Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Options, Outstanding (in shares)	2,165,000	2,130,000	3,898,198
Options Outstanding, Weighted Average Remaining Life (years)	3 years 11 months 1 day
Options Outstanding, Weighted Average Exercise Price	$ 1.71	$ 1.75	$ 1.75
Number Exercisable	1,330,000	930,000
Number Exercisable, Weighted Average Remaining Life (years)	3 years 6 months 22 days
Number Exercisable, Weighted Average Exercise Price	$ 1.75	$ 1.69
Exercise Price $0.08 to $0.15 [Member]
Options, Outstanding (in shares)	80,000
Options Outstanding, Weighted Average Remaining Life (years)	1 year 9 months
Options Outstanding, Weighted Average Exercise Price	$ 0.12
Number Exercisable	80,000
Number Exercisable, Weighted Average Remaining Life (years)	1 year 9 months
Number Exercisable, Weighted Average Exercise Price	$ 0.12
Exercise Price $0.69 to $1.00 [Member]
Options, Outstanding (in shares)	380,000
Options Outstanding, Weighted Average Remaining Life (years)	4 years 9 months 7 days
Options Outstanding, Weighted Average Exercise Price	$ 0.93
Number Exercisable	120,000
Number Exercisable, Weighted Average Remaining Life (years)	3 years 25 days
Number Exercisable, Weighted Average Exercise Price	$ 0.95
Exercise Price $1.83 to $2.00 [Member]
Options, Outstanding (in shares)	1,705,000
Options Outstanding, Weighted Average Remaining Life (years)	3 years 9 months 29 days
Options Outstanding, Weighted Average Exercise Price	$ 1.97
Number Exercisable	1,130,000
Number Exercisable, Weighted Average Remaining Life (years)	3 years 8 months 26 days
Number Exercisable, Weighted Average Exercise Price	$ 1.95