Note 5 - Reinsurance (Details Textual)	12 Months Ended
Dec. 31, 2023 USD ($)
Casualty Business [Member] \| Maximum [Member]
Reinsurance, Amount Retained, Per Life	$ 1,000,000
Property [Member]
Reinsurance Maximum Individual Risk	$ 1,000,000

Amount per life of risk undertaken originally by insurer that is not ceded to reinsurer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479838/944-20-50-3

Name:	us-gaap_ReinsuranceRetentionAmountRetainedPerLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration