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Share-Based Compensation - Fair Value assumptions for stock option plan (Details) - USD ($) | 12 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Share-Based compensation |  |  |
Share-based compensation expense | $ 341,000 | $ 177,000 | $ 173,000
Stock Based Incentive Compensation Plan 2009 | Employee |  |  |
Share-Based compensation |  |  |
Share-based compensation expense | 0 | 0 | 0
Stock Based Incentive Compensation Plan 2009 | Non Employee Director |  |  |
Share-Based compensation |  |  |
Share-based compensation expense | 0 | 0 | 173,000
Stock Based Incentive Compensation Plan 2009 | Employee and Non Employee Stock Option |  |  |
Share-Based compensation |  |  |
Unrecognized compensation cost, related to non-vested stock options | $ 0 |  |
Stock Based Incentive Compensation Plan 2009 | Employee and Non Employee Stock Option | Minimum |  |  |
Share-Based compensation |  |  |
Vesting period | 3 years |  |
Stock Based Incentive Compensation Plan 2009 | Employee and Non Employee Stock Option | Maximum |  |  |
Share-Based compensation |  |  |
Expiration term | 10 years |  |
Vesting period | 5 years |  |
2019 Plan | Non Employee Director |  |  |
Share-Based compensation |  |  |
Share-based compensation expense | $ 160,000 | 160,000 | 0
2019 Plan | Employee and Non Employee Stock Option |  |  |
Share-Based compensation |  |  |
Share-based compensation expense | 181,000 | $ 17,000 | $ 0
Unrecognized compensation cost, related to non-vested stock options | $ 164,013 |  |
2019 Plan | Employee and Non Employee Stock Option | Minimum |  |  |
Share-Based compensation |  |  |
Vesting period | 3 years |  |
2019 Plan | Employee and Non Employee Stock Option | Maximum |  |  |
Share-Based compensation |  |  |
Expiration term | 10 years |  |
Vesting period | 5 years |  |

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- Definition The period of time, from the grant date until the time at which the share-based option award expires. + References No definition available. + Details
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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