Note 20 - Derivative Financial Instruments (Details Textual) - USD ($) $ in Millions	Sep. 30, 2023	Aug. 07, 2023	Feb. 06, 2023	Dec. 31, 2022
Advance from Federal Home Loan Bank	$ 350			$ 50
Three Month Advance Maturing May 2023 [Member]
Advance from Federal Home Loan Bank	$ 200	$ 50	$ 100

Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 470
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480876/942-470-45-1

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