Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Unaudited Financial Data

The following tables summarize the Company’s quarterly financial information for the years ended December 31, 2014 and 2013 (in thousands except per share amounts):

	Three Months Ended
	March 31, 2014			June 30, 2014			September 30, 2014			December 31, 2014
Product revenue	$	7,866		$	8,601		$	10,362		$	9,587
Gross profit on product revenue		3,709			3,849			4,673			2,997
Net loss	$	(225	)	$	(7,589	)	$	(10,759	)	$	(20,182	)
Net loss per common share:
Basic	$	(0.00	)	$	(0.10	)	$	(0.14	)	$	(0.26	)
Diluted	$	(0.12	)	$	(0.16	)	$	(0.16	)	$	(0.26	)

	Three Months Ended
	March 31, 2013			June 30, 2013			September 30, 2013			December 31, 2013
Product revenue	$	9,733		$	10,150		$	10,542		$	9,232
Gross profit on product revenue		4,643			4,403			3,716			4,293
Net loss	$	(10,252	)	$	(6,724	)	$	(20,501	)	$	(5,860	)
Net loss per common share:
Basic	$	(0.17	)	$	(0.10	)	$	(0.29	)	$	(0.08	)
Diluted	$	(0.17	)	$	(0.10	)	$	(0.29	)	$	(0.10	)