Note 2 - Mergers and Acquisitions - Pro Forma Information (Details) - WHC [Member] - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	9 Months Ended
		Sep. 30, 2019	Sep. 30, 2019
Net interest income after loan loss provision	[1]	$ 9,720	$ 28,918
Noninterest income	[1]	8,709	18,484
Noninterest expense	[1]	12,913	35,785
Income before provision for income taxes	[1]	5,516	11,617
Income tax provision	[1]	1,103	2,323
Net income	[1]	$ 4,413	$ 9,294
Basic earnings per share (in dollars per share)	[1]	$ 0.69	$ 1.45
Diluted earnings per share (in dollars per share)	[1]	$ 0.68	$ 1.44
Basic weighted average shares outstanding (in shares)		6,403,693	6,420,711
Diluted weighted average shares outstanding (in shares)		6,425,380	6,442,934

[1] Significant assumptions utilized include the acquisition cost noted above and a 20.00% effective tax rate.