Note 15 - Stock-based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

			Weighted
	Number		Average
	of		Grant-Date
	Shares		Fair Value
Nonvested at beginning of year		22,350	$	54.96
Granted		-		-
Vested		8,950		51.85
Forfeited		850		56.76
Nonvested at end of year		12,550	$	57.07