Business Combinations - Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination (Details) (MedPak Holdings, Inc. [Member], USD $) In Thousands, unless otherwise specified	0 Months Ended
	May 21, 2012	May 21, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 83,900	$ 83,900
Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	6,800	6,800
Useful Life (Years)	12 years
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	50,500	50,500
Acquired Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 26,600	$ 26,600
Useful Life (Years)	20 years
Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	12 years
Minimum [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	28 years
Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	30 years
Maximum [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	30 years