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Note 12 - Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2025

Notes Tables

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

										Non-qualified				Weighted Average				Aggregate
		2010 Plan				2017 Plan				Stock Options				Exercise Price				Intrinsic Value(1)
Outstanding as of December 31, 2023			188,500				430,000				—			$	6.82			$	(1,071,121	)
Grants			—				86,000				—			$	3.91
Terminations/forfeitures(2)			(5,000	)			(35,500	)			—			$	6.55
Exercises			—				—				—			$	—
Outstanding as of December 31, 2024			183,500				480,500				—			$	6.46			$	(870,558	)
Grants			—				132,000				75,983			$	5.67
Terminations/forfeitures(2)			(38,000	)			(80,500	)			—			$	6.72
Exercises			—				(15,000	)			—			$	4.81
Outstanding as of September 30, 2025			145,500				517,000				75,983			$	6.23			$	14,200
Vested as of September 30, 2025			145,500				176,000				—			$	7.39			$	(365,817	)
Vested and expected to vest as of September 30, 2025			145,500				517,000				75,983			$	6.23			$	14,200
Reserved for future grants			—				100,000				—

						Weighted Average
						Fair Value at				Weighted Average
		Number of Shares				Grant Date				Exercise Price
Non-vested stock options outstanding as of September 30, 2025			416,983			$	2.76			$	5.34
Non-vested stock options outstanding as of December 31, 2024			344,000			$	3.12			$	6.25
Stock options granted during the nine-month period ended September 30, 2025			207,983			$	3.02			$	5.67
Stock options that vested during the nine-month period ended September 30, 2025			107,000			$	4.36			$	8.07
Stock options that were terminated or forfeited during the nine-month period ended September 30, 2025			118,500			$	3.68			$	6.72

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

		During the Three-Month								During the Nine-Month
		Periods Ended September 30,								Periods Ended September 30,
		2025				2024				2025				2024
Risk-free interest rate(1)			3.70	%			3.48	%			3.82	%			3.70	%
Dividend yield(2)			0	%			0	%			0	%			0	%
Expected volatility(2)			55	%			52	%			53	%			51	%
Expected life in years(3)			6.1				4.1				5.7				4.3

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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