Note 7 - Securities Available for Sale - Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Due one year or less	$ 59,534
Due one year or less, fair value	52,442
Due after one year through five years, amortized cost	170,935
Due after one year through five years, fair value	152,099
Due after five years through fifteen years, amortized cost	51,723
Due after five years through fifteen years, fair value	44,667
Due after fifteen years, amortized cost	4
Due after fifteen years, fair value	4
Total, amortized cost	282,196	$ 287,966
Total, fair value	$ 249,212	$ 285,765