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Other Intangible Assets - Estimated Amortization Expense For Intangibles Subject To Amortization (Details)
$ in Thousands
Sep. 30, 2021
USD ($)
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
October 1 to December 31, 2021 $ 1,105
2022 4,416
2023 3,420
2024 2,286
2025 2,286
2026 2,270
Thereafter $ 1,256