Note 11 - Commitments and Contingent Liabilities (Details Textual) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Investments	$ 8,898,409	$ 4,722,137
Lessee, Operating Lease, Liability, to be Paid, Year One	$ 0	$ 47,000
Private Investment Fund [Member]
Other Investments			$ 10,000,000

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-6

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant