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Stock-Based Compensation - Additional Information (Details) $ in Thousands | Sep. 30, 2021 USD ($) plan shares | Dec. 31, 2020 USD ($) shares
--- | --- | ---
Share-based Compensation |  |
Number of equity based compensation plan | plan | 5 |
Other accrued liabilities | $ 6,115 | $ 5,821
Cash Settled Awards |  |
Share-based Compensation |  |
Outstanding shares | shares | 32,085 | 30,009
Other accrued liabilities | $ 276 | $ 396

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