Note 4 - Earnings Per Common Share - Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net Income	$ 71,043	$ 54,255	$ 52,136
Preferred Stock Dividends	5,401	1,350	0
Net Income Available to Common Shareholders	$ 65,642	$ 52,905	$ 52,136
Weighted Average Common Shares Outstanding (in shares)	25,079,106	22,633,478	20,502,249
Dilutive Effect of Stock Options and Restricted Stock Awards (in shares)	217,094	184,015	132,032
Weighted Average Dilutive Common Shares (in shares)	25,296,200	22,817,493	20,634,281
Basic Earnings Per Common Share From Net Income Available to Common Shares (in dollars per share)	$ 2.62	$ 2.34	$ 2.54
Diluted Earnings Per Common Share From Net Income Available to Common Shares (in dollars per share)	$ 2.59	$ 2.32	$ 2.53