Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 4,271,000	$ 4,781,000
Restricted cash	100,000	100,000
Accounts receivables, net	2,177,000	1,809,000
Inventories, net	2,728,000	2,897,000
Prepaid expenses and other current assets	250,000	180,000
Total current assets	9,526,000	9,767,000
Non-current assets:
Property and equipment, net	132,000	112,000
Right-of-use	734,000
Other assets	133,000	119,000
Total non-current assets	999,000	231,000
Total assets	10,525,000	9,998,000
Current liabilities:
Accounts payable	1,325,000	1,023,000
Accrued payroll and related liabilities	177,000	185,000
Deferred service revenue, short-term	671,000	736,000
Lease liabilities, current	272,000
Other accrued liabilities	405,000	559,000
Total current liabilities	2,850,000	2,503,000
Long-term liabilities:
Other long-term liabilities	53,000	40,000
Lease liabilities, long term	495,000
Deferred service revenue	257,000	127,000
Total long-term liabilities	804,000	167,000
Total liabilities	3,654,000	2,670,000
Shareholders’ equity:
Preferred stock, no par value; 5,000,000 shares authorized; no shares issued	0	0
Common stock, no par value; 50,000,000 shares authorized, shares issued and outstanding 1,914,852 at September 30, 2019 and 2,030,017 shares at December 31, 2018	18,790,000	19,426,000
Accumulated deficit	(11,919,000)	(12,098,000)
Total shareholders’ equity	6,871,000	7,328,000
Total liabilities and shareholders’ equity	$ 10,525,000	$ 9,998,000