Summary of Significant Accounting Policies (Policies)	9 Months Ended
Jun. 30, 2022
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 (the "Company"). All significant intercompany accounts and transactions have been eliminated in consolidation. The U.S. dollar is the functional currency for all of the Company’s operations in the United States ("U.S.") and its non-operating subsidiaries. For these operations, all gains and losses from completed currency transactions are included in income. 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. 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 2021 Annual Report on Form 10-K. The year-end consolidated balance sheet data was derived from the audited financial statements and disclosures required by accounting principles generally accepted in the U.S. 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.
Net (Loss)/Income per Share	Net (Loss)/Income per ShareThe Company’s net loss and net income per basic share has been computed based on the weighted-average number of common shares outstanding.
Recently Adopted Accounting Standards	Recently Adopted Accounting StandardsIn December 2019, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2019-12, "Income Taxes (ASC 740) – Simplifying the Accounting for Income Taxes," which is intended to reduce complexity in the accounting for income taxes while maintaining or improving the usefulness of information provided to financial statement users. The guidance amends certain existing provisions under ASC 740 to address a number of distinct items. The Company adopted ASU 2019-12 effective October 1, 2021. Adoption of the amendments in this ASU did not have an impact to the Company's results of operations and financial condition.
Asset Impairment	Asset ImpairmentThe Company reviews the carrying value of its long-lived assets ("asset groups"), including property, plant and equipment, when events and circumstances indicate a triggering event has occurred. This review is performed using estimates of future undiscounted cash flows, which include proceeds from disposal of assets. Under the Accounting Standard Codification ("ASC") 360 ("Topic 360"), if the carrying value of a long-lived asset is greater than the estimated undiscounted future cash flows, then the long-lived asset is considered impaired and an impairment charge is recorded for the amount by which the carrying value of the long-lived asset exceeds its fair value.
Reclassification	ReclassificationCertain amounts in prior years have been reclassified to conform to the 2022 consolidated condensed statement presentation.

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Jun. 30, 2022

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

The U.S. dollar is the functional currency for all of the Company’s operations in the United States ("U.S.") and its non-operating subsidiaries. For these operations, all gains and losses from completed currency transactions are included in income. 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. 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 2021 Annual Report on Form 10-K. The year-end consolidated balance sheet data was derived from the audited financial statements and disclosures required by accounting principles generally accepted in the U.S. 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.

Net (Loss)/Income per Share

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

Recently Adopted Accounting Standards

Recently Adopted Accounting StandardsIn December 2019, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2019-12, "Income Taxes (ASC 740) – Simplifying the Accounting for Income Taxes," which is intended to reduce complexity in the accounting for income taxes while maintaining or improving the usefulness of information provided to financial statement users. The guidance amends certain existing provisions under ASC 740 to address a number of distinct items. The Company adopted ASU 2019-12 effective October 1, 2021. Adoption of the amendments in this ASU did not have an impact to the Company's results of operations and financial condition.

Asset Impairment

Asset ImpairmentThe Company reviews the carrying value of its long-lived assets ("asset groups"), including property, plant and equipment, when events and circumstances indicate a triggering event has occurred. This review is performed using estimates of future undiscounted cash flows, which include proceeds from disposal of assets. Under the Accounting Standard Codification ("ASC") 360 ("Topic 360"), if the carrying value of a long-lived asset is greater than the estimated undiscounted future cash flows, then the long-lived asset is considered impaired and an impairment charge is recorded for the amount by which the carrying value of the long-lived asset exceeds its fair value.

Reclassification

ReclassificationCertain amounts in prior years have been reclassified to conform to the 2022 consolidated condensed statement presentation.