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v3.20.4

Leases - Additional Information (Details) | Dec. 31, 2020 | Mar. 31, 2020 well | Dec. 31, 2019 | Aug. 31, 2019 rig contract | Dec. 31, 2018 | Jul. 01, 2018
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Lessor, Lease, Description [Line Items] |  |  |  |  |  |
Number of rigs for which bareboat charters have been secured | rig |  |  |  | 2 |  |
Number of wells under drilling contract | well |  | 10 |  |  |  |
Number of optional wells under drilling contract | well |  | 4 |  |  |  |
Gulfdrill |  |  |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |  |  |
Number of rigs leased to others | rig |  |  |  | 3 |  |
Gulfdrill |  |  |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |  |  |
Number of drilling contracts | contract |  |  |  | 5 |  |
Gulfdrill |  |  |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |  |  |
Ownership percentage | 50.00% |  | 50.00% | 50.00% | 0.00% | 0.00%

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- Definition Number Of Optional Wells Under Drilling Contract + References No definition available. + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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