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

6 Months Ended

Jun. 30, 2014

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, 2014		December 31, 2013
Clinical and preclinical activities	$	30,318	$	34,182
Payroll and payroll-related		13,914		23,832
Accrued professional services and other current liabilities		11,626		9,379
Royalties and milestones payable		11,352		6,377
Accounts payable		9,287		3,290
Interest payable		1,698		1,698
Total	$	78,195	$	78,758