Property, Plant, and Equipment (Tables)

6 Months Ended

Jun. 30, 2019

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
				June 30, 2019			December 31, 2018
Automobiles	5			$	23		$	23
Leasehold improvements	4	to	20	3,831			3,782
Computer software and equipment	2	to	7	23,073			23,776
Machinery and equipment	3	to	5	17,565			16,756
Furniture and fixtures	5	to	20	2,832			2,827
Work in progress(1)	N/A			3,305			1,590
Total cost				50,629			48,754
Accumulated depreciation				(28,289		)	(26,538		)
Total property, plant and equipment, net				$	22,340		$	22,216

⁽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 June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Depreciation expense	$	1,632	$	1,244	$	3,307	$	2,873