Note 9 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Noninterest income	$ 2,855	$ 2,614	$ 8,092	$ 7,604
Noninterest income (out-of-scope of Topic 606)	198	413	623	914
Total noninterest income	3,053	3,027	8,715	8,518
Service Charges on Deposit Accounts [Member]
Noninterest income	733	708	2,062	2,015
ATM and Check Card Fees [Member]
Noninterest income	976	915	2,624	2,462
Wealth Management Fees [Member]
Noninterest income	811	739	2,336	2,302
Mortgage Banking [Member]
Noninterest income	38	72	73	224
Participating Life Insurance Contract [Member]
Noninterest income	175	166	459	441
Fees for Other Customer Services [Member]
Noninterest income	$ 122	$ 14	$ 538	$ 160