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Accrued Liabilities (Summary of Accrued Liabilities) (Details) - USD ($)
Oct. 18, 2015
Apr. 24, 2015
Accrued Liabilities [Abstract]    
Employee related liabilities $ 26,581,552 $ 13,780,631
Taxes payable 1,756,466 2,083,392
Merger Related Expense Accruals 21,671,606 4,101,125
Clinical study costs 115,955 973,988
Other accrued liabilities 5,281,923 3,258,827
Accrued Liabilities, current, total $ 55,407,502 $ 24,197,963