CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 25, 2022	Jun. 26, 2021
Cash flows from operating activities:
Net earnings	$ 140,113	$ 117,658
Adjustments to reconcile net earnings to net cash flows from operations:
Depreciation and amortization	48,012	44,063
Stock-based compensation	19,583	8,948
Defined benefit pension plan benefit	(5,242)	(7,400)
Contribution to defined benefit pension plan	(17,155)	(970)
Loss (gain) on sale of property, plant and equipment	737	(1,330)
Equity in loss in nonconsolidated subsidiaries	913	719
Deferred income taxes	2,675	(3,718)
Changes in assets and liabilities:
Receivables	(53,809)	(45,398)
Inventories	(56,625)	(142,218)
Prepaid expenses and other assets (current and non-current)	5,369	(19,680)
Contract assets	(59,536)	(17,165)
Accounts payable	39,875	55,445
Accrued expenses	(16,034)	(18,119)
Contract liabilities	4,798	24,963
Other noncurrent liabilities	(6,447)	52,229
Income taxes payable/refundable	20,792	22,158
Net cash flows from operating activities	68,019	70,185
Acquisitions, net of cash acquired	(39,297)	(312,500)
Cash flows from investing activities:
Purchase of property, plant and equipment	(49,676)	(48,824)
Proceeds from sale of assets	45	1,595
Other, net	1,117	(1,669)
Net cash flows from investing activities	(87,811)	(361,398)
Cash flows from financing activities:
Proceeds from short-term borrowings	0	11,972
Payments on short-term borrowings	(9,155)	(17,021)
Proceeds from long-term borrowings	201,462	149,342
Principal payments on long-term borrowings	(156,973)	(15,421)
Dividends paid	(22,337)	(20,181)
Purchase of noncontrolling interest	(4,292)	0
Purchase of treasury shares	(9,776)	(21,600)
Proceeds from exercises under stock plans	5,846	19,891
Purchase of common treasury shares—stock plan exercises	(4,205)	(16,922)
Net cash flows from financing activities	570	90,060
Effect of exchange rate changes on cash and cash equivalents	(3,431)	(288)
Net change in cash and cash equivalents	(22,653)	(201,441)
Cash and cash equivalents—beginning of year	177,232	400,726
Cash and cash equivalents—end of period	$ 154,579	$ 199,285