CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Cash flows from operating activities:
Net earnings	$ 42,721	$ 37,078
Adjustments to reconcile net earnings to net cash flows from operations:
Depreciation and amortization	20,343	20,253
Noncash loss on trading securities	32	87
Stock-based compensation	3,325	3,670
Defined benefit pension plan benefit	(1,763)	(132)
Contribution to defined benefit pension plan	(17,039)	(13,943)
(Gain) loss on sale of property, plant and equipment	53	(227)
Equity in loss in nonconsolidated subsidiaries	219	0
Deferred income taxes	8,177	9,662
Changes in assets and liabilities:
Receivables	(27,116)	(25,424)
Inventories	(8,674)	(7,239)
Prepaid expenses and other assets	(10,149)	(7,310)
Contract asset - costs and profits in excess of billings	(3,933)	(7,361)
Accounts payable	13,880	(704)
Accrued expenses	38,805	4,585
Other noncurrent liabilities	(2,971)	(234)
Income taxes refundable	6,442	(4,848)
Net cash flows from operating activities	62,352	7,913
Cash flows from investing activities:
Purchase of property, plant and equipment	(23,580)	(21,109)
Proceeds from sale of assets	684	422
Acquisitions, net of cash acquired	(8,804)	(57,106)
Other, net	(1,436)	(1,667)
Net cash flows from investing activities	(33,136)	(79,460)
Cash flows from financing activities:
Proceeds from short-term agreements	3,751	9,327
Payments on short-term agreements	(5,193)	0
Proceeds from long-term borrowings	10,000	10,000
Principal payments on long-term borrowings	(188)	(10,194)
Dividends paid	(8,079)	(8,213)
Dividends to noncontrolling interest	(5,342)	(838)
Purchase of noncontrolling interest	(53,534)	(23,082)
Purchase of treasury shares	(20,481)	(9,421)
Proceeds from exercises under stock plans	60	1,174
Purchase of common treasury shares—stock plan exercises	(3)	(747)
Net cash flows from financing activities	(79,009)	(31,994)
Effect of exchange rate changes on cash and cash equivalents	(9,104)	1,568
Net change in cash and cash equivalents	(58,897)	(101,973)
Cash, cash equivalents, and restricted cash—beginning of year	353,542	313,210
Cash, cash equivalents, and restricted cash—end of period	$ 294,645	$ 211,237