SEGMENTS - Revenue by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Adjusted Contribution	$ 143,035	$ 129,628	$ 82,182
Plus: FI Share and other third-party costs	155,507	137,488	104,710
Revenues	298,542	267,116	186,892
Cardlytics Direct
Segment Reporting Information [Line Items]
Adjusted Contribution	122,981	121,675	82,182
Plus: FI Share and other third-party costs	154,204	137,079	104,710
Revenues	277,185	258,754	186,892
Bridg Acquisition
Segment Reporting Information [Line Items]
Adjusted Contribution	20,054	7,953	0
Plus: FI Share and other third-party costs	1,303	409	0
Revenues	$ 21,357	$ 8,362	$ 0