Nature of Business and Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Nature of Business and Accounting Policies

Schedule of product revenues allowances and reserve categories

	Trade Allowances			Rebates, Chargebacks and Discounts			Product Returns			Other Incentives			Total
	(in thousands)
Balance at May 23, 2011	$	—		$	—		$	—		$	—		$	—
Provision related to current period sales		38,228			75,145			553			9,692			123,618
Credits/payments made for current period sales		(27,066	)		(22,486	)		(213	)		(4,490	)		(54,255	)
Balance at December 31, 2011	$	11,162		$	52,659		$	340		$	5,202		$	69,363

Summary of gross revenues and accounts receivable, net from customers representing 10% or more of total gross revenues and /or accounts receivable, net

	Percent of Total Gross Revenues									Percent of Accounts Receivable, Net
	Year Ended December 31,									At December 31,
	2011			2010			2009			2011			2010
AmerisourceBergen Drug Corporation		25	%		—			—			35	%		—
McKesson Corporation		24	%		—			—			30	%		—
Cardinal Health Incorporated		15	%		—			—			20	%		—
Janssen		19	%		21	%		54	%		10	%		12	%
Mitsubishi Tanabe Pharma Corporation		<10	%		57	%		18	%		<10	%		55	%
GlaxoSmithKline plc		<10	%		<10	%		<10	%		<10	%		23	%