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Regulatory Assets and Liabilities (Tables)
9 Months Ended
Sep. 30, 2011
Regulatory Assets and Liabilities [Abstract] 
Regulatory Assets and Liabilities
The following chart summarizes Cleco Power’s regulatory assets and liabilities at September 30, 2011, and December 31, 2010:

   
AT SEPTEMBER 30,
  
AT DECEMBER 31,
 
(THOUSANDS)
 
2011
  
2010
 
Regulatory assets – deferred taxes, net
 $213,847  $203,696 
Deferred mining costs
 $19,755  $21,666 
Deferred interest costs
  6,758   7,033 
Deferred asset removal costs
  814   768 
Deferred postretirement plan costs
  113,538   117,651 
Deferred tree trimming costs
  9,057   11,086 
Deferred training costs
  7,525   7,642 
Deferred storm surcredits, net
  9,080   10,633 
Deferred construction carrying costs
  12,416   18,830 
Lignite mining agreement contingency
  3,781   3,781 
AFUDC equity gross-up
  74,496   74,859 
Deferred rate case costs
  1,252   1,654 
Deferred Acadia Unit 1 acquisition costs
  2,997   3,076 
Deferred IRP/RFP costs
  625   977 
Deferred AMI pilot costs
  185   283 
Total regulatory assets – other
 $262,279  $279,939 
Deferred construction carrying costs
  (40,298)  (87,875)
Deferred fuel and purchased power
  9,162   10,348 
Total regulatory assets, net
 $444,990  $406,108