Summary of Significant Accounting Policies (Policies)	6 Months Ended
Mar. 31, 2024
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The accompanying unaudited consolidated condensed financial statements include the accounts of SIFCO Industries, Inc. and its wholly-owned subsidiaries (collectively, the "Company"). All significant intercompany accounts and transactions have been eliminated in consolidation. The United States ("U.S.") dollar is the functional currency for all of the Company’s operations in the U.S. and its non-operating subsidiaries. For these operations, all gains and losses from completed currency transactions are included in net loss. The functional currency for the Company's other non-U.S. subsidiaries is the Euro. Assets and liabilities are translated into U.S. dollars at the rates of exchange at the end of the period, and revenues and expenses are translated using average rates of exchange for the period which approximate the rates in effect at the date of the transaction. Foreign currency translation adjustments are reported as a component of accumulated other comprehensive loss in the unaudited consolidated condensed financial statements. These unaudited consolidated condensed financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company’s fiscal 2023 Annual Report on Form 10-K. The year-end consolidated condensed balance sheet contained in these financial statements was derived from the audited financial statements and disclosures required by accounting principles generally accepted in the U.S. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) and disclosures considered necessary for a fair presentation have been included. The results of operations for any interim period are not necessarily indicative of the results to be expected for other interim periods or the full year.
Short-term Investments	Short-term Investments In general, short-term investments have a maturity of three months to one year at the date of purchase. Short-term investments classified as held-to-maturity are recorded at cost, which approximates fair value.
Accounts Receivable and Allowance for Credit Losses	Accounts Receivable and Allowance for Credit Losses Accounts receivable represent the Company’s unconditional rights to consideration, subject to the payment terms of the contract, for which only the passage of time is required before payment. Unbilled receivables are reflected under contract assets on the consolidated condensed balance sheets. The Company establishes allowances for credit losses on accounts receivable, customer financing receivables, and certain other financial assets. The adequacy of these allowances are assessed quarterly through consideration of factors including, but not limited to, customer credit ratings, bankruptcy filings, published or estimated credit default rates, age of the receivable, expected loss rates and collateral exposures. The Company determines the creditworthiness of each customer based upon publicly available information and information obtained directly from its customers.
Net Loss per Share	Net Loss per ShareThe Company’s net loss per basic share has been computed based on the weighted-average number of common shares outstanding.
Recent Accounting Standards Adopted/Not Yet Adopted	Recent Accounting Standards Adopted In June 2016, the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments" and subsequent updates. ASU 2016-13 changes how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The new guidance will replace the current incurred loss approach with an expected loss model. The new expected credit loss impairment model will apply to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held-to-maturity debt instruments, net investments in leases, loan commitments and standby letters of credit. Upon initial recognition of the exposure, the expected credit loss model requires entities to estimate the credit losses expected over the life of an exposure (or pool of exposures). The estimate of expected credit losses should consider historical information, current information and reasonable and supportable forecasts, including estimates of prepayments. Financial instruments with similar risk characteristics should be grouped together when estimating expected credit losses. ASU 2016-13 does not prescribe a specific method to make the estimate, so its application will require significant judgment. ASU 2016-13 is effective for public companies in fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. However, in November 2019, the FASB issued ASU 2019-10, "Financial Instruments - Credit Loss (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842)," which defers the effective date for public filers that qualify as a smaller reporting company ("SRC"), as defined by the Securities and Exchange Commission, to fiscal years after December 15, 2022, including interim periods within those fiscal years. Because SIFCO is considered a SRC, this ASU is effective for the Company beginning October 1, 2023. The effect of adopting this ASU did not have an impact to the Company's results within the consolidated condensed statements of operations and financial condition. H. Recent Accounting Standards Not Yet Adopted In July 2023, the FASB issued ASU 2023-03, "Presentation of Financial Statement (Topic 205), Income Statement - Reporting Comprehensive Income (Topic 220), Distinguishing Liabilities from Equity (Topic 480), Equity (Topic 505), and Compensation - Stock Compensation (Topic 718)", to amend various SEC paragraphs in the Accounting Standards Codification to reflect the issuance of SEC Staff Accounting Bulletin No. 120, among other things. The ASU does not provide any new guidance so there is no transition or effective date associated with it. The Company is currently assessing the impact of adopting ASU 2023-03 on the consolidated condensed financial statements and related disclosures. In November 2023, the FASB issued ASU 2023-07, "Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures", that would enhance disclosures for significant segment expenses for all public entities required to report segment information in accordance with ASC 280. ASC 280 requires a public entity to report for each reportable segment a measure of segment profit or loss that its chief operating decision maker ("CODM") uses to assess segment performance and to make decisions about resource allocations. The amendments in ASU 2023-07 improve financial reporting by requiring disclosure of incremental segment information on an annual and interim basis for all public entities to enable investors to develop more useful financial analyses. Currently, Topic 280 requires that a public entity disclose certain information about its reportable segments. For example, a public entity is required to report a measure of segment profit or loss that the CODM uses to assess segment performance and make decisions about allocating resources. ASC 280 also requires other specified segment items and amounts such as depreciation, amortization and depletion expense to be disclosed under certain circumstances. The amendments in ASU 2023-07 do not change or remove those disclosure requirements. The amendments in ASU 2023-07 also do not change how a public entity identifies its operating segments, aggregates those operating segments, or applies the quantitative thresholds to determine its reportable segments. The amendments in ASU 2023-07 are effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. A public entity should apply the amendments in ASU 2023-07 retrospectively to all prior periods presented in the financial statements. The Company is currently assessing the impact of adopting ASU 2023-07 on the consolidated condensed financial statements and related disclosures. In December 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures". ASU 2023-09 is intended to enhance the transparency and decision usefulness of income tax disclosures. The amendments in ASU 2023-09 address investor requests for enhanced income tax information primarily through changes to the rate reconciliation and income taxes paid information. Early adoption is permitted. A public entity should apply the amendments in ASU 2023-09 prospectively to all annual periods beginning after December 15, 2024. The Company is currently evaluating the impact of this standard on our consolidated condensed financial statements and related disclosures. In March 2024, the FASB issued ASU 2024-01 “Compensation - Stock Compensation (Topic 718) - Scope Application of Profits Interest and Similar Awards” (“ASU 2024-01”) clarifies how an entity determines whether a profits interest or similar award is within the scope of Topic 718 or is not a share-based payment arrangement and therefore within the scope of other guidance. ASU 2024-01 provides an illustrative example with multiple fact patterns and also amends certain language in the “Scope” and “Scope Exceptions” sections of Topic 718 to improve its clarity and operability without changing the guidance. Entities can apply the amendments either retrospectively to all prior periods presented in the financial statements or prospectively to profits interest and similar awards granted or modified on or after the date of adoption. If prospective application is elected, an entity must disclose the nature of and reason for the change in accounting principle. The amendments in ASU 2024-01 are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2024. The Company is currently assessing the impact of this standard on our consolidated condensed financial statements and related disclosures. In March 2024, the FASB issued ASU 2024-02 “Codification Improvements” (“ASU 2024-02”) amends the Codification to remove references to various concepts statements and impacts a variety of topics in the Codification. The amendments apply to all reporting entities within the scope of the affected accounting guidance, but in most instances the references removed are extraneous and not required to understand or apply the guidance. Generally, the amendments in ASU 2024-02 are not intended to result in significant accounting changes for most entities and is effective or fiscal years beginning after December 15, 2024. The Company is currently assessing the impact of this standard on our consolidated condensed financial statements and related disclosures.
Employee Retention Credit	Employee Retention Credit Under the Employee Retention Credit ("ERC") program, eligible businesses, both for-profit and not-for-profit, that experienced a full or partial government-ordered suspension of operations or a "significant" decline in gross receipts in any quarter (more than 50% decrease in 2020 from 2019, and more than 20% in 2021) could receive a quarterly refundable payroll tax credit. The Company, with reasonably assured qualification, submitted for refunds under the ERC program on January 23, 2024. These submissions are still pending review and approval from the Internal Revenue Service ("IRS"). As no authoritative guidance exists under U.S. GAAP for reporting ERCs, the Company adopted International Accounting Standards ("IAS") 20 – Accounting for Government Grants and Disclosure of Government Assistance, which permits the recording and presentation of either the gross amount as other income or netting the credit against related expense. The ERC will be recognized as a reduction in other manufacturing and selling, general and administrative expenses and allocated to the financial statement categories from which the payroll taxes were originally incurred.
Revenue	The Company produces forged components for (i) turbine engines that power commercial, business and regional aircraft as well as military aircraft and other military applications; (ii) airframe applications for a variety of aircraft; (iii) industrial gas and steam turbine engines for power generation units; and (iv) commercial space, semiconductor and other commercial applications. Revenue is recognized when performance obligations under the terms of the contract with a customer of the Company are satisfied. A portion of the Company's contracts are from purchase orders ("PO's"), which continue to be recognized as of a point in time when products are shipped from the Company's manufacturing facilities or at a later time when control of the products transfers to the customer. Under the revenue standard, the Company recognizes certain revenue over time as it satisfies the performance obligations because the conditions of transfer of control to the applicable customer are as follows: •Certain military contracts, which relate to the provisions of specialized or unique goods to the U.S. government with no alternative use, include provisions within the contract that are subject to the Federal Acquisition Regulation ("FAR"). The FAR provision allows the customer to unilaterally terminate the contract for convenience and requires the customer to pay the Company for costs incurred plus reasonable profit margin and take control of any work in process. •For certain commercial contracts involving customer-specific products with no alternative use, the contract may fall under the FAR clause provisions noted above for military contracts or may include certain provisions within their contract that the customer controls the work in process based on contractual termination clauses or restrictions of the Company's use of the product and the Company possesses a right to payment for work performed to date plus reasonable profit margin. As a result of control transferring over time for these products, revenue is recognized based on progress toward completion of the performance obligation. The selection of the method to measure progress towards completion requires judgment and is based on the nature of the products to be provided. The Company elected to use the cost to cost input method of progress based on costs incurred for these contracts because it best depicts the transfer of goods to the customer based on incurring costs on the contracts. Under this method, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred.

Summary of Significant Accounting Policies (Policies)

6 Months Ended

Mar. 31, 2024

The accompanying unaudited consolidated condensed financial statements include the accounts of SIFCO Industries, Inc. and its wholly-owned subsidiaries (collectively, the "Company"). All significant intercompany accounts and transactions have been eliminated in consolidation.

The United States ("U.S.") dollar is the functional currency for all of the Company’s operations in the U.S. and its non-operating subsidiaries. For these operations, all gains and losses from completed currency transactions are included in net loss. The functional currency for the Company's other non-U.S. subsidiaries is the Euro. Assets and liabilities are translated into U.S. dollars at the rates of exchange at the end of the period, and revenues and expenses are translated using average rates of exchange for the period which approximate the rates in effect at the date of the transaction. Foreign currency translation adjustments are reported as a component of accumulated other comprehensive loss in the unaudited consolidated condensed financial statements.

These unaudited consolidated condensed financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company’s fiscal 2023 Annual Report on Form 10-K. The year-end consolidated condensed balance sheet contained in these financial statements was derived from the audited financial statements and disclosures required by accounting principles generally accepted in the U.S. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) and disclosures considered necessary for a fair presentation have been included. The results of operations for any interim period are not necessarily indicative of the results to be expected for other interim periods or the full year.

Short-term Investments

In general, short-term investments have a maturity of three months to one year at the date of purchase. Short-term investments classified as held-to-maturity are recorded at cost, which approximates fair value.

Accounts Receivable and Allowance for Credit Losses

Accounts receivable represent the Company’s unconditional rights to consideration, subject to the payment terms of the contract, for which only the passage of time is required before payment. Unbilled receivables are reflected under contract assets on the consolidated condensed balance sheets.

The Company establishes allowances for credit losses on accounts receivable, customer financing receivables, and certain other financial assets. The adequacy of these allowances are assessed quarterly through consideration of factors including, but not limited to, customer credit ratings, bankruptcy filings, published or estimated credit default rates, age of the receivable, expected loss rates and collateral exposures. The Company determines the creditworthiness of each customer based upon publicly available information and information obtained directly from its customers.

Net Loss per Share

Net Loss per ShareThe Company’s net loss per basic share has been computed based on the weighted-average number of common shares outstanding.

Recent Accounting Standards Adopted/Not Yet Adopted

Recent Accounting Standards Adopted

In June 2016, the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments" and subsequent updates. ASU 2016-13 changes how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The new guidance will replace the current incurred loss approach with an expected loss model. The new expected credit loss impairment model will apply to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held-to-maturity debt instruments, net investments in leases, loan commitments and standby letters of credit. Upon initial recognition of the exposure, the expected credit loss model requires entities to estimate the credit losses expected over the life of an exposure (or pool of exposures). The estimate of expected credit losses should consider historical information, current information and reasonable and supportable forecasts, including estimates of prepayments. Financial instruments with similar risk characteristics should be grouped together when estimating expected credit losses. ASU 2016-13 does not prescribe a specific method to make the estimate, so its application will require significant judgment. ASU 2016-13 is effective for public companies in fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. However, in November 2019, the FASB issued ASU 2019-10, "Financial Instruments - Credit Loss (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842)," which defers the effective date for public filers that qualify as a smaller reporting company ("SRC"), as defined by the Securities and Exchange Commission, to fiscal years after December 15, 2022, including interim periods within those fiscal years. Because SIFCO is considered a SRC, this ASU is effective for the

Company beginning October 1, 2023. The effect of adopting this ASU did not have an impact to the Company's results within the consolidated condensed statements of operations and financial condition.

H. Recent Accounting Standards Not Yet Adopted

In July 2023, the FASB issued ASU 2023-03, "Presentation of Financial Statement (Topic 205), Income Statement - Reporting Comprehensive Income (Topic 220), Distinguishing Liabilities from Equity (Topic 480), Equity (Topic 505), and Compensation - Stock Compensation (Topic 718)", to amend various SEC paragraphs in the Accounting Standards Codification to reflect the issuance of SEC Staff Accounting Bulletin No. 120, among other things. The ASU does not provide any new guidance so there is no transition or effective date associated with it. The Company is currently assessing the impact of adopting ASU 2023-03 on the consolidated condensed financial statements and related disclosures.

In November 2023, the FASB issued ASU 2023-07, "Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures", that would enhance disclosures for significant segment expenses for all public entities required to report segment information in accordance with ASC 280. ASC 280 requires a public entity to report for each reportable segment a measure of segment profit or loss that its chief operating decision maker ("CODM") uses to assess segment performance and to make decisions about resource allocations. The amendments in ASU 2023-07 improve financial reporting by requiring disclosure of incremental segment information on an annual and interim basis for all public entities to enable investors to develop more useful financial analyses. Currently, Topic 280 requires that a public entity disclose certain information about its reportable segments. For example, a public entity is required to report a measure of segment profit or loss that the CODM uses to assess segment performance and make decisions about allocating resources. ASC 280 also requires other specified segment items and amounts such as depreciation, amortization and depletion expense to be disclosed under certain circumstances. The amendments in ASU 2023-07 do not change or remove those disclosure requirements. The amendments in ASU 2023-07 also do not change how a public entity identifies its operating segments, aggregates those operating segments, or applies the quantitative thresholds to determine its reportable segments. The amendments in ASU 2023-07 are effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. A public entity should apply the amendments in ASU 2023-07 retrospectively to all prior periods presented in the financial statements. The Company is currently assessing the impact of adopting ASU 2023-07 on the consolidated condensed financial statements and related disclosures.

In December 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures". ASU 2023-09 is intended to enhance the transparency and decision usefulness of income tax disclosures. The amendments in ASU 2023-09 address investor requests for enhanced income tax information primarily through changes to the rate reconciliation and income taxes paid information. Early adoption is permitted. A public entity should apply the amendments in ASU 2023-09 prospectively to all annual periods beginning after December 15, 2024. The Company is currently evaluating the impact of this standard on our consolidated condensed financial statements and related disclosures.

In March 2024, the FASB issued ASU 2024-01 “Compensation - Stock Compensation (Topic 718) - Scope Application of Profits Interest and Similar Awards” (“ASU 2024-01”) clarifies how an entity determines whether a profits interest or similar award is within the scope of Topic 718 or is not a share-based payment arrangement and therefore within the scope of other guidance. ASU 2024-01 provides an illustrative example with multiple fact patterns and also amends certain language in the “Scope” and “Scope Exceptions” sections of Topic 718 to improve its clarity and operability without changing the guidance. Entities can apply the amendments either retrospectively to all prior periods presented in the financial statements or prospectively to profits interest and similar awards granted or modified on or after the date of adoption. If prospective application is elected, an entity must disclose the nature of and reason for the change in accounting principle. The amendments in ASU 2024-01 are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2024. The Company is currently assessing the impact of this standard on our consolidated condensed financial statements and related disclosures.

In March 2024, the FASB issued ASU 2024-02 “Codification Improvements” (“ASU 2024-02”) amends the Codification to remove references to various concepts statements and impacts a variety of topics in the Codification. The amendments apply to all reporting entities within the scope of the affected accounting guidance, but in most instances the references removed are extraneous and not required to understand or apply the guidance. Generally, the amendments in ASU 2024-02 are not intended to result in significant accounting changes for most entities and is effective or fiscal years beginning after December 15, 2024. The Company is currently assessing the impact of this standard on our consolidated condensed financial statements and related disclosures.

Employee Retention Credit

Under the Employee Retention Credit ("ERC") program, eligible businesses, both for-profit and not-for-profit, that experienced a full or partial government-ordered suspension of operations or a "significant" decline in gross receipts in any quarter (more than 50% decrease in 2020 from 2019, and more than 20% in 2021) could receive a quarterly refundable payroll tax credit. The Company, with reasonably assured qualification, submitted for refunds under the ERC program on January 23, 2024. These submissions are still pending review and approval from the Internal Revenue Service ("IRS").

As no authoritative guidance exists under U.S. GAAP for reporting ERCs, the Company adopted International Accounting Standards ("IAS") 20 – Accounting for Government Grants and Disclosure of Government Assistance, which permits the recording and presentation of either the gross amount as other income or netting the credit against related expense. The ERC will be recognized as a reduction in other manufacturing and selling, general and administrative expenses and allocated to the financial statement categories from which the payroll taxes were originally incurred.

Revenue

The Company produces forged components for (i) turbine engines that power commercial, business and regional aircraft as well as military aircraft and other military applications; (ii) airframe applications for a variety of aircraft; (iii) industrial gas and steam turbine engines for power generation units; and (iv) commercial space, semiconductor and other commercial applications.

Revenue is recognized when performance obligations under the terms of the contract with a customer of the Company are satisfied. A portion of the Company's contracts are from purchase orders ("PO's"), which continue to be recognized as of a point in time when products are shipped from the Company's manufacturing facilities or at a later time when control of the products transfers to the customer. Under the revenue standard, the Company recognizes certain revenue over time as it satisfies the performance obligations because the conditions of transfer of control to the applicable customer are as follows:

•Certain military contracts, which relate to the provisions of specialized or unique goods to the U.S. government with no alternative use, include provisions within the contract that are subject to the Federal Acquisition Regulation ("FAR"). The FAR provision allows the customer to unilaterally terminate the contract for convenience and requires the customer to pay the Company for costs incurred plus reasonable profit margin and take control of any work in process.

•For certain commercial contracts involving customer-specific products with no alternative use, the contract may fall under the FAR clause provisions noted above for military contracts or may include certain provisions within their contract that the customer controls the work in process based on contractual termination clauses or restrictions of the Company's use of the product and the Company possesses a right to payment for work performed to date plus reasonable profit margin.

As a result of control transferring over time for these products, revenue is recognized based on progress toward completion of the performance obligation. The selection of the method to measure progress towards completion requires judgment and is

based on the nature of the products to be provided. The Company elected to use the cost to cost input method of progress based on costs incurred for these contracts because it best depicts the transfer of goods to the customer based on incurring costs on the contracts. Under this method, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred.