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Schedule of Amortization of Patents and Trademarks (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]      
2022 $ 59    
2023 153    
2024 177    
2025 199    
2026 235    
Thereafter 1,165    
Total $ 1,988 $ 1,974 $ 1,498