Stockholders' equity - Schedule of warrants or rights (Detail) |
3 Months Ended |
---|---|
Sep. 30, 2020
$ / shares
shares
| |
Equity [Abstract] | |
Outstanding, beginning of period | shares | 145,421 |
Granted | shares | 0 |
Exercised | shares | 0 |
Cashless exercise | shares | (38,326) |
Outstanding, ending of period | shares | 107,095 |
Exercise price of class of warrants or rights outstanding | $ / shares | $ 29.48 |
Granted | $ / shares | 0 |
Exercised | $ / shares | 0 |
Cashless exercise | $ / shares | 82.50 |
Exercise price of class of warrants or rights outstanding and excercisable | $ / shares | $ 10.50 |