Note 5 - Fair Value Measurements - Assets Measured on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Impaired loans	$ 22,428	$ 7,969
Fair Value, Nonrecurring [Member]
Other real estate owned	6,792
Impaired loans		4,162
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Other real estate owned	0
Impaired loans		0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Other real estate owned	0
Impaired loans		0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Other real estate owned	$ 6,792
Impaired loans		$ 4,162