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v3.23.3

Shareholders' Equity and Share-based Compensation - Share-based Compensation (Details) - USD ($) |  | 3 Months Ended | 155 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2018 | Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense |  | $ 918,000 | $ 10,596,000 |  |
Repurchase of common shares under shares repurchase program |  |  |  |  | 7,332,780
Options outstanding, Weighted-Average Remaining Contractual Life (in years) | 8 months 19 days | 5 months 19 days |  |  |
Options vested and expected to vest (in shares) |  | 259,375 |  |  | 259,375
Options vested and expected to vest (in dollars per share) |  | $ 7.55 |  |  | $ 7.55
Options vested and expected to vest, Weighted Average Remaining Contractual Life (in years) |  | 5 months 19 days |  |  |
Options vested and expected to vest, Aggregate Intrinsic Value |  | $ 5,782,281 |  |  | $ 5,782,281
Exercisable at end of period (in shares) |  | 259,375 |  |  | 259,375
Exercisable at end of period (in dollars per share) |  | $ 7.55 |  |  | $ 7.55
Exercisable at end of period, Weighted Average Remaining Contractual Life (in years) |  | 5 months 19 days |  |  |
Exercisable at end of period, Aggregate Intrinsic Value |  | $ 5,782,281 |  |  | $ 5,782,281
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |  |  |
Outstanding at beginning of period (in shares) |  | 319,375 |  |  |
Outstanding at end of period (In shares) | 319,375 | 259,375 |  |  | 259,375
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] |  |  |  |  |
Outstanding at beginning of period (in dollars per share) |  | $ 7.53 |  |  |
Outstanding at end of period (in dollars per share) | $ 7.53 | $ 7.55 |  |  | $ 7.55
Options outstanding, Aggregate Intrinsic Value | $ 8,071,631 | $ 5,782,281 |  |  | $ 5,782,281
2018 Market-based Restricted Stock Units (MSU) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense |  | 300,000 | 600,000 |  |
Granted (in shares) |  |  |  | 1,300,000 |
Performance Based Restricted Stock Units (PRSUs) Member |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense |  | $ 400,000 | $ 1,600,000 |  |
Granted (in shares) |  | 0 |  |  |

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