Note 4 - Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2025

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Electricity		Natural Gas		Other		Total
	(in thousands)
Three Months Ended June 30, 2025
Fixed rate	$	55,400	$	2,653	$	—	$	58,053
Variable rate		34,485		6,454		—		40,939
Other		—		—		6,259		6,259
Total	$	89,885	$	9,107	$	6,259	$	105,251
Three Months Ended June 30, 2024
Fixed rate	$	47,207	$	3,295	$	—	$	50,502
Variable rate		31,094		5,119		—		36,213
Other		—		—		3,981		3,981
Total	$	78,301	$	8,414	$	3,981	$	90,696
Six Months Ended June 30, 2025
Fixed rate	$	114,304	$	9,583	$	—	$	123,887
Variable rate		79,644		27,933		—		107,577
Other		—		—		10,594		10,594
Total	$	193,948	$	37,516	$	10,594	$	242,058
Six Months Ended June 30, 2024
Fixed rate	$	99,303	$	10,724	$	—	$	110,027
Variable rate		68,394		20,088		—		88,482
Other		—		—		11,875		11,875
Total	$	167,697	$	30,812	$	11,875	$	210,384

	Electricity		Natural Gas		Other		Total
	(in thousands)
Three Months Ended June 30, 2025
Non-Commercial Channel	$	74,251	$	6,488	$	—	$	80,739
Commercial Channel		15,634		2,619		—		18,253
Other		—		—		6,259		6,259
Total	$	89,885	$	9,107	$	6,259	$	105,251
Three Months Ended June 30, 2024
Non-Commercial Channel	$	72,759	$	5,630	$	—	$	78,389
Commercial Channel		5,542		2,784		—		8,326
Other		—		—		3,981		3,981
Total	$	78,301	$	8,414	$	3,981	$	90,696
Six Months Ended June 30, 2025
Non-Commercial Channel	$	161,134	$	29,862	$	—	$	190,996
Commercial Channel		32,814		7,654		—		40,468
Other		—		—		10,594		10,594
Total	$	193,948	$	37,516	$	10,594	$	242,058
Six Months Ended June 30, 2024
Non-Commercial Channel	$	155,701	$	22,551	$	—	$	178,252
Commercial Channel		11,996		8,261		—		20,257
Other		—		—		11,875		11,875
Total	$	167,697	$	30,812	$	11,875	$	210,384

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

	Six Months Ended June 30,
	2025			2024
	(in thousands)
Contract liability, beginning	$	3,973		$	5,582
Recognition of revenue included in the beginning of the year contract liability		(2,975	)		(3,691	)
Additions during the period, net of revenue recognized during the period		4,456			2,117
Contract liability, end	$	5,454		$	4,008

Accounts Receivable, Allowance for Credit Loss [Table Text Block]

	Six Months Ended June 30,
	2025			2024
	(in thousands)
Allowance for credit losses, beginning	$	8,086		$	6,574
Additions charged to expense		856			1,210
Other deductions		(269	)		(435	)
Allowance for credit losses, end	$	8,673		$	7,349