Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 8,427	$ 8,605
Accounts receivable, net of allowance for doubtful accounts of $11 and $2 respectively	3,498	2,261
Inventories	723	770
Prepaid expenses and other current assets	430	480
Total current assets	13,078	12,116
Property and equipment:
Furniture and fixtures	137	154
Leasehold improvements	6	6
Equipment	978	1,215
Property and equipment, Gross	1,121	1,375
Accumulated depreciation	894	1,072
Property and equipment, Net	227	303
Operating lease assets, net	30	136
Intangible assets, net	2,957	3,161
Deferred income taxes	5,360	5,708
TOTAL ASSETS	21,652	21,424
Current liabilities:
Accounts payable	335	547
Deferred revenue	164	37
Warranty	142	141
Accrued compensation	85	148
Operating lease obligations	25	126
Short-term debt	0	349
Other current liabilities	243	124
Total current liabilities	994	1,472
Operating lease obligations	4	8
Long-term debt	0	574
TOTAL LIABILITIES	998	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, 5,367,186 and 5,352,626 issued and outstanding at June 30, 2021 and December 31, 2020, respectively	54	54
Additional paid-in capital	25,048	24,968
Accumulated other comprehensive loss	(185)	(150)
Accumulated deficit	(4,263)	(5,502)
Total shareholders' equity	20,654	19,370
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 21,652	$ 21,424