Stockholders' Equity (Reconciliation of Transactions Under ATM Agreement) (Details) - USD ($)	1 Months Ended	9 Months Ended		12 Months Ended
	Aug. 31, 2017	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Class of Stock [Line Items]
Number of shares sold (in shares)	2,513,021
Net proceeds		$ 5,861,203	$ 4,180,944
ATM Agreement
Class of Stock [Line Items]
Number of shares sold (in shares)		35,206,738		1,835,300
Gross proceeds		$ 5,861,203		$ 522,889
Fees		216,116		14,090
Net proceeds		$ 5,645,087		$ 508,799
Average price per share (in dollars per share)		$ 0.17		$ 0.28