Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenue	$ 8,910	$ 14,268
Cost of goods sold	14,019	21,762
Gross loss	(5,109)	(7,494)
Operating expenses:
General and administrative	2,068	2,388
Sales and marketing	338	467
Research and development	433	576
Loss from operations	(7,948)	(10,925)
Other income:
Interest income	16	21
Interest expense	(23)	(23)
Realized (loss) gain on foreign currency translation	(357)	39
Total other (expense) income	(364)	37
Loss before income taxes	(8,312)	(10,888)
Income tax expense	36	6
Net loss	$ (8,348)	$ (10,894)
Net loss per common share
Basic	$ (0.32)	$ (0.43)
Diluted	$ (0.32)	$ (0.43)
Weighted average common shares outstanding used in computing net loss per common share basic and diluted	26,129,276	25,317,147