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Supplemental Disclosure to Statements of Cash Flows (Tables)
9 Months Ended
Sep. 30, 2011
Supplemental Disclosure to Statements of Cash Flows [Abstract] 
Supplemental Disclosure to Statements of Cash Flows
 
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

 
$