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Jointly Owned Electric Facilities (Tables)
12 Months Ended
Dec. 31, 2014
Jointly Owned Utility Plant, Net Ownership Amount [Abstract]  
Schedule Of Jointly Owned Electric Facilities
 
2014
 
2013
Utility plant in service
$
350,518

 
$
349,781

Accumulated depreciation
(239,845
)
 
(239,538
)