Stock Options and Warrants (Summary of Warrants Outstanding by Price Range) (Details) - Warrant [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share Based Compensation Shares Authorized Under Equity Instruments Other Than Options Exercise Price Range [Line Items]
Warrants outstanding exercise price range, lower limit	$ 0.01	$ 0.01
Warrants outstanding exercise price range, upper limit	0.07	0.07
Warrants expired exercise price range, lower limit	0.045	0.06
Warrants expired exercise price range, upper limit	0.06	$ 0.07
Warrants exercisable exercise price range, lower limit	0.01
Warrants exercisable exercise price range, upper limit	$ 0.07
Weighted average remaining contractual life	3 years 8 months 12 days
Number exercisable	721,365
Weighted average exercise price, exercisable	$ 0.021
Warrants exercisable, weighted average remaining contractual life	3 years 8 months 12 days