Stock Options (Schedule Of Stock Options Outstanding And Exercisable) (Details) (USD $)					12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2012 $0.57 [Member]	Dec. 31, 2012 $1.44 [Member]	Dec. 31, 2012 $0.70 [Member]	Dec. 31, 2012 $0.50 [Member]	Dec. 31, 2012 $0.43 [Member]	Dec. 31, 2012 $0.44 [Member]	Dec. 31, 2012 $1.08 [Member]	Dec. 31, 2012 $1.16 [Member]	Dec. 31, 2012 $0.84 [Member]	Dec. 31, 2012 $0.72 [Member]	Dec. 31, 2012 $0.75 [Member]	Dec. 31, 2012 $1.07 [Member]	Dec. 31, 2012 $0.81 [Member]	Dec. 31, 2012 $0.73 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Price	$ 0.61	$ 0.61	$ 0.60	$ 0.42	$ 0.57	$ 1.44	$ 0.70	$ 0.50	$ 0.43	$ 0.44	$ 1.08	$ 1.16	$ 0.84	$ 0.72	$ 0.75	$ 1.07	$ 0.81	$ 0.73
Options Outstanding	1,372,250	1,471,000	1,571,000	3,021,000	400,000	50,000	50,000	400,000	50,000	241,000	50,000	18,750	18,750	18,750	18,750	18,750	18,750	18,750
Weighted Average Remaining Contractual Life					1 month 6 days	4 months 24 days	1 year	2 years 9 months 18 days	2 years 1 month 6 days	2 years 8 months 12 days	3 years 3 months 18 days	3 years 3 months 18 days	3 years 6 months	3 years 9 months 18 days	4 years	4 years 2 months 12 days	4 years 6 months	4 years 8 months 12 days
Options Exercisable	1,212,250				400,000	50,000	50,000	240,000	50,000	241,000	50,000	18,750	18,750	18,750	18,750	18,750	18,750	18,750