Consolidated Statements of Operations and Comprehensive Loss (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Net sales	$ 7,137	$ 2,514	$ 21,846	$ 8,714
Cost of sales	6,047	2,264	18,630	8,194
Gross profit	1,090	250	3,216	520
Selling, general and administrative expenses	4,604	3,990	12,350	5,373
Operating loss	(3,514)	(3,740)	(9,134)	(4,853)
Other expense:
Interest, net	(506)	(221)	(1,078)	(422)
Other income, net	509	128	991	113
Loss before provision for income taxes	(3,511)	(3,833)	(9,221)	(5,162)
Provision for income taxes	(220)		(220)
Net loss	$ (3,731)	$ (3,833)	$ (9,441)	$ (5,162)
Net loss per share (basic and diluted)	$ (0.71)	$ (6.05)	$ (3.25)	$ (8.68)
Basic and diluted weighted-average number of common shares outstanding	5,270	633	2,909	595
Comprehensive loss:
Net loss	$ (3,731)	$ (3,833)	$ (9,441)	$ (5,162)
Foreign currency translation adjustments			(788)
Comprehensive loss	$ (3,731)	$ (3,833)	$ (10,229)	$ (5,162)