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INCOME TAXES - Reconciliation (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
INCOME TAXES      
Net loss before provision for income taxes $ 84,545,000 $ 196,657,000 $ 166,000
PRC statutory tax rate 25.00% 25.00% 25.00%
Income tax at statutory tax rate $ 21,136,000 $ 49,164,000 $ 42,000
Impairment of goodwill   $ (35,914,000)  
Reversal of taxable deemed interest income from inter-company interest-free loans   1354.00%  
Fair value change on warrants (79.00%) 500.00%  
Non-deductible loss and SBC expenses not deductible for tax purposes $ (13,427,000) $ (13,262,000)  
Effect of income tax rate differences in jurisdictions other than the PRC $ (1,721,000) $ (437,000)  
NOL not applicable for carryforward (288.00%) (193.00%) (56.00%)
Changes in valuation allowance $ (5,339) $ (483) $ 14
Income tax benefit (expenses) $ (74,000) $ 729,000  
Effective tax rates 0.00% 0.38%