GOODWILL AND INTANGIBLE ASSETS, NET - Intangible Assets, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Intangible Assets, Net [Abstract]
Gross Fair Value	$ 301,544	$ 301,244
Accumulated Amortization	(287,619)	(236,177)
Total	13,925	65,067
Merchant/Network affiliate relationships
Intangible Assets, Net [Abstract]
Gross Fair Value	146,547	146,547
Accumulated Amortization	(141,119)	(108,558)
Total	5,428	37,989
Technology
Intangible Assets, Net [Abstract]
Gross Fair Value	74,193	74,193
Accumulated Amortization	(66,549)	(55,039)
Total	7,644	19,154
Publisher relationships
Intangible Assets, Net [Abstract]
Gross Fair Value	42,934	42,934
Accumulated Amortization	(42,934)	(35,778)
Total	0	7,156
Tradenames
Intangible Assets, Net [Abstract]
Gross Fair Value	24,397	24,097
Accumulated Amortization	(24,131)	(24,097)
Total	266	0
Customer relationship
Intangible Assets, Net [Abstract]
Gross Fair Value	13,473	13,473
Accumulated Amortization	(12,886)	(12,705)
Total	$ 587	$ 768