Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 8,502	$ 8,605
Accounts receivable, net of allowance for doubtful accounts of $9 and $2 respectively	2,497	2,261
Inventories	1,485	770
Prepaid expenses and other current assets	567	480
Total current assets	13,051	12,116
Property and equipment:
Furniture and fixtures	136	154
Leasehold improvements	6	6
Equipment	977	1,215
Property and equipment, Gross	1,119	1,375
Accumulated depreciation	927	1,072
Property and equipment, Net	192	303
Operating lease assets, net	111	136
Intangible assets, net	2,759	3,161
Deferred income taxes	5,222	5,708
TOTAL ASSETS	21,335	21,424
Current liabilities:
Accounts payable	167	547
Deferred revenue	88	37
Warranty	127	141
Accrued compensation	88	148
Operating lease obligations	110	126
Short-term debt	0	349
Other current liabilities	139	124
Total current liabilities	719	1,472
Operating lease obligations	1	8
Long-term debt	0	574
TOTAL LIABILITIES	720	2,054
Shareholders' equity:
Preferred stock, $0.01 par value; 5,000,000 shares authorized, none issued or outstanding	0	0
Common stock, $0.01 par value; 20,000,000 shares authorized, 5,372,218 and 5,352,626 issued and outstanding at September 30, 2021 and December 31, 2020, respectively	54	54
Additional paid-in capital	25,105	24,968
Accumulated other comprehensive loss	(250)	(150)
Accumulated deficit	(4,294)	(5,502)
Total shareholders' equity	20,615	19,370
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 21,335	$ 21,424