v3.8.0.1
COMMON STOCK (Details) - USD ($)
$ in Thousands
 1 Months Ended 9 Months Ended
Sep. 30, 2017
Mar. 31, 2017
Sep. 30, 2017
Sep. 30, 2016
May 31, 2017
Issuance of common stock, net of transaction expenses $ 1,900 $ 57,200 $ 59,130 $ 0  
At the market offering common stock offering capacity         $ 40,000
Common Stock          
Issuance of common stock (shares) 500,000 50,100,000 50,612,027