Consolidated Balance Sheets (USD $)	Jun. 30, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 4,105,954	$ 8,055,385
Cash restricted pursuant to letters of credit	52,488	302,488
Current portion of deferred financing costs	968,004	968,004
Prepaid expenses and other current assets	208,499	49,221
Total current assets	5,334,945	9,375,098
Property and Equipment, at cost:
Computer equipment	333,329	323,488
Office and laboratory equipment (including assets under capitalized leases)	740,177	728,152
Furniture and fixtures	755,444	755,444
Manufacturing equipment	111,980	111,980
Leasehold improvements	825,589	825,589
Property and equipment, at cost	2,766,519	2,744,653
Less-Accumulated depreciation and amortization	(1,436,980)	(1,248,846)
Net property and equipment (including assets under capitalized leases)	1,329,539	1,495,807
Other Assets:
Restricted cash	10,490	10,490
Intangible assets, net of accumulated amortization	9,625,000	9,625,000
Deferred financing costs	2,097,322	2,581,324
Other assets	1,000	1,576
Total other assets	11,733,812	12,218,390
Total assets	18,398,296	23,089,295
Current Liabilities:
Accounts payable	1,032,360	1,036,320
Current portion of deferred revenue from licensing arrangements	76,428	76,428
Current portion of capital lease obligation		1,361
Derivative warrant liability	586,155	1,119,155
Accrued expenses and other liabilities	884,201	1,411,107
Total current liabilities	2,579,144	3,644,371
Deferred revenue from licensing arrangements, net of current portion	38,214	76,428
Total liabilities	2,617,358	3,720,799
Convertible Preferred Stock:
Common Stock, $0.01 par value, authorized 150,000,000 shares, issued and outstanding 12,665,518 and 11,776,578 shares at June 30, 2014 and December 31, 2013, respectively	126,654	117,764
Additional paid-in capital	135,133,217	132,192,648
Accumulated deficit	(119,506,429)	(112,969,412)
Total stockholders' equity	15,780,938	19,368,496
Total liabilities and stockholders' equity	18,398,296	23,089,295
Series C Preferred Stock [Member]
Convertible Preferred Stock:
Series C, $0.01 par value, authorized 10,000 shares, issued and outstanding 1,000 shares at June 30, 2014 and December 31, 2013; Series D, $0.01 par value, authorized 3,600,000 shares, issued and outstanding 1,000,000 shares at June 30, 2014 and December 31, 2013 (preference in liquidation of $1,000,000); Series E, $0.01 par value, authorized 1,748,613 shares, issued and outstanding 1,748,613 shares at March 31June 30, 2014 and December 31, 2013	10	10
Series D Preferred Stock [Member]
Convertible Preferred Stock:
Series C, $0.01 par value, authorized 10,000 shares, issued and outstanding 1,000 shares at June 30, 2014 and December 31, 2013; Series D, $0.01 par value, authorized 3,600,000 shares, issued and outstanding 1,000,000 shares at June 30, 2014 and December 31, 2013 (preference in liquidation of $1,000,000); Series E, $0.01 par value, authorized 1,748,613 shares, issued and outstanding 1,748,613 shares at March 31June 30, 2014 and December 31, 2013	10,000	10,000
Series E Preferred Stock [Member]
Convertible Preferred Stock:
Series C, $0.01 par value, authorized 10,000 shares, issued and outstanding 1,000 shares at June 30, 2014 and December 31, 2013; Series D, $0.01 par value, authorized 3,600,000 shares, issued and outstanding 1,000,000 shares at June 30, 2014 and December 31, 2013 (preference in liquidation of $1,000,000); Series E, $0.01 par value, authorized 1,748,613 shares, issued and outstanding 1,748,613 shares at March 31June 30, 2014 and December 31, 2013	$ 17,486	$ 17,486