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Schedule of Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Finite-Lived Intangible Assets And Liabilities [Line Items] |  |  |  |
Gross | $ 189,038 | $ 188,826 |  |
Accumulated Amortization | 67,605 | 59,666 |  |
Net Book Value | 121,433 | 129,160 | $ 100,211 | $ 107,007
Product Rights |  |  |  |
Finite-Lived Intangible Assets And Liabilities [Line Items] |  |  |  |
Gross | 167,906 | 167,694 |  |
Accumulated Amortization | 63,141 | 56,233 |  |
Net Book Value | 104,765 | 111,461 |  |
Customer Lists |  |  |  |
Finite-Lived Intangible Assets And Liabilities [Line Items] |  |  |  |
Gross | 3,091 | 3,091 |  |
Accumulated Amortization | 1,053 | 744 |  |
Net Book Value | 2,038 | 2,347 |  |
Trademarks |  |  |  |
Finite-Lived Intangible Assets And Liabilities [Line Items] |  |  |  |
Gross | 18,041 | 18,041 |  |
Accumulated Amortization | 3,411 | 2,689 |  |
Net Book Value | $ 14,630 | $ 15,352 |  |

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- Definition 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=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before 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=66006027&loc=d3e16323-109275 + Details
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