v3.19.3

Summary of Significant Accounting Principles - Adjustment (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Warrant liability	$ 15,876,415		$ 15,876,415			$ 1,822,819
Additional paid-in capital	140,527,364		140,527,364			126,076,782
Accumulated deficit	(167,968,075)		(167,968,075)			(141,557,496)
Total shareholders' deficit	(27,374,629)	$ (5,155,869)	(27,374,629)	$ (5,155,869)	$ (17,995,810)	$ (15,422,443)	$ (1,559,334)	$ 3,511,564
Interest expense, net	15,922,763	526,162	17,700,346	1,052,049
Net loss	(20,060,200)	(6,909,297)	(26,324,372)	(13,327,103)
Net loss attributable to common stockholders	$ (20,146,407)	$ (7,674,476)	$ (26,410,579)	$ (14,092,282)
Basic and diluted earnings per share (in usd per share)	$ (0.33)	$ (0.18)	$ (0.44)	$ (0.33)
Change in fair value of warrants			$ 14,910,668	$ 0
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Warrant liability	$ 33,529,599		33,529,599
Additional paid-in capital	139,670,292		139,670,292
Accumulated deficit	(184,764,188)		(184,764,188)
Total shareholders' deficit	(45,027,814)		(45,027,814)
Interest expense, net	32,718,876		34,496,459
Net loss	(36,856,313)		(43,120,485)
Net loss attributable to common stockholders	$ (36,942,520)		$ (43,206,692)
Basic and diluted earnings per share (in usd per share)	$ (0.61)		$ (0.71)
Change in fair value of warrants			$ 31,706,780
Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Warrant liability	$ (17,653,184)		(17,653,184)
Additional paid-in capital	857,072		857,072
Accumulated deficit	16,796,113		16,796,113
Total shareholders' deficit	17,653,185		17,653,185
Interest expense, net	(16,796,113)		(16,796,113)
Net loss	16,796,113		16,796,113
Net loss attributable to common stockholders	$ 16,796,113		$ 16,796,113
Basic and diluted earnings per share (in usd per share)	$ 0.28		$ 0.28
Change in fair value of warrants			$ (16,796,112)

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Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.

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