BUSINESS DESCRIPTION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Advertising, Interest Income and Other, Income Taxes and Foreign Currency Translation (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2021	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Advertising Expense
Advertising fund contributions from franchisees		$ 31,747	$ 32,573	$ 22,023
Advertising fund contributions from company-owned salons		105	154	897
Corporate funded advertising costs		264	671	7,015
Total advertising costs		32,116	33,398	29,935
Advertising funds, assets		11,100	10,500
Advertising funds, liabilities		11,100	10,500
Interest and Other Income [Abstract]
Gain from disposal of distribution center assets	$ 15,000	0	0	14,997
Income Taxes
Deferred tax assets, valuation allowance		202,185	201,731
Valuation allowance			4,100
Foreign Currency Translation
Foreign currency gain (loss)		$ (300)	$ (600)	$ 300