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Product Acquisitions - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2008 | Dec. 31, 2012 Cost of Sales | Dec. 31, 2011 Cost of Sales | Dec. 31, 2012 Costs and Expenses | Dec. 31, 2011 Costs and Expenses | Dec. 07, 2010 Mocap Country | Dec. 07, 2010 Nemacur Country | Dec. 31, 2012 Product Rights | Dec. 31, 2012 Customer Lists | Dec. 31, 2012 Trademarks
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of registered countries |  |  |  |  |  |  |  |  | 50 | 30 |  |  |
Intangible assets acquired | $ 3,473 | $ 316 | $ 32,677 |  |  |  |  |  |  |  |  |  |
Payment made toward Intangible Assets acquired during period | 2,400 |  | 20,655 |  |  |  |  |  |  |  |  |  |
Acquisition cost associated with the product acquisition | 7,447 |  | 401 | 400 |  |  |  |  |  |  |  |  |
Purchased product line |  | 6,802 |  |  |  |  |  |  |  |  |  |  |
Expected useful life |  |  |  |  |  |  |  |  |  |  | 25 years | 10 years | 25 years
Fair value reduction | 189 | 2,857 |  |  | 0 | 495 | 189 | 2,362 |  |  |  |  |
Total product acquisition obligation | 11,900 |  |  |  |  |  |  |  |  |  |  |  |
Product acquisition obligation, Other Liability | 5,746 |  |  |  |  |  |  |  |  |  |  |  |
Product acquisition obligation, Debt | $ 6,154 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The aggregate cost of a major indefinite-lived intangible asset class acquired, during the period, either individually or as part of a group of assets (in either an asset acquisition or business combination). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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