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v3.20.2

Shareholders’ Equity - Issuances/Repurchases (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2020 USD ($) vesting_installment shares | Sep. 30, 2019 USD ($) shares | Sep. 30, 2018 USD ($) shares | Sep. 30, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
General and administrative expense | $ | $ 26,514 | $ 28,706 | $ 27,149 |
Compensation and benefits expense | $ | $ 131,095 | $ 130,619 | $ 122,916 |
Class A common shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares granted (in shares) | 93,700 | 77,900 | 65,000 |
Managing Director | Class A common shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares granted (in shares) | 3,000 | 2,500 | 2,500 |
2016 Plan | Class A common shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of installments | vesting_installment | 5 |  |  |
General and administrative expense | $ | $ 564 | $ 784 | $ 864 |
Adjustment related to tax withholding for share based compensation | $ | 523 | 827 | 987 |
2016 Plan | Officers and Employees | Class A common shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Compensation and benefits expense | $ | $ 2,916 | $ 2,579 | $ 3,001 |
Restricted Stock Awards | 2016 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares nonvested (in shares) | 143,990 | 126,160 | 110,240 | 104,020
Number of shares vested (in shares) | 75,101 | 56,833 | 59,671 |
Estimated future compensation expense | $ | $ 6,350 |  |  |
Weighted average period compensation expense will be recorded (in years) | 26 months |  |  |
Shares available for future issuance (in shares) | 204,359 |  |  |
Tranche One | Restricted Stock Awards | 2016 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares vested (in shares) | 50,560 |  |  |
Tranche Two | Restricted Stock Awards | 2016 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares vested (in shares) | 41,930 |  |  |
Tranche Three | Restricted Stock Awards | 2016 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares vested (in shares) | 32,760 |  |  |
Tranche Four | Restricted Stock Awards | 2016 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares vested (in shares) | 18,740 |  |  |

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