Quarterly report pursuant to Section 13 or 15(d)

Stockholders' equity - Summary of share-based compensation expense (Detail)

v3.20.4
Stockholders' equity - Summary of share-based compensation expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]        
Share-based compensation expense $ 82 $ 37 $ 120 $ 92
Research and development [Member]        
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]        
Share-based compensation expense 6 17 15 0
General and administrative [Member]        
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]        
Share-based compensation expense $ 76 $ 20 $ 105 $ 92