v3.23.3

Summary of Significant Accounting Policies (Narrative) (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 USD ($) customer | Sep. 30, 2022 USD ($) customer | Jun. 30, 2023 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |
Accounts receivable - trade | $ 0 |  | $ 0
Reserve for loss on contract | 0 |  | 0
Revenue recognized | 50,000 | $ 0 |
Contract assets | 0 |  | 0
Contract liabilities | $ 0 |  | 0
Revenue recognized included in contract liabilities |  | 56,000 |
Lease, Practical Expedients, Package [true false] | false |  |
Investments in debt securities | $ 0 |  | 0
Inventory | 0 |  | 0
Research and development expense | $ 0 | 3,062,000 |
Dividend rate | 0.00% |  |
Amount in excess of insured limit | $ 4,100,000 |  | $ 6,900,000
Revenue reported in discontinued operations |  | $ 56,000 |
Revenues | $ 50,000 |  |
One Customer [Member] | Revenue [Member] | Customer Concentration Risk [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Number of major customers | customer | 1 | 1 |
Revenue reported in discontinued operations | $ 0 |  |
Concentration risk, percentage |  | 100.00% |
Revenues |  | $ 0 |
Minimum [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Fixed assets, useful life | 3 years |  |
Maximum [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Fixed assets, useful life | 39 years |  |
Intellectual Property [Member] |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Intangible asset, useful life | 20 years |  |

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