Segment and Geographic Area Information Net Sales by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net sales	$ 696,655	$ 654,010	$ 669,327	$ 657,211	$ 722,610	$ 693,216	$ 718,290	$ 692,313	$ 2,677,203		$ 2,826,429	$ 2,445,548
United States
Segment Reporting Information [Line Items]
Net sales									797,267		911,519	884,373
Foreign
Segment Reporting Information [Line Items]
Net sales									$ 1,879,936	[1]	$ 1,914,910	$ 1,561,175

[1] In 2016, net sales to China represented 13% of total net sales. No net sales in any other foreign country exceed 10% of total net sales. Also, net sales are attributed to countries based upon shipments to final destination.