
Specified Reserves, Provision for Troubled Debt Restructurings	686,000		751,000
Loans and Leases Receivable, Impaired, Commitment to Lend	769,000		$ 242,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	$ 6,600,000