Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2020

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

At March 31, 2020 and December 31, 2019, property, plant and equipment consisted of the following:

	March 31,			December 31,
(In thousands)	2020			2019
Land	$	4,575		$	4,575
Building and land improvements		34,805			34,797
Building		68,141			68,157
Furniture and fixtures		19,964			19,959
Computer hardware and software		68,957			68,777
Engineering and other equipment		131,140			130,430
Total property, plant and equipment		327,582			326,695
Less: accumulated depreciation		(261,082	)		(258,609	)
Total property, plant and equipment, net	$	66,500		$	68,086