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Intangible Assets - Future Amortization Expenses (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization expense $ 19 $ 19 $ 56,000 $ 56,000
Future amortization expenses        
2022 18   18  
2023 75   75  
2024 75   75  
2025 75   75  
2026 75   75  
Thereafter 45   45  
Total $ 363   $ 363