Stock Option Plans (Tables)

12 Months Ended

Dec. 31, 2018

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Nonvested Share Activity [Table Text Block]

Information related to the weighted average fair value of nonvested stock options for the year ended December 31, 2018 is as follows:

	Stock Options			Weighted Average  Exercise Price
Employee Stock Options
Nonvested  options at January 1, 2018		77,618		$	2.64
Granted		41,719			1.25
Vested		(52,384	)		3.51
Nonvested options at December 31, 2018		66,953		$	1.10

Schedule Of BlackScholes Option Valuation In Weighted Average Assumptions [Table Text Block]

The weighted average fair value at date of grant for options granted during 2018 was $1.25, and was established using the Black-Scholes option valuation method with the following weighted average assumptions:

Expected life in years	5.0
Interest rate	2.7	%
Volatility	62.3	%
Dividend yield	0	%

Employee Stock Option [Member] | Series B Preferred Stock [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

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

The cumulative status at December 31, 2018 and 2017, of options granted and outstanding, as well as options which became exercisable in connection with the Stock Option Plans is summarized as follows:

Employee Stock Options

	Stock Options			Weighted Average Exercise  Price		Weighted  Average  Contractual  Term (yrs)		Aggregate  Intrinsic Value
Outstanding at January 1, 2017		397,671		$	4.39
Exercised		(16,224	)		0.84
Outstanding at December 31, 2017		381,447		$	4.54
Granted		41,719			1.25
Exercised		(21,225	)		0.84
Expired		(5,000	)		3.10
Outstanding at December 31, 2018		396,941		$	4.41		2.2	$	-
Options exercisable at December 31, 2018		329,988		$	5.09		1.0	$	-
Options exercisable at December 31, 2017		303,829		$	5.03		2.0	$	-
Options expected to vest		66,953		$	1.10		8.0	$	-