CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Tax effect on unrealized holding gains (losses) on securities arising during the period	$ 736	$ 1,100	$ (1,100)	$ 1,800	$ (556)
Income tax expense on reclassification adjustment for net gain on sale of securities included in net income	$ 224	$ 317	$ 57	$ 541	$ 105