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DEBT AND OTHER FINANCING ARRANGEMENTS - Term Facility with Antara (Details) - USD ($)			6 Months Ended		12 Months Ended
	Oct. 31, 2019	Oct. 09, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Debt Instrument [Line Items]
Debt premium			$ 2,657,000	$ 311,000
Line of Credit \| 2020 Antara Term Facility \| Term Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 30,000,000.0
First draw	$ 15,000,000.0
Second draw	$ 15,000,000.0
Commitment termination fee	3.00%
Interest rate	9.75%
Repayment of line of credit, net	$ 10,100,000
Prepayment premium	5.00%
Debt issuance costs		900,000
Commitment fee		100,000			$ 1,200,000
Debt premium		$ 2,100,000