Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2020

Stockholders' Equity Note [Abstract]

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

The following is a summary of the warrant activity for the years ended December 31, 2020:

	Number of  Warrants			Average  Exercise Price		Weighted Average Remaining Contractual Term in Years
Outstanding at January 1, 2020		171,667		$	13.55		0.92
Exercisable at January 1, 2020		171,667		$	13.55		0.92
Granted		-			-		-
Exercised / surrendered		-			-		-
Expired		(171,667	)		13.55		-
Outstanding at December 31, 2020		-		$	-		-
Exercisable at December 31, 2020		-		$	-		-

Share-based Payment Arrangement, Option, 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, 2020		340,500	$	5.97	$	-		3.33
Exercisable at January 1, 2020		292,000		6.48	$	-		3.08
Granted		-		-		-		-
Exercised		-		-		-		-
Forfeited		-		-		-		-
Outstanding at December 31, 2020		340,500	$	5.97	$	-		2.33
Exercisable at December 31, 2020		340,500	$	5.97	$	-		2.33

(1) The intrinsic value of the stock options at December 31, 2020 is the amount by which the market value of the Company’s common stock of $2.38 as of December 31, 2020 exceeds the exercise price of the option.