Note 12 - FHLB Advances and Other Borrowings (Details Textual) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Advance from Federal Home Loan Bank	$ 275	$ 50
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	1,150	1,360
Correspondent Banks [Member]
Federal Funds Corresponding Banks Maximum Amount Available	80	80
Cash Overnight Advance [Member]
Advance from Federal Home Loan Bank	175	$ 50
Three Month Advance Maturing May 2023 [Member]
Advance from Federal Home Loan Bank	$ 100

Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13(3)(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

Reference 2: 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

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22 (b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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