Revenues - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2018	Apr. 02, 2017	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Increase (decrease) in retained earnings	$ 795,977			$ 833,610
Decrease in revenues	(605,565)	$ (551,381)
Performance obligation satisfied in previous period	200
Accrued rebates	17,900
Accrued returns	6,900
Estimated price adjustments, accounts receivable	25,700
Contract with customer, deferred revenues	97,800		$ 104,400
Contract with customer, revenue recognized	52,000
Deferred sales commission	2,400
Sales commissions	6,100
Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Increase (decrease) in retained earnings			$ 2,600
Decrease in revenues	$ 100