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Statements of Operations and Comprehensive Income (Loss) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Income Statement [Abstract]        
Revenue $ 15,027,004 $ 55,074 $ 15,027,004 $ 3,862,665
Costs and expenses:        
Research and development 5,357,696 2,883,777 9,239,417 5,626,709
General and administrative 1,605,092 668,253 2,829,995 1,274,192
Total costs and expenses 6,962,788 3,552,030 12,069,412 6,900,901
Income (loss) from operations 8,064,216 (3,496,956) 2,957,592 (3,038,236)
Other income (expense) 4,263 (104) 9,036 865
Income (loss) and comprehensive income (loss) before income taxes 8,068,479 (3,497,060) 2,966,628 (3,037,371)
Income tax expense 76,758   76,758 0
Net income (loss) and net comprehensive income (loss) $ 7,991,721 $ (3,497,060) $ 2,889,870 $ (3,037,371)
Basic net income (loss) per common share $ 0.42 $ (3.70) $ 0.16 $ (3.24)
Diluted net income (loss) per common share $ 0.39 $ (3.70) $ 0.15 $ (3.24)
Basic weighted average number of common shares 18,807,675 946,363 18,020,121 938,446
Diluted weighted average number of common shares 20,238,343 946,363 19,472,995 938,446