Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net income	$ 197,058	$ 182,999	$ 138,720
Other comprehensive income, net of tax:
Gain on cash flow hedges, net of tax expense of $175, $399 and $380	277	649	612
Comprehensive income	$ 197,335	$ 183,648	$ 139,332