CONSOLIDATED BALANCE SHEETS (USD $)	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 40,242,102	$ 55,135,508
Short-term investments	29,758,608
Deferred financing costs, short-term	375,808
Prepaid expenses and other current assets	2,025,358	153,210
Restricted cash		20,000
Total current assets	72,401,876	55,308,718
Property and equipment, net	466,395	139,577
Long-term investments	3,033,840
Intangible assets	35,230,516
Goodwill	14,326,396
Deferred financing costs, long-term	1,487,711
Other assets	1,277,480	54,126
Total assets	128,224,214	55,502,421
Current liabilities:
Accounts payable	1,774,182	1,215,198
Accrued expenses	3,926,456	2,921,458
Derivative liabilities	427,144	793,744
Total current liabilities	6,127,782	4,930,400
Convertible notes payable, net of discount of $19,172,978	27,827,022
Derivative liabilities	3,555,000
Deferred taxes	14,303,589
Contingent consideration and other liabilities	23,524,774	22,968
Total liabilities	75,338,167	4,953,368
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.0001 par value; 25,000,000 shares authorized, none issued and outstanding
Common stock, $0.0001 par value; 100,000,000 shares authorized, 22,199,256 and 22,307,138 shares issued and outstanding at December 31, 2013 and June 30, 2014, respectively	2,231	2,220
Additional paid-in capital	157,443,941	140,419,071
Cumulative unrealized loss on investments	(2,004)
Cumulative translation adjustment	2,622
Accumulated deficit	(104,560,743)	(89,872,238)
Total stockholders' equity	52,886,047	50,549,053
Total liabilities and stockholders' equity	$ 128,224,214	$ 55,502,421