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Intangibles (Estimated future amortization expense for customer relationships) (Details) - Customer relationships and other intangible assets
$ in Thousands
Dec. 31, 2021
USD ($)
Finite-Lived Intangible Assets [Line Items]  
2022 $ 21,176
2023 21,176
2024 21,176
2025 21,176
2026 21,176
Thereafter 92,532
Finite-Lived Intangible Asset, Expected Amortization $ 198,412