Balance Sheet Components - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepaid expenses	$ 16,298	$ 24,204
Point-of-purchase displays, net	8,114	14,750
Derivative assets	4,681	0
Prepaid marketing	2,525	6,074
Insurance receivable	0	37,300
Other	13,923	14,941
Total prepaid expenses and other current assets	$ 45,541	$ 97,269