Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2023	Apr. 02, 2022
Operating activities
Net earnings	$ 112,189	$ 103,950
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	43,301	40,650
(Gain) loss on disposal of property and equipment	(64)	(59)
Inventory write-offs for obsolescence	8,986	5,825
Deferred income taxes	7,329	2,347
Other operating activities	269	8,816
Net change in operating assets and liabilities	(42,117)	(127,944)
Net cash provided by operating activities	129,893	33,585
Investing activities
Capital expenditures	(45,574)	(35,909)
Proceeds from sale of property and equipment	326	72
Purchase of short-term investments	(41)	(7,753)
Maturity of short-term investments	121,768	56,674
Other investing activities	(892)	(199)
Net cash provided by (used in) investing activities	75,587	12,885
Financing activities
Net proceeds (payments) on revolving credit lines	65,000	0
Repurchase of common stock held in treasury	(20,173)	(9,873)
Cash withholding taxes paid when shares withheld for vested equity awards	(3,653)	(2,123)
Net cash provided by (used in) financing activities	27,154	(26,465)
Effect of exchange rate changes on cash and cash equivalents	4,075	(4,865)
Net increase (decrease) in cash and cash equivalents	236,709	15,140
Cash and cash equivalents at beginning of period	610,825	774,108
Cash and cash equivalents at end of year	847,534	789,248
Common Stock [Member]
Financing activities
Dividends paid to common stockholders	(12,810)	(13,259)
Class B Convertible Common Stock [Member]
Financing activities
Dividends paid to common stockholders	$ (1,210)	$ (1,210)