Accounts Payable and Accrued Expenses

12 Months Ended

Dec. 31, 2014

Payables and Accruals [Abstract]

Accounts Payable and Accrued Expenses

Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses consist of the following:

	As of December 31,
	2014		2013
Accounts payable	$	99,508	$	61,936
Accrued payroll and related costs	92,778		69,429
Accrued clinical trial expense	41,555		23,654
Accrued sales-related charges, deductions, and royalties	133,085		66,855
Other accrued expenses and liabilities	117,302		29,022
	$	484,228	$	250,896

Included within "other accrued expenses and liabilities" as of December 31, 2014 is $59.8 million payable to a warrant holder in February 2015 in connection with an agreement to reduce a portion of the number of warrants held. See Note 12.