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           Intangible Assets and Goodwill (Tables) 
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        3 Months Ended | ||||||||||||||||||||||||
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           Mar. 31, 2013 
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| Intangible Assets [Abstract] | |||||||||||||||||||||||||
| Schedule Of Amortization Expense [Table Text Block] | 
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| Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] | 
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- Definition 
          Tabular disclosure of amortization expense. No definition available. 
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- Details 
          
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- Definition 
          Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. No definition available. 
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