Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
CURRENT ASSETS
Cash and cash equivalents	$ 18,342,736	$ 16,846,052
Short-term investments	15,000,000	0
Billed and unbilled receivables	11,359	10,000
Deferred financing fees, current portion	435,547	507,334
Prepaid expenses	319,616	255,733
Total current assets	34,109,258	17,619,119
Property and equipment, net	310,375	230,971
Patents, net	1,190,625	1,137,701
Deferred financing fees, net of current portion	248,688	360,848
Other assets	64,850	64,897
Total assets	35,923,796	19,413,536
CURRENT LIABILITIES
Accounts payable and accrued expenses	1,771,111	1,662,058
Current portion of long term debt, net of discount	2,849,812	2,763,121
Derivative instruments	0	1,417,527
Other current liabilities	53,280	93,426
Total current liabilities	4,674,203	5,936,132
Long term debt, net of discount and current portion	4,192,538	4,934,210
Other long term liabilities	160,338	124,995
Total liabilities	9,027,079	10,995,337
Commitments and contingencies (Note 6)
STOCKHOLDERS' EQUITY
Preferred stock, 7,000,000 shares authorized, zero shares issued and outstanding	0	0
Common stock, $0.01 par value; 150 million shares authorized, 86,688,613 and 77,886,031 shares outstanding in 2014 and 2013, respectively	866,886	778,860
Additional paid-in capital	160,368,948	136,058,135
Accumulated other comprehensive income	5,977	7,241
Accumulated deficit	(134,345,094)	(128,426,037)
Total stockholders' equity	26,896,717	8,418,199
Total liabilities and stockholders' equity	$ 35,923,796	$ 19,413,536