Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net income	$ 30,880	$ 25,890	$ 23,014
Other comprehensive income (loss):
Change in net unrealized holding gains on available-for-sale securities	(17,004)	(3,034)	18,046
Change in funded status of pension plan	1,443	(2,573)	(2,581)
Other comprehensive income (loss) before income taxes	(15,561)	(5,607)	15,465
Income tax expense (benefit)	(6,433)	(2,346)	6,342
Other comprehensive income (loss)	(9,128)	(3,261)	9,123
Comprehensive income	$ 21,752	$ 22,629	$ 32,137