Note 8 - Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2023			2022
Stock option fair value assumptions:
Risk-free interest rate		3.45 - 4.34	%		2.00 - 4.24	%
Expected life (years)		6.5			6.5
Dividend yield		0	%		0	%
Expected volatility		60	%		60	%
Weighted average grant date fair value of stock options granted	$	5.73		$	6.67

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, 2022		387,500		$	4.57
Granted		94,000			11.18
Exercised		(19,800	)		3.40
Forfeited		(9,000	)		4.19
Outstanding – December 31, 2022		452,700		$	5.97		6.87	$	2,855
Granted		94,000			9.36
Exercised		(39,044	)		4.09
Forfeited		(48,956	)		7.77
Outstanding – December 31, 2023		458,700		$	6.63		6.53	$	1,432
Exercisable on December 31, 2023		245,200		$	4.51		4.94	$	1,235