Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 3,545	$ 3,190
Accounts receivable, net of allowance for doubtful accounts of $78 and $20, respectively	3,722	3,339
Inventories	779	335
Prepaid expenses and other current assets	441	255
Total current assets	8,487	7,119
Property and equipment:
Furniture and fixtures	163	164
Leasehold improvements	8	26
Equipment	1,114	998
Property and equipment, Gross	1,285	1,188
Accumulated depreciation	867	702
Property and equipment, Net	418	486
Intangible assets, net	3,239	3,485
Deferred income taxes	37	38
TOTAL ASSETS	12,181	11,128
Current liabilities:
Accounts payable	564	563
Warranty	698	858
Accrued compensation	200	288
Other current liabilities	596	778
Total current liabilities	2,058	2,487
TOTAL LIABILITIES	2,058	2,487
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, 5,273,873 and 5,210,448 issued and outstanding at September 30, 2018 and December 31, 2017, respectively	52	51
Additional paid-in capital	24,508	24,355
Accumulated other comprehensive loss	(327)	(310)
Accumulated deficit	(14,110)	(15,455)
Total shareholders' equity	10,123	8,641
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 12,181	$ 11,128