Consolidated Statements of Stockholders' Deficit - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Treasury Stock	Additional Paid-in capital	Accumulated Deficit	Private placement offering	Private placement offering Common Stock	Private placement offering Additional Paid-in capital	Related party	Related party Common Stock	Related party Additional Paid-in capital
Beginning balance at Dec. 31, 2015	$ (53,345)	$ 0	$ 0	$ 0	$ 324,527	$ (377,872)
Beginning balance, shares at Dec. 31, 2015		0	203,967	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	3,499				3,499
Issuance of common stock as a result of the exercise of warrants by related party										$ 8,933		$ 8,933
Issuance of common stock as a result of the exercise of warrants by related party, shares											175,934
Issuance of common stock, net of expense							$ 23,698	$ 1	$ 23,697	5,819		5,819
Issuance of common stock, shares								634,858			138,826
Conversion of accrued interest to Common Stock by related parties										$ 17,934	$ 1	$ 17,933
Conversion of accrued interest to Common Stock by related parties, shares											306,270
Recapitalization for reverse merger, shares			125,000
Shares issued for restricted stock compensation	293				293
Shares issued for restricted stock compensation, shares			6,093
Cancellation of warrants previously classified as derivative liabilities	3,036				3,036
Treasury Shares	0
Net loss	(46,367)					(46,367)
Ending balances at Dec. 31, 2016	(36,500)	$ 0	$ 2	$ 0	387,737	(424,239)
Ending balances, shares at Dec. 31, 2016		0	1,590,948	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	5,510				5,510
Issuance of common stock, net of expense	48,786		$ 5		48,781
Issuance of common stock, shares			5,250,000
Issuance of common stock for compensation	73				73
Issuance of common stock for compensation, shares			2,030
Issuance of preferred stock upon conversion of debt, net of discount	27,398	$ 3			27,395
Issuance of preferred stock upon conversion of debt, net of discount, shares		2,750,000
Commitment fee for Purchase Agreement	0
Commitment fee for Purchase Agreement, shares			125,000
Restricted shares vested, shares			47,658
Cancellation of warrants previously classified as derivative liabilities	0
Treasury Shares	(24)			$ (24)
Treasury Shares, shares			(7,854)	(7,854,000)
Net loss	(49,301)					(49,301)
Ending balances at Dec. 31, 2017	$ (4,058)	$ 3	$ 7	$ (24)	$ 469,877	$ (473,921)
Ending balances, shares at Dec. 31, 2017		2,750,000	7,007,782	7,854,000