Summary of Significant Accounting Policies (Policies)	6 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2025
Accounting Policies [Abstract]
Basis of Presentation and Use of Estimates	Basis of Presentation and Use of Estimates The accompanying unaudited Consolidated Financial Statements of SR Bancorp, Inc. (the “Company”) have been prepared in conformity with generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q. The Consolidated Financial Statements are prepared on an accrual basis and include the accounts of the Company’s wholly-owned subsidiary, Somerset Regal Bank (the “Bank”) and its wholly-owned subsidiaries Somerset Investment Co. (the “Investment Co.”), RB Properties, LLC and Somerset Consumer Service Corp. (“SCS”). All significant intercompany accounts and transactions have been eliminated in consolidation. The Investment Co. is a special purpose entity subject to the investment company provisions of the New Jersey Corporation Business Tax Act whose activities are limited to holding investment securities and recognizing income and other gains/losses thereon. RB Properties, LLC was formed to own and manage real estate property acquired through foreclosure or in lieu of foreclosure in connection with loans. RB Properties, LLC is currently inactive. SCS was originally formed to sell annuity products and is currently inactive. The interim Consolidated Financial Statements reflect all adjustments, including normal and recurring accruals, which are, in the opinion of management, considered necessary for a fair presentation of the financial condition and results of operations for the periods presented. The results of operations for the three and six month periods ended December 31, 2025 are not necessarily indicative of the results of operations that may be expected for the full fiscal year or any other period. In preparing the Consolidated Financial Statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the statements of financial condition and the results of operations for the periods presented. Actual results could differ from these estimates. Certain information and note disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). These unaudited Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended June 30, 2025.
Business	Business SR Bancorp, Inc., a Maryland corporation, is the holding company for Somerset Regal Bank. The Bank, which was formed in 1887, serves Essex, Hunterdon, Hudson, Middlesex, Morris, Somerset and Union counties in New Jersey. The Bank is a New Jersey chartered commercial bank subject to the laws and regulations of federal and state agencies. As a locally managed commercial bank, the Bank provides retail and commercial banking services to individuals, businesses and local municipalities through its 14 full-service branch locations. On September 19, 2023, Somerset Savings Bank, SLA converted from the mutual to stock form of organization at which point, the Company became the holding company for Somerset Regal Bank. On that same date, SR Bancorp, Inc. completed its stock offering. The Company’s common stock began trading on the Nasdaq Capital Market under the trading symbol “SRBK” on September 20, 2023. Somerset Regal Bank was formed through the combination of Somerset Savings Bank, SLA and Regal Bank, two New Jersey chartered institutions, on September 19, 2023.
Concentrations of Credit Risk	Concentrations of Credit Risk The Company's lending activity is concentrated in loans secured by real estate located primarily in New Jersey. Credit risk exposure in this area of lending is mitigated by adhering to conservative underwriting practices and policies, and close monitoring of the loan portfolio. The Company does not have any significant concentrations to any one industry or customer. Note 3 discusses the types of investment securities in which the Company invests. Credit risk as it relates to investment activities is mitigated through the monitoring of ratings. The Company's portfolio consists principally of highly-rated government-sponsored agency securities.
Segment Reporting	Segment Reporting Accounting Standards Codification ("ASC") Topic 280, Segment Reporting, establishes standards for the way business enterprises report information about operating segments in annual Consolidated Financial Statements. The Company operates exclusively as a community bank within the "Community Banking" financial services industry. Community Banking encompasses the Company's primary business, which includes providing a wide range of commercial, retail and related banking services. The Company's primary focus within Community Banking is to grow loans using deposits generated by the Company's branches. Our business is generated principally in central and northern New Jersey. The Company’s CEO is the chief operating decision maker who uses consolidated net income to assess performance and profitability of our single business segment. The Company assesses consolidated net income on a monthly basis, including variances to budget and prior period results. Consideration is given to performance of components of the business, such as branches and geographic regions, which are then aggregated. This information is used to achieve strategic initiatives by allowing the chief operation decision maker to manage resources that drive our business and earnings. Additionally, consolidated net income is used to benchmark the Company against its banking peers.
Recently Adopted Accounting Changes and Recent Accounting Standards Not Yet Adopted	Recently Adopted Accounting Changes In November 2023, the Financial Accounting Standards Board (the “FASB”) issued ASU 2023-07 Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures ("ASU 2023-07"). This update requires public entities with reportable segments to provide additional and more detailed disclosures. The Company adopted ASU 2023-07 on June 30, 2025, which did not have a material impact on its Consolidated Financial Statements. 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"). This update provides guidance for profits interest and similar awards. The Company adopted ASU 2024-01 on July 1, 2025, which did not have a material impact on its Consolidated Financial Statements. Accounting Standards Update 2024-02, "Codification Improvements" ("ASU 2024-02"), amends the Codification to remove references to various concept 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. The Company adopted ASU 2024-02 on July 1, 2025, which did not have a material impact on its Consolidated Financial Statements. Recent Accounting Standards Not Yet Adopted In December 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures". The amendments in this ASU require improved annual income tax disclosures surrounding rate reconciliation, income taxes paid, and other disclosures. This update will be effective for annual financial statements issued for fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact of this standard, which is not expected to have a material impact on our financial statements. Accounting Standards Update 2024-03, "Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures" ("ASU 2024-03"), requires additional expense disclosures by public entities in the notes to the financial statements. ASU 2024-03 outlines the specific costs that are required to be disclosed, which include costs such as: employee compensation, depreciation, intangible asset amortization, selling costs and depreciation. It also requires qualitative descriptions of the amounts remaining in the relevant income statement captions that are not separately disaggregated quantitatively in the notes to the financial statements and the entity's definition of selling expenses. The disclosures are required for each interim and annual reporting period. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026. In January 2025, the FASB issued Accounting Standards Update 2025-01, "Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures: Clarifying the Effective Date" ("ASU 2025-01"), clarifying the interim reporting date when an entity must adopt ASU 2024-03. According to ASU 2025-01, ASU 2024-03 is effective for interim periods within fiscal years beginning after December 15, 2027. The Company is currently evaluating the impact of this standard, which is not expected to have a material impact on our financial statements. Accounting Standards Update 2025-06, “Intangible - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software” (“ASU 2025-06”) to modernize the accounting for software costs that are accounted for under Subtopic 350-40, Intangibles—Goodwill and Other—Internal-Use Software (referred to as “internal-use software”). The amendments in this Update are effective for all entities for annual reporting periods beginning after December 15, 2027, and interim reporting periods within those annual reporting periods. Early adoption is permitted as of the beginning of an annual reporting period. The Company is currently evaluating the impact of this standard, which is not expected to have a material impact on our financial statements.
Subsequent Events	Subsequent Events The Company has evaluated subsequent events occurring after December 31, 2025 up to the date these financial statements were issued and filed with the Securities and Exchange Commission and has not identified any subsequent events.

Disclosure of accounting policy for segment reporting.

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+ Details

SR Bancorp, Inc. 10-Q