Consolidated Statements of Operations and Comprehensive Loss (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Sales	$ 113	$ 521	$ 206	$ 850
Operating Expenses
Cost of goods sold	238	1,156	458	2,038
Research and development	7,882	2,165	12,893	4,946
Sales and marketing	461	540	867	1,052
General and administrative	1,913	702	3,527	1,387
Total Operating Expenses	10,494	4,563	17,745	9,423
Operating Loss	(10,381)	(4,042)	(17,539)	(8,573)
Other (Expense) Income Interest expense, net	(206)	(243)	(527)	(489)
Total Other (Expense) Income, net	(206)	(243)	(527)	(489)
Net Loss	(10,587)	(4,285)	(18,066)	(9,062)
Other comprehensive income (loss)	0		0
Comprehensive loss	$ (10,587)	$ (4,285)	$ (18,066)	$ (9,062)
Net loss per share - basic and diluted	$ (0.18)	$ (3.97)	$ (0.33)	$ (8.41)
Weighted average common shares outstanding - basic and diluted	59,673	1,078	54,264	1,078