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Note 10 - Stockholders’ Equity (Tables)

3 Months Ended

Mar. 31, 2018

Stockholders' Equity Note [Abstract]

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

Following is a summary of the warrant activity for the three months ended March 31, 2018:

		Number of Warrants				Average Exercise Price				Weighted Average Remaining Contractual Term in Years
Outstanding at January 1, 2018			858,334			$	2.71				2.92
Exercisable at January 1, 2018			858,334				2.71				2.92
Granted			-				-				-
Exercised / surrendered			-				-				-
Expired			-				-				-
Outstanding at December 31, 2017			858,334			$	2.71				2.67
Exercisable at December 31, 2017			858,334			$	2.71				2.67

Share-based Compensation, Stock Options, Activity [Table Text Block]

Stock option activity under the Company’s stock-based compensation plans is shown below:

		Number of Shares				Average Exercise Price per Share				Aggregate Intrinsic Value(1)				Weighted Average Remaining Contractual Term in Years
Outstanding at January 1, 2018			1,072,000				1.37			$	1,309,425				4.67
Exercisable at January 1, 2018			532,500				1.37			$	649,725				4.67
Granted
Exercised			(15,000	)			1.26								-
Forfeited			-				-								-
Outstanding at March 31, 2018			1,057,500			$	1.37			$	834,750			$	4.44
Exercisable at March 31, 2018			982,500			$	1.35			$	796,500			$	4.43

(1) The intrinsic value of the stock options at March 31, 2018 is the amount by which the market value of the Company’s common stock of $2.16 as of March 31, 2018 exceeds the exercise price of the option.

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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Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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