Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details)

v3.19.3
Stockholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Aug. 31, 2019
Apr. 30, 2019
Sep. 30, 2019
Jun. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Sale of stock              
Issuance of stock     $ 573   $ 1,128    
Proceeds from sale of common stock           $ 2,467 $ 8,459
ATM              
Sale of stock              
Issuance of stock (in shares)       329,656      
Weighted-average price       $ 1.60      
Proceeds from sale of common stock   $ 500          
ATM | Maximum [Member]              
Sale of stock              
Issuance of stock $ 4,000 $ 8,600