Condensed Consolidated Balance Sheets (USD $)	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 26,368,452	$ 25,681,092
Investment securities	20,069,278	18,711,448
Prepaid expenses and other current assets	1,126,150	1,135,490
Total current assets	47,563,880	45,528,030
Property and equipment, net	186,345	105,747
In-process research and development	8,549,000	6,549,000
Goodwill	3,006,883	3,006,883
Other assets	63,497	60,312
Total assets	59,369,605	55,249,972
Current liabilities:
Accounts payable	1,226,280	963,947
Accrued liabilities	3,478,823	2,495,088
Accrued compensation and payroll taxes	1,039,976	1,374,343
Total current liabilities	5,745,079	4,833,378
Deferred income tax liability	3,403,675	2,608,755
Total liabilities	9,148,754	7,442,133
Stockholders' equity:
Common stock, $0.001 par value; 500,000,000 shares authorized; 119,842,541 and 102,710,286 shares issued and outstanding at June 30, 2014 and December 31, 2013, respectively	119,843	102,710
Additional paid-in capital	270,070,217	254,154,693
Accumulated other comprehensive loss	(17,913)	(20,738)
Accumulated deficit	(219,951,296)	(206,428,826)
Total stockholders' equity	50,220,851	47,807,839
Total liabilities and stockholders' equity	$ 59,369,605	$ 55,249,972