Loans (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses, Period Increase (Increase)	$ 16,000	$ 5,000	$ 21,000	$ 24,000
Loans and Leases Receivable, Loans in Process	136,563,000		136,563,000		$ 115,972,000
Consumer Portfolio Segment [Member]
Loans and Leases Receivable, Loans in Process	410,000		410,000		626,000
Troubled Debt Restructuring [Member]
Financing Receivable, Modifications, Recorded Investment	22,300,000		22,300,000		21,700,000
Specified Reserves, Provision for Troubled Debt Restructurings	654,000		654,000		751,000
Loans and Leases Receivable, Impaired, Commitment to Lend	$ 370,000		370,000		$ 242,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down			$ 6,400,000