Quarterly report pursuant to Section 13 or 15(d)

REVENUES - Disaggregation of Revenue (Details)

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REVENUES - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Disaggregation of Revenue [Line Items]    
Total revenues $ 113,297 $ 96,933
Merchant card fees    
Disaggregation of Revenue [Line Items]    
Total revenues 107,702 89,086
Outsourced services and other services    
Disaggregation of Revenue [Line Items]    
Total revenues 4,378 6,791
Equipment    
Disaggregation of Revenue [Line Items]    
Total revenues $ 1,217 $ 1,056