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SUBSEQUENT EVENT (Details) - USD ($)
 1 Months Ended 12 Months Ended
Jan. 31, 2018
Dec. 31, 2017
Dec. 31, 2017
Subsequent Event [Line Items]      
Issuance of common stock in connection with at market offering, net of issuance costs (in shares)   614,230  
Net cash proceeds from issuance of common stock after deducting sales commissions and offering costs   $ 1,060,000 $ 1,060,000
Subsequent Event      
Subsequent Event [Line Items]      
Issuance of common stock in connection with at market offering, net of issuance costs (in shares) 776,788    
Net cash proceeds from issuance of common stock after deducting sales commissions and offering costs $ 1,553,000