{"cik":2084261,"taxonomy":"us-gaap","tag":"EarningsPerShareBasic","label":"Earnings Per Share, Basic","description":"The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.","entityName":"URSB Bancorp, Inc.","units":{"USD/shares":[{"start":"2026-01-01","end":"2026-03-31","val":0.07,"accn":"0001104659-26-062077","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-15","frame":"CY2026Q1"},{"start":"2026-01-01","end":"2026-06-30","val":0.18,"accn":"0001104659-26-096671","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-14"},{"start":"2026-04-01","end":"2026-06-30","val":0.11,"accn":"0001104659-26-096671","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-14","frame":"CY2026Q2"}]}}