Note 9 - Stock Options and Restricted Shares (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding [Table Text Block]

	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)
Outstanding at December 31, 2021		338,500		$	8.40		6.98
Options Granted during 2022:
Options Granted at $2.00 Exercise Price		250,000		$	2.00
Options Granted at $2.40 Exercise Price		90,893		$	2.40
Options Granted at $3.62 Exercise Price		2,762		$	3.62
Options Granted at $9.00 Exercise Price		1,111		$	9.00
Exercised		(50,000	)	$	2.40
Canceled/Forfeited		(25,000	)	$	9.00
Outstanding at December 31, 2022		608,266
Outstanding Options at $2.00 Exercise Price		250,000		$	2.00		9.05
Outstanding Options at $2.40 Exercise Price		90,893		$	2.40		9.05
Outstanding Options at $3.62 Exercise Price		2,762		$	3.62		4.09
Outstanding Options at $9.00 Exercise Price		257,861		$	9.00		7.96
Outstanding Options at $26.20 Exercise Price		6,750		$	9.00		5.30
Outstanding at December 31, 2022		608,266		$	5.30		8.52
Options Granted during 2023:
Options Granted at $2.65 Exercise Price		15,000		$	2.65
Options Granted at $2.10 Exercise Price		588,495		$	2.10
Options expired at $9.00 Exercise Price		(1,111	)	$	9.00
Options expired at $3.62 Exercise Price		(2,762	)	$	3.62
Outstanding at December 31, 2023		1,207,888
Outstanding Options at $2.00 Exercise Price		250,000		$	2.00		8.02
Outstanding Options at $2.40 Exercise Price		90,893		$	2.40		9.05
Outstanding Options at $9.00 Exercise Price		256,750		$	9.00		7.96
Outstanding Options at $26.20 Exercise Price		6,750		$	26.20		5.30
Options Granted at $2.65 Exercise Price		15,000		$	2.65		9.29
Options Granted at $2.10 Exercise Price		588,495		$	2.10		9.53
Outstanding at December 31, 2022		1,207,888		$	3.71		8.53
Exercisable at December 31, 2022		1,196,220		$	3.72		8.52

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

	2023
Risk-free interest rate		3.98	%
Expected volatility		92.1	%
Expected option term (years)		9.8
Expected dividend yield		0	%