NOTE PAYABLE (Details)					3 Months Ended
	Feb. 28, 2020 USD ($)	Feb. 10, 2020 shares	Jan. 31, 2020 USD ($) M item	Jan. 28, 2020 USD ($) $ / shares shares	Apr. 30, 2020 USD ($) shares		May 22, 2020 $ / shares shares	May 18, 2020 USD ($)
NOTE PAYABLE
Discount and issuance costs on notes payable			$ 522,000		$ 174,000
Common Stock
NOTE PAYABLE
Issuance of common stock upon exercise of warrants (in shares) | shares		183,361		183,361	183,361	[1]
Bridge Warrants
NOTE PAYABLE
Number of shares of common stock subject to warrants (in shares) | shares				187,944			413,751
Warrants exercise price (in dollars per share) | $ / shares				$ 0.12			$ 2.2362
Fair value of warrants			$ 460,000
Bridge Warrants | Black-Scholes pricing model | Risk-free interest rate
NOTE PAYABLE
Warrants, measurement input | item			0.0144
Bridge Warrants | Black-Scholes pricing model | Contractual term
NOTE PAYABLE
Warrants, measurement input | M			30
Bridge Warrants | Black-Scholes pricing model | Expected volatility
NOTE PAYABLE
Warrants, measurement input | item			0.703
Bridge Warrants | Black-Scholes pricing model | Dividend rate
NOTE PAYABLE
Warrants, measurement input | item			0.00
Bridge Loan
NOTE PAYABLE
Face amount of loan				$ 2,250,000	$ 2,250,000
Discount on notes payable					250,000
interest rate (as a percent)				12.00%
Proceeds from loan					1,250,000
Discount and issuance costs on notes payable			$ 522,000
Interest expense from debt					$ 388,000
Bridge Loan | Tranche one
NOTE PAYABLE
Loan amount, net of discount				$ 625,000
Gross amount of loan				700,000
Discount on notes payable				$ 75,000
Proceeds from loan			$ 625,000
Bridge Loan | Tranche two
NOTE PAYABLE
Loan amount, net of discount	$ 625,000
Gross amount of loan	700,000
Discount on notes payable	75,000
Proceeds from loan	$ 625,000
Bridge Loan | Tranche three
NOTE PAYABLE
Loan amount, net of discount								$ 1,000,000
Gross amount of loan								1,100,000
Discount on notes payable								$ 100,000

[1] Note: Share amounts presented above have been adjusted to reflect the impact of a 1-for-12 reverse stock split effected in May 2020 as discussed in Note 1.