CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Parenthetical] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	$ (1,154)	$ (466)	$ 3,192
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	(624)	(725)	(949)
Other Comprehensive Income Loss, Reclassification Adjustment For Impairment Charge From AOCI for Sale of Securities, Tax	$ 0	$ 5	$ 0