Annual report pursuant to Section 13 and 15(d)

REVENUE FROM CONTRACTS WITH CUSTOMERS (Details)

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REVENUE FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Line Items]      
Net revenue $ 310,886,000 $ 290,309,000 $ 287,419,000
Contract assets 0 0  
United States      
Disaggregation of Revenue [Line Items]      
Net revenue 265,660,000 253,556,000 250,252,000
All other countries      
Disaggregation of Revenue [Line Items]      
Net revenue 45,226,000 36,753,000 37,167,000
Over time | Virtual currency (over time)      
Disaggregation of Revenue [Line Items]      
Net revenue 247,929,000 261,620,000 280,087,000
Point in time | Advertising (point in time)      
Disaggregation of Revenue [Line Items]      
Net revenue 58,236,000 21,839,000 6,964,000
Point in time | Other revenue (point in time)      
Disaggregation of Revenue [Line Items]      
Net revenue $ 4,721,000 $ 6,850,000 $ 368,000