Balance Sheet Components (Schedule of Other Accrued Liabilities) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jul. 01, 2018		Jul. 02, 2017	Jul. 01, 2018		Jul. 02, 2017	Jan. 01, 2018	Dec. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Sales and marketing	$ 118,318			$ 118,318				$ 96,153
Warranty obligation	18,759	[1]		18,759	[1]			75,824
Sales returns	69,378	[1]		69,378	[1]			0
Freight	7,646			7,646				10,567
Other	51,889			51,889				39,926
Total other accrued liabilities	265,990			265,990			$ 267,951	$ 222,470
Reclassified to sales returns upon adoption of ASC 606	$ 0		$ 0	$ 57,860	[2]	$ 0

[1] Upon adoption of ASC 606 on January 1, 2018, certain warranty reserve balances totaling $57.9 million were reclassified to sales returns as these liabilities are payable to the Company's customers and settled in cash or by credit on account. Under ASC 606, these amounts are to be accounted for as sales with right of return.

[2] Upon adoption of ASC 606 on January 1, 2018, certain warranty reserve balances totaling $57.9 million were reclassified to sales returns as these liabilities are payable to the Company's customers and settled in cash or by credit on account. Under ASC 606, these amounts are to be accounted for as sales with right of return.