Note 20 - Revenue Recognition - Noninterest Income (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Noninterest income (in-scope of Topic 606)		$ 2,995	$ 3,603
Noninterest income (out-of-scope of Topic 606)		1,368	788
Total noninterest income		4,363	4,391
Maintenance Fees [Member]
Noninterest income (in-scope of Topic 606)		203	190
Overdraft Fees [Member]
Noninterest income (in-scope of Topic 606)		1,044	1,657
Other Fees [Member]
Noninterest income (in-scope of Topic 606)		251	310
Electronic Banking Fees [Member]
Noninterest income (in-scope of Topic 606)	[1]	$ 1,497	$ 1,446

[1] included in other noninterest income on the Consolidated Statements of Net Income