Employee Benefits Plans - Narrative (Details) - USD ($) |
1 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Aug. 31, 2020 |
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2018 |
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| Compensation And Retirement Disclosure [Abstract] | ||||
| Benefit plan period | 180 months | |||
| Weighted-average discount rate | 4.08% | |||
| MSP termination benefits payment | $ 5,175,000 | $ 5,175,000 | ||
| Additional liability recorded | $ 720,000 | |||
| Matching contribution (as a percent) (up to) | 4.00% | |||
| Contribution to plan | $ 397,000 | 380,000 | $ 342,000 | |
| Contribution to profit sharing plan | $ 0 | $ 0 | $ 0 | |
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- Definition Defined benefit plan benefit obligation termination benefits paid. No definition available.
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- Definition Defined Benefit Plan, Plan Period No definition available.
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- References No definition available.
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- Definition Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement. No definition available.
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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cost for defined contribution plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. No definition available.
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