Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

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

A summary of the Company’s stock option activity and related information for the years ended December 31 follows:

	2016				2015
			Weighted				Weighted
			Avg.				Avg.
			Exercise				Exercise
	Options		Price		Options		Price
Outstanding beginning of the year		261,700	$	8.11		197,419	$	24.37
Granted		-				130,710		7.77
Exercised		-				-
Expired and forfeited		(24,856)		7.96		(66,429)		55.78
Outstanding at end of year		236,844	$	8.14		261,700	$	8.11
Exercisable at end of year		55,066	$	8.54		30,638	$	8.64

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

The aggregate intrinsic value of stock options outstanding and currently exercisable at December 31, 2016 was $-0-.

		As of December 31, 2016
		Options Outstanding						Options Exercisable
Range of		Number		Weighted Avg.		Weighted Avg.		Number		Weighted Avg.		Weighted Avg.
Exercise Prices		Outstanding		Remaining Life		Exercise Price		Exercisable		Remaining Life		Exercise Price
	$ 7.77		114,282		3.17	$	7.77		6,856		3.17	$	7.77
	$ 8.19		26,142		1.17		8.19		-		-		-
	$8.40 - $9.24		96,420		0.04		8.57		48,210		0.04		8.65
	$7.77 - $9.24		236,844		1.68	$	8.14		55,066		0.43	$	8.54

Warrant [Member]

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule Of Share Based Compensation Warrants Activity [Table Text Block]

A summary of the Company’s warrant activity and related information for the years ended December 31 follows:

	2016				2015
			Weighted				Weighted
			Avg.				Avg.
			Exercise				Exercise
	Warrants		Price		Warrants		Price
Outstanding beginning of the year		5,484	$	10.13		4,974	$	12.47
Granted		2,519		4.64		2,183		4.06
Exercised		-				-
Expired		(1,712)		19.67		(1,673)		9.17
Outstanding at end of year		6,291	$	5.34		5,484	$	10.13
Exercisable at end of year		6,291				5,484

Schedule Of Share Based Payment Award Warrants Valuation Assumptions [Table Text Block]

The fair value of the warrants was estimated at the date of grant using a Black-Scholes option pricing model with the following assumptions:

	Year ended December 31
	2016			2015
Expected warrant life (years)		3.0			3.0
Risk-free weighted average interest rate		1.47	%		1.37	%
Stock price volatility		75.9	%		68.2	%
Dividend yield		0.0	%		0.0	%

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

	As of December 31, 2016
	Warrants Outstanding and Exercisable
			Weighted		Weighted
Range of			Avg. Exercise		Avg. Remaining
Exercise Prices	Warrants		Price		Life
$  4.06		2,183	$	4.06		2.00
$  4.64		2,519		4.64		3.00
$  8.19		1,589		8.19		1.00
$4.06 - $8.19		6,291	$	5.34		2.15