Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Cash flows from operating activities:
Net income	$ 139,189	$ 81,845	$ 69,539
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	61,563	61,866	61,966
Stock-based compensation	21,813	16,657	11,412
Net loss (gain) on disposals and impairments of assets	247	(430)	(51)
Deferred income taxes	(3,566)	(1,014)	7,447
Changes in operating assets and liabilities:
Accounts receivable	(11,893)	4,817	(5,483)
Inventories	5,703	(2,183)	(584)
Income taxes	1,057	3,066	(6,561)
Prepaid expenses and other assets	(13,717)	(13,959)	5,551
Accounts payable	(16,755)	10,661	(9,894)
Customer prepayments	37,769	7,182	(701)
Accrued compensation and benefits	36,825	12,920	(6,872)
Other taxes and withholding	111	725	707
Other accruals and liabilities	21,315	7,007	5,064
Net cash provided by operating activities	279,661	189,160	131,540
Cash flows from investing activities:
Purchases of property and equipment	(37,100)	(59,239)	(45,515)
Proceeds from sales of property and equipment	55	2,615	272
Purchase of intangible assets	(1,973)	0	0
Net cash used in investing activities	(39,018)	(56,624)	(45,243)
Cash flows from financing activities:
Repurchases of common stock	(235,644)	(165,079)	(272,446)
Net (decrease) increase in short-term borrowings	(11,639)	26,357	182,336
Proceeds from issuance of common stock	9,602	7,190	2,788
Debt issuance costs	(312)	(1,023)	(1,014)
Net cash used in financing activities	(237,993)	(132,555)	(88,336)
Net increase (decrease) in cash and cash equivalents	2,650	(19)	(2,039)
Cash and cash equivalents, at beginning of period	1,593	1,612	3,651
Cash and cash equivalents, at end of period	4,243	1,593	1,612
Non-cash financing transactions:
Change in unsettled repurchases of common stock	(493)	(9,506)	9,999
Supplemental Disclosure of Cash Flow Information
Income taxes paid, net of refunds	38,698	17,182	15,031
Interest paid	9,053	10,656	5,086
Finance lease obligations incurred	0	0	943
Purchases of property and equipment included in accounts payable	$ 5,015	$ 5,725	$ 12,123