Note 7 - Segment Information - Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Net interest income	$ 10,004	$ 11,387
Provision expense	3,846	2,377
Noninterest income	4,442	1,846
Noninterest expense	9,519	9,568
Tax expense	79	95
Net income	1,002	1,193
Assets	1,035,841	1,044,873	$ 1,013,272
Banking [Member]
Net interest income	9,471	10,037
Provision expense	3,845	2,250
Noninterest income	3,487	1,819
Noninterest expense	8,766	8,820
Tax expense	(75)	(10)
Net income	422	796
Assets	1,024,169	1,033,203
Consumer Finance [Member]
Net interest income	533	1,350
Provision expense	1	127
Noninterest income	955	27
Noninterest expense	753	748
Tax expense	154	105
Net income	580	397
Assets	$ 11,672	$ 11,670