DEBT AND OTHER FINANCING ARRANGEMENTS - Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total interest expense	$ 596		$ 833	$ 3,881	$ 1,298
Line of Credit | 2020 Antara Term Facility | Term Facility
Debt Instrument [Line Items]
Total interest expense	0	$ 2,800	379	2,779	379
Line of Credit | 2021 JPMorgan Credit Facility
Debt Instrument [Line Items]
Total interest expense	303		0	475	0
Line of Credit | 2018 JPMorgan Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Total interest expense	0		226	0	303
Line of Credit | 2018 JPMorgan Term Loan | Term Facility
Debt Instrument [Line Items]
Total interest expense	0		0	0	160
PPP and other loans
Debt Instrument [Line Items]
Total interest expense	$ 293		$ 228	$ 627	$ 456