Stock Option Plans (Details 1) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Plan 2005 [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options Outstanding, Number	1,471
Options Outstanding, Weighted-Average Remaining Contractual Life in Years	6 years
Options Outstanding, Weighted-Average Exercise Price	$ 1.08	$ 1.33	$ 1.7
Options Exercisable, Number	1,187
Options Exercisable, Weighted-Average Exercise Price	$ 1.07
Exercise Price Range, Lower Range Limit	0.40
Exercise Price Range, Upper Range Limit	$ 1.33
Director Plan 2005 [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options Outstanding, Number	388
Options Outstanding, Weighted-Average Remaining Contractual Life in Years	4 years 10 months 24 days
Options Outstanding, Weighted-Average Exercise Price	$ 1.19	$ 1.22	$ 1.27
Options Exercisable, Number	388
Options Exercisable, Weighted-Average Exercise Price	$ 1.19
Exercise Price Range, Lower Range Limit	0.76
Exercise Price Range, Upper Range Limit	$ 1.98