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NOTES PAYABLE: Level 3 (Tables)
3 Months Ended
Mar. 31, 2016
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 March 31, 2016 and December 31, 2015:
 
 
March 31, 2016
 
December 31, 2015
 
 
Idaho Power
 
IDACORP
 
Total
 
Idaho Power
 
IDACORP
 
Total
Commercial paper outstanding
 
$

 
$
23,300

 
$
23,300

 
$

 
$
20,000

 
$
20,000

Weighted-average annual interest rate
 
%
 
0.81
%
 
0.81
%
 
%
 
0.88
%
 
0.88
%