Accounts Payable and Accrued Expenses

6 Months Ended

Jun. 30, 2012

Accounts Payable and Accrued Expenses [Abstract]

Accounts Payable and Accrued Expenses

8.   Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses as of June 30, 2012 and December 31, 2011 consist of the following:

	June 30,    2012	December 31,   2011
Accounts payable	$25,672	$27,736
Accrued payroll and related costs	35,458	42,835
Accrued clinical trial expense	14,029	9,850
Accrued sales-related deductions and royalties	36,386	3,947
Other accrued expenses and liabilities	15,223	11,257
	$126,768	$95,625