SHAREHOLDERS EQUITY - Common Stock (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($) item $ / shares shares	Jun. 30, 2017 USD ($) item shares	Dec. 31, 2017 $ / shares
Class of Stock [Line Items]
Common stock par value | $ / shares	$ 0		$ 0
Issuance of common stock, net of issuance costs	$ 1,909	$ 365
Common stock issuance costs	$ 7	$ 2
Common Stock
Class of Stock [Line Items]
Common stock par value | $ / shares	$ 0.00
Number of votes per each share	one
Common Stock | Private Placement
Class of Stock [Line Items]
Issuance of common stock (in shares) | shares	67,242	13,579
Number of Private Placement Memorandums | item	2	2
Issuance of common stock, net of issuance costs	$ 1,900	$ 400
Common stock issuance costs	$ 100