CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net earnings	$ 307,583	$ 275,749	$ 214,891
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	102,412	102,949	99,995
(Gain) loss on sale of businesses	0	(1,735)	(875)
(Gain) loss on sale/disposal of long-lived assets	(11,054)	(1,120)	29
Deferred income taxes	40,787	8,562	(5,782)
Share-based compensation	13,669	14,094	11,572
Change in operating assets and liabilities, net of businesses acquired and divested:
Accounts receivable, net	(12,613)	(57,492)	(16,388)
Inventories, net	(3,485)	(41,197)	19,711
Progress Payments	(4,834)	(11,121)	(774)
Accounts payable and accrued expenses	(18,629)	48,930	4,323
Deferred revenue	36,134	23,082	36,898
Income taxes	(15,625)	(8,847)	(5,479)
Net pension and postretirement liabilities	(1,310)	(43,759)	3,481
Other current and long-term assets and liabilities	(11,631)	28,178	27,110
Net cash provided by operating activities	421,404	336,273	388,712
Cash flows from investing activities:
Proceeds from sales and disposals of long-lived assets	15,093	9,117	6,769
Additions to property, plant, and equipment	(69,752)	(53,417)	(52,705)
Payments to Acquire Businesses, Gross	(185,209)	(210,167)	(232,630)
Payments for (Proceeds from) Other Investing Activities	172	1,049	(6,238)
Net cash used for investing activities	(240,040)	(255,516)	(272,328)
Cash flows from financing activities:
Borrowings under revolving credit facility	37,692	372,980	7,658
Payment of revolving credit facilities	(37,934)	(372,887)	(8,176)
Principal payments on debt	0	(50,000)	(150,000)
Repurchases of common stock	(50,661)	(198,592)	(52,127)
Proceeds from share-based compensation	11,770	11,940	14,179
Dividends paid	(28,200)	(26,328)	(24,740)
Proceeds from (Payments for) Other Financing Activities	(812)	(752)	(692)
Net cash provided by financing activities	(68,145)	(263,639)	(213,898)
Effect of exchange-rate changes on cash	1,748	(16,172)	18,786
Net increase (decrease) in cash and cash equivalents	114,967	(199,054)	(78,728)
Cash and cash equivalents at beginning of period	276,066	475,120	553,848
Cash and cash equivalents at end of period	391,033	276,066	475,120
Supplemental disclosure of non-cash investing activities:
Capital Expenditures Incurred but Not yet Paid	$ 2,015	$ 2,193	$ 976