Loans - Composition Of Net Loans Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	$ 719,690	$ 696,142
Unearned net loan origination fees	(890)	(885)
Allowance for loan losses	(6,797)	(6,696)
Net loans receivable	712,003	688,561
Mortgage loans serviced for the benefit of others	246	249
Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	35,906	40,280
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	35,662	25,360
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	485,617	479,227
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	161,543	150,237
Consumer And Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	$ 962	$ 1,038