Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Unrealized (losses) gains during the period, income tax benefit (expense)	$ 200	$ 330	$ 501	$ (426)
Reclassification adjustment for losses (gains) realized in net income, income tax (benefit) expense	$ (62)	$ (39)	$ (49)	$ (1)