Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating Activities:
Net Margin including Non-controlling interest	$ 6,247	$ 6,572
Adjustments to reconcile net margin to net cash provided by operating activities:
Depreciation and amortization	35,016	34,665
Other non-cash charges	8,443	8,748
Change in current assets	(15,565)	(16,828)
Change in deferred energy	23,363	47,692
Change in current liabilities	38,838	(101,679)
Change in regulatory assets and liabilities	44,254	(74,358)
Change in deferred charges and other assets and deferred credits and other liabilities	(12,749)	36,513
Net Cash Provided by (Used for) Operating Activities	127,847	(58,675)
Investing Activities:
Purchases of available for sale securities	(15,000)
Proceeds from sale of available for sale securities	15,000
Increase in other investments	(13,568)	(2,534)
Electric plant additions	(30,794)	(26,058)
Net Cash Used for Investing Activities	(44,362)	(28,592)
Financing Activities:
Draws on revolving credit facility	104,500	318,000
Repayments on revolving credit facility	(195,500)	(235,000)
Net Cash (Used for) Provided by Financing Activities	(91,000)	83,000
Net Change in Cash and Cash Equivalents	(7,515)	(4,267)
Cash and Cash Equivalents - Beginning of Period	31,284	15,213
Cash and Cash Equivalents - End of Period	$ 23,769	$ 10,946