Note 7 - Unpaid Losses and Settlement Expenses - Schedule of Historical Claims Duration (Details)	Dec. 31, 2022
Historical claims duration, year one	37.60%
Historical claims duration, year two	21.70%
Historical claims duration, year three	14.30%
Historical claims duration, year five	6.30%
Historical claims duration, year six	3.70%
Historical claims duration, year eight	1.10%
Historical claims duration, year nine	2.30%
Historical claims duration, year four	11.50%
Historical claims duration, year seven	1.40%
Property Insurance [Member]
Historical claims duration, year one	74.90%
Historical claims duration, year two	22.60%
Historical claims duration, year three	1.80%
Historical claims duration, year four	(0.20%)
Historical claims duration, year five	0.20%
Historical claims duration, year six	0.80%
Historical claims duration, year seven	(0.10%)
Historical claims duration, year eight	0.00%
Historical claims duration, year nine	0.00%
Accident and Health Insurance Product Line [Member]
Historical claims duration, year one	12.70%
Historical claims duration, year two	20.90%
Historical claims duration, year three	22.60%
Historical claims duration, year five	10.60%
Historical claims duration, year six	5.70%
Historical claims duration, year eight	1.70%
Historical claims duration, year nine	3.40%
Historical claims duration, year four	20.10%
Historical claims duration, year seven	2.30%