Summary of Significant Accounting Policies (Policies)	6 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim information, and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X promulgated by the Securities and Exchange Commission (“SEC”). Accordingly, they do not include all information and notes required by U.S. GAAP for annual financial statements. In our opinion, the interim financial statements reflect all adjustments, which are all normal recurring adjustments, that are necessary to provide a fair presentation of the financial results for the interim periods presented. Operating results for interim periods are not necessarily indicative of results that may be expected for an entire fiscal year. The condensed consolidated balance sheet as of September 30, 2023 has been derived from the audited consolidated financial statements as of such date. For a more complete understanding of our business, financial position, operating results, cash flows, risk factors, and other matters, please refer to our Annual Report on Form 10-K for the fiscal year ended September 30, 2023.
Going Concern	Going Concern These condensed consolidated financial statements have been prepared in accordance with U.S. GAAP assuming we will continue as a going concern. The going concern assumption contemplates the realization of assets and satisfaction of liabilities in the normal course of business. However, substantial doubt about our ability to continue as a going concern exists. We have recently experienced losses from our operations and used a significant amount of cash, amounting to a net loss of $8.5 million and $14.2 million for the three and six months ended March 31, 2024, respectively, and net cash outflows from continuing operations of $9.7 million for the six months ended March 31, 2024. We expect to continue to incur losses and use cash in our operations in the near term. As a result of our recent cash outflows, we have taken actions to manage our liquidity and plan to continue to do so. As of March 31, 2024, our cash and cash equivalents totaled $12.0 million, including restricted cash of $0.5 million. We are evaluating the sufficiency of our existing balances of cash and cash equivalents and cash flows from operations, together with additional actions we could take including further expense reductions and/or potentially raising capital through additional debt or equity issuances, or from the potential monetization of certain assets. However, we may not be successful in executing on our plans to manage our liquidity, including recognizing the expected benefits from our previously announced restructuring program, or raising additional funds if we elect to do so, and as a result substantial doubt about our ability to continue as a going concern exists.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities, as of the date of the condensed consolidated financial statements, and the reported amounts of revenue and expenses during the reported period. Such estimates include accounts receivable, inventories, long-lived assets, product warranty liabilities, legal contingencies, bonus accruals, income taxes, asset retirement obligations, and pension obligation, as well as the evaluation associated with the Company's assessment of its ability to continue as a going concern. We develop estimates based on historical experience and on various assumptions about the future that are believed to be reasonable based on the best information available to us. Our reported financial position or results of operations may be materially different under changed conditions or when using different estimates and assumptions, particularly with respect to significant accounting policies. In the event that estimates or assumptions prove to differ from actual results, adjustments are made in subsequent periods to reflect more current information.
Legal Proceedings	Professional legal fees are expensed when incurred. We accrue for contingent losses when such losses are probable and reasonably estimable.