BUSINESS - Narrative (Details) - USD ($)			3 Months Ended				6 Months Ended		9 Months Ended	36 Months Ended
	Oct. 31, 2019	Oct. 09, 2019	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Apr. 30, 2021	Jun. 30, 2019
Debt Instrument [Line Items]
Net loss			$ 8,378,000	$ 11,508,000	$ 10,438,000	$ 5,288,000	$ 19,886,000	$ 15,726,000		$ 48,600,000
Cash			$ 37,505,000				37,505,000			27,464,000
Working capital surplus										3,600,000
Current maturities										11,500,000
Sales tax liability and interest										$ 16,600,000
Jpmorgan Chase Bank N.a
Debt Instrument [Line Items]
Repayment of line of credit, net	$ 10,100,000
Term Loan
Debt Instrument [Line Items]
Commitment fee		$ 100,000
Private Placement
Debt Instrument [Line Items]
Sale of stock (in shares)		3,800,000
Sale of stock (in dollars per share)		$ 5.25
Offering proceeds, gross		$ 19,950,000
Cash placement fee		1,200,000
Commitment Letter | Term Loan
Debt Instrument [Line Items]
Maximum borrowing capacity		30,000,000
Commitment fee		1,200,000
Cash placement fee		$ 750,000
First draw	$ 15,000,000
Interest rate	9.75%
Forecast | Commitment Letter | Subsequent Event | Term Loan
Debt Instrument [Line Items]
Second draw									$ 15,000,000
Adjustments
Debt Instrument [Line Items]
Net loss					$ 200,000		$ 1,300,000