CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Other comprehensive income:
Net unrealized gain (loss) on available-for-sale securities, taxes	$ 1,015	$ (353)	$ 940	$ 962
Net realized gain on sale of available-for-sale securities included in net income, taxes	0	33	113	32
Change in nonqualified pension plan unrecognized net loss and unrecognized prior service cost, taxes	$ 15	$ 3	$ 44	$ 4