Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 5,425	$ 5,118
Accounts receivable, net of allowance for doubtful accounts of $4 and $19 respectively	2,898	3,126
Inventories	686	781
Prepaid expenses and other current assets	571	463
Total current assets	9,580	9,488
Property and equipment:
Furniture and fixtures	147	163
Leasehold improvements	6	6
Equipment	1,413	1,339
Property and equipment, Gross	1,566	1,508
Accumulated depreciation	1,122	1,089
Property and equipment, Net	444	419
Operating lease assets, net	115	181
Intangible assets, net	3,722	3,875
Deferred income taxes	5,218	5,220
TOTAL ASSETS	19,079	19,183
Current liabilities:
Accounts payable	570	373
Deferred revenue	18	28
Warranty	220	313
Accrued compensation	181	105
Operating lease obligations	102	0
Other current liabilities	200	412
Total current liabilities	1,291	1,231
Operating lease obligations	13	19
TOTAL LIABILITIES	1,304	1,250
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, 5,331,799 and 5,322,849 issued and outstanding at March 31, 2020 and December 31, 2019, respectively	53	53
Additional paid-in capital	24,810	24,751
Accumulated other comprehensive loss	(412)	(306)
Accumulated deficit	(6,676)	(6,565)
Total shareholders' equity	17,775	17,933
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 19,079	$ 19,183