Revenue from Contracts with Customers (Narrative) (Details) - USD ($) |
9 Months Ended | ||
|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Sep. 30, 2019 |
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| Revenue from Contracts with Customers [Abstract] | |||
| Contract liability | $ 249,000 | $ 249,000 | |
| Unearned revenue | 0 | $ 0 | |
| Revenue recognized from previously recorded contract liabilities | $ 804,000 | $ 723,000 | |
| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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