Business Acquisitions - Proforma Revenue and Net Income (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
| Business Combinations [Abstract] | |||
| Pro forma revenue | $ 984,222 | $ 981,079 | $ 996,873 |
| Business Acquisition, Pro Forma Net Income (Loss) | $ 21,847 | $ 46,701 | $ 51,544 |
| X | ||||||||||
- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|