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Employee Benefit Plans - Estimated Future Benefit Payments (Details)
$ in Thousands
Dec. 31, 2020
USD ($)
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2021 $ 38,941
2022 35,804
2023 37,877
2024 39,655
2025 40,888
2026 - 2030 $ 216,678