Accounts Payable, Accrued Expenses and Other Current Liabilities (Tables)

6 Months Ended

Jun. 30, 2015

Payables and Accruals [Abstract]

Components of Accounts Payable, Accrued Expenses and Other Current Liabilities

Accounts payable, accrued expenses and other current liabilities consisted of the following:

	June 30, 2015		December 31, 2014
Clinical and preclinical	$	35,676	$	31,069
Accrued professional services and other current liabilities		17,117		8,909
Payroll and payroll-related		19,285		33,272
Royalties payable		18,860		13,582
Accounts payable		12,754		10,492
Other payable to licensor		14,057		5,000
Interest payable		1,101		1,698
Taxes payable		—		2,106
Total	$	118,850	$	106,128