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Benefit Plans - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2020 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Requisite service period |  | 30 days |  |  |  |
Employer matching contribution, percent of match (in percent) |  | 6.00% |  |  |  |
Employers matching contribution, vesting (in percent) |  | 100.00% |  |  |  |
Defined contribution plan, maximum annual contributions per employee, amount |  | $ 130 |  |  |  |
Total plan contributions |  | $ 7,500 | $ 5,200 | $ 3,100 |  |
Period with five consecutive years of highest average compensation (in years) |  | 10 years |  |  |  |
Defined benefit plan, benefit Obligation, period increase (decrease) |  |  |  | (6,000) |  |
Gain on curtailment of pension obligation |  | $ 0 | $ 0 | 2,032 |  |
Defined benefit plan, actuarial gain |  |  |  | $ 4,000 |  |
Defined benefit plan assumptions used calculating benefit obligation change in discount rate (in percent) | 23.00% |  |  |  |  |
Rate of compensation increase (in percent) |  |  |  |  | 3.00% |
Fair value assumptions, expected term (in years) |  | 10 years |  |  |  |
Wyoming Refining plan |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Discount rate (in percent) |  | 4.95% | 5.15% | 2.85% | 3.25% | 2.65%
Rate of compensation increase (in percent) |  | 0.00% | 0.00% | 0.00% |  |
Expected future employer contributions, next fiscal year |  | $ 500 |  |  |  |
U.S. Oil plan |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Discount rate (in percent) |  | 4.80% | 5.00% | 2.70% |  |
Rate of compensation increase (in percent) |  | 3.00% | 3.00% | 3.00% |  |
Expected future employer contributions, next fiscal year |  | $ 0 |  |  |  |

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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