CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2023	Jun. 25, 2022
Cash flows from operating activities:
Net earnings	$ 161,143	$ 140,113
Adjustments to reconcile net earnings to net cash flows from operations:
Depreciation and amortization	48,792	48,012
Contribution to defined benefit pension plan	(15,259)	(17,155)
Gain on divestiture	(2,994)	0
Stock-based compensation	19,856	19,583
Defined benefit pension plan benefit	122	(5,242)
Loss on sale of property, plant, and equipment	1,297	737
Equity in loss in nonconsolidated subsidiaries	1,020	913
Deferred income taxes	1,631	2,675
Changes in assets and liabilities:
Receivables	(38,147)	(53,809)
Inventories	6,402	(56,625)
Prepaid expenses and other assets (current and non-current)	(26,001)	5,369
Contract assets	20,052	(59,536)
Accounts payable	(20,750)	39,875
Accrued expenses	(11,202)	(16,034)
Contract liabilities	(53,728)	4,798
Other non-current liabilities	(7,083)	(6,447)
Income taxes payable / refundable	24,395	20,792
Net cash flows provided by operating activities	109,546	68,019
Cash flows from investing activities:
Purchase of property, plant, and equipment	(45,393)	(49,676)
Proceeds from divestiture, net of cash divested	6,369	0
Proceeds from sale of assets	1,261	45
Proceeds from property damage insurance claims	4,844	0
Acquisitions, net of cash acquired		(39,297)
Other, net	(1,127)	1,117
Net cash flows used in investing activities	(34,046)	(87,811)
Cash flows from financing activities:
Proceeds from short-term borrowings	14,905	0
Payments on short-term borrowings	(19,598)	(9,155)
Proceeds from long-term borrowings	165,012	201,462
Principal payments on long-term borrowings	(84,105)	(156,973)
Dividends paid	(24,376)	(22,337)
Dividends to noncontrolling interest	(662)	0
Purchase of noncontrolling interests		(4,292)
Purchase of treasury shares	(135,115)	(9,776)
Proceeds from exercises under stock plans	5,201	5,846
Tax withholdings on exercises under stock plans	(15,416)	(4,205)
Net cash flows (used in) provided by financing activities	(94,154)	570
Effect of exchange rate changes on cash and cash equivalents	155	(3,431)
Net change in cash and cash equivalents	(18,499)	(22,653)
Cash and cash equivalents-beginning of period	185,406	177,232
Cash and cash equivalents-end of period	$ 166,907	$ 154,579