Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 1,279	$ 5,480
Accounts receivable	799	786
Inventories	1,797	1,658
Other current assets	161	203
Total current assets	4,036	8,127
Property, plant and equipment, net	991	536
Operating lease right-of-use asset, net	442	0
Other assets	133	113
TOTAL ASSETS	5,602	8,776
Current liabilities
Accounts payable	1,488	1,133
Accrued compensation	1,592	1,498
Current portion of operating lease liability	186	0
Other current liabilities	85	209
Total current liabilities	3,351	2,840
Operating lease liability	261	0
Total liabilities	3,612	2,840
Commitments and contingencies
Stockholders' equity
Preferred stock	0	0
Common stock as of December 31, 2019 and December 31, 2018, par value $0.0001 per share; authorized 100,000,000 shares, issued and outstanding 4,674,068 and 513,445, respectively	0	0
Additional paid-in capital	218,278	204,101
Accumulated other comprehensive income:
Foreign currency translation adjustment	1,214	1,223
Accumulated deficit	(217,502)	(199,388)
Total stockholders' equity	1,990	5,936
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	5,602	8,776
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