Revenues - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Increase (decrease) in retained earnings	$ 518,004				$ 922,000				$ 518,004	$ 922,000
Revenues	549,688	$ 533,098	$ 548,352	$ 500,140	552,052	$ 554,037	$ 560,898	$ 498,715	2,131,278	2,165,702	$ 2,087,185
Accrued rebates	37,170				41,312				37,170	41,312
Accrued returns	10,974				9,137				10,974	9,137
Price adjustment recognized against gross accounts receivable									28,672	24,976
Contract with customer, deferred revenues	70,070				72,358				70,070	72,358	73,478
Contract with customer, revenue recognized									114,100		$ 106,020
Contract with customer, deferred revenues, current	54,255				62,272				54,255	62,272
Contract with customer, deferred revenues, noncurrent	15,800								15,800
Deferred sales commission	$ 3,400				$ 2,900				3,400	2,900
Sales commissions									$ 4,900	$ 4,700
Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Increase (decrease) in retained earnings												$ 2,600