Income Taxes (Schedule of Gross Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Allowance for loan losses	$ 6,362	$ 6,225
Defined benefit pension obligations	420	1,767
Deferred compensation	3,688	3,334
Deferred loan origination fees	1,410	1,325
Share-based compensation	1,124	1,240
Net unrealized losses on available for sale securities	5,149	2,314
Other	1,917	2,281
Deferred tax assets	20,070	18,486
Deferred tax liabilities:
Amortization of intangibles	(1,918)	(2,148)
Deferred loan origination costs	(3,897)	(3,550)
Loan servicing rights	(858)	(849)
Other	(1,120)	(1,200)
Deferred tax liabilities	(7,793)	(7,747)
Net deferred tax asset	$ 12,277	$ 10,739