Note 10 - Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Shares			Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value
Outstanding – January 1, 2021		362,640		$	3.96
Granted		49,000			8.50
Exercised		(13,400	)		3.43
Cancelled		(10,740	)		3.42
Outstanding – December 31, 2021		387,500		$	4.57		7.17	$	1,225
Granted		94,000			11.18
Exercised		(19,800	)		3.40
Cancelled		(9,000	)		4.19
Outstanding – December 31, 2022		452,700		$	5.97		6.87	$	2,855
Exercisable on December 31, 2022		223,300		$	4.11		5.76	$	1,817