SUPPLEMENTAL OIL AND GAS DISCLOSURES (Schedule Of Principal Sources Of Changes In Standardized Measure Of Discounted Future Net Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Supplemental Oil and Gas Disclosures [Abstract]
Sales and transfers of oil and natural gas produced, net of production costs	$ (240,818)	$ (161,238)
Net changes in prices and production costs	377,923	334,291
Revisions in quantity estimates and changes in production timing	109,772	320,774
Extensions, discoveries, and improved recovery, less related costs	34,121	45,019
Changes in estimated future development costs	(1,615)	0
Previously estimated cost incurred during the period	0	0
Purchases of minerals in place	0	0
Sales of minerals in place	(28,704)	(4,161)
Accretion of discount	65,826	19,306
Net change in income taxes	(84,421)	(87,078)
Other-net	(18,203)	(88,791)
Net change	213,881	378,123
Beginning of year	571,144	193,021
End of year	$ 785,025	$ 571,144