Property, Plant, and Equipment (Tables)

12 Months Ended

Dec. 31, 2015

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)			December 31,
				2015			2014
Automobiles	5	to	6	$	139		$	23
Leasehold improvements	5	to	20	3,397			2,144
Computer equipment	3	to	7	23,991			25,397
Machinery and equipment	3	to	5	10,867			6,709
Furniture and fixtures	5			1,605			1,108
Work in progress (1)	N/A			1,655			421
Total cost				41,654			35,802
Accumulated depreciation				(24,890		)	(26,168		)
				$	16,764		$	9,634

⁽¹⁾ Work in progress includes computer hardware and software and production tooling construction in progress.

Depreciation expense was as follows (in thousands):

	Year Ended December 31,
	2015		2014		2013
Depreciation expense	$	2,558	$	1,983	$	1,254