Note 18 - Statutory Financial Information (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statutory Accounting Practices, Statutory Capital and Surplus, Balance	$ 439,264	$ 314,508	$ 271,977
Statutory Accounting Practices, Statutory Net Income Amount	97,391	76,222	51,410
Equity, Attributable to Parent	471,252	384,754
BERMUDA
Minimum Statutory Solvency Margin	1,200	1,200
Statutory Accounting Practices, Statutory Capital and Surplus, Balance	16,100	15,600
Statutory Accounting Practices, Statutory Net Income Amount	300	200	$ 1,400
Equity, Attributable to Parent	16,300	$ 15,500
Dividends Received from Subsidiary	$ 0
BERMUDA | Minimum [Member]
Liquidity Ratio	75.00%