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Capitalization (Tables)
6 Months Ended
Jun. 30, 2013
Capitalization Tables  
Schedule of carrying amount and fair value of bonds

The carrying amount and fair value of the Company’s bonds were as follows:

 

   (Thousands of Dollars)
   June 30, 2013  December 31, 2012
   Carrying  Fair  Carrying  Fair
   Amount  Value  Amount  Value
First Mortgage Bonds  $89,565   $84,195   $91,938   $93,556 
SRF Bonds  $701   $704   $708   $712