Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Cash flows from operating activities:
Net (loss) income	$ (18,135)	$ 22,520
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	7,459	8,724
Stock-based compensation	5,191	6,864
Deferred income taxes, net	(528)	1,739
Other	1,531	1,542
Changes in operating assets and liabilities — (use) source
Accounts receivable	108,825	106,561
Inventory	9,848	(16,863)
Other current assets	(5,612)	(2,913)
Accounts payable	(41,440)	(52,744)
Accrued expenses and other liabilities	(26,405)	(22,727)
Net cash provided by operating activities	40,734	52,703
Cash flows from investing activities:
Additions of property and equipment	(7,310)	(6,004)
Change in other assets	(1,560)	(1,977)
Sales and maturities of investments	3,500	2,380
Net cash used in investing activities	(5,370)	(5,601)
Cash flows from financing activities:
Proceeds from employee stock plans	934	2,563
Income tax withholding payment associated with restricted stock vesting	(1,816)	(7,212)
Stock repurchases	25,000	0
Net cash used in financing activities	(25,882)	(4,649)
Effect of exchange rate changes on cash and cash equivalents	(106)	268
Net increase in cash and cash equivalents	9,376	42,721
Cash and cash equivalents, at beginning of period	239,392	130,373
Cash and cash equivalents, at end of period	$ 248,768	$ 173,094