NATURE OF OPERATIONS, BASIS OF PRESENTATION AND RECENT ACCOUNTING PRONOUNCEMENTS - Reverse Stock Split (Details) $ / shares in Units, $ in Thousands			6 Months Ended
Feb. 11, 2020	Apr. 16, 2018	Jun. 30, 2020 USD ($) $ / shares	Dec. 31, 2019 USD ($) $ / shares
NATURE OF OPERATIONS AND GOING CONCERN, BASIS OF PRESENTATION AND RECENT ACCOUNTING PRONOUNCEMENTS
Cash and cash equivalents \| $			$ 9,825	$ 6,602
Common stock, par value (in dollars per share) \| $ / shares			$ 0.00001	$ 0.00001
Reverse stock split ratio	0.0333	0.04
Going concern			true

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Indicates (true false) whether there was substantial doubt about ability to continue as going concern within one year after date financial statements are issued.

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