Derivative and Hedging Instruments (Details-3) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Commodity Derivative Contracts [Member]
Offsetting Liabilities [Line Items]
Gross amounts	$ 849	$ 632
Gross amounts offset in balance sheet	(849)	(632)
Collateral posted against derivative positions	0	0
Net amount presented in the balance sheet	0	0
Financial Transmission Rights [Member]
Offsetting Liabilities [Line Items]
Gross amounts		23
Gross amounts offset in balance sheet		0
Collateral posted against derivative positions		0
Net amount presented in the balance sheet		23
Purchased Power Agreement [Member]
Offsetting Liabilities [Line Items]
Gross amounts	2,140	14,140
Gross amounts offset in balance sheet		0
Collateral posted against derivative positions	0	0
Net amount presented in the balance sheet	$ 2,140	$ 14,140

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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