Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

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Summary of Significant Accounting Policies (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Summary of Significant Accounting Policies [Abstract]        
Net loss $ (3,210,000) $ (2,185,000) $ (6,461,000) $ (6,033,000)
Weighted average number of common shares outstanding:        
Basic and diluted 4,063,660 3,708,782 4,007,953 3,400,711
Net loss attributable to common stockholders per share:        
Basic and diluted $ (0.79) $ (0.59) $ (1.61) $ (1.84)