ACQUISITIONS - Summary of Estimated Fair Values of Consideration Paid and Net Assets Acquired (Details) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
	Mar. 31, 2024	Apr. 05, 2023	Mar. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Liabilities assumed:
Goodwill	$ 53,986		$ 53,986	$ 53,986	$ 53,986
Measurement period adjustment, goodwill			0
LAN Holdings
Assets acquired:
Cash and cash equivalents	4,721	$ 4,721	4,721	4,721
Accounts receivable	3,643	3,643	3,643	3,643
Prepaid wires	4,613	4,613	4,613	4,613
Prepaid expenses and other current assets	353	353	353	353
Property and equipment	351	351	351	351
Intangible assets	3,200	3,200	3,200	3,200
Other assets	877	877	877	877
Total identifiable assets acquired	17,758	17,758	17,758	17,758
Liabilities assumed:
Accounts payable	(1,010)	(1,010)	(1,010)	(1,010)
Wire transfers and money orders payable	(6,645)	(6,645)	(6,645)	(6,645)
Accrued and other liabilities	(1,436)	(747)	(1,436)	(1,436)
Measurement period adjustments, accrued and other liabilities				(689)
Lease liabilities	(758)	(758)	(758)	(758)
Deferred tax liability	(91)	(91)	(91)	(91)
Total liabilities assumed	(9,940)	(9,251)	(9,940)	(9,940)
Measurement Period Adjustments, Total liabilities assumed				(689)
Net identifiable assets acquired	7,818	8,507	7,818	7,818
Measurement Period Adjustments, Net identifiable assets acquired				(689)
Consideration transferred	13,354	13,354
Goodwill	$ 5,536	$ 4,847	$ 5,536	5,536
Measurement period adjustment, goodwill				$ 689