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Commitments and Contingencies (Details) - USD ($) |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 12, 2018 | Aug. 31, 2020 | Dec. 31, 2020 | Sep. 30, 2021
Business Acquisition [Line Items] |  |  |  |
Payments for settlements |  |  | $ 7,300,000 |
Long-term debt |  |  | $ 165,759,000 | $ 160,434,000
Income tax carryback claims, CARES Act |  | $ 19,000,000 |  |
Promissory Note |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Settlement costs and expenses | $ 7,500,000 |  |  |
Debt instrument, face amount | $ 25,000,000 |  |  |
Long-term debt |  |  |  | $ 17,500,000

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