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Palo Verde (Tables)
3 Months Ended
Mar. 31, 2017
Palo Verde Generating Station  
Palo Verde Operations & Maintenance Expenses [Line Items]  
Operations & Maintenance Expenses
Palo Verde Operations and Maintenance Expense. Included in other operations and maintenance expenses are expenses associated with Palo Verde as follows (in thousands):
 
 
2017
 
2016
Three months ended March 31,
 
$
21,608

 
$
22,343

Twelve months ended March 31,
 
96,179

 
98,134