Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS' EQUITY AND RELATED PARTY TRANSACTION (Details)

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STOCKHOLDERS' EQUITY AND RELATED PARTY TRANSACTION (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Nov. 10, 2016
Oct. 07, 2016
Dec. 31, 2017
Dec. 31, 2016
Class of Warrant or Right [Line Items]        
Proceeds from issuance of common stock, net of issuance costs     $ 0 $ 4,641
Rights Offering        
Class of Warrant or Right [Line Items]        
Gross proceeds from issuance of common stock $ 5,000      
Proceeds from issuance of common stock, net of issuance costs $ 4,640      
Stock issued during period (in shares) 3,846,154      
Subscription price (in USD per share) $ 1.30      
Rights Offering, Standby Purchaser        
Class of Warrant or Right [Line Items]        
Stock issued during period (in shares)   1,000,000