CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 5,118	$ 4,236
Accounts receivable, net of allowance for doubtful accounts of $19 and $72, respectively	3,126	3,830
Inventories	781	1,289
Prepaid expenses and other current assets	463	410
Total current assets	9,488	9,765
Property and equipment:
Furniture and fixtures	163	162
Leasehold improvements	6	8
Equipment	1,339	1,058
Total property and equipment	1,508	1,228
Accumulated depreciation	1,089	882
Net property and equipment	419	346
Intangible assets, net	3,875	3,317
Deferred income taxes	5,220	56
Operating lease asset, net	181	0
TOTAL ASSETS	19,183	13,484
Current liabilities:
Accounts payable	373	878
Deferred revenue	28	716
Warranty	313	656
Accrued compensation	105	224
Other current liabilities	412	373
Total current liabilities	1,231	2,847
Non-current liabilities
Operating lease obligation	19	0
TOTAL LIABILITIES	1,250	2,847
Shareholders' equity
Preferred stock, $.01 par value; 5,000,000 shares authorized, none issued or outstanding	0	0
Common stock, $.01 par value; 20,000,000 shares authorized, 5,332,849 and 5,278,485 issued and outstanding, respectively	53	52
Additional paid-in capital	24,751	24,550
Accumulated other comprehensive loss	(306)	(372)
Accumulated deficit	(6,565)	(13,593)
Total shareholders' equity	17,933	10,637
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 19,183	$ 13,484