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NOTES PAYABLE: Level 3 (Tables)
9 Months Ended
Sep. 30, 2015
Shedule of short term debt [Abstract]  
Schedule of Short-term Debt
Balances (in thousands of dollars) and interest rates of IDACORP’s and Idaho Power's short-term borrowings were as follows at September 30, 2015 and December 31, 2014:
 
 
September 30, 2015
 
December 31, 2014
 
 
Idaho Power
 
IDACORP
 
Total
 
Idaho Power
 
IDACORP
 
Total
Commercial paper outstanding
 
$

 
$
3,600

 
$
3,600

 
$

 
$
31,300

 
$
31,300

Weighted-average annual interest rate
 
%
 
0.56
%
 
0.56
%
 
%
 
0.43
%
 
0.43
%