REVENUE - Revenues from Contract with Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Wire transfer and money order fees	$ 557,697	$ 564,337	$ 471,190
Discounts and promotions	(2,896)	(2,797)	(2,028)
Total revenues	658,649	658,735	546,805
Wire transfer and money order fees, net
Disaggregation of Revenue [Line Items]
Total revenues	554,801	561,540	469,162
Foreign exchange gain, net
Disaggregation of Revenue [Line Items]
Total revenues	88,944	87,908	72,920
Other income
Disaggregation of Revenue [Line Items]
Total revenues	$ 14,904	$ 9,287	$ 4,723