Note 19 - Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 15,899	$ 13,390
Investment securities:
Available-for-sale (amortized cost $649,217 and $697,094)	546,525	692,360
Equity securities (cost of $12,091 and $11,419)	12,056	12,410
Other assets	4,767	3,975
Total assets	1,668,497	1,673,340
Liabilities
Other liabilities	7,376	8,414
Shareholders' equity	70,958	136,494	$ 134,445	$ 120,717
Total liabilities and shareholders' equity	1,668,497	1,673,340
Parent Company [Member]
Assets
Cash and cash equivalents	353	1,234
Investment securities:
Available-for-sale (amortized cost $649,217 and $697,094)	301
Equity securities (cost of $12,091 and $11,419)	12,056	12,410
Investment in subsidiary	58,140	123,412
Other assets	146	8
Total assets	70,996	137,064
Liabilities
Other liabilities	38	570
Shareholders' equity	70,958	136,494
Total liabilities and shareholders' equity	$ 70,996	$ 137,064