Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues
Total revenues	$ 3,195,000	$ 1,847,000	$ 8,866,000	$ 5,614,000
Expenses
Cost of sales	1,315,000	474,000	3,235,000	1,498,000
Research and development	616,000	670,000	1,879,000	2,054,000
Selling and marketing	608,000	657,000	1,940,000	1,790,000
General and administrative	1,319,000	1,016,000	4,026,000	3,290,000
Total expenses	3,858,000	2,817,000	11,080,000	8,632,000
Loss from operations	(663,000)	(970,000)	(2,214,000)	(3,018,000)
Other income (expense)
Change in fair value of warrant liability	758,000	(1,174,000)	1,092,000	(1,622,000)
Interest expense	(17,000)	(20,000)	(26,000)	(40,000)
Miscellaneous income	43,000		45,000
Total other income (expense)	784,000	(1,194,000)	1,111,000	(1,662,000)
Income (loss) before income taxes	121,000	(2,164,000)	(1,103,000)	(4,680,000)
Provision for income taxes			0
Net income (loss)	121,000	(2,164,000)	(1,103,000)	(4,680,000)
Net income (loss) applicable to common stockholders	$ 121,000	$ (2,164,000)	$ (1,103,000)	$ (4,680,000)
Net income (loss) per common share-basic	$ 0.02	$ (0.54)	$ (0.18)	$ (1.17)
Net income (loss) per common share-diluted	$ 0.02	$ (0.54)	$ (0.18)	$ (1.17)
Weighted average shares-basic	6,337	4,020	6,233	3,989
Weighted average shares-diluted	6,404	4,020	6,233	3,989
Product
Revenues
Total revenues	$ 3,195,000	$ 1,847,000	$ 8,866,000	$ 5,614,000