Consolidated Balance Sheets (USD $)	Sep. 30, 2011	Dec. 31, 2010
ASSETS
Cash	$ 1,013,841	$ 180,154
Accounts receivable, net of allowance for doubtful accounts of $5,149 and $5,149	843,723	837,890
Inventories	893,011	626,458
Other current assets	77,652	70,403
Total current assets	2,828,227	1,714,905
Property and equipment, net of accumulated depreciation of $7,748,096 and $7,768,893	435,851	645,346
Other assets, net	1,359,467	1,309,478
Total assets	4,623,545	3,669,729
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	939,528	945,816
Accrued payroll	221,975	225,144
Other accrued liabilities	747,842	481,165
Short-term note payable	225,000
Deferred revenue	176,207	176,207
Total current liabilities	2,310,552	1,828,332
Long-term liabilities:
Deferred revenue	1,003,861	1,136,016
Other long-term liabilities	255,687	324,551
Commitments
Shareholders' equity:
Common stock, no par value, 100,000,000 shares authorized; 18,908,594 shares issued and outstanding at September 30, 2011 and 18,455,094 at December 31, 2010	114,919,203	114,762,654
Accumulated deficit	(123,323,691)	(123,761,653)
Total shareholders' equity	1,053,445	380,830
Total liabilities and shareholders' equity	4,623,545	3,669,729
Series D Preferred Stock [Member]
Shareholders' equity:
Preferred stock	1,878,768	1,878,768
Series E Preferred Stock [Member]
Shareholders' equity:
Preferred stock	5,478,466	5,478,466
Series F Preferred Stock [Member]
Shareholders' equity:
Preferred stock	723,025	723,025
Series G Preferred Stock [Member]
Shareholders' equity:
Preferred stock	$ 1,377,674	$ 1,299,570