Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Revenue	$ 19,630	$ 23,818
Cost of goods sold	45,638	46,961
Gross loss	(26,008)	(23,143)
Operating expenses:
General and administrative	7,695	9,589
Sales and marketing	1,444	1,363
Research and development	2,550	2,210
Long-lived asset impairment charge	26,554	39,597
(Gain) loss on disposal of assets	(1,534)	47
Loss from operations	(62,717)	(75,949)
Other income (expense):
Interest income	73	71
Interest expense	(99)	(109)
Realized loss on foreign currency translation	(359)	(1,869)
Total other expense	(385)	(1,907)
Loss before income taxes	(63,102)	(77,856)
Income tax benefit	223	26
Net loss	$ (62,879)	$ (77,830)
Net loss per common share
Basic	$ (2.39)	$ (2.98)
Diluted	$ (2.39)	$ (2.98)
Weighted average common shares outstanding used in computing net loss per common share
Basic	26,356,359	26,156,170
Diluted	26,356,359	26,156,170