Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, Net

As of December 31, 2021 and 2020, property, plant and equipment, net was comprised of the following:

(In thousands)	2021			2020
Land	$	4,575		$	4,575
Building and land improvements		35,578			35,142
Building		68,157			68,169
Furniture and fixtures		19,917			19,965
Computer hardware and software		72,274			70,942
Engineering and other equipment		134,771			132,920
Total Property, Plant and Equipment		335,272			331,713
Less: accumulated depreciation		(279,506	)		(269,314	)
Total Property, Plant and Equipment, net	$	55,766		$	62,399