Restatements of Previously Issued Condensed Consolidated Financial Statements (Details 1) - USD ($)	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2018	Jun. 30, 2018	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Selling, general and administrative expense	$ 3,514,758	$ 7,548,881	$ 10,873,754	$ 11,350,406	$ 5,747,969
Total operating expenses	3,650,835	7,853,568	11,353,091	12,027,332	6,056,704
Operating loss	(3,398,338)	(7,390,888)	(10,716,488)	(13,813,338)	(6,314,646)
Interest income (expense), net	(1,082,397)	(1,082,097)	(1,085,220)	(1,081,226)	(1,326,160)
Net loss	(4,480,735)	(8,472,985)	(11,801,758)	(18,749,163)	(7,640,806)
Net loss attributable to common stockholders	$ 0	$ (8,789,985)	$ (13,137,659)	$ (20,148,824)	$ (7,640,806)
Net loss per common shares, basic and diluted	$ (4.46)	$ (7.53)	$ (10.41)	$ (14.89)	$ (23.61)
As Reported
Selling, general and administrative expense	$ 3,067,608	$ 7,101,731	$ 10,426,604
Total operating expenses	3,203,685	7,406,418	10,905,941
Operating loss	(2,951,188)	(6,943,738)	(10,269,338)
Interest income (expense), net	(410,253)	(409,953)	(413,076)
Net loss	(3,361,411)	(7,353,691)	(10,682,464)
Net loss attributable to common stockholders	$ 0	$ (7,670,552)	$ (12,018,365)
Net loss per common shares, basic and diluted	$ (3.35)	$ (6.57)	$ (9.52)
Adjustment
Selling, general and administrative expense	$ 447,150	$ 447,150	$ 447,150
Total operating expenses	447,150	447,150	447,150
Operating loss	(447,150)	(447,150)	(447,150)
Interest income (expense), net	(672,144)	(672,144)	(672,144)
Net loss	(1,119,294)	(1,119,294)	(1,119,294)
Net loss attributable to common stockholders	$ 0	$ (1,119,294)	$ (1,119,294)
Net loss per common shares, basic and diluted	$ (1.11)	$ (0.96)	$ (0.89)