Property, Plant, and Equipment (Tables)

3 Months Ended

Mar. 31, 2020

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Property, plant and equipment consisted of the following (in thousands):

	Estimated Useful Life (in years)			As of
				March 31, 2020			December 31, 2019
Automobiles	5			$	23		$	23
Leasehold improvements	4	to	20	3,867			3,830
Computer software and equipment	2	to	7	26,816			26,816
Machinery and equipment	3	to	5	18,571			18,551
Furniture and fixtures	5	to	20	2,808			2,808
Work in progress(1)	N/A			4,959			2,747
Total cost				57,044			54,775
Accumulated depreciation				(33,901		)	(32,020		)
Total property, plant and equipment, net				$	23,143		$	22,755

⁽¹⁾ Work in progress includes information technology assets and production tooling.

Schedule Of Depreciation Expense

Depreciation expense was as follows (in thousands):

	Three Months Ended March 31,
	2020		2019
Depreciation expense	$	2,007	$	1,675