Accounts Receivable (Schedule of Accounts Affected by the Estimated Provisions) (Details) (USD $) In Thousands, unless otherwise specified	36 Months Ended		12 Months Ended										3 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013 Successor [Member]		Dec. 31, 2012 Successor [Member]		Dec. 31, 2013 Successor [Member] Chargebacks [Member]		Dec. 31, 2012 Successor [Member] Chargebacks [Member]		Dec. 31, 2013 Successor [Member] Rebates and incentive programs [Member]	Dec. 31, 2012 Successor [Member] Rebates and incentive programs [Member]	Mar. 31, 2012 Successor [Member] Returns [Member]		Dec. 31, 2013 Successor [Member] Returns [Member]		Dec. 31, 2012 Successor [Member] Returns [Member]		Dec. 31, 2013 Successor [Member] Cash discounts and other [Member]	Dec. 31, 2012 Successor [Member] Cash discounts and other [Member]	Dec. 31, 2011 Predecessor [Member]		Dec. 31, 2011 Predecessor [Member] Chargebacks [Member]		Dec. 31, 2011 Predecessor [Member] Rebates and incentive programs [Member]	Dec. 31, 2011 Predecessor [Member] Returns [Member]	Dec. 31, 2011 Predecessor [Member] Cash discounts and other [Member]
Accounts Receivable Reserves [Roll Forward]
Beginning balance			$ (195,702)		$ (143,164)		$ (41,670)		$ (20,688)		$ (59,426)	$ (35,132)	$ (58,672)		$ (68,062)		$ (58,672)		$ (26,544)	$ (28,672)	$ (108,289)		$ (19,482)		$ (23,273)	$ (48,928)	$ (16,606)
Anchen opening balance																					(10,434)		(1,633)		(1,427)	(1,748)	(5,626)
Provision recorded for current period sales			(1,154,619)		(841,192)		(630,097)		(442,245)		(290,934)	(216,861)			(37,956)		(33,315)		(195,632)	(148,771)	(519,677)		(261,335)		(121,804)	(30,577)	(105,961)
(Provision) reversal recorded for prior period sales			2,223		734		0	[1]	0	[1]	659	(59)	(1,600)	[2]	0	[2]	1,602	[2]	1,564	(809)	568		0	[1]	660	265	(357)
Credits processed			1,108,037		787,920		623,001		421,263		274,380	192,626			27,837		22,323		182,819	151,708	494,668		261,762		110,712	22,316	99,878
Ending balance			(240,061)		(195,702)		(48,766)		(41,670)		(75,321)	(59,426)			(78,181)		(68,062)		(37,793)	(26,544)	(143,164)		(20,688)		(35,132)	(58,672)	(28,672)
Accrued Liabilities [Roll Forward]
Beginning balance		(35,829)	(42,162)	[3]	(39,614)	[3]															(32,169)	[3]
Anchen opening balance																					(571)	[3]
Provision recorded for current period sales			(80,726)	[3]	(73,973)	[3]															(55,853)	[3]
(Provision) reversal recorded for prior period sales			3,566	[3],[4]	0	[3]															224	[3]
Credits processed			83,493	[3]	71,425	[3]															48,755	[3]
Ending balance	(42,162)	(35,829)	(35,829)	[3]	(42,162)	[3]															(39,614)	[3]
Increase (Decrease) in Employee Related Liabilities	$ (3,600)

[1] Unless specific in nature, the amount of provision or reversal of reserves related to prior periods for chargebacks is not determinable on a product or customer specific basis; however, based upon historical analysis and analysis of activity in subsequent periods, we believe that our chargeback estimates remain reasonable.

[2] The amount principally represents the resolution of a customer dispute in the first quarter of 2012 regarding invalid deductions taken in prior years of approximately $1,600 thousand.

[3] Includes amounts due to indirect customers for which no underlying accounts receivable exists and is principally comprised of Medicaid rebates and rebates due under other U.S. Government pricing programs, such as TriCare and the Department of Veterans Affairs.

[4] Based upon additional available information related to Managed Medicaid utilization in California and a recalculation of average manufacturer’s price, we reduced our Medicaid accruals for the periods January 2010 through December 2012 by approximately $3,600 thousand. Our Medicaid accrual represents our best estimate at this time.