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Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Nov. 19, 2020 | Sep. 28, 2020 | Aug. 05, 2021 | Jun. 30, 2021 | Jun. 30, 2021 | May 31, 2021 | Dec. 31, 2020
Surety Bond |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |
Off-balance sheet commitments |  |  |  | $ 7.5 | $ 7.5 |  |
Revolving Credit Facility |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |
Off-balance sheet commitments |  |  |  | 6.8 | 6.8 |  |
Settled | Mirada Litigation |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |
Amount proposed to be paid under Settlement Agreement |  | $ 42.8 |  |  |  |  |
Payments for legal settlements | $ 20.0 |  |  |  |  |  |
Estimated litigation liability, current |  |  |  |  |  | $ 22.8 |
Volume Commitment Agreement -Subsequent Oil and Gas Delivery Commitment | Subsequent Event |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |
Other commitments |  |  | $ 149.6 |  |  |  |
Other commitment, duration term |  |  | 7 years |  |  |  |
Volume Commitment Agreement - Permian Basin Sale |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |
Other commitments |  |  |  |  |  |  | $ 32.6
Other commitment, deficiency fee |  |  |  | 2.4 | 2.4 |  |
Other commitment, short fall payment |  |  |  | $ 2.4 | $ 2.4 |  |

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- Definition Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.25) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 55 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=116646759&loc=d3e15243-108350 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
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- Definition Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121611286&loc=d3e11927-110247 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82919202-210446 + Details
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