Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 4,229	$ 4,236
Accounts receivable, net of allowance for doubtful accounts of $73 and $72, respectively	3,548	3,830
Inventories	681	1,289
Prepaid expenses and other current assets	463	410
Total current assets	8,921	9,765
Property and equipment:
Furniture and fixtures	162	162
Leasehold improvements	6	8
Equipment	1,224	1,058
Property and equipment, Gross	1,392	1,228
Accumulated depreciation	985	882
Property and equipment, Net	407	346
Operating lease assets, net	309	0
Intangible assets, net	3,780	3,317
Deferred income taxes	58	56
TOTAL ASSETS	13,475	13,484
Current liabilities:
Accounts payable	426	878
Deferred revenue	84	716
Warranty	564	656
Accrued compensation	87	224
Operating lease obligations	259	0
Other current liabilities	302	373
Total current liabilities	1,722	2,847
Operating lease obligations	51	0
TOTAL LIABILITIES	1,773	2,847
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, 5,309,259 and 5,278,485 issued and outstanding at June 30, 2019 and December 31, 2018, respectively	52	52
Additional paid-in capital	24,637	24,550
Accumulated other comprehensive loss	(382)	(372)
Accumulated deficit	(12,605)	(13,593)
Total shareholders' equity	11,702	10,637
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 13,475	$ 13,484