{"cik":2065708,"taxonomy":"us-gaap","tag":"NetIncomeLoss","label":"Net Income (Loss) Attributable to Parent","description":"The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.","entityName":"Andersen Group Inc.","units":{"USD":[{"start":"2025-01-01","end":"2025-12-31","val":-2324000,"accn":"0001193125-26-128949","fy":2025,"fp":"FY","form":"10-K","filed":"2026-03-27","frame":"CY2025"},{"start":"2026-01-01","end":"2026-03-31","val":494000,"accn":"0001193125-26-219544","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-12","frame":"CY2026Q1"}]}}