CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 24, 2022
Cash flows from operating activities:
Net earnings	$ 110,828	$ 213,043
Adjustments to reconcile net earnings to net cash flows from operations:
Depreciation and amortization	73,638	72,803
Contribution to defined benefit pension plan	(15,259)	(17,155)
Impairment of long-lived assets	140,844	0
Gain on divestiture	(2,994)	0
Stock-based compensation	28,810	29,998
Defined benefit pension plan expense (benefit)	186	(7,597)
Loss on sale of property, plant, and equipment	822	790
Equity in loss of nonconsolidated subsidiaries	1,219	931
Deferred income taxes	(12,562)	(2,780)
Changes in assets and liabilities:
Receivables	(66,190)	(60,450)
Inventories	50,133	(31,143)
Prepaid expenses and other assets (current and non-current)	(20,986)	6,738
Contract assets	4,419	(76,887)
Accounts payable	(11,212)	37,787
Accrued expenses	11,022	10,904
Contract liabilities	(88,293)	(10,051)
Other non-current liabilities	(24,114)	(9,312)
Income taxes payable	10,557	26,107
Net cash flows provided by operating activities	190,868	183,726
Cash flows from investing activities:
Purchase of property, plant, and equipment	(71,233)	(67,122)
Proceeds from divestiture, net of cash divested	6,369	0
Proceeds from sale of assets	1,565	71
Proceeds from property damage insurance claims	6,770	0
Acquisitions, net of cash acquired	(31,839)	(39,287)
Other, net	(898)	(108)
Net cash flows used in investing activities	(89,266)	(106,446)
Cash flows from financing activities:
Proceeds from short-term borrowings	24,649	4,137
Payments on short-term borrowings	(27,290)	(12,366)
Proceeds from long-term borrowings	215,012	235,470
Principal payments on long-term borrowings	(109,335)	(251,155)
Proceeds from settlement of financial derivatives		2,243
Dividends paid	(36,983)	(34,080)
Dividends to noncontrolling interest	(662)	0
Purchase of noncontrolling interests		(7,338)
Purchase of treasury shares	(166,663)	(20,491)
Proceeds from exercises under stock plans	5,348	8,778
Tax withholdings on exercises under stock plans	(15,567)	(4,341)
Net cash flows used in financing activities	(111,491)	(79,143)
Effect of exchange rate changes on cash and cash equivalents	(2,951)	(9,148)
Net change in cash and cash equivalents	(12,840)	(11,011)
Cash and cash equivalents-beginning of period	185,406	177,232
Cash and cash equivalents-end of period	$ 172,566	$ 166,221