Note 10 - Acquisition - Pro Forma Revenue and Earnings (Details) - Merchants Holding Company [Member] - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
		Jun. 30, 2019	Jun. 30, 2019
Net interest income		$ 13,495	$ 26,694
Net income	[1]	$ 3,644	$ 5,913

[1] Net income includes acquisition-related costs of $376 thousand and $2.3 million of the three and six months ended June 30, 2019, respectively.