Net Product Sales (Tables)

3 Months Ended

Mar. 31, 2013

Revenues [Abstract]

Sales Related Deductions Activity

The following table summarizes the provisions, and credits/payments, for these sales-related deductions during the three months ended March 31, 2013.

	Rebates & Chargebacks			Distribution- Related Fees			Other Sales- Related Deductions			Total
Balance as of December 31, 2012	$	2,983		$	15,298		$	545		$	18,826
Provision related to current period sales	5,537			13,916			208			19,661
Credits/payments	(4,844		)	(11,521		)	(218		)	(16,583		)
Balance as of March 31, 2013	$	3,676		$	17,693		$	535		$	21,904