Quarterly report pursuant to Section 13 or 15(d)

Organization and Nature of Operations - Additional Information (Details)

v3.20.2
Organization and Nature of Operations - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 6 Months Ended 12 Months Ended
Aug. 31, 2020
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Line Items]        
Accumulated deficit   $ 134,979   $ 117,157
Net cash used in operating activities   12,843 $ 15,747 33,200
Cash and cash equivalents   $ 29,380   $ 14,584
Common stock, par value   $ 0.0001   $ 0.0001
Common stock, shares authorized   300,000,000   300,000,000
Preferred stock, par value   $ 0.0001   $ 0.0001
Preferred stock, shares authorized   10,000,000   10,000,000
August 2020 Offering [Member] | Forecast [Member]        
Organization Consolidation And Presentation Of Financial Statements [Line Items]        
Common stock, shares authorized 34,285,714      
Proceeds from issuance of common stock $ 10,600