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

3 Months Ended

Mar. 31, 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:

	March 31, 2014		December 31, 2013
Clinical and preclinical studies	$	39,807	$	34,182
Royalties and milestones payable		8,188		6,377
Accounts payable		9,388		3,290
Payroll and payroll-related		8,924		23,832
Accrued professional services and other current liabilities		8,451		9,379
Interest payable		3,396		1,698
Total	$	78,154	$	78,758