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Commitments, Guarantees, Indemnifications, and Legal Proceedings - Additional Information (Details) - DeRidder, Louisiana - USD ($) | 3 Months Ended | 9 Months Ended |
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Jun. 30, 2018 | Sep. 30, 2021 | Feb. 08, 2017
Schedule Of Commitments And Contingencies [Line Items] |  |  |
Loss contingency, period of occurrence |  | February 8, 2017 |
Liability insurance |  |  | $ 1,000,000.0
Payment of penalties | $ 40,000 |  |

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- Definition Payment of penalties. + References No definition available. + Details
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