Schedule of Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets And Liabilities [Line Items]
Gross	$ 152,498	$ 153,126
Accumulated Amortization	52,287	46,119
Net Book Value	100,211us-gaap_FiniteLivedIntangibleAssetsNet	107,007us-gaap_FiniteLivedIntangibleAssetsNet
Product Rights
Finite-Lived Intangible Assets And Liabilities [Line Items]
Gross	138,466	139,094
Accumulated Amortization	49,733	44,254
Net Book Value	88,733	94,840
Customer Lists
Finite-Lived Intangible Assets And Liabilities [Line Items]
Gross	1,091	1,091
Accumulated Amortization	437	328
Net Book Value	654	763
Trademarks
Finite-Lived Intangible Assets And Liabilities [Line Items]
Gross	12,941	12,941
Accumulated Amortization	2,117	1,537
Net Book Value	$ 10,824	$ 11,404

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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+ References

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