{"cik":2042347,"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":"Seaport Therapeutics, Inc.","units":{"USD/shares":[{"start":"2025-01-01","end":"2025-03-31","val":-5.65,"accn":"0001193125-26-260678","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-06-08","frame":"CY2025Q1"},{"start":"2025-01-01","end":"2025-06-30","val":-12.05,"accn":"0001193125-26-329537","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-03"},{"start":"2025-04-01","end":"2025-06-30","val":-6.4,"accn":"0001193125-26-329537","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-03","frame":"CY2025Q2"},{"start":"2026-01-01","end":"2026-03-31","val":-10.34,"accn":"0001193125-26-260678","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-06-08","frame":"CY2026Q1"},{"start":"2026-01-01","end":"2026-06-30","val":-4.6,"accn":"0001193125-26-329537","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-03"},{"start":"2026-04-01","end":"2026-06-30","val":-1.78,"accn":"0001193125-26-329537","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-03","frame":"CY2026Q2"}]}}