Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 8,386,605	$ 7,777,718
Accounts receivable, net of allowance of $301,459 and $640,183 in 2013 and 2012, respectively	8,096,385	11,570,489
Inventories	4,738,032	5,098,241
Prepaid expenses and other current assets	1,918,412	3,492,067
Total current assets	23,139,434	27,938,515
Property and equipment, net	1,419,320	2,141,923
Intangible assets, net	1,754,445	1,979,320
Long-term receivables	19,975	73,199
Other assets	33,815	32,987
Total assets	26,366,989	32,165,944
Current liabilities:
Short-term debt and current maturities of long-term debt	3,242,800	12,264,490
Accounts payable	3,193,816	3,556,688
Accrued liabilities	6,839,797	5,361,810
Deferred revenue	7,399,431	9,502,939
Warrants and debt conversion features	4,955,588	2,968,348
Total current liabilities	25,631,432	33,654,275
Long-term debt, less current maturities	18,242,083	16,824,736
Long-term deferred revenue	293,047	477,159
Other liabilities
Stockholders' deficit:
Preferred stock, par value $0.001; 10,000,000 shares authorized, none outstanding at 2013 and 2012
Common stock, par value $0.001; 300,000,000 shares authorized, 15,925,480 and 8,018,615 shares issued at 2013 and 2012, respectively	15,925	8,019
Additional paid in capital	431,831,756	366,053,627
Treasury stock, 4,015 shares at 2013 and 2012	(205,999)	(205,999)
Accumulated deficit	(449,441,255)	(384,645,873)
Total stockholders' deficit	(17,799,573)	(18,790,226)
Total liabilities and stockholders' deficit	$ 26,366,989	$ 32,165,944