Note 2 - Investments, Available for Sale ("AFS") - Schedule of Available-for-Sale Securities Reconciliation (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Amortized cost, AFS	$ 567,029	$ 584,287
Gross unrealized gains, AFS	800	1,162
Gross unrealized losses, AFS	(42,206)	(47,809)
Fair value, AFS	525,623	537,640
Collateralized Loan Obligations [Member]
Amortized cost, AFS	39,670	51,022
Gross unrealized gains, AFS	117	72
Gross unrealized losses, AFS	(203)	(728)
Fair value, AFS	39,584	50,366
Small Business Administration Bonds [Member]
Amortized cost, AFS	66,491	79,014
Gross unrealized gains, AFS	337	416
Gross unrealized losses, AFS	(2,402)	(2,677)
Fair value, AFS	64,426	76,753
US States and Political Subdivisions Debt Securities [Member]
Amortized cost, AFS	6,746	21,501
Gross unrealized gains, AFS	0	643
Gross unrealized losses, AFS	(688)	(908)
Fair value, AFS	6,058	21,236
Taxable Municipal Bonds [Member]
Amortized cost, AFS	64,530	64,669
Gross unrealized gains, AFS	0	0
Gross unrealized losses, AFS	(11,970)	(11,554)
Fair value, AFS	52,560	53,115
Collateralized Mortgage-Backed Securities [Member]
Amortized cost, AFS	389,592	368,081
Gross unrealized gains, AFS	346	31
Gross unrealized losses, AFS	(26,943)	(31,942)
Fair value, AFS	$ 362,995	$ 336,170