Stock Options (Schedule Of Stock Option Activity) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Options [Abstract]
Shares, Outstanding beginning of year	870,250	1,372,250	1,471,000
Shares, Granted	100,000	75,000	87,500
Shares, Exercised			(105,000)
Shares, Expired/cancelled	(70,000)	(577,000)	(81,250)
Shares, Outstanding end of year	900,250	870,250	1,372,250
Weighted Average Exercise Price, Outstanding beginning of year	$ 0.59	$ 0.61	$ 0.61
Weighted Average Exercise Price, Granted	$ 0.44	$ 0.54	$ 0.85
Weighted Average Exercise Price, Exercised			$ 0.50
Weighted Average Exercise Price, Expired/cancelled	$ 0.63	$ 0.72	$ 1.12
Weighted Average Exercise Price, Outstanding end of year	$ 0.57	$ 0.59	$ 0.61
Excersiable, end of year, Shares	900,250	790,250	1,212,250
Excersiable, end of year, Weighted Average Exercise Price	$ 0.57	$ 0.60	$ 0.62