Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Amount of increase in the fair value of derivatives recognized in the income statement.

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Amount of decrease in the fair value of derivatives recognized in the income statement.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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Derivative Instruments - Realized and unrealized gains (losses) on derivative instruments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Gains and (losses) on derivative instruments
Net unrealized gains on derivative instruments			$ 49,235		$ 131,804
Natural gas swaps
Gains and (losses) on derivative instruments
Gains	$ 5	$ 42,563	140	$ 50,641
Losses	(7,207)	(203)	(16,604)	(282)
Total	$ (7,202)	$ 42,360	(16,464)	$ 50,359
Natural gas swaps \| Regulatory liability
Gains and (losses) on derivative instruments
Net unrealized gains on derivative instruments			$ 49,235		$ 131,804