Balance Sheets (USD $)	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 3,096,000	$ 8,431,000
Certificate of deposit, restricted	200,000	200,000
Accounts receivable, net	759,000	2,850,000
Inventories and supplies, net	4,036,000	4,455,000
Prepaid expenses and other current assets	242,000	482,000
Total current assets	8,333,000	16,418,000
Long term accounts receivable	79,000	100,000
Property and equipment, net	928,000	1,172,000
Total assets	9,340,000	17,690,000
Current liabilities:
Accounts payable	354,000	1,847,000
Deferred revenues	320,000	31,000
Accrued payroll and related expenses	266,000	922,000
Other accrued liabilities	517,000	1,739,000
Current portion of notes payable	62,000	63,000
Total current liabilities	1,519,000	4,602,000
Accrued interest payable	1,237,000	1,156,000
Notes payable, net of current portion	1,286,000	1,286,000
Total liabilities	4,042,000	7,044,000
Stockholders' equity:
Common Stock - no par value, 750,000,000 shares authorized; 42,765,000 and 31,479,000 shares issued and outstanding as of December 31, 2011 and December 31, 2010, respectively	145,380,000	144,110,000
Additional paid-in capital	9,408,000	9,040,000
Accumulated deficit	(151,112,000)	(144,128,000)
Total stockholders' equity	5,298,000	10,646,000
Total liabilities and stockholders' equity	9,340,000	17,690,000
Series A Preferred Stock [Member]
Stockholders' equity:
Convertible preferred stock	528,000	530,000
Total stockholders' equity	528,000	530,000
Series B Preferred Stock [Member]
Stockholders' equity:
Convertible preferred stock	1,094,000	1,094,000
Total stockholders' equity	$ 1,094,000	$ 1,094,000