{"cik":2114521,"taxonomy":"us-gaap","tag":"DeferredIncomeTaxAssetsNet","label":"Deferred Income Tax Assets, Net","description":"Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.","entityName":"CSB Financial Inc.","units":{"USD":[{"end":"2025-12-31","val":518381,"accn":"0001104659-26-078754","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-06-29","frame":"CY2025Q4I"},{"end":"2026-03-31","val":514539,"accn":"0001104659-26-078754","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-06-29","frame":"CY2026Q1I"}]}}