CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues:
Product sales	$ 12,823	$ 13,590	$ 26,931	$ 24,439
Total revenues	12,823	13,590	26,931	24,439
Costs and expenses:
Cost of product sales	7,300	6,901	13,860	12,469
Gross profit	5,523	6,689	13,071	11,970
Research and development	4,058	3,369	7,594	7,746
Selling, general and administrative	6,449	5,585	12,453	11,061
Total operating expenses	10,507	8,954	20,047	18,807
Loss from operations	(4,984)	(2,265)	(6,976)	(6,837)
Other income (expense):
Decrease (increase) in fair value of warrants	1,942	112	302	(205)
Foreign currency translation (loss) gain	(1)	(6)	(11)	(10)
Interest income	2	9	7	22
Interest expense	(3)	(2)	(6)	(4)
Other expense	0	0	(10)	0
Total other income (expense)	1,940	113	282	(177)
Net loss	$ (3,044)	$ (2,152)	$ (6,694)	$ (7,014)
Net loss per share attributable to common shareholders (Basic and Diluted) (see note 11)	$ (0.22)	$ (0.16)	$ (0.46)	$ (0.43)
Weighted average number of common shares outstanding (Basic and Diluted)	22,684	23,786	22,644	23,786