Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 3,914	$ 2,519
Other comprehensive income:
Unrealized gains arising during the period on available-for-sale securities	7,426	2,688
Tax effect	(2,792)	(1,028)
Unrealized gains arising during the period on available-for-sale securities, net of tax	4,634	1,660
Reclassification adjustment for gain on available-for-sale securities included in net income	0	0
Tax effect	0	0
Reclassification adjustment for gain on available-for-sale securities included in net income, net of tax	0	0
Change in defined benefit plans liability	(86)	0
Tax effect	32	0
Change in defined benefit plans liability, net of tax	(54)	0
Unrealized loss on interest rate swaps	(883)	(523)
Tax effect	332	200
Unrealized loss on interest rate swaps, net of tax	(551)	(323)
Reclassification adjustment for loss on interest rate swaps included in net income	3	3
Tax effect	(1)	(1)
Reclassification adjustment for loss on interest rate swaps included in net income, net of tax	2	2
Other comprehensive income, net of tax:	4,031	1,339
Comprehensive income	$ 7,945	$ 3,858