Discontinued Operations (Schedule Of Cash Flows From Discontinued Operations) (Details) - Pumpco [Member] - USD ($) $ in Thousands	1 Months Ended	8 Months Ended	9 Months Ended
Feb. 02, 2021	Sep. 30, 2021	Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reduction in value of assets		$ 26,905	$ 109,591
Gain on sale of assets	(43)	(15,572)	0
Depreciation, depletion, amortization and accretion	2,142	31,502	24,261
Proceeds from sales of assets	$ 486	$ 53,225	$ 14,369

Asset impairment charges, discontinued operations

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- Definition

Proceeds from sales of assets, Discontinued Operaions

+ References

No definition available.

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- Definition

Amount of deprecation and amortization expense attributable to property, plant and equipment and intangible assets of discontinued operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760

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- Definition

Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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