Note 1 - Nature of Operations and Critical Accounting Policies (Details Textual) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2022
Goodwill, Impairment Loss	$ 0	$ 0
Executive Officer [Member]
Number of Individuals with Split Dollar Life Insurance Arrangement	4		4

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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