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GOODWILL - Additional Schedule of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Goodwill [Roll Forward]
Goodwill, net at beginning of period	$ 286,304	$ 345,718	$ 345,718
Translation rate adjustments			(1,131)
Derecognition related to sale of salon assets to franchisees			(76,966)
Goodwill impairment	$ (40,164)	(40,164)	(40,164)	$ 0	$ 0
Goodwill, net at end of period			227,457	345,718
Franchise
Goodwill [Roll Forward]
Goodwill, net at beginning of period		227,928	227,928
Translation rate adjustments			(471)
Derecognition related to sale of salon assets to franchisees			0
Goodwill impairment			0
Goodwill, net at end of period			227,457	227,928
Company-owned
Goodwill [Roll Forward]
Goodwill, net at beginning of period		$ 117,790	117,790
Translation rate adjustments			(660)
Derecognition related to sale of salon assets to franchisees			(76,966)
Goodwill impairment			(40,164)
Goodwill, net at end of period			$ 0	$ 117,790