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Goodwill and Intangible Assets (Schedule of future amortization expense for amortizable intangible assets) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Goodwill and Intangible Assets      
2022 $ 72    
2023 88    
2024 79    
2025 60    
2026 29    
Thereafter 78    
Total $ 406 $ 433 $ 199