CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net earnings	$ 147,399	$ 218,175
Adjustments to reconcile net earnings to net cash provided by operating activities
Depreciation and amortization	84,769	76,998
Gain on fixed asset disposals	(370)	(6,295)
Deferred income taxes	4,258	652
Share-based compensation	11,777	11,262
Foreign exchange loss on substantial liquidation of subsidiary	9,498	0
Non-cash restructuring charges	10,254	0
Change in operating assets and liabilities, net of businesses acquired and divested:
Accounts receivable, net	1,987	(44,788)
Inventories, net	(33,322)	(8,587)
Progress Payments	(3,036)	(4,955)
Accounts payable and accrued expenses	(90,944)	(86,900)
Deferred revenue	(8,841)	18,750
Income taxes payable	9,409	2,676
Net pension and postretirement liabilities	(150,674)	(928)
Other current and long-term assets and liabilities	11,620	(17,045)
Net cash provided by operating activities	3,784	159,015
Cash flows from investing activities:
Proceeds from sales and disposals of long lived assets	2,476	10,099
Payments to Acquire Intangible Assets	0	(157)
Additions to property, plant, and equipment	(36,341)	(49,919)
Acquisition of businesses, net of cash acquired	82,053	50,075
Net cash used for investing activities	(115,918)	(90,052)
Cash flows from financing activities:
Borrowings under revolving credit facility	389,398	35,387
Payments of revolving credit facility	(389,398)	(35,550)
Borrowings of debt	300,000	0
Repurchases of common stock	(137,155)	(37,864)
Proceeds from share-based compensation	9,908	10,943
Dividends paid	(14,160)	(13,683)
Other	(648)	(600)
Net cash provided by (used for) financing activities	157,945	(41,367)
Effect of exchange-rate changes on cash	(10,023)	(5,950)
Net increase in cash and cash equivalents	35,788	21,646
Cash and cash equivalents at beginning of period	391,033	276,066
Cash and cash equivalents at end of period	426,821	297,712
Supplemental disclosure of non-cash activities:
Capital expenditures incurred but not yet paid	$ 1,668	$ 88