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OTHER INCOME AND EXPENSE Other Income and Expense Level 3 (Tables)
 12 Months Ended
Dec. 31, 2011
OTHER INCOME AND EXPENSE [Abstract]  
Schedule of Other Nonoperating Income, by Component
The following table presents the components of IDACORP’s other income, net (in thousands of dollars):
 
 
2011
 
2010
 
2009
Allowance for funds used during construction-equity
 
$
25,484

 
$
16,551

 
$
7,555

Investment income, net
 
2,305

 
3,046

 
5,071

Carrying charges on regulatory assets
 
1,665

 
921

 
4,471

Other income
 
107

 
2,199

 
3,967

SMSP expense
 
(6,579
)
 
(5,709
)
 
(5,355
)
Life insurance proceeds, net of premiums
 
757

 
(93
)
 
4,197

Other expense
 
(2,530
)
 
(1,750
)
 
(2,909
)
Other income, net
 
$
21,209

 
$
15,165

 
$
16,997