REVENUES - Revenues from Contract with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 169,150	$ 136,935	$ 314,514	$ 251,600
Wire transfer and money order fees, net
Disaggregation of Revenue [Line Items]
Wire transfer and money order fees	145,252	118,788	270,259	217,191
Discounts and promotions	(734)	(1,166)	(1,291)	(1,570)
Revenues	144,518	117,622	268,968	215,621
Foreign exchange gain, net
Disaggregation of Revenue [Line Items]
Revenues	22,382	18,195	41,550	33,868
Other income
Disaggregation of Revenue [Line Items]
Revenues	$ 2,250	$ 1,118	$ 3,996	$ 2,111