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Committed Lines of Credit
9 Months Ended
Sep. 30, 2015
Short-term Debt [Abstract]  
Committed Lines of Credit
COMMITTED LINES OF CREDIT
Avista Corp.
Avista Corp. has a committed line of credit with various financial institutions in the total amount of $400.0 million that expires in April 2019.
Balances outstanding and interest rates of borrowings (excluding letters of credit) under the Company’s revolving committed lines of credit were as follows as of September 30, 2015 and December 31, 2014 (dollars in thousands):
 
September 30,
 
December 31,
 
2015
 
2014
Borrowings outstanding at end of period
$
130,000

 
$
105,000

Letters of credit outstanding at end of period
$
43,812

 
$
32,579

Average interest rate on borrowings at end of period
0.95
%
 
0.93
%

AEL&P
AEL&P has a committed line of credit in the amount of $25.0 million that expires in November 2019. As of September 30, 2015 and December 31, 2014, there were no borrowings outstanding under this committed line of credit.