Condensed Consolidated Statement of Stockholders' Equity - 9 months ended Sep. 30, 2016 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Balance at Dec. 31, 2015	$ 913,017	$ 1,193	$ 904,425	$ 40,189	$ (32,790)
Balance, Shares at Dec. 31, 2015	119,258,374	119,258,374
Net income	$ 32,301			32,301
Equity based compensation	2,829		2,829
Impact of foreign exchange contracts, net of taxes	(310)				(310)
Exercise of stock options	1,281	$ 2	1,279
Exercise of stock options,Shares		240,280
Foreign currency adjustments	(9,636)				(9,636)
Excess tax benefit	526		526
Other	(117)		(117)
Balance at Sep. 30, 2016	$ 939,891	$ 1,195	$ 908,942	$ 72,490	$ (42,736)
Balance, Shares at Sep. 30, 2016	119,498,654	119,498,654