Recent Accounting Pronouncements	9 Months Ended
Recent Accounting Pronouncements	Jun. 30, 2025
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS In December 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this ASU are intended to provide more transparency about income tax information through improvements to income tax disclosures primarily related to the rate reconciliation and income tax paid information. The ASU requires disclosure in the rate reconciliation of specific categories as well as additional information for reconciling items that meet a quantitative threshold. The amendment requires on an annual basis a reconciliation broken out into specified categories with certain reconciling items further broken out by nature and jurisdiction to the extent those items exceed a specified threshold. In addition, all entities are required to disclose income taxes paid, net of refunds received disaggregated by federal, state/local, and foreign and by jurisdiction if the amount is at least 5% of total income tax payments, net of refunds received. The new standard is effective for annual periods beginning after December 15, 2024, with early adoption permitted. An entity should apply the amendments in this ASU on a prospective basis. The Company expects this ASU to only impact its disclosure requirements and does not expect the adoption of this ASU to have a material impact on its business operations or the Company's consolidated financial statements. In November 2024, the FASB issued ASU 2024-03, Income Statement (Topic 220): Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures. The amendments in this ASU require disclosure, in the notes to the financial statements, of specified information about certain costs and expenses. In conjunction with recent standards that enhanced the disaggregation of revenue and income tax information, the disaggregated expense information will enable investors to better understand the major components of an entity's income statement. The new standard is effective for annual periods beginning after December 15, 2026, with early adoption permitted. The Company expects this ASU to only impact its disclosure requirements and does not expect the adoption of the ASU to have a material impact on its business operations or the Company's consolidated financial statements. In January 2025, the FASB issued ASU 2025-01, Income Statement (Subtopic 220-40): Income Statement-Reporting Comprehensive Income-Expense Disaggregations Disclosures: Clarifying the effective Date. The amendments in this ASU amend the effective date of ASU 2024-03 to clarify that all public business entities are required to adopt the guidance in annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027. Early adoption of ASU 2025-01 is permitted. Other accounting standards that have been issued by the FASB or other standards-setting bodies are not currently expected to have a material effect on the Company's financial position, results of operations or cash flows.

The entire disclosure for change in accounting principle. Includes, but is not limited to, nature, reason, and method of adopting amendment to accounting standards or other change in accounting principle.

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TIMBERLAND BANCORP INC 10-Q