Stock Options and Warrants (Summary of Warrants Outstanding by Price Range) (Details)	6 Months Ended
	Jun. 30, 2018 $ / shares shares
Share Based Compensation Shares Authorized Under Equity Instruments Other Than Options Exercise Price Range [Line Items]
Number outstanding | shares	821,412
Remaining Average Contractual Life	1 year 9 months 18 days
Weighted average exercise price, outstanding | $ / shares	$ 0.17
Range of Exercise Price [Member]
Share Based Compensation Shares Authorized Under Equity Instruments Other Than Options Exercise Price Range [Line Items]
Number outstanding | shares	821,412
Remaining Average Contractual Life	1 year 9 months 18 days
Weighted average exercise price, outstanding | $ / shares	$ 0.17