Note 20 - Litigation, Commitments, and Contingencies - Off-balance Sheet Financial Instruments (Details) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Commitments to extend credit		$ 229,408	$ 228,716
Standby letters of credit and financial guarantees(1)	[1]	179,022	167,612
Total off-balance sheet risk		408,430	396,328
Reserve for unfunded commitments		$ 66	$ 66

[1] Includes FHLB letters of credit