Organization and Description of Business (Details Textual) - USD ($)	3 Months Ended		9 Months Ended		116 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Organization and Description of Business [Line Items]
Net Loss	$ (2,472,000)	$ (3,846,000)	$ (7,087,000)	$ (8,866,000)	$ 47,418,000
Cash and Cash Equivalents, at Carrying Value, Total	$ 3,511,000	$ 3,558,000	$ 3,511,000	$ 3,558,000	$ 3,511,000	$ 1,259,000	$ 10,985,000