Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current Assets:
Cash	$ 2,630	$ 2,510
Accounts receivable - less allowances of $0 in 2020 and 2019	975	745
Inventories	828	924
Prepaid expenses and other current assets	346	56
Total Current Assets	4,779	4,235
Other assets	309	0
Deferred income taxes, net	759	395
Equity investment	750	0
Property, plant and equipment, net	847	174
Operating lease right-of-use assets	1,203	947
Total Assets	8,647	5,751
Current Liabilities:
Accounts payable	300	210
Accrued liabilities	1,019	761
Operating lease liability	316	171
Income taxes payable	2	0
Total Current Liabilities	1,637	1,142
Other liabilities	203	0
Operating lease liability	891	776
Total Liabilities	2,731	1,918
Commitments and Contingencies (Note 12)
Stockholders' Equity:
Common stock, par value $0.01 per share, authorized 75,000,000; 10,750,100 issued in 2020 and 10,586,170 issued in 2019	108	106
Additional paid-in capital	137,365	137,230
Accumulated deficit	(117,793)	(119,739)
Common stock in treasury, at cost, 1,015,493 shares in both 2020 and 2019	(13,764)	(13,764)
Total stockholders' equity	5,916	3,833
Total Liabilities and Stockholders' Equity	$ 8,647	$ 5,751