GOODWILL AND INTANGIBLE ASSETS, NET - Schedule of Intangible Assets, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Intangible Assets, Net [Abstract]
Gross Fair Value	$ 301,244	$ 301,244
Accumulated Amortization	(263,671)	(236,177)
Total	37,573	65,067
Merchant/Network affiliate relationships
Intangible Assets, Net [Abstract]
Gross Fair Value	146,547	146,547
Accumulated Amortization	(124,833)	(108,558)
Total	21,714	37,989
Technology
Intangible Assets, Net [Abstract]
Gross Fair Value	74,193	74,193
Accumulated Amortization	(60,803)	(55,039)
Total	13,390	19,154
Publisher relationships
Intangible Assets, Net [Abstract]
Gross Fair Value	42,934	42,934
Accumulated Amortization	(41,144)	(35,778)
Total	1,790	7,156
Tradenames
Intangible Assets, Net [Abstract]
Gross Fair Value	24,097	24,097
Accumulated Amortization	(24,097)	(24,097)
Total	0	0
Customer relationship
Intangible Assets, Net [Abstract]
Gross Fair Value	13,473	13,473
Accumulated Amortization	(12,794)	(12,705)
Total	$ 679	$ 768