Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Cash flows from operating activities:
Net income	$ 81,845	$ 69,539	$ 65,077
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	61,866	61,966	61,291
Stock-based compensation	16,657	11,412	15,763
Net (gain) loss on disposals and impairments of assets	(430)	(51)	249
Deferred income taxes	(1,014)	7,447	2,042
Changes in operating assets and liabilities:
Accounts receivable	4,817	(5,483)	393
Inventories	(2,183)	(584)	(9,272)
Income taxes	3,066	(6,561)	1,697
Prepaid expenses and other assets	(13,959)	5,551	(12,405)
Accounts payable	10,661	(9,894)	21,779
Customer prepayments	7,182	(701)	1,560
Accrued compensation and benefits	12,920	(6,872)	15,398
Other taxes and withholding	725	707	(893)
Other accruals and liabilities	7,007	5,064	9,928
Net cash provided by operating activities	189,160	131,540	172,607
Cash flows from investing activities:
Purchases of property and equipment	(59,239)	(45,515)	(59,829)
Proceeds from sales of property and equipment	2,615	272	36
Net cash used in investing activities	(56,624)	(45,243)	(59,793)
Cash flows from financing activities:
Repurchases of common stock	(165,079)	(272,446)	(155,245)
Net increase in short-term borrowings	26,357	182,336	28,094
Proceeds from issuance of common stock	7,190	2,788	3,241
Debt issuance costs	(1,023)	(1,014)	(12)
Net cash used in financing activities	(132,555)	(88,336)	(123,922)
Net decrease in cash, cash equivalents and restricted cash	(19)	(2,039)	(11,108)
Cash and cash equivalents, at beginning of period	1,612	3,651	14,759
Cash and cash equivalents, at end of period	1,593	1,612	3,651
Non-cash financing transactions:
Change in unsettled repurchases of common stock	(9,506)	9,999	0
Supplemental Disclosure of Cash Flow Information
Income taxes paid, net of refunds	17,182	15,031	22,807
Interest paid	10,656	5,086	753
Finance lease obligations incurred	0	943	0
Purchases of property and equipment included in accounts payable	$ 5,725	$ 12,123	$ 3,964