COMMON STOCK (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jan. 03, 2020
Class of Stock [Line Items]
Common stock, shares authorized	80,000,000	57,803,522
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, number of shares reserved	24,027,604	12,785,541
Common stock dividends	$ 0	$ 0
Subsequent Event
Class of Stock [Line Items]
Common stock, shares authorized			500,000,000
Common stock, par value (in dollars per share)			$ 0.0001
Total shares authorized			510,000,000
Preferred stock, shares authorized			10,000,000
Preferred stock, par value (in dollars per share)			$ 0.0001