Stock Options, Warrants and 401(k) Savings Plan (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under plan	2,000,000
Compensation expense from options not yet recognized
Employer contributions for 401(k) savings plan charged to expense during period
Stock option compensation expense recognized
Number of common shares reserved for possible future warrant issuance and debt conversion	6,343,989
Value of outstanding convertible debentures and accrued interest that could be converted	$ 128,300
Number of common shares reserved for possible future debt conversion	5,622,624
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants expiration date	2021-07