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CONTRACT LIABILITIES (Tables)
9 Months Ended
Sep. 30, 2020
CONTRACT LIABILITIES [Abstract]  
Summary of Net Changes in Contract Liabilities
A summary of the net changes in contract liabilities activity for the nine months ended September 30, 2020 and 2019 is presented below:

 
As of September 30,
 
2020
 
2019
Beginning balance as January 1,
$
26,823
 
$
442,630
Issued
 
33,221
  
50,778
Redeemed
 
(39,405)
  
(57,319)
Breakage recognized
 
(341)
  
(1,563)
Fulfillment of contract
 
(898)
  
(260,198)
Ending balance as of September 30,
$
19,400
 
$
174,328