Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 3,892	$ 2,523	$ 7,806	$ 5,042
Other comprehensive income:
Unrealized gains (losses) arising during the period on available-for-sale securities	3,774	(6,761)	11,200	(4,073)
Tax effect	(1,419)	2,586	(4,211)	1,558
Unrealized gains (losses) arising during the period on available-for-sale securities, net of tax	2,355	(4,175)	6,989	(2,515)
Change in defined benefit plans liability	0	0	(86)	0
Tax effect	0	0	32	0
Change in defined benefit plans liability, net of tax	0	0	(54)	0
Unrealized loss on interest rate swaps	(223)	421	(1,106)	(102)
Tax effect	84	(161)	416	39
Unrealized loss on interest rate swaps, net of tax	(139)	260	(690)	(63)
Reclassification adjustment for loss on interest rate swaps included in net income	3	3	6	6
Tax effect	(1)	(1)	(2)	(2)
Reclassification adjustment for loss on interest rate swaps included in net income, net of tax	2	2	4	4
Other comprehensive income (loss), net of tax:	2,218	(3,913)	6,249	(2,574)
Comprehensive income (loss)	$ 6,110	$ (1,390)	$ 14,055	$ 2,468