Note 7 - Investments, Held to Maturity ("HTM") - Summary of Held to Maturity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Amortized cost, HTM	$ 133,817	$ 135,200
Gross unrealized gains, HTM	991	882
Gross unrealized losses, HTM	(4,258)	(5,180)
HTM, fair value	130,550	130,902
US Treasury and Government [Member]
Amortized cost, HTM	11,984	11,967
Gross unrealized gains, HTM	0	0
Gross unrealized losses, HTM	(21)	(39)
HTM, fair value	11,963	11,928
Collateralized Loan Obligations [Member]
Amortized cost, HTM	12,868	13,202
Gross unrealized gains, HTM	335	333
Gross unrealized losses, HTM	0	0
HTM, fair value	13,203	13,535
Small Business Administration Bonds [Member]
Amortized cost, HTM	7,696	8,168
Gross unrealized gains, HTM	172	145
Gross unrealized losses, HTM	0	0
HTM, fair value	7,868	8,313
Taxable Municipal Bonds [Member]
Amortized cost, HTM	976	973
Gross unrealized gains, HTM	0	0
Gross unrealized losses, HTM	(15)	(20)
HTM, fair value	961	953
Collateralized Mortgage-Backed Securities [Member]
Amortized cost, HTM	100,293	100,890
Gross unrealized gains, HTM	484	404
Gross unrealized losses, HTM	(4,222)	(5,121)
HTM, fair value	$ 96,555	$ 96,173