Stock Option Plans (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]

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

The following tables summarize information about stock options outstanding for the years ended December 31, 2016 and 2015:

			Weighted-				Weighted-
	2005		Average		2005		Average
	Employee		Exercise		Director		Exercise
	Plan (#)		Price ($)		Plan (#)		Price ($)
Shares under option:
Options outstanding at January 1, 2015		1,690	$	1.70		349	$	1.27
Granted		250		0.40		59		0.95
Exercised		-		-		-		-
Forfeited		(476)		1.20		-		-
Options outstanding at December 31, 2015		1,464	$	1.33		408	$	1.22
Granted		100		0.62		-		-
Exercised		-		-		-		-
Forfeited		(93)		1.73		(20)		1.91
Options outstanding at December 31, 2016		1,471	$	1.08		388	$	1.19
Options exercisable at December 31, 2016		937	$	1.25		388	$	1.19
Weighted-average fair value of options granted during:
2016	$	0.01				-
2015	$	0.02			$	0.02

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

Total options available for grant under all Plans were 1,714 and 852 at December 31, 2016 and December 31, 2015, respectively.

	Options Outstanding						Options Exercisable
Range of Exercise Prices ($)	Number of Options Outstanding at 12/31/16		Weighted- Average Remaining Contractual Life in Years		Weighted- Average Exercise Price ($)		Number Exercisable at 12/31/16		Weighted- Average Exercise Price ($)
2005 Employee Plan: 0.40 to 1.33		1,471		6.0	$	1.07		1,187	$	1.07
2005 Director Plan: 0.76 to 1.98		388		4.9	$	1.19		388	$	1.19

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

Restricted stock issued to employees and directors during the years ended December 31, 2016 and 2015, respectively is as follows:

	December 31, 2016				December 31, 2015
							Weighted-
			Weighted-				Average
			Average Grant				Grant Date
	Number of		Date Fair Value		Number of		Fair Value
	shares		per Share		shares		per Share
Non-vested, beginning of period		322	$	0.68		-	$	-
Granted		705		0.62		502		0.58
Vested		128		0.70		180		0.40
Non-vested, end of period		899	$	0.68		322	$	0.68

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

The following tables summarize total stock-based compensation costs recognized for the years ended December 31, 2016 and 2015:

	For the Years Ended December 31,
	2016		2015
Stock options	$	69	$	100
Restricted stock awards		140		116
Total	$	209	$	216

Stock based compensation expense was reflected within the statements of operations as:

	For the Years Ended December 31,
	2016		2015
Cost of goods sold	$	31	$	34
Selling expenses		30		81
General and administrative		113		67
Research and development		35		34
Total	$	209	$	216