Fair Value of Financial Instruments (Details-3)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Basis adjustment:
Basis adjustment - on peak	92.10%	94.10%
Basis adjustment - off peak	90.00%	92.40%
US Treasury Bills [Member]
Deferred compensation plan [Abstract]
Investment interest calculation, investment maturity period (26 weeks)	182 days
Investment interest calculation, monthly compounding rate	1.00%
Investment interest calculation, minimum annual rate compounded monthly	7.00%
Minimum [Member]
Counterparty fuel mix:
Internal generation	41.00%	41.00%
Purchased power	34.00%	34.00%
Maximum [Member]
Counterparty fuel mix:
Internal generation	66.00%	66.00%
Purchased power	59.00%	59.00%
Weighted Average [Member]
Counterparty fuel mix:
Internal generation	49.50%	56.60%
Purchased power	50.50%	43.40%