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Qualified Employee Benefit Plans - Future Benefit Payments to be Paid (Details) - Retirement Plan
$ in Thousands
Dec. 31, 2021
USD ($)
Expected future benefit payments [Abstract]  
2022 $ 8,817
2023 7,630
2024 7,460
2025 9,642
2026 8,787
2027 - 2031 $ 45,873