{"cik":2055116,"taxonomy":"us-gaap","tag":"ShareBasedCompensation","label":"Share-based Payment Arrangement, Noncash Expense","description":"Amount of noncash expense for share-based payment arrangement.","entityName":"Kestrel Group Ltd","units":{"USD":[{"start":"2025-01-01","end":"2025-03-31","val":15000,"accn":"0001628280-26-032898","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-08","frame":"CY2025Q1"},{"start":"2026-01-01","end":"2026-03-31","val":1449000,"accn":"0001628280-26-032898","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-08","frame":"CY2026Q1"}]}}