Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net income	$ 182,999	$ 138,720	$ 106,000
Other comprehensive income, net of tax:
Gain on cash flow hedges, net of tax expense of $399, $380 and $668	649	612	1,077
Comprehensive income	$ 183,648	$ 139,332	$ 107,077