Note 14 - Litigation, Commitments, and Contingencies - Off-balance Sheet Financial Instruments (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Commitments to extend credit		$ 270,105	$ 229,408
Standby letters of credit and financial guarantees	[1]	154,610	179,022
Total off-balance sheet risk		424,715	408,430
Allowance for unfunded commitments		$ 678	$ 66

[1] Includes FHLB letters of credit