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Compensation Plans - Summary of Deferred Compensation Expense Recognition (Details) - Restricted Stock Units (RSUs) | Dec. 31, 2018 USD ($)
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Expense recognition of deferred compensation |
2019 | $ 7,135,131
2020 | 5,671,192
2021 | 4,358,633
2022 | 3,371,500
2023 | 1,129,611
Thereafter | 341,987
Total | $ 22,008,054

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