Loans and Allowance for Loan Losses (Details 5) - Consumer loans [Member] - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Outstanding commercial and consumer loans which include loans on nonaccrual status
Current	$ 535,071	$ 476,962
30-59 days past due	649	1,075
60-89 days past due	432	1,126
Greater than 90 days		954
Total consumer loans	536,152	480,117
Real estate [Member]
Outstanding commercial and consumer loans which include loans on nonaccrual status
Current	310,665	271,284
30-59 days past due	249	681
60-89 days past due	357	131
Greater than 90 days		954
Total consumer loans	311,271	273,050
Home equity [Member]
Outstanding commercial and consumer loans which include loans on nonaccrual status
Current	163,309	154,821
30-59 days past due	345	325
60-89 days past due		995
Greater than 90 days
Total consumer loans	163,654	156,141
Construction [Member]
Outstanding commercial and consumer loans which include loans on nonaccrual status
Current	38,015	28,351
30-59 days past due
60-89 days past due
Greater than 90 days
Total consumer loans	38,015	28,351
Other [Member]
Outstanding commercial and consumer loans which include loans on nonaccrual status
Current	23,082	22,506
30-59 days past due	55	69
60-89 days past due	75
Greater than 90 days
Total consumer loans	$ 23,212	$ 22,575