SEGMENTS - Narrative (Details) $ in Thousands	9 Months Ended
Sep. 30, 2023 USD ($) segment	Sep. 30, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments \| segment	3
Capital expenditures	$ 393	$ 1,090
Marketers \| Revenue Benchmark \| Top Five Marketers
Segment Reporting Information [Line Items]
Concentration risk	19.00%	21.00%
Marketers \| Accounts Receivable \| Top Five Marketers
Segment Reporting Information [Line Items]
Concentration risk	23.00%	13.00%
Supplier Concentration Risk \| Financial Institution Partner \| Largest FI Partner
Segment Reporting Information [Line Items]
Concentration risk		85.00%
United Kingdom
Segment Reporting Information [Line Items]
Capital expenditures	$ 100	$ 200

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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