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Supplemental Disclosure to Statements of Cash Flows
9 Months Ended
Sep. 30, 2011
Supplemental Disclosure to Statements of Cash Flows [Abstract] 
Supplemental Disclosure to Statements of Cash Flows
Supplemental Disclosure to Statements of Cash Flows
The following are supplemental disclosures to the statements of cash flows for the nine months ended September 30, 2011 and 2010 (amounts in thousands):
 
 
2011
 
2010
 Write-off of fully depreciated/amortized property and deferred costs
$
12,364

 
$
31,610

 Write-off of depreciated property and deferred costs due to sale
$
107,456

 
$
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