Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Unbilled Accounts Receivable

Accounts receivable includes unbilled energy revenues of the following amounts as of December 31 (dollars in thousands):

	2021		2020
Unbilled accounts receivable	$	74,479	$	71,258

Schedule of Utilities Operating Revenue Expense Taxes

Utility-related taxes that were included in revenue from contracts with customers were as follows for the years ended December 31 (dollars in thousands):

	2021		2020		2019
Utility-related taxes	$	62,736	$	59,319	$	59,528

Disaggregation of Revenue

Disaggregation of Total Operating Revenue

The following table disaggregates total operating revenue by segment and source for the years ended December 31 (dollars in thousands):

	2021			2020			2019
Avista Utilities
Revenue from contracts with customers	$	1,233,904		$	1,157,746		$	1,152,125
Derivative revenues		152,590			110,313			118,741
Alternative revenue programs		(6,635	)		(3,814	)		9,614
Deferrals and amortizations for rate refunds to customers		2,984			5,335			4,509
Other utility revenues		10,156			7,888			10,884
Total Avista Utilities		1,392,999			1,277,468			1,295,873
AEL&P
Revenue from contracts with customers		45,051			42,624			36,779
Deferrals and amortizations for rate refunds to customers		(190	)		(190	)		(190	)
Other utility revenues		505			375			676
Total AEL&P		45,366			42,809			37,265
Other
Revenue from contracts with customers		2			564			11,286
Other revenues		569			1,050			1,198
Total Other		571			1,614			12,484
Total operating revenues	$	1,438,936		$	1,321,891		$	1,345,622

Utility Revenue from Contracts with Customers by Type and Service

The following table disaggregates revenue from contracts with customers associated with the Company's electric operations for the years ended December 31 (dollars in thousands):

	2021						2020						2019
	Avista Utilities		AEL&P		Total Utility		Avista Utilities		AEL&P		Total Utility		Avista Utilities		AEL&P		Total Utility
ELECTRIC OPERATIONS
Revenue from    contracts with    customers
Residential	$	394,717	$	18,940	$	413,657	$	377,785	$	18,618	$	396,403	$	369,102	$	17,134	$	386,236
Commercial and    governmental		326,173		25,861		352,034		303,972		23,754		327,726		317,589		19,391		336,980
Industrial		106,756		—		106,756		103,103		—		103,103		105,802		—		105,802
Public street and    highway lighting		7,472		250		7,722		7,303		252		7,555		7,448		254		7,702
Total retail    revenue		835,118		45,051		880,169		792,163		42,624		834,787		799,941		36,779		836,720
Transmission		21,005		—		21,005		18,236		—		18,236		18,180		—		18,180
Other revenue from    contracts with    customers		33,870		—		33,870		19,252		—		19,252		26,969		—		26,969
Total revenue    from contracts    with customers	$	889,993	$	45,051	$	935,044	$	829,651	$	42,624	$	872,275	$	845,090	$	36,779	$	881,869

The following table disaggregates revenue from contracts with customers associated with the Company's natural gas operations for the years ended December 31 (dollars in thousands):

	2021		2020		2019
	Avista Utilities		Avista Utilities		Avista Utilities
NATURAL GAS OPERATIONS
Revenue from contracts with customers
Residential	$	221,405	$	213,612	$	196,430
Commercial		100,819		94,937		92,168
Industrial and interruptible		7,796		7,128		5,263
Total retail revenue		330,020		315,677		293,861
Transportation		8,547		7,917		8,674
Other revenue from contracts with customers		5,344		4,501		4,500
Total revenue from contracts with customers	$	343,911	$	328,095	$	307,035