Property, Plant and Equipment

3 Months Ended

Mar. 31, 2021

Property Plant And Equipment [Abstract]

9. PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consisted of the following:

	As of March 31,			As of December 31,
(In thousands)	2021			2020
Land	$	4,575		$	4,575
Building and land improvements		35,154			35,142
Building		68,167			68,169
Furniture and fixtures		19,946			19,965
Computer hardware and software		70,889			70,942
Engineering and other equipment		133,065			132,920
Total property, plant and equipment		331,796			331,713
Less: accumulated depreciation		(271,639	)		(269,314	)
Total property, plant and equipment, net	$	60,157		$	62,399

Long-lived assets used in operations are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable and the undiscounted cash flows estimated to be generated by the asset are less than the asset’s carrying value. Due to the current economic environment, particularly related to COVID-19, the Company assessed impairment triggers related to long-lived assets during the first quarter of 2021. Based on this assessment, no triggers occurred to require the performance of an impairment test, and no impairment losses of long-lived assets were recorded.

Depreciation expense was $3.1 million and $3.0 million for the three months ended March 31, 2021 and 2020, respectively, which is recorded in cost of revenue, selling, general and administrative expenses and research and development expenses in the Condensed Consolidated Statements of Income (Loss).