TBG DISCONTINUED OPERATIONS AND RESTRUCTURING - Additional Information (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2019 salon	Mar. 31, 2019 USD ($)	Jun. 30, 2020 USD ($) salon store	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Jan. 31, 2018 salon	Oct. 31, 2017 salon
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of stores | store			1,632
Number of stores transferred | salon	207
Salon lease commitments			$ 23,000
Decrease in lease commitments			18,000
Negative cash flow			(30,501)	$ 56,396	$ 61,211
TBG mall restructuring		$ 20,700	2,333	21,816	0
Cumulative foreign currency translation loss			$ 0	0	6,152
Mall-based Salons | Company-owned
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of stores | salon			166
Discontinued Operations, Disposed of by Sale | Mall-Based Salons and International Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Promissory note receivable				$ 20,700	11,700
Cumulative foreign currency translation loss					6,200
Facility Closing | Smartstyle Restructuring
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of non-performing stores | salon							597
Negative cash flow						$ 15,000
TBG mall restructuring					$ 1,900
North America | Facility Closing
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of stores | salon								858
United Kingdom | Facility Closing
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of stores | salon								250