Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Machinery, equipment, furniture and fixtures	5 years
Software, computer hardware and manufacturing test fixtures	3 years
Engineering demonstration products and samples	1 year
Leasehold improvements	Lesser of the lease term or estimated useful lives

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

	December 31, 2016			December 31, 2015
Manufacturing equipment	$	24,982		$	22,049
Office equipment and software	23,090			25,087
Leasehold improvements	2,964			4,183
Property and equipment, gross	51,036			51,319
Less: accumulated depreciation and amortization	(44,323		)	(45,185		)
Property and equipment, net	$	6,713		$	6,134