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PENSION AND OTHER POSTRETIREMENT PLANS - Benefits Expected to be Paid (Details)
$ in Thousands
Dec. 31, 2020
USD ($)
Estimated future Pension Plan and SERP payments  
2021 $ 1,093
2022 1,180
2023 1,315
2024 1,318
2025 1,395
2026-2030 $ 10,228