Note 6 - Stock-based Compensation Plan (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

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

			Weighted
	Number		Average
	of		Grant Date
	shares		Fair Value
Nonvested at January 1, 2022	22,350	$	54.96
Granted	-		-
Vested	8,950		51.85
Forfeited	850		56.76
Nonvested at September 30, 2022	12,550	$	57.07