Segment and Related Information (Tables)

12 Months Ended

Dec. 31, 2022

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Financial data for the business segments for the twelve months ended are as follows (in thousands):

December 31, 2022	Electric		Gas		Other		Eliminations		Total
Operating revenues	$	1,106,565	$	371,272	$	—	$	—	$	1,477,837
Fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion shown separately below)	324,434		167,577		—		—		492,011
Utility Margin	782,131		203,695		—		—		985,826
Operating and maintenance	167,798		53,629		—		—		221,427
Administrative and general	82,405		31,002		369		—		113,776
Property and other taxes	149,781		42,734		9		—		192,524
Depreciation and depletion	162,404		32,616		—		—		195,020
Operating income (loss)	219,743		43,714		(378)		—		263,079
Interest expense, net	(74,420)		(13,030)		(12,660)		—		(100,110)
Other income, net	12,491		6,399		544		—		19,434
Income tax benefit (expense)	798		(3,108)		2,915		—		605
Net income (loss)	$	158,612	$	33,975	$	(9,579)	$	—	$	183,008
Total assets	$	5,892,508	$	1,418,059	$	7,216	$	—	$	7,317,783
Capital expenditures	$	409,707	$	105,433	$	—	$	—	$	515,140

December 31, 2021	Electric		Gas		Other		Eliminations		Total
Operating revenues	$	1,052,182	$	320,134	$	—	$	—	$	1,372,316
Fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion shown separately below)	294,820		130,728		—		—		425,548
Utility margin	757,362		189,406		—		—		946,768
Operating and maintenance	156,383		51,920		—		—		208,303
Administrative and general	72,641		27,550		1,682		—		101,873
Property and other taxes	134,910		38,526		8		—		173,444
Depreciation and depletion	154,626		32,841		—		—		187,467
Operating income (loss)	238,802		38,569		(1,690)		—		275,681
Interest expense, net	(82,678)		(6,083)		(4,913)		—		(93,674)
Other income, net	3,676		3,046		1,530		—		8,252
Income tax (expense) benefit	(2,512)		(2,640)		1,733		—		(3,419)
Net income (loss)	$	157,288	$	32,892	$	(3,340)	$	—	$	186,840
Total assets	$	5,432,578	$	1,342,031	$	5,834	$	—	$	6,780,443
Capital expenditures	$	354,775	$	79,553	$	—	$	—	$	434,328

December 31, 2020	Electric		Gas		Other		Eliminations		Total
Operating revenues	$	940,815	$	257,855	$	—	$	—	$	1,198,670
Fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion shown separately below)	236,581		69,609		—		—		306,190
Utility margin	704,234		188,246		—		—		892,480
Operating and maintenance	149,220		53,771		—		—		202,991
Administrative and general	69,602		26,311		(1,789)		—		94,124
Property and other taxes	140,621		38,887		9		—		179,517
Depreciation and depletion	147,968		31,676		—		—		179,644
Operating income	196,823		37,601		1,780		—		236,204
Interest expense, net	(85,487)		(6,341)		(4,984)		—		(96,812)
Other income (expense), net	4,867		2,704		(2,718)		—		4,853
Income tax benefit (expense)	11,282		(2,426)		2,114		—		10,970
Net income (loss)	$	127,485	$	31,538	$	(3,808)	$	—	$	155,215
Total assets	$	5,126,589	$	1,251,240	$	11,620	$	—	$	6,389,449
Capital expenditures	$	324,369	$	81,393	$	—	$	—	$	405,762