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Segment Information - Schedule of Capital Expenditures and Identifiable Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Segment Reporting Information [Line Items]
Capital Expenditures	$ 124,239	$ 175,528
Identifiable Assets	3,765,288		$ 3,652,082
Operating Segments | Electric
Segment Reporting Information [Line Items]
Capital Expenditures	114,038	145,201
Identifiable Assets	2,914,414		2,785,522
Operating Segments | Manufacturing
Segment Reporting Information [Line Items]
Capital Expenditures	4,674	15,708
Identifiable Assets	247,556		254,445
Operating Segments | Plastics
Segment Reporting Information [Line Items]
Capital Expenditures	4,915	14,550
Identifiable Assets	221,253		186,043
Corporate
Segment Reporting Information [Line Items]
Capital Expenditures	612	$ 69
Identifiable Assets	$ 382,065		$ 426,072

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