Note 21 - Acquisition - Pro Forma Revenue and Earnings (Details) - Merchants Holding Company [Member] - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Net interest income		$ 53,730	$ 52,948
Net income	[1]	$ 14,924	$ 16,313

[1] Net income includes acquisition-related costs for both entities of $1.3 million and $2.2 million for 2018 and 2019, respectively.