Intangible Assets (Details Textual) (USD $) In Thousands  | 
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2011  | 
Sep. 30, 2010  | 
Sep. 30, 2011  | 
Sep. 30, 2010  | 
 Jul. 31, 2008
 
Trademarks [Member] 
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| Intangible Assets (Textual) [Abstract] | |||||
| Purchase price related to merger | $ 250,000 | ||||
| Amortization expense | $ 14,570 | $ 16,228 | $ 44,833 | $ 50,342 | |
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- Definition Intangible Assets. 
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- Definition The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will not be amortized. Does not include goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Aggregate amount of intangible asset amortization recognized as expense during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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