Property and Equipment

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

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

	December 31, 2015			December 31, 2014
Manufacturing equipment	$	22,049		$	24,643
Office equipment and software	25,087			30,702
Leasehold improvements	4,183			5,163
Property and equipment, gross	51,319			60,508
Less: accumulated depreciation and amortization	(45,185		)	(50,722		)
Property and equipment, net	$	6,134		$	9,786

Depreciation expense associated with property and equipment for the years ended December 31, 2015, 2014 and 2013 was $5.6 million, $7.0 million and $8.0 million.