Property and Equipment

6 Months Ended

Jun. 30, 2015

Property, Plant and Equipment [Abstract]

Property and Equipment

PROPERTY AND EQUIPMENT

Property and equipment are stated at cost and depreciated using the straight-line method over the estimated useful lives of the related assets and consist of the following (in thousands):

	June 30, 2015			December 31, 2014
Equipment (useful life 3 to 15 years)	$	1,608		$	1,495
Tooling (useful life 2 to 5 years)	865			865
Furniture and fixtures (useful life 5 years)	102			92
Computer software (useful life 3 years)	452			452
Leasehold improvements (the shorter of useful life or lease life)	573			572
Construction in progress	257			18
Property and equipment at cost	3,857			3,494
Less: accumulated depreciation	(3,125		)	(3,015		)
Property and equipment, net	$	732		$	479

Depreciation expense was $55 thousand and $57 thousand for the three months ended June 30, 2015 and 2014, respectively. For the six months ended June 30, 2015 and 2014, depreciation expense was $107 thousand and $114 thousand, respectively.