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Accounts receivable, net (Tables)
 12 Months Ended
Dec. 31, 2022
Accounts receivable, net [Abstract]  
Schedule of accounts receivable net
(In thousands)   December 31,
2021  		     December 31,
2022  		  
Accounts receivable     18,273       10,480  
Less: Allowance for doubtful accounts     (3,350 )     (4,519 )
Accounts receivable, net     14,923       5,961  

 
Schedule of movement in allowance for doubtful accounts
(In thousands)     December 31,
2020  		     December 31,
2021  		     December 31,
2022  		  
Balance at beginning of the year     495       3,289       3,350  
Additions     2,785       67       1,273  
Reversal    
—
       (22 )     (26 )
Exchange difference    
—
       16       (78 )
Balance at end of the year     3,289       3,350       4,519