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Equity (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2021
Share-based Payment Arrangement [Abstract] |
Summary of the Company's RSU activity |
Table 14.1: Restricted Stock Units and Performance Based Stock Units
| Restricted Stock Units |  | Performance Stock Units |  | Total |  | Weighted Average Grant Date Fair Value
Non-vested outstanding units as of September 30, 2020 | 642,411 |  |  | — |  |  | 642,411 |  |  | $ | 68.73 |
Granted | 383,864 |  |  | 85,482 |  |  | 469,346 |  |  | 76.80 |
Cancelled/Forfeited | (49,019) |  |  | (478) |  |  | (49,497) |  |  | 73.82 |
Vested | (346,813) |  |  | — |  |  | (346,813) |  |  | 67.93 |
Non-vested outstanding units as of September 30, 2021 | 630,443 |  |  | 85,004 |  |  | 715,447 |  |  | 74.06 |
Schedule of Changes in Accumulated Other Comprehensive Loss by Category | Accumulated Other Comprehensive Income
Table 14.2: Details of Changes in Accumulated Other Comprehensive Loss by Category
| Foreign currency translation adjustment |  | Net unrealized loss on derivatives, net of tax |  | Total
| (in thousands)
Balance as of September 30, 2018 | $ | (36,953) |  |  | $ | — |  |  | $ | (36,953) |
Other comprehensive losses before reclassifications | (8,427) |  |  | — |  |  | (8,427) |
Net current period other comprehensive losses | (8,427) |  |  | — |  |  | (8,427) |
Balance as of September 30, 2019 | (45,380) |  |  | — |  |  | (45,380) |
Other comprehensive income before reclassifications | 2,742 |  |  | — |  |  | 2,742 |
Net current period other comprehensive income | 2,742 |  |  | — |  |  | 2,742 |
Balance as of September 30, 2020 | (42,638) |  |  | — |  |  | (42,638) |
Other comprehensive income before reclassifications | 3,033 |  |  | (811) |  |  | 2,222 |
Amounts reclassified from accumulated other comprehensive loss | — |  |  | 508 |  |  | 508 |
Net current period other comprehensive income | 3,033 |  |  | (303) |  |  | 2,730 |
Balance as of September 30, 2021 | $ | (39,605) |  |  | $ | (303) |  |  | $ | (39,908) |

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