CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net earnings	$ 135,665	$ 118,431
Adjustments to reconcile net earnings to net cash provided by operating activities
Depreciation and amortization	51,600	51,257
Gain (Loss) on Disposition of Business	0	(2,149)
Gain on fixed asset disposals	(6,080)	(897)
Deferred income taxes	1,450	5,554
Share-based compensation	6,980	7,801
Change in operating assets and liabilities, net of businesses acquired and divested:
Accounts receivable, net	(37,621)	(57,522)
Inventories, net	(11,080)	(43,625)
Progress payments	(356)	6,718
Accounts payable and accrued expenses	(87,430)	(38,621)
Deferred revenue	5,278	17,865
Income taxes payable	2,872	(7,712)
Net pension and postretirement liabilities	311	(48,265)
Other current and long-term assets and liabilities	(21,203)	17,850
Net cash provided by operating activities	40,386	26,685
Cash flows from investing activities:
Proceeds from sales and disposals of long lived assets	8,920	4,328
Proceeds from Divestiture of Businesses		(268)
Payments to Acquire Intangible Assets	(147)	(1,500)
Additions to property, plant, and equipment	(33,471)	(19,852)
Acquisition of businesses, net of cash acquired	(50,075)	(212,737)
Payments for (Proceeds from) Previous Acquisition		(460)
Net cash used for investing activities	(74,773)	(230,489)
Cash flows from financing activities:
Borrowings under revolving credit facility	7,318	367,762
Payment of revolving credit facility	(7,561)	(366,953)
Repurchases of common stock	(25,065)	(46,115)
Proceeds from share-based compensation	5,411	6,360
Dividends paid	(6,420)	(6,623)
Proceeds from (Payments for) Other Financing Activities	(395)	(365)
Net cash used for financing activities	(26,712)	(45,934)
Effect of exchange-rate changes on cash	1,377	(6,484)
Net decrease in cash and cash equivalents	(59,722)	(256,222)
Cash and cash equivalents at beginning of period	276,066	475,120
Cash and cash equivalents at end of period	216,344	218,898
Supplemental disclosure of non-cash activities:
Capital expenditures incurred but not yet paid	$ 85	$ 425