Net Loss Per Share Of Common Stock, Basic And Diluted (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Net loss	$ (1,639,000)	$ (6,169,000)	$ (3,524,000)	$ (5,140,000)	$ (3,648,000)	$ (692,000)	$ (2,912,000)	$ (3,238,000)	$ (16,471,603)	$ (10,490,103)	$ (16,055,591)
Extinguishment upon modification of Series A and A-1 convertible preferred stock									0	0	12,534,438
Net loss attributable to common stockholders									$ (16,471,603)	$ (10,490,103)	$ (3,521,153)
Weighted-average shares of common stock outstanding, basic and diluted									8,830,396	2,226,023	642,052
Weighted-average common shares outstanding	$ (0.18)	$ (0.70)	$ (0.41)	$ (0.59)	$ (0.53)	$ (1.06)	$ (4.48)	$ (4.98)	$ (1.87)	$ (4.71)	$ (5.48)