EQUITY - Additional Information (Details) (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Nov. 06, 2017	Jul. 25, 2017	Dec. 31, 2017
Class of Warrant or Right [Line Items]
Issuance of common stock as merger consideration (in shares)	3,423,367
Issuance of common stock as merger consideration	$ 23,300		$ 23,279
Public Offering
Class of Warrant or Right [Line Items]
Issuance of common stock in relation to public offering, net of offering costs incurred (in shares)		9,583,332
Public offering price (in usd per share)		$ 4.50
Gross proceeds		$ 43,100
Underwriting
Class of Warrant or Right [Line Items]
Options to purchase additional shares (in shares)		1,249,999