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

12 Months Ended

Dec. 31, 2013

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:

	December 31,
	2013		2012
Clinical and preclinical trials	$	34,182	$	25,150
Payroll and payroll-related		23,832		13,439
Accrued professional services and other current liabilities		9,379		6,368
Royalties payable		6,377		2,296
Accounts payable		3,290		2,073
Interest payable		1,698		1,698
Total	$	78,758	$	51,024