Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Name:	us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

D. DISCONTINUED OPERATIONS (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Aug. 31, 2020
Receivables [Abstract]
Gain from Sale of Oil and Gas Operation					$ 85
Gain on Loss of Liability					$ 2,138
Gain (loss) from discontinued operations		$ (170)	$ (2,412)	$ (219)
Write Down of Value of Oil and Gas Operation	$ 2,285