Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020
Cash flows from operating activities:
Net income	$ 88,884	$ 26,510
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	29,800	30,811
Stock-based compensation	12,385	7,084
Net loss on disposals and impairments of assets	78	224
Deferred income taxes	421	4,383
Changes in operating assets and liabilities:
Accounts receivable	8,666	4,224
Inventories	(7,215)	5,391
Income taxes	(11,625)	2,508
Prepaid expenses and other assets	(13,407)	7,018
Accounts payable	23,232	(14,804)
Customer prepayments	47,418	16,987
Accrued compensation and benefits	(22,387)	(7,405)
Other taxes and withholding	487	(3,594)
Other accruals and liabilities	4,683	7,664
Net cash provided by operating activities	161,420	87,001
Cash flows from investing activities:
Purchases of property and equipment	(32,012)	(21,695)
Proceeds from sales of property and equipment	12	25
Purchase of intangible assets	0	(945)
Net cash used in investing activities	(32,000)	(22,615)
Cash flows from financing activities:
Repurchases of common stock	(280,915)	(41,774)
Net increase (decrease) in short-term borrowings	146,447	(26,364)
Proceeds from issuance of common stock	3,535	4,100
Debt issuance costs	(557)	(290)
Net cash used in financing activities	(131,490)	(64,328)
Net (decrease) increase in cash and cash equivalents	(2,070)	58
Cash and cash equivalents, at beginning of period	4,243	1,593
Cash and cash equivalents, at end of period	$ 2,173	$ 1,651