Nature of Operations and Basis of Presentation	9 Months Ended
Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations and Basis of Presentation	NOTE 1 – NATURE OF OPERATIONS AND BASIS OF PRESENTATION PyraMax Bank, FSB (the “Bank”) is chartered as a federal mutual savings bank. The Bank operates as a full-service financial institution, providing a full range of financial services, including the granting of commercial, residential and consumer loans, and acceptance of deposits from individual customers and small businesses in the metropolitan Milwaukee, Wisconsin area. The Bank is subject to competition from other financial institutions and nonfinancial institutions providing financial products. In addition, the Bank is subject to the regulations of certain regulatory agencies and undergoes periodic examination by those regulatory agencies. On September 5, 2018, the Board of Directors of the Bank adopted a Plan of Reorganization from a Mutual Savings Bank to a Mutual Holding Company and Stock Issuance Plan (the “Plan”). The Plan has been approved by the Board of Governors of the Federal Reserve System by letter dated October 17, 2018, by the Office of the Comptroller of the Currency by letter dated October 18, 2018, and by the Federal Deposit Insurance Corporation by letter dated October 31, 2018. The Plan must also be approved by the affirmative vote of at least a majority of the total votes eligible to be cast by the voting members of the Bank at a special meeting of members to be held on December 21, 2018. Pursuant to the Plan, the Bank proposes to reorganize into a mutual holding company form of ownership. The Bank will convert to a stock savings bank and issue all of its outstanding stock to a new holding company to be organized under the laws of the United States, which will be named 1895 Bancorp of Wisconsin, Inc (the “Company”). Pursuant to the Plan, the Company will sell stock to the public, with the total offering value and number of shares of common stock based upon an independent appraiser’s valuation. The stock will be priced at $10.00 per share. In addition, the Bank’s Board of Directors will adopt an employee stock ownership plan (the “ESOP”), which will subscribe for up to 3.92% of the common stock of the new holding company to be outstanding upon the completion of the reorganization and stock issuance. the Company will offer 45% of its to-be-outstanding common on a priority basis to the Bank’s eligible members, the ESOP, a charitable foundation and certain other persons. 1895 Bancorp of Wisconsin, MHC will be organized as a mutual holding company under the laws of the United States and will own the remaining 55% of the to-be-outstanding common stock of the Company upon completion of the reorganization and stock issuance. The costs of the reorganization and the issuing of the common stock will be deferred and deducted from the sales proceeds of the offering. If the conversion is unsuccessful, all deferred costs will be charged to operations. As of September 30, 2018, the Bank had incurred deferred reorganization costs of $413. The accompanying unaudited interim financial statements and the notes thereto have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”). In the opinion of management, the accompanying unaudited interim financial statements contain all normal recurring adjustments necessary to present fairly the financial positions results of operations, changes in equity and cash flows for the periods presented. The accompanying unaudited financial statements and related notes should be read in conjunction with the audited annual financial statements and the notes thereto included in the Company’s definitive prospectus, dated November 6, 2018 (the “Prospectus”), as filed with the Securities and Exchange Commission on November 15, 2018. In preparing financial statements in conformity with GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet, and reported amounts of revenues and expenses during the reporting period. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan and lease losses, the fair values of securities, financial instruments and mortgage servicing rights, and the valuation of deferred income tax assets. Actual results could differ from those estimates. On April 5, 2012, the Jumpstart Our Business Startups Act (the “JOBS Act”) was signed into law. The JOBS Act contains provisions that, among other things, reduce certain reporting requirements for qualifying public companies and define an “emerging growth company.” As an emerging growth company, the Company may delay adoption of new or revised financial accounting standards until such date that the standards are required to be adopted by non-issuer companies. If such standards would not apply to non-issuer companies, no deferral would be applicable. The Company intends to take advantage of the benefits of the extended transition periods allowed under the JOBS Act. Accordingly, the Company’s financial statements may not be comparable to those of public companies that adopt new or revised financial accounting standards as of an earlier date. The effective dates of the following recent accounting standards reflect those that relate to non-issuer companies.

NOTE 1 – NATURE OF OPERATIONS AND BASIS OF PRESENTATION

PyraMax Bank, FSB (the “Bank”) is chartered as a federal mutual savings bank. The Bank operates as a full-service financial institution, providing a full range of financial services, including the granting of commercial, residential and consumer loans, and acceptance of deposits from individual customers and small businesses in the metropolitan Milwaukee, Wisconsin area. The Bank is subject to competition from other financial institutions and nonfinancial institutions providing financial products. In addition, the Bank is subject to the regulations of certain regulatory agencies and undergoes periodic examination by those regulatory agencies.

On September 5, 2018, the Board of Directors of the Bank adopted a Plan of Reorganization from a Mutual Savings Bank to a Mutual Holding Company and Stock Issuance Plan (the “Plan”). The Plan has been approved by the Board of Governors of the Federal Reserve System by letter dated October 17, 2018, by the Office of the Comptroller of the Currency by letter dated October 18, 2018, and by the Federal Deposit Insurance Corporation by letter dated October 31, 2018. The Plan must also be approved by the affirmative vote of at least a majority of the total votes eligible to be cast by the voting members of the Bank at a special meeting of members to be held on December 21, 2018. Pursuant to the Plan, the Bank proposes to reorganize into a mutual holding company form of ownership. The Bank will convert to a stock savings bank and issue all of its outstanding stock to a new holding company to be organized under the laws of the United States, which will be named 1895 Bancorp of Wisconsin, Inc (the “Company”). Pursuant to the Plan, the Company will sell stock to the public, with the total offering value and number of shares of common stock based upon an independent appraiser’s valuation. The stock will be priced at $10.00 per share. In addition, the Bank’s Board of Directors will adopt an employee stock ownership plan (the “ESOP”), which will subscribe for up to 3.92% of the common stock of the new holding company to be outstanding upon the completion of the reorganization and stock issuance. the Company will offer 45% of its to-be-outstanding common on a priority basis to the Bank’s eligible members, the ESOP, a charitable foundation and certain other persons. 1895 Bancorp of Wisconsin, MHC will be organized as a mutual holding company under the laws of the United States and will own the remaining 55% of the to-be-outstanding common stock of the Company upon completion of the reorganization and stock issuance.

The costs of the reorganization and the issuing of the common stock will be deferred and deducted from the sales proceeds of the offering. If the conversion is unsuccessful, all deferred costs will be charged to operations. As of September 30, 2018, the Bank had incurred deferred reorganization costs of $413.

The accompanying unaudited interim financial statements and the notes thereto have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”). In the opinion of management, the accompanying unaudited interim financial statements contain all normal recurring adjustments necessary to present fairly the financial positions results of operations, changes in equity and cash flows for the periods presented.

The accompanying unaudited financial statements and related notes should be read in conjunction with the audited annual financial statements and the notes thereto included in the Company’s definitive prospectus, dated November 6, 2018 (the “Prospectus”), as filed with the Securities and Exchange Commission on November 15, 2018.

In preparing financial statements in conformity with GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet, and reported amounts of revenues and expenses during the reporting period. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan and lease losses, the fair values of securities, financial instruments and mortgage servicing rights, and the valuation of deferred income tax assets. Actual results could differ from those estimates.

On April 5, 2012, the Jumpstart Our Business Startups Act (the “JOBS Act”) was signed into law. The JOBS Act contains provisions that, among other things, reduce certain reporting requirements for qualifying public companies and define an “emerging growth company.” As an emerging growth company, the Company may delay adoption of new or revised financial accounting standards until such date that the standards are required to be adopted by non-issuer companies. If such standards would not apply to non-issuer companies, no deferral would be applicable. The Company intends to take advantage of the benefits of the extended transition periods allowed under the JOBS Act.

Accordingly, the Company’s financial statements may not be comparable to those of public companies that adopt new or revised financial accounting standards as of an earlier date. The effective dates of the following recent accounting standards reflect those that relate to non-issuer companies.