Note 15 - Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Year Ended December 31,
	2022				2021				2020
			Per Share				Per Share				Per Share
	Shares		Amount		Shares		Amount		Shares		Amount
Basic earnings per share		10,672,314	$	3.23		10,873,817	$	4.00		10,981,623	$	2.74
Effect of dilutive securities - stock options		2,299		—		3,414		—		4,167		(0.01	)
Diluted earnings per share		10,674,613	$	3.23		10,877,231	$	4.00		10,985,790	$	2.73