Goodwill And Other Intangible Assets (Goodwill By Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 450,605	$ 497,162
Business divestiture	(85,474)	(3,394)
Reclassification of Instrumentation & Sampling to assets held for sale	(91,492)
Currency translation adjustments	(1,746)	(10,987)
Held for sale	(91,492)	(48,972)
Measurement Period adjustments related to acquisitions		8,196
Goodwill, Ending Balance	271,893	450,605
Energy Segment
Goodwill [Line Items]
Goodwill, Beginning Balance	96,272	145,458
Business divestiture	0	0
Reclassification of Instrumentation & Sampling to assets held for sale	(91,492)
Currency translation adjustments	(4,780)	(4,072)
Measurement Period adjustments related to acquisitions		(4,742)
Goodwill, Ending Balance	0	96,272
Aerospace Segment
Goodwill [Line Items]
Goodwill, Beginning Balance	57,418	62,548
Business divestiture	0	0
Reclassification of Instrumentation & Sampling to assets held for sale	0
Currency translation adjustments	(33)	(84)
Held for sale		0
Measurement Period adjustments related to acquisitions		(5,046)
Goodwill, Ending Balance	57,385	57,418
Industrial Segment
Goodwill [Line Items]
Goodwill, Beginning Balance	296,915	289,156
Business divestiture	(85,474)	(3,394)
Reclassification of Instrumentation & Sampling to assets held for sale	0
Currency translation adjustments	3,067	(6,831)
Held for sale		0
Measurement Period adjustments related to acquisitions		17,984
Goodwill, Ending Balance	214,508	296,915
Disposal Group, Held-for-sale, Not Discontinued Operations
Goodwill [Line Items]
Held for sale	$ (91,492)	$ (40,372)

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Amount classified as goodwill attributable to disposal group held for sale or disposed of.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of transfers into (out of) an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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