ACQUISITIONS - Schedule of Business Acquisitions, by Acquisition (Details) $ in Thousands		3 Months Ended		12 Months Ended
	Dec. 19, 2024 USD ($) franchisee numberOfTradingDays shares	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)
Business Combination [Line Items]
Gain on earn-out liability		$ 1,000	$ 0
Alline Salon Group
Business Combination [Line Items]
Business acquisitions, net of cash acquired	$ 18,621
Equity instruments	3,000
Contingent consideration arrangement (preliminary estimate)	1,000			$ 1,000
Business Combination, Consideration Transferred, Total	22,621
Cash transferred, gross	20,000
Cash acquired	$ 1,400
Equity interest issued or issuable (in shares) | shares	140,552
Threshold trading days | numberOfTradingDays	30
Subsequent annual earnout period | franchisee	3
Contingent consideration arrangement, range of outcomes, value, low	$ 0
Contingent consideration arrangement, range of outcomes, value, high	$ 3,000