Quarterly report pursuant to Section 13 or 15(d)

REVENUE FROM CONTRACTS WITH CUSTOMERS (Details)

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REVENUE FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Disaggregation of Revenue [Line Items]      
Net revenues $ 70,451,000 $ 74,097,000  
Contract assets 0   $ 0
United States      
Disaggregation of Revenue [Line Items]      
Net revenues 62,103,000 64,074,000  
All other countries      
Disaggregation of Revenue [Line Items]      
Net revenues 8,348,000 10,023,000  
Virtual currency (over time) | Over time      
Disaggregation of Revenue [Line Items]      
Net revenues 65,935,000 73,226,000  
Advertising (point in time) | Point in time      
Disaggregation of Revenue [Line Items]      
Net revenues 4,075,000 871,000  
Other revenue (point in time) | Point in time      
Disaggregation of Revenue [Line Items]      
Net revenues $ 441,000 $ 0