Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 29, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, net of allowance for doubtful accounts of $1,079 and $1,254 as of September 29, 2019 and December 31, 2018, respectively	$ 1,079	$ 1,254
Current assets:
Cash and cash equivalents	168,002	201,047
Short-term investments	3,915	73,317
Accounts receivable, net of allowance for doubtful accounts of $1,079 and $1,254 as of September 29, 2019 and December 31, 2018, respectively	248,070	303,667
Inventories	275,584	243,871
Prepaid expenses and other current assets	31,153	35,997
Total current assets	726,724	857,899
Property and equipment, net	19,671	20,177
Operating lease right-of-use assets, net	31,610	0
Intangibles, net	11,699	17,146
Goodwill	80,721	80,721
Other non-current assets	72,636	67,433
Total assets	943,061	1,043,376
Current liabilities:
Accounts payable	83,912	139,748
Accrued employee compensation	18,103	31,666
Other accrued liabilities	163,333	199,472
Deferred revenue	5,812	11,086
Income taxes payable	1,314	2,020
Total current liabilities	272,474	383,992
Non-current income taxes payable	13,219	19,600
Non-current operating lease liabilities	27,178	0
Other non-current liabilities	8,052	12,232
Total liabilities	320,923	415,824
Commitments and contingencies (Note 10)
Stockholders’ equity:
Common stock	31	32
Additional paid-in capital	821,966	793,585
Accumulated other comprehensive loss	(18)	(15)
Accumulated deficit	(199,841)	(166,050)
Total stockholders’ equity	622,138	627,552
Total liabilities and stockholders’ equity	$ 943,061	$ 1,043,376