Divestitures (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended
Mar. 08, 2022	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Gain (loss) on Disposition of Assets		$ 2,175	$ 472
Contract Drilling
Segment Reporting Information [Line Items]
Proceeds from Sale of Other Assets	$ 4,100
Proceeds from non-core oil and natural gas asset sales, net of related expenses		500	1,700
Drilling
Segment Reporting Information [Line Items]
Proceeds from non-core oil and natural gas asset sales, net of related expenses		2,200	2,000
Gain (loss) on Disposition of Assets		$ 2,100	$ 600

Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585

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Amount of cash inflow from the sale of other assets as part of operating activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585

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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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