Discontinued Operations (Schedule Of Operations And Other Items Reclassified In Discontinued Operations) (Details) - USD ($) $ in Thousands	1 Months Ended	8 Months Ended	9 Months Ended
	Feb. 08, 2018	Sep. 30, 2018	Sep. 30, 2019
Operating expenses
Interest expense		$ 0	$ 0
Predecessor
Operating expenses
Interest expense	$ (103)
Predecessor | Weeks Island Field, Louisiana | Non Stack Assets | Disposed of by Sale
Revenue
Oil	1,617
Natural gas	1,023
Natural gas liquids	236
Other	16
Operating revenue	2,892
Loss on sale of assets	(1,923)
Total revenue	969
Operating expenses
Lease operating	1,770
Transportation and marketing	83
Production taxes	167
Workovers	127
Depreciation, depletion and amortization	884
Impairment of assets	5,560
General and administrative	21
Total operating expenses	8,612
Interest expense	(103)
Loss from discontinued operations, net of tax	$ (7,746)