Organization and Nature of Operations - Schedule of Financial Information of VIEs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Jan. 01, 2021
Current assets:        
Cash and cash equivalents $ 45,673 $ 285,668    
Short-term investments 382,039 469,636    
Accounts receivable, net [1] 32,803 32,619    
Prepayments and other current assets 7,326 8,801    
Held-for-sale assets 17,004 0    
Total current assets 485,479 797,686    
Non-current assets:        
Property and equipment, net 12,946 19,194    
Long-term investments 94,159 53,925    
Operating lease right-of-use assets 2,344 7,436   $ 6,500
Intangible assets 2,727 6,697    
Other non-current assets 2,888 3,919    
Total non-current assets 315,236 147,313    
Total assets 800,715 944,999    
Current liabilities:        
Accounts payable 10,103 5,309    
Advances from customers 8,352 9,068    
Taxes payable 1,867 2,435    
Current operating lease liabilities 1,932 3,957    
Total current liabilities 71,653 73,803    
Non-current liabilities:        
Long term payable 55 495    
Long-term operating lease liabilities 340 3,452    
Deferred tax liabilities 407 988    
Total non-current liabilities 802 4,935    
Total liabilities 72,455 78,738    
Income Statement [Abstract]        
Total revenues 160,670 167,982 $ 133,564  
Net (loss) income (120,380) (72,355) (3,115)  
Statement of Cash Flows [Abstract]        
Net cash and cash equivalents generated from operating activities (52,380) (20,000) 6,564  
Net cash and cash equivalents used in investing activities (144,062) (57,690) (535,052)  
Third-party Revenues        
Income Statement [Abstract]        
Total revenues 85,686 114,617 115,254  
VIE        
Current assets:        
Cash and cash equivalents 2,135 2,786    
Short-term investments 10,359 7,547    
Accounts receivable, net 21,739 24,625    
Amounts due from related parties 2,338 10,109    
Prepayments and other current assets 424 1,259    
Held-for-sale assets [2] 82      
Total current assets 37,077 46,326    
Non-current assets:        
Property and equipment, net 4,025 7,639    
Long-term investments 8,500 16,919    
Operating lease right-of-use assets 442 766    
Intangible assets 151 231    
Other non-current assets 2,048 312    
Total non-current assets 15,166 25,867    
Total assets 52,243 72,193    
Current liabilities:        
Accounts payable 8,129 3,751    
Amounts due to a related party (Note 21) 54,210 44,394    
Advances from customers 2,348 1,491    
Taxes payable 336 241    
Current operating lease liabilities 294 459    
Accrued expenses and other current liabilities 11,299 15,721    
Total current liabilities 76,616 66,057    
Non-current liabilities:        
Long term payable 19 228    
Long-term operating lease liabilities 134 305    
Deferred tax liabilities 32 43    
Total non-current liabilities 185 576    
Total liabilities 76,801 66,633    
Income Statement [Abstract]        
Net (loss) income (32,039) (5,660) 1,247  
Statement of Cash Flows [Abstract]        
Net cash and cash equivalents generated from operating activities 12,478 15,740 3,918  
Net cash and cash equivalents used in investing activities (13,057) $ (15,316) (18,865)  
Cash balance recorded in held-for-sale assets $ (72)      
VIE | Inter-company Revenues        
Income Statement [Abstract]        
Total revenues     $ 577  
[1] The allowance for current expected credit losses reflects the Company’s estimated probable incurred losses upon adoption of ASC 326. See Note 2(j) for the Company’s CECL policy.
[2] Held-for-sale assets was related to Zhonghuan Chuanyin, which was disposed subsequently in connection with the Group’s selling its customer engagement cloud business of Easemob to a third party (Note 15).