Condensed Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Cash flows from operating activities:
Net income	$ 39,140	$ 25,418
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	15,371	15,743
Stock-based compensation	2,051	3,638
Net gain on disposals and impairments of assets	(22)	(433)
Deferred income taxes	5,334	824
Changes in operating assets and liabilities:
Accounts receivable	12,808	6,182
Inventories	5,044	1,568
Income taxes	5,798	4,208
Prepaid expenses and other assets	7,478	(5,283)
Accounts payable	11,282	5,857
Customer prepayments	(8,432)	3,452
Accrued compensation and benefits	(13,157)	1,750
Other taxes and withholding	(479)	1,254
Other accruals and liabilities	2,725	3,958
Net cash provided by operating activities	84,941	68,136
Cash flows from investing activities:
Purchases of property and equipment	(10,351)	(19,743)
Proceeds from sales of property and equipment	25	2,571
Net cash used in investing activities	(10,326)	(17,172)
Cash flows from financing activities:
Repurchases of common stock	(41,445)	(55,656)
Net increase in short-term borrowings	201,170	2,955
Proceeds from issuance of common stock	3,283	2,836
Debt issuance costs	(3)	(1,015)
Net cash provided by (used in) financing activities	163,005	(50,880)
Net increase in cash and cash equivalents	237,620	84
Cash and cash equivalents, at beginning of period	1,593	1,612
Cash and cash equivalents, at end of period	$ 239,213	$ 1,696