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           Supplemental Cash Flow Information and Disclosures of Non-Cash Transactions (Tables) 
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           Sep. 30, 2012 
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| Supplemental Cash Flow Information [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Supplemental cash flow information and disclosures of non-cash transactions | 
 The following table provides supplemental disclosure of cash flow information (in thousands):  
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- Definition 
          Tabular disclosure of supplemental cash flow information for the periods presented. No definition available. 
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- Details 
          
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