STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Net Sales	$ 297	$ 52
Cost of sales	241	45
Gross profit	56	7
Operating expenses:
Research and development	2,404	3,191
Selling, general and administrative	9,532	9,132
Total operating expenses	11,936	12,323
Net operating loss	(11,880)	(12,316)
Other income (expense):
Interest income	25	29
Interest expense	(74)	(85)
Interest expense, related parties		(1)
Other income (expense)	21	87
Total other income (expense)	(28)	30
Net loss and comprehensive loss	(11,908)	(12,286)
Deemed dividend-warrant antidilution price protection adjustment	333
Net loss attributable to common shareholders	$ (12,241)	$ (12,286)
Loss per share attributable to common shareholders, basic and diluted (in dollars per share)	$ (0.63)	$ (1.12)
Weighted average common shares outstanding - basic and fully diluted (in shares)	19,402,091	10,920,909