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Intangible Assets, Net (Estimated Amortization Expenses for Future Periods) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
INTANGIBLE ASSETS, NET [Abstract]    
2022 $ 4,357  
2023 3,761  
2024 1,018  
2025 0  
2026 0  
Thereafter 0  
Total expected amortization expense $ 9,136 $ 4,842