FINANCING ARRANGEMENTS - Revolving Credit Facility (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Jun. 30, 2020
Debt Instrument [Line Items]
Cash, cash equivalents and marketable securities	$ 45,500
Long-term debt	195,805	$ 186,911
Estimated proceeds from sale of salon assets	20,900
Liquidity amount	148,200
Cash, cash equivalents, and restricted cash	56,058	29,152	$ 93,476	$ 122,880
Current liabilities	182,468	198,485
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	195,805	186,911
Maximum borrowing capacity	293,300	$ 294,400
Decrease in borrowing capacity	1,100
Long-term line of credit	15,700
Unused borrowing capacity, amount	81,800
Minimum liquidity	$ 75,000