Consolidated Balance Sheets - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 3,691,000	$ 3,863,000
Restricted cash	100,000	100,000
Accounts receivable, net	1,583,000	1,630,000
Inventories, net	1,360,000	2,444,000
Prepaid expenses and other current assets	166,000	219,000
Total current assets	6,900,000	8,256,000
Property and equipment, net	286,000	446,000
Other assets	77,000	25,000
Total assets	7,263,000	8,727,000
Current liabilities:
Accounts payable	888,000	756,000
Accrued payroll and related liabilities	222,000	332,000
Deferred service revenue	787,000	994,000
Other accrued liabilities	359,000	467,000
Total current liabilities	2,256,000	2,549,000
Other long-term liabilities	63,000	27,000
Deferred service revenue, long term	105,000	104,000
Total long term liabilities	168,000	131,000
Total liabilities	2,424,000	2,680,000
Commitments and contingencies (Note 10)
Shareholders’ equity:
Preferred stock, no par value; 5,000 shares authorized; no shares issued
Common stock, no par value; 50,000 shares authorized; 2,042 shares issued and outstanding as of December 31, 2016 and 2015, respectively	19,063,000	19,061,000
Accumulated deficit	(14,224,000)	(13,014,000)
Total shareholders’ equity	4,839,000	6,047,000
Total liabilities and shareholders’ equity	$ 7,263,000	$ 8,727,000