Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information
Net revenues	$ 593,755	$ 195,443	$ 209,032	$ 191,972	$ 561,226	$ 187,328	$ 203,961	$ 181,709	$ 1,190,202	$ 1,134,224	$ 1,059,429
Cost of net revenues									619,650	566,117	528,078
Restructuring									1,475	0	0
Gross profit	$ 339,537	$ 64,296	$ 90,631	$ 74,613	$ 331,178	$ 69,574	$ 94,369	$ 72,986	$ 569,077	$ 568,107	$ 531,351
Gross profit as a percentage of net revenues									48.00%	50.00%	50.00%
Operating segments | Consumer
Segment Reporting Information
Net revenues									$ 996,963	$ 997,556	$ 961,418
Cost of net revenues									456,665	455,387	436,050
Restructuring									1,475	0
Gross profit									$ 538,823	$ 542,169	$ 525,368
Gross profit as a percentage of net revenues									54.00%	54.00%	55.00%
Operating segments | SBS
Segment Reporting Information
Net revenues									$ 193,239	$ 136,668	$ 98,011
Cost of net revenues									154,068	100,582	79,789
Gross profit									$ 39,171	$ 36,086	$ 18,222
Gross profit as a percentage of net revenues									20.00%	26.00%	19.00%
Corporate
Segment Reporting Information
Net revenues									$ 0	$ 0	$ 0
Cost of net revenues									8,917	10,148	12,239
Gross profit									$ (8,917)	$ (10,148)	$ (12,239)