Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) segment	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment			3
Segment Information
Net sales	$ 263,002	$ 229,973	$ 482,869	$ 429,496
Income (Loss) from Operations	45,137	40,924	67,768	67,565
Total Assets	1,041,477	999,539	1,041,477	999,539	$ 979,974
Cash and cash equivalent	140,950	246,337	140,950	246,337	226,537	$ 246,337	$ 258,825
Intersegment elimination
Segment Information
Net sales	6,650	7,398	12,596	13,172
Administrative and all other
Segment Information
Income (Loss) from Operations	(1,083)	(1,943)	(3,190)	(4,291)
Total Assets	(104,804)	40	(104,804)	40	(64,091)
Cash and cash equivalent	69,800	164,700	69,800	164,700	137,400
North America
Segment Information
Net sales	215,739	197,284	399,510	371,738
Income (Loss) from Operations	42,011	40,116	68,778	70,568
Total Assets	915,661	799,429	915,661	799,429	853,826
North America | Intersegment elimination
Segment Information
Net sales	928	761	1,778	1,262
Europe
Segment Information
Net sales	45,234	30,820	79,615	54,518
Income (Loss) from Operations	4,138	1,899	2,304	281
Total Assets	205,614	173,273	205,614	173,273	165,121
Europe | Intersegment elimination
Segment Information
Net sales	102	89	249	181
Asia/Pacific
Segment Information
Net sales	2,029	1,869	3,744	3,240
Income (Loss) from Operations	71	852	(124)	1,007
Total Assets	25,006	26,797	25,006	26,797	$ 25,118
Asia/Pacific | Intersegment elimination
Segment Information
Net sales	$ 5,620	$ 6,548	$ 10,569	$ 11,729