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DERIVATIVE FINANCIAL INSTRUMENTS: Level 3 (Tables)
3 Months Ended
Sep. 30, 2011
Derivative Financial Instruments [Abstract] 
Schedule of Derivative Instruments [Table Text Block]
Idaho Power had the following volumes of derivative commodity forward contracts and swaps outstanding at September 30, 2011 and 2010:
 
 
 
 
September 30,
Commodity
 
Units
 
2011
 
2010
Electricity purchases
 
MWh
 
197,800
 
443,250

Electricity sales
 
MWh
 
1,038,095
 
237,000

Natural gas purchases
 
MMBtu
 
2,292,738
 
325,500

Natural gas sales
 
MMBtu
 
77,500
 

Diesel purchases
 
Gallons
 
266,375
 
208,980

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
The following tables present the fair values and locations of derivative instruments not designated as hedging instruments recorded on the balance sheets at September 30, 2011 and December 31, 2010 (in thousands of dollars):
 
 
Asset Derivatives
 
Liability Derivatives
 
 
Balance Sheet
 
Fair
 
Balance Sheet
 
Fair
 
 
Location
 
Value
 
Location
 
Value
September 30, 2011
 
 
 
 
 
 
 
 
Current:
 
 
 
 

 
 
 
 

Financial swaps
 
Other current assets
 
$
4,192

 
Other current assets
 
$
900

Financial swaps
 
Other current liabilities
 

 
Other current liabilities
 
356

Forward contracts
 
Other current assets
 
80

 
Other current liabilities
 
406

Long-term:
 
 
 
 

 
 
 
 
Financial swaps
 
Other assets
 
559

 
Other assets
 
25

Financial swaps
 
 
 
 
 
Other liabilities
 
344

Total
 
 
 
$
4,831

 
 
 
$
2,031

December 31, 2010
 
 
 
 
 
 
 
 
Current:
 
 
 
 

 
 
 
 

Financial swaps
 
Other current assets
 
$
930

 
Other current assets
 
$
356

Financial swaps
 
Other current liabilities
 
2,440

 
Other current liabilities
 
4,172

Forward contracts
 
 
 
 
 
Other current liabilities
 
508

Long-term:
 
 
 
 

 
 
 
 

Financial swaps
 
Other liabilities
 
100

 
Other liabilities
 
138

Total
 
 
 
$
3,470

 
 
 
$
5,174

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]
The following table presents the gains and losses on derivatives not designated as hedging instruments for the three and nine months ended September 30, 2011 and 2010 (in thousands of dollars):
 
 
Location of Gain/(Loss)
 
Gain/(Loss)
 
 
on Derivatives
 
on Derivatives
Commodity Derivatives
 
Recognized in Income
 
Recognized in Income(1)
Three months ended September 30, 2011:
 
 
 
 

Financial swaps
 
Off-system sales
 
$
441

Financial swaps
 
Purchased power
 
(6,982
)
Financial swaps
 
Fuel expense
 
115

Financial swaps
 
Other operations and maintenance
 
120

Three months ended September 30, 2010:
 
 
 
 
Financial swaps
 
Off-system sales
 
$
2,332

Financial swaps
 
Purchased power
 
(6,749
)
Financial swaps
 
Fuel expense
 
(101
)
Forward contracts
 
Fuel expense
 
(721
)
Nine months ended September 30, 2011:
 
 
 
 
Financial swaps
 
Off-system sales
 
$
6,947

Financial swaps
 
Purchased power
 
(6,954
)
Financial swaps
 
Fuel expense
 
501

Financial swaps
 
Other operations and maintenance
 
347

Nine months ended September 30, 2010:
 
 
 
 
Financial swaps
 
Off-system sales
 
$
3,284

Financial swaps
 
Purchased power
 
(9,135
)
Financial swaps
 
Fuel expense
 
(101
)
Forward contracts
 
Fuel expense
 
(721
)
(1)  Excludes changes in fair value of derivatives, which are recorded on the balance sheet as regulatory assets or regulatory liabilities.