Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 14,437	$ 1,279
Accounts receivable	905	799
Inventories	2,957	1,797
Other current assets	237	161
Total current assets	18,536	4,036
Property, plant and equipment, net	1,200	991
Operating lease right-of-use asset, net	255	442
Other assets	21	133
TOTAL ASSETS	20,012	5,602
Current liabilities
Accounts payable	1,097	1,488
Accrued compensation	2,192	1,592
Current portion of operating lease liability	206	186
Current portion of finance lease liability	24	0
Other current liabilities	66	85
Total current liabilities	3,585	3,351
Operating lease liability	55	261
Finance lease liability	54	0
Total liabilities	3,694	3,612
Commitments and contingencies
Stockholders' equity
Preferred stock	0	0
Common stock as of December 31, 2020 and December 31, 2019, par value $0.0001 per share; authorized 100,000,000 shares, issued and outstanding 2,736,060 and 155,802, respectively	0	0
Additional paid-in capital	249,663	218,278
Accumulated other comprehensive income:
Foreign currency translation adjustment	(7)	1,214
Accumulated deficit	(233,338)	(217,502)
Total stockholders' equity	16,318	1,990
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	20,012	5,602
Series A Junior Participating Preferred Stock [Member]
Stockholders' equity
Preferred stock	0	0
Series F Convertible Preferred Stock [Member]
Stockholders' equity
Preferred stock	$ 0	$ 0