Commitments, Contingencies and Other Matters (Details) (USD $)	12 Months Ended		12 Months Ended			0 Months Ended			12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended		9 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Settlements and Loss Contingencies, Net [Member]	Dec. 31, 2013 Accrued Legal Settlements [Member]	Dec. 31, 2012 Patent Infringement Claim Brought by the Curators of the University of Missouri [Member] Infringement of US Patent [Member]	Nov. 21, 2013 AWP Claim Brought by State of Illinois [Member]	Jan. 28, 2014 AWP Claim Brought by State of Kansas [Member] Subsequent Event [Member]	Feb. 05, 2014 AWP Claim Brought by State of Utah [Member] Subsequent Event [Member]	Dec. 31, 2013 Anchen Subsidiary [Member] 100% of First 3% [Member]	Dec. 31, 2013 Anchen Subsidiary [Member] 50% of Next 2% [Member]	Dec. 31, 2012 Successor [Member]	Dec. 31, 2013 Successor [Member]	Dec. 31, 2012 Successor [Member] Anchen Subsidiary [Member]	Sep. 28, 2012 Predecessor [Member]	Dec. 31, 2012 Predecessor [Member]	Dec. 31, 2011 Predecessor [Member]	Sep. 28, 2012 Predecessor [Member] Anchen Subsidiary [Member]	Dec. 31, 2012 Predecessor [Member] Anchen Subsidiary [Member]	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Maximum [Member]
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Future minimum rental commitments total	$ 13,800,000
Future minimum rental commitments, 2014	5,200,000
Future minimum rental commitments, 2015	4,400,000
Future minimum rental commitments, 2016	2,500,000
Future minimum rental commitments, 2017	1,400,000
Future minimum rental commitments, thereafter	300,000
Rent expense charged to operations											1,600,000	6,300,000		4,800,000	4,900,000
Defined Contribution Plan:
Maximum annual contribution per employee, percent																			1.00%	25.00%
Employee matching contribution, percent of match	50.00%								100.00%	50.00%
Employer matching contribution, percent of employee's gross pay	6.00%								3.00%	2.00%
Annual vesting percentage	20.00%
Defined contribution plan expense											200,000	1,700,000	146,000	900,000	1,200,000		381,000	50,000
Loss Contingency [Abstract]
Accrued legal settlements	41,367,000	68,976,000		32,367,000	9,000,000
Settlements and loss contingencies, net			25,650,000								10,059,000	25,650,000		45,000,000		190,560,000
Litigation settlement						$ 28,500,000	$ 1,750,000	$ 2,100,000