Note 5 - Deposits (Details Textual) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Deposit Liability, Uninsured	$ 122.8	$ 115.5
Related Party Deposit Liabilities	$ 7.6	$ 9.2

Amount of deposits held by the entity for a related party (entity, shareholder, employee).

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(k)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

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