Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Revenue	$ 5,044	$ 19,630
Cost of goods sold	10,552	45,638
Gross loss	(5,508)	(26,008)
Operating expenses:
General and administrative	4,510	7,695
Sales and marketing	775	1,444
Research and development	962	2,550
Long-lived asset impairment charge	5,051	26,554
Loss (gain) on disposal of assets	1,118	(1,534)
Loss from operations	(17,924)	(62,717)
Other income (expense):
Interest income	116	73
Interest expense		(99)
Realized gain (loss) on foreign currency translation	45	(359)
Total other income (expense)	161	(385)
Loss before income taxes	(17,763)	(63,102)
Income tax (expense) benefit	(88)	223
Net loss	$ (17,851)	$ (62,879)
Net loss per common share
Basic	$ (6.6)	$ (23.86)
Diluted	$ (6.6)	$ (23.86)
Weighted average common shares outstanding used in computing net loss per common share
Basic	2,702,926	2,635,636
Diluted	2,702,926	2,635,636