Condensed Consolidated Statements of Stockholders' Equity - USD ($)	Total	Common Stock	Additional paid-in Capital	Accumulated Deficit
Beginning Balance (in shares) at Dec. 31, 2015		1,883,303
Beginning Balance at Dec. 31, 2015	$ 518,344,462	$ 18,833	$ 678,171,322	$ (159,845,693)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(81,133,287)			(81,133,287)
Issuance of shares in connection with the entry into the Second Lien Loan Agreement (in shares)		16,889,828
Issuance of shares in connection with the entry into the Second Lien Loan Agreement	17,756,325	$ 168,899	17,587,426
Issuance of shares for private placement (in shares)		29,333,318
Issuance of shares for private placement	85,700,535	$ 293,333	85,407,202
Reverse stock split adjustment (in shares)		(32)
Vesting of restricted shares, net of shares withheld for employee tax (in shares)		410
Vesting of restricted shares, net of shares withheld for employee tax	(2,938)	$ 4	(2,942)
Stock-based compensation	933,550		933,550
Ending Balance (in shares) at Sep. 30, 2016		48,106,827
Ending Balance at Sep. 30, 2016	541,598,647	$ 481,069	782,096,558	(240,978,980)
Beginning Balance (in shares) at Dec. 31, 2016		48,106,827
Beginning Balance at Dec. 31, 2016	400,482,639	$ 481,069	783,369,698	(383,368,128)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(27,212,260)			(27,212,260)
Issuance of shares for private placement (in shares)		22,222,223
Issuance of shares for private placement	96,030,003	$ 222,222	95,807,781
Vesting of restricted shares, net of shares withheld for employee tax (in shares)		1,094
Vesting of restricted shares, net of shares withheld for employee tax		$ 11	(11)
Stock-based compensation	6,998,960		6,998,960
Ending Balance (in shares) at Sep. 30, 2017		70,330,144
Ending Balance at Sep. 30, 2017	$ 476,299,342	$ 703,302	$ 886,176,428	$ (410,580,388)