Goodwill (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes in Carrying Amount of Goodwill

The following table summarizes the changes in the carrying amount of goodwill at December 31 as follows:

(In thousands)	Aerospace		Test Systems		Total
Balance at December 31, 2018	$	124,952	$	—	$	124,952
Acquisitions and Divestitures	(262)		21,932		21,670
Impairment Charge	(1,610)		—		(1,610)
Foreign Currency Translations and Other	(42)		—		(42)
Balance at December 31, 2019	$	123,038	$	21,932	$	144,970
Acquisitions and Divestitures	—		(298)		(298)
Impairment Charge	(86,312)		—		(86,312)
Foreign Currency Translations and Other	(78)		—		(78)
Balance at December 31, 2020	$	36,648	$	21,634	$	58,282
Goodwill, Gross	$	157,349	$	21,634	$	178,983
Accumulated Impairment Losses	(120,701)		—		(120,701)
Goodwill, Net	$	36,648	$	21,634	$	58,282