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FAIR VALUE MEASUREMENTS (Tables)
 12 Months Ended
Dec. 31, 2022
FAIR VALUE MEASUREMENTS [Abstract]  
Fair Value of Investments
The significant unobservable input used to determine the fair value of investments carried at fair value or measurement alternative under the market adjusted option pricing model backsolve is as follows:

Unobservable input(1)
  
Weighted average(2)
  
Range
Market adjustment
    
(20%)

(90%) to 7%

 
(1)
 Significant increase (decrease) in the input would result in a significantly higher (lower) fair value measurement, depending on the materiality of the investment.
 
(2)
Input was weighted based on the fair value of the investments included in the range.
Fair Values of Assets and Liabilities
Assets and liabilities measured or reported at fair value on a recurring basis are summarized below:

 
As of December 31, 2021
  
   
Quoted prices in
active markets for
identical assets
(Level 1)
$
    
Significant other
observable inputs
(Level 2)
$
    
Unobservable
inputs
(Level 3)
$
    
Total
$
  
                         
Held to maturity investments
    
937,741
      
–
      
450
      
938,191
  
Available-for-sale investments
    
185,929
      
–
      
34,376
      
220,305
  
Equity securities
    
13,184
      
–
      
–
      
13,184
  
Investments carried at fair value     –       –       178,298       178,298  
Other assets     –       –       11,711       11,711  
Derivative assets(1)     –       694       –       694  
Share appreciation rights
    
(15,401
)
    
–
      
–
      
(15,401
)
      1,121,453       694       224,835       1,346,982  


 
As of December 31, 2022
  
   
Quoted prices in
active markets for
identical assets
(Level 1)
$
    
Significant other
observable inputs
(Level 2)
$
    
Unobservable
inputs
(Level 3)
$
    
Total
$
  
                         
Held to maturity investments
     621,346       –       490       621,836  
Available-for-sale investments
     562,051       –       35,126       597,177  
Equity securities
     2,008       548       –       2,556  
Investments carried at fair value
     –       –       178,233       178,233  
Other assets     –       –       9,668       9,668  
Derivative assets(1)     –       3       –       3  
Derivative liabilities(2)     –       (2,277 )     –       (2,277 )
Share appreciation rights
     (5,420 )     –       –       (5,420 )
2023 Convertible Notes     –       –       (82,666 )     (82,666 )
2024 Convertible Notes     –       –       (190,646 )     (190,646 )
2025 Convertible Notes     –       –       (1,148,639 )     (1,148,639 )
2026 Convertible Notes     –       –       (1,454,421 )     (1,454,421 )
      1,179,985       (1,726 )     (2,652,855 )     (1,474,596 )

 
(1)
 Included in prepaid expenses and other assets in the consolidated balance sheets and not designated as hedges.
 
(2)
 Included in accrued expenses and other payables in the consolidated balance sheets and not designated as hedges.
Reconciliations of Assets and Liabilities Categorized within Level 3
Reconciliations of assets and liabilities measured at fair value on a recurring basis and are categorized within Level 3 of the fair value hierarchy are as follows:

 
   $
 
         
Available-for-sale investments
        
Balance as of January 1, 2020
    
128,418
  
Additions
    
20,429
  
Conversion into ordinary shares of investees     (72,000 )
Net investment loss included in earnings
    
(51,000
)
Net unrealized loss included in other comprehensive income
    
(4,490
)
Balance as of December 31, 2020
    
21,357
  
Additions
    
35,298
  
Conversion into ordinary shares of investees
    
(21,340
)
Net unrealized loss included in other comprehensive income
    
(958
)
Translation gain included in other comprehensive income
    
19
  
Balance as of December 31, 2021
    
34,376
  
Additions
    
3,198
  
Settlement     (1,266 )
Net unrealized loss included in other comprehensive income
    
(1,193
)
Translation gain included in other comprehensive income
    
11
  
Balance as of December 31, 2022
    
35,126
  

Investments carried at fair value
      
Balance as of January 1, 2020 and January 1, 2021
    
–
  
Additions
    
151,227
  
Net investment gain included in earnings
    
27,071
  
Balance as at December 31, 2021
    
178,298
  
Additions     74,482  
Net investment loss included in earnings     (74,547 )
Balance as of December 31, 2022     178,233  

   
$
 
         
Other assets
        
Balance as of January 1, 2020
    
–
  
Acquisition of subsidiaries
    
8,860
  
Additions
    
13,340
  
Disposals
    
(363
)
Write-down included in earnings
    
(3,713
)
Translation gain included in other comprehensive income
    
900
  
Balance as of December 31, 2020
    
19,024
  
Additions
    
186
  
Disposals
    
(3,513
)
Write-down included in earnings
    
(3,627
)
Translation loss included in other comprehensive income
    
(359
)
Balance as of December 31, 2021
    
11,711
  
Additions     56  
Disposals     (679 )
Write-down included in earnings     (476 )
Translation loss included in other comprehensive income     (944 )
Balance as of December 31, 2022     9,668