Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and equipment consisted of the following at December 31:

	Useful Life (Years)	2014			2013
		(In thousands)
Manufacturing equipment	5	$	3,654		$	3,333
Lease and loaner instruments	1–5		2,629			—
Prototype instruments	2		2,157			1,893
Computer equipment	3		1,430			1,325
Furniture and fixtures	5		831			543
Leasehold improvements	Various		4,888			4,713
Construction in progress			1,058			—
			16,647			11,807
Less: Accumulated depreciation and amortization			(10,281	)		(8,742	)
		$	6,366		$	3,065