Note 7 - Unpaid Losses and Settlement Expenses - Schedule of Historical Claims Duration (Details)	Dec. 31, 2023
Historical claims duration, year one	37.40%
Historical claims duration, year two	23.20%
Historical claims duration, year three	13.50%
Historical claims duration, year five	5.80%
Historical claims duration, year six	4.30%
Historical claims duration, year eight	1.10%
Historical claims duration, year nine	(2.20%)
Historical claims duration, year four	11.30%
Historical claims duration, year seven	1.30%
Historical claims duration, year nine	2.20%
Property Insurance [Member]
Historical claims duration, year one	75.90%
Historical claims duration, year two	21.90%
Historical claims duration, year three	1.80%
Historical claims duration, year four	(0.40%)
Historical claims duration, year five	0.30%
Historical claims duration, year six	0.70%
Historical claims duration, year seven	(0.20%)
Historical claims duration, year eight	0.00%
Historical claims duration, year nine	(0.10%)
Historical claims duration, year nine	0.10%
Accident and Health Insurance Product Line [Member]
Historical claims duration, year one	12.30%
Historical claims duration, year two	22.70%
Historical claims duration, year three	21.80%
Historical claims duration, year five	10.00%
Historical claims duration, year six	6.80%
Historical claims duration, year eight	1.70%
Historical claims duration, year nine	(3.30%)
Historical claims duration, year four	19.40%
Historical claims duration, year seven	2.10%
Historical claims duration, year nine	3.30%