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RELATED PARTY TRANSACTIONS (Details) $ / shares in Units, $ in Thousands	Jan. 23, 2025 USD ($) $ / shares shares	Mar. 31, 2026 USD ($)	Mar. 31, 2025	Jan. 22, 2025	Jun. 25, 2018
Related Party Transaction [Line Items]
Tax benefits payable to continuing equity owners (as a percent)					85.00%
i3Verticals, LLC
Related Party Transaction [Line Items]
Non-controlling interest, ownership interest	70.83%	71.00%	73.40%	70.05%
Non-controlling interest, ownership interest increase	0.78%
i3Verticals, LLC
Related Party Transaction [Line Items]
Common units issued (in shares) | shares	896,763
Common unit price (in USD per share) | $ / shares	$ 23.86
Reverse unit split	0.9631
i3Verticals, LLC
Related Party Transaction [Line Items]
Capital contribution | $	$ 21,396
Class B Common Stock
Related Party Transaction [Line Items]
Stock split, conversion ratio	1
Reverse recapitalization, shares retired (in shares) | shares	369,256
Class A Common Stock
Related Party Transaction [Line Items]
Volume-weighted average price period				50 days
Stock split, conversion ratio	1
Continuing Equity Owners | i3Verticals, LLC
Related Party Transaction [Line Items]
Ownership percentage	29.17%			29.95%
Ownership percentage decrease	0.78%
Continuing Equity Owners | Class B Common Stock
Related Party Transaction [Line Items]
Tax benefits due to continuing equity owners | $		$ 32,379

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