Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2013

Property Plant And Equipment [Abstract]

Property and Equipment

Property and equipment consisted of the following at December 31:

	Useful Life (Years)	2013			2012
		(In thousands)
Manufacturing equipment	5	$	3,333		$	2,854
Prototype systems	2		1,893			1,893
Computer equipment	3		1,325			651
Furniture and fixtures	5		543			517
Leasehold improvements	Various		4,713			4,713
Construction in progress			—			14
			11,807			10,642
Less: Accumulated depreciation and amortization			(8,742	)		(6,968	)
		$	3,065		$	3,674