Inventories - Narrative (Details) - USD ($) |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2021 |
Mar. 31, 2020 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
| Inventory Disclosure [Abstract] | |||||
| Proceeds from federal relief grants | $ 163,000 | $ 4,299,000 | $ 15,597,000 | $ 4,629,000 | $ 4,466,000 |
| X | ||||||||||
- Definition Proceeds From Federal Relief Grants No definition available.
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| X | ||||||||||
- References No definition available.
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