CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Dec. 25, 2021
Cash flows from operating activities:
Net earnings	$ 144,912	$ 254,251	$ 197,725
Adjustments to reconcile net earnings to net cash flows from operations:
Depreciation and amortization	98,708	97,167	92,577
Contribution to defined benefit pension plan	(17,345)	(17,155)	(1,924)
Loss (gain) on divestitures	(2,994)	33,273
Stock-based compensation	39,219	41,850	28,720
Impairment of long-lived assets	140,844		27,911
Defined benefit pension plan cost (benefit)	249	(10,087)	(14,567)
Loss (gain) on sale of property, plant, and equipment	973	237	(961)
Equity in loss of nonconsolidated subsidiaries	1,419	950	944
Deferred income taxes	(18,649)	(1,225)	71
Changes in assets and liabilities:
Receivables	(46,308)	(74,163)	(69,275)
Inventories	88,433	(3,429)	(289,942)
Contract assets	(1,230)	(53,008)	(21,579)
Prepaid expenses and other assets (current and non-current)	(26,161)	26,625	(36,066)
Accounts payable	(10,529)	36,990	89,418
Contract liabilities	(106,884)	(567)	6,589
Accrued expenses	22,591	624	30,556
Income taxes payable	13,746	10,836	5,560
Other non-current liabilities	(14,219)	(16,904)	20,181
Net cash flows provided by operating activities	306,775	326,265	65,938
Cash flows from investing activities:
Purchase of property, plant, and equipment	(96,771)	(93,288)	(107,790)
Proceeds from divestiture, net of cash divested	6,369
Proceeds from sale of assets	1,710	1,582	1,745
Proceeds from property damage insurance claims	7,468
Acquisitions, net of cash acquired	(32,676)	(39,287)	(312,500)
Other, net	(1,381)	(1,087)	1,237
Net cash flows used in investing activities	(115,281)	(132,080)	(417,308)
Cash flows from financing activities:
Proceeds from short-term borrowings	30,785	9,665	5,821
Payments on short-term borrowings	(34,083)	(17,242)	(26,062)
Proceeds from long-term borrowings	370,012	253,999	312,485
Principal payments on long-term borrowings	(134,748)	(336,403)	(91,313)
Proceeds from settlement of financial derivatives		3,532
Debt issuance costs			(2,267)
Dividends paid	(49,515)	(45,813)	(41,412)
Dividends to redeemable noncontrolling interests	(662)	(714)
Purchase of redeemable noncontrolling interests		(7,338)
Purchase of treasury shares	(345,279)	(40,474)	(26,100)
Proceeds from exercises under stock plans	5,841	16,849	23,895
Tax withholdings on exercises under stock plans	(18,756)	(17,966)	(21,547)
Net cash flows provided by (used in) financing activities	(176,405)	(181,905)	133,500
Effect of exchange rate changes on cash and cash equivalents	2,546	(4,106)	(5,624)
Net change in cash and cash equivalents	17,635	8,174	(223,494)
Cash and cash equivalents-beginning of period	185,406	177,232	400,726
Cash and cash equivalents-end of period	$ 203,041	$ 185,406	$ 177,232