XML 152 R101.htm IDEA: XBRL DOCUMENT v2.4.0.8
Long-Term Debt (Schedule Of Long-Term Debt Instruments) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 1998
Debt Instrument [Line Items]        
Debt instrument, interest rate, stated percentage 1.11% 1.19% 1.40% 8.45%
Interest Rate, minimum 1.11% 1.19% 1.13%  
Interest Rate, maximum 1.19% 1.40% 1.40%  
Secured Debt $ 1,376,700 $ 1,336,700    
Other long-term debt and capital leases 1,272,425 1,178,367    
Settled interest rate swaps (23,560) [1] (27,900) [1]    
Unamortized debt discount (1,287) (1,453)    
Total 1,356,483 1,312,439    
Pollution Control Bonds (83,700) [2],[3] (83,700) [2],[3]    
Other Long-term Debt and Capital Lease Obligations 4,630 5,092    
Long-term Debt and Capital Lease Obligations, Current (358) (50,372)    
2013 | First Mortgage [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2013      
Debt instrument, interest rate, stated percentage 1.68%      
Secured Debt 0 50,000    
2016 | First Mortgage [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2016      
Debt instrument, interest rate, stated percentage 0.84%      
Secured Debt 90,000 0    
2018, 5.95% [Member] | First Mortgage [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2018      
Debt instrument, interest rate, stated percentage 5.95%      
Secured Debt 250,000 250,000    
2018, 7.39% - 7.45% [Member] | Secured Debt [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2018      
Interest Rate, minimum 7.39%      
Interest Rate, maximum 7.45%      
Medium-Term Notes, Noncurrent 22,500 22,500    
2019 [Member] | First Mortgage [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2019      
Debt instrument, interest rate, stated percentage 5.45%      
Secured Debt 90,000 90,000    
2020 [Member] | First Mortgage [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2020      
Debt instrument, interest rate, stated percentage 3.89%      
Secured Debt 52,000 52,000    
2022 [Member] | First Mortgage [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2022      
Debt instrument, interest rate, stated percentage 5.13%      
Secured Debt 250,000 250,000    
2023, 7.18% - 7.54% [Member] | Secured Debt [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2023      
Interest Rate, minimum 7.18%      
Interest Rate, maximum 7.54%      
Medium-Term Notes, Noncurrent 13,500 13,500    
2028 [Member] | Secured Debt [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2028      
Debt instrument, interest rate, stated percentage 6.37%      
Medium-Term Notes, Noncurrent 25,000 25,000    
2032 [Member] | Secured Debt [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2032 [3]      
Pollution Control Bonds 66,700 [3] 66,700 [3]    
2034 [Member] | Secured Debt [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2034 [2]      
Pollution Control Bonds 17,000 [2] 17,000 [2]    
2035 [Member] | First Mortgage [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2035      
Debt instrument, interest rate, stated percentage 6.25%      
Secured Debt 150,000 150,000    
2037 [Member] | First Mortgage [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2037      
Debt instrument, interest rate, stated percentage 5.70%      
Secured Debt 150,000 150,000    
2040 [Member] | First Mortgage [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2040      
Debt instrument, interest rate, stated percentage 5.55%      
Secured Debt 35,000 35,000    
2041 [Member] | First Mortgage [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2041      
Debt instrument, interest rate, stated percentage 4.45%      
Secured Debt 85,000 85,000    
2047 [Member] | First Mortgage [Member]
        
Debt Instrument [Line Items]        
Maturity Year 2047      
Debt instrument, interest rate, stated percentage 4.23%      
Secured Debt $ 80,000 $ 80,000    
[1] Upon settlement of interest rate swaps, these are recorded as a regulatory asset or liability and included as part of long-term debt above. They are amortized as a component of interest expense over the life of the associated debt and included as a part of the Company's cost of debt calculation for ratemaking purposes.
[2] In December 2010, $17.0 million of the City of Forsyth, Montana Pollution Control Revenue Refunding Bonds, (Avista Corporation Colstrip Project) due 2034, which had been held by Avista Corp. since 2009, were refunded by a new bond issue (Series 2010B). The new bonds were not offered to the public and were purchased by Avista Corp. due to market conditions. The Company expects that at a later date, subject to market conditions, the bonds may be remarketed to unaffiliated investors. So long as Avista Corp. is the holder of these bonds, the bonds will not be reflected as an asset or a liability on Avista Corp.'s Consolidated Balance Sheet.
[3] In December 2010, $66.7 million of the City of Forsyth, Montana Pollution Control Revenue Refunding Bonds (Avista Corporation Colstrip Project) due 2032, which had been held by Avista Corp. since 2008, were refunded by a new bond issue (Series 2010A). The new bonds were not offered to the public and were purchased by Avista Corp. due to market conditions. The Company expects that at a later date, subject to market conditions, these bonds may be remarketed to unaffiliated investors. So long as Avista Corp. is the holder of these bonds, the bonds will not be reflected as an asset or a liability on Avista Corp.'s Consolidated Balance Sheets.