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Segment Information (Details Textual) (USD $)
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3 Months Ended | ||
|---|---|---|---|
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Mar. 31, 2012
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Mar. 31, 2011
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Dec. 31, 2011
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| Segment Reporting Information [Line Items] | |||
| Total assets for the Company's Segment | $ 1,532,406,000 | $ 1,446,209,000 | |
| Segment Information (Textual) [Abstract] | |||
| Number of countries where the products are sold | 81 | ||
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Primary Reporting Segment [Member]
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| Segment Reporting Information [Line Items] | |||
| Total assets for the Company's Segment | 1,435,800,000 | 1,357,400,000 | |
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China [Member]
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| Segment Reporting Information [Line Items] | |||
| China salesperson compensation and service fee costs | 25,800,000 | 21,800,000 | |
| Total assets for the Company's Segment | $ 96,600,000 | $ 88,800,000 | |
| X | ||||||||||
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- Definition
Foreign salesperson compensation and service fee costs. No definition available.
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| X | ||||||||||
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- Definition
Number of countries where the products are sold. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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