Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2016

Long-term Debt, Unclassified [Abstract]

Schedule of Capital Leased Assets [Table Text Block]

The balances related to the Snettisham capital lease obligation as of March 31, 2016 and December 31, 2015 were as follows (dollars in thousands):

	March 31,		December 31,
	2016		2015
Capital lease obligation (1)	$	63,881	$	64,455
Capital lease asset (2)	71,007		71,007
Accumulated amortization of capital lease asset (2)	6,372		5,462

(1) The capital lease obligation amount is equal to the amount of AIDEA's revenue bonds outstanding.

(2) These amounts are included in utility plant in service on the Condensed Consolidated Balance Sheet.

Interest on the capital lease obligation and amortization of the capital lease asset are included in utility resource costs in the Condensed Consolidated Statements of Income and totaled the following amounts for the three months ended March 31 (dollars in thousands):

	2016		2015
Interest on capital lease obligation	$	789	$	923
Amortization of capital lease asset	910		910

Schedule of Maturities of Long-term Debt [Table Text Block]

The following table details future capital lease obligations, including interest, under the Snettisham power purchase agreement (dollars in thousands):

	Remaining
	2016		2017		2018		2019		2020		Thereafter		Total
Principal	$	1,721	$	2,415	$	2,535	$	2,660	$	2,800	$	51,750	$	63,881
Interest	2,368		3,042		2,921		2,795		2,662		19,195		32,983
Total	$	4,089	$	5,457	$	5,456	$	5,455	$	5,462	$	70,945	$	96,864

Long-term Debt Outstanding

Maturity		Interest	March 31,			December 31,
Year	Description	Rate	2016			2015
Avista Corp. Secured Long-Term Debt
2016	First Mortgage Bonds	0.84%	$	90,000		$	90,000
2018	First Mortgage Bonds	5.95%	250,000			250,000
2018	Secured Medium-Term Notes	7.39%-7.45%	22,500			22,500
2019	First Mortgage Bonds	5.45%	90,000			90,000
2020	First Mortgage Bonds	3.89%	52,000			52,000
2022	First Mortgage Bonds	5.13%	250,000			250,000
2023	Secured Medium-Term Notes	7.18%-7.54%	13,500			13,500
2028	Secured Medium-Term Notes	6.37%	25,000			25,000
2032	Secured Pollution Control Bonds (1)	(1)	66,700			66,700
2034	Secured Pollution Control Bonds (1)	(1)	17,000			17,000
2035	First Mortgage Bonds	6.25%	150,000			150,000
2037	First Mortgage Bonds	5.70%	150,000			150,000
2040	First Mortgage Bonds	5.55%	35,000			35,000
2041	First Mortgage Bonds	4.45%	85,000			85,000
2044	First Mortgage Bonds	4.11%	60,000			60,000
2045	First Mortgage Bonds	4.37%	100,000			100,000
2047	First Mortgage Bonds	4.23%	80,000			80,000
	Total Avista Corp. secured long-term debt		1,536,700			1,536,700
Alaska Electric Light and Power Company Secured Long-Term Debt
2044	First Mortgage Bonds	4.54%	75,000			75,000
	Total consolidated secured long-term debt		1,611,700			1,611,700
Alaska Energy and Resources Company Unsecured Long-Term Debt
2019	Unsecured Term Loan	3.85%	15,000			15,000
	Total secured and unsecured long-term debt		1,626,700			1,626,700
Other Long-Term Debt Components
	Capital lease obligations		67,810			68,601
	Settled interest rate swaps (2)		(26,334		)	(26,515		)
	Unamortized debt discount		(916		)	(956		)
	Unamortized long-term debt issuance costs		(10,572		)	(10,852		)
	Total		1,656,688			1,656,978
	Secured Pollution Control Bonds held by Avista Corporation (1)		(83,700		)	(83,700		)
	Current portion of long-term debt and capital leases		(93,197		)	(93,167		)
	Total long-term debt and capital leases		$	1,479,791		$	1,480,111

(1) In December 2010, $66.7 million and $17.0 million of the City of Forsyth, Montana Pollution Control Revenue Refunding Bonds (Avista Corporation Colstrip Project) due in 2032 and 2034, respectively, which had been held by Avista Corp. since 2008 and 2009, respectively, were refunded by new bond issues (Series 2010A and 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, 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 Condensed Consolidated Balance Sheets.

(2) 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.