Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Revenue	$ 7,086	$ 5,346	$ 14,908	$ 21,362
Cost of goods sold	18,732	9,237	36,024	35,517
Gross loss	(11,646)	(3,891)	(21,116)	(14,155)
Operating expenses:
General and administrative	1,709	3,037	6,171	7,293
Sales and marketing	395	287	1,147	979
Research and development	803	558	2,034	1,594
Loss on disposal of assets			126	22
Long-lived asset impairment charges	10,216	39,597	10,481	39,597
Loss from operations	(24,769)	(47,370)	(41,075)	(63,640)
Other income (expense):
Interest income	9	15	52	52
Interest expense	(28)	(29)	(98)	(76)
Realized (loss) gain on foreign currency translation	(229)	(1,475)	237	(2,036)
Total other income (expense)	(248)	(1,489)	191	(2,060)
Loss before income taxes	(25,017)	(48,859)	(40,884)	(65,700)
Income tax benefit	216	663	541	576
Net loss	$ (24,801)	$ (48,196)	$ (40,343)	$ (65,124)
Net loss per common share
Basic	$ (0.94)	$ (1.84)	$ (1.53)	$ (2.49)
Diluted	$ (0.94)	$ (1.84)	$ (1.53)	$ (2.49)
Weighted average common shares outstanding used in computing net loss per common share	26,374,516	26,160,308	26,374,516	26,143,948