XML 45 R33.htm IDEA: XBRL DOCUMENT v3.19.2
SUBSEQUENT EVENT (Details) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
Jul. 31, 2019
Jun. 30, 2019
Jun. 30, 2018
Mar. 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Subsequent Event [Line Items]            
Issuance of common stock in connection with at market offering, net of issuance costs   $ 101,000 $ 82,306,000 $ 1,553,000    
2018 Sales Agreement            
Subsequent Event [Line Items]            
Issuance of common stock in connection with at market offering, net of issuance costs (in shares)   108,386 9,447,026   108,386 9,447,026
Issuance of common stock in connection with at market offering, net of issuance costs   $ 101,000 $ 36,208,000   $ 101,000 $ 36,208,000
Subsequent Event | 2018 Sales Agreement            
Subsequent Event [Line Items]            
Issuance of common stock in connection with at market offering, net of issuance costs (in shares) 1,784,705          
Issuance of common stock in connection with at market offering, net of issuance costs $ 2,471,000