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Additional Information: Condensed Financial Statements of the Company (Details) - Schedule of Condensed Statements of Comprehensive Income/(Loss) of the Parent Company - Parent [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Condensed Statement of Income Captions [Line Items]      
Operating expenses $ (4,289) $ (10,399) $ (50,638)
Loss before income tax (4,472) (10,266) (50,925)
Loss from subsidiaries and former VIEs (15,381) (35,775) (12,490)
Net loss $ (19,853) $ (46,041) $ (63,415)