{"cik":2065708,"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":"Andersen Group Inc.","units":{"USD/shares":[{"start":"2025-12-18","end":"2025-12-31","val":-0.18,"accn":"0001193125-26-128949","fy":2025,"fp":"FY","form":"10-K","filed":"2026-03-27","frame":"CY2025Q4I"},{"start":"2026-01-01","end":"2026-03-31","val":0.04,"accn":"0001193125-26-219544","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-12","frame":"CY2026Q1"}]}}