Consolidated Balance Sheets (USD $)	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 5,028,280	$ 592,004
Other current assets	1,694,010	1,077,546
Total current assets	6,722,290	1,669,550
Property & equipment, net of accumulated depreciation of $1,661,719 and $1,494,510, respectively	1,229,333	1,265,041
Restricted cash	500,000	1,000,000
Deferred financing costs, net of amortization of $157,603 and $58,639, respectively	112,515	211,479
Other long-term assets	96,064
Total assets	8,660,202	4,146,070
Current liabilities:
Accounts payable	1,156,071	412,096
Accrued expenses	1,209,515	473,879
Deferred revenue	1,395,348
Total current liabilities	3,760,934	885,975
Long term liabilities:
Deferred revenue	3,035,715
Total liabilities	7,318,591	1,262,738
Commitments and contingencies
Stockholders' equity:
Preferred stock, no par value, 10,000,000 shares authorized, none issued and outstanding
Common stock, $0.01 par value, 100,000,000 shares authorized, 7,991,559 and 6,249,369 shares issued and outstanding	79,916	62,494
Additional paid in capital	118,047,227	112,432,458
Deficit accumulated during the development stage	(116,785,532)	(109,611,620)
Total stockholders' equity	1,341,611	2,883,332
Total liabilities and stockholders' equity	8,660,202	4,146,070
Unrelated Party
Long term liabilities:
Convertible debt, net of unamortized discount	418,701	318,658
Related Party Transactions
Long term liabilities:
Convertible debt, net of unamortized discount	$ 103,241	$ 58,105