COMMON STOCK (Details) - USD ($)							1 Months Ended		3 Months Ended		6 Months Ended
	May 21, 2020	Apr. 28, 2020	Apr. 13, 2020	Aug. 06, 2019	Jun. 06, 2019	May 30, 2019	Jul. 31, 2020	May 31, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Period for financing from common stock		24 months
Common stock outstanding after the effect of reverse stock spilt conversion									6,664,815		6,664,815		3,339,380
Loan proceeds									$ 19,500,000		$ 19,500,000
Common stock, par value									$ 0.001		$ 0.001		$ 0.001
Proceeds from common stock											$ 6,291,000	$ 1,154,000
Common Stock
Number of common stock issued									1,902,182	164,058		221,263
Cantor Fitzgerald & Co | ATM Offering Agreement
Number of common stock issued									1,959,422
Proceeds from common stock									$ 10,200,000
Stock Purchase Agreement | Lincoln Park
Maximum aggregate offering price		$ 8,000,000
Number of common stock issued	156,250					104,294
Aggregate gross proceeds from common shares and warrants						$ 550,751
Number of warrants issued for common stock	250,000					182,515
Warrant purchase price per share	$ 1.2989					$ 5.062
PA | Lincoln Park
Maximum aggregate offering price	$ 12,000,000	$ 12,000,000		$ 3,200,000	$ 10,000,000
Period for financing from common stock	24 months				24 months
Number of common stock issued								3,200,000	623,236		192,471
Proceeds from common stock								$ 7,700,000	$ 593,356		$ 250,000
PA | Lincoln Park | Subsequent Event
Number of common stock issued							1,100,000
Proceeds from common stock							$ 2,300,000
Controlled Equity Offering Sales Agreement | Cantor Fitzgerald & Co | ATM Offering Agreement
Net proceeds from direct offering			$ 3,100,000
Number of common stock issued									930,225
Proceeds from common stock									$ 3,000,000
Controlled Equity Offering Sales Agreement | Cantor Fitzgerald & Co | Maximum | ATM Offering Agreement
Sales commission percentage											2.50%
Registration Rights Agreement | Lincoln Park
Number of common stock issued	1,971,000