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Fair Value - Visa Derivative (Details) - Visa Derivative $ in Thousands | Sep. 30, 2021 USD ($) | Dec. 31, 2020 USD ($) | Sep. 27, 2019 | Jul. 05, 2018 | Jun. 28, 2018 | Dec. 31, 2017
--- | --- | --- | --- | --- | --- | ---
Class B restricted shares |  |  |  |  |  |
Fair value |  |  |  |  |  |
Conversion rate |  |  | 1.6228 | 1.6228 | 1.6483 | 1.6483
Fair Value Measurements, Recurring | Level 3 |  |  |  |  |  |
Fair value |  |  |  |  |  |
Derivative Liability | $ 900 | $ 4,600 |  |  |  |
Included in other liabilities | Derivatives Not Designated as Hedging Instruments |  |  |  |  |  |
Fair value |  |  |  |  |  |
Derivative Liability | $ 852 | $ 4,554 |  |  |  |

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