Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating Activities:
Net Margin including Non-controlling interest	$ 2,738	$ 2,835
Adjustments to reconcile net margin to net cash provided by operating activities:
Depreciation and amortization	17,287	17,676
Other non-cash charges	4,029	4,129
Change in current assets	(2,330)	36,986
Change in deferred energy	(41,871)	(15,940)
Change in current liabilities	(14,682)	2,981
Change in regulatory assets and liabilities	75,479	10,594
Change in deferred charges and other assets and deferred credits and other liabilities	(19,258)	(3,167)
Net Cash Provided by Operating Activities	21,392	56,094
Investing Activities:
Purchases of held to maturity securities	(5,562)
Increase in other investments	(776)	(3,392)
Electric plant additions	(7,789)	(6,758)
Net Cash Used for Investing Activities	(14,127)	(10,150)
Financing Activities:
Net Change in Cash and Cash Equivalents	7,265	45,944
Cash and Cash Equivalents - Beginning of Period	107,852	9,288
Cash and Cash Equivalents - End of Period	$ 115,117	$ 55,232