Net Loss Per Share (Computation of Basic and Diluted Net Loss Per Share) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies [Abstract]
Net loss	$ (19,479,000)	$ (16,702,000)
Net loss basic	(19,479,000)	(16,702,000)
Change in fair value of derivative liabilities, net of interest	(938,000)
Net loss, diluted	$ (20,417,000)	$ (16,702,000)
Weighted average shares outstanding, basic	7,827,197	4,652,777
Net loss per share, basic	$ (2.49)	$ (3.59)
Weighted average shares outstanding, diluted	8,009,909	4,652,777
Net loss per share, diluted	$ (2.55)	$ (3.59)