Restatement of Prior Period Financial Statements - Schedule of Revisions to Comprehensive Loss (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other income (expense):
Interest expense, net	$ (93)	$ (458)	$ (260)	$ (1,541)
Gain on bifurcated derivative liability	0	0	0	2,754
Amortization of debt discount	0	10,780	194	12,410
Gain (loss) on change in fair value of liability-classified warrants	738	(705)	404	883
Other (expense) income, net	(149)	196	(67)	824
Total other income (expense)	1,301	(11,747)	688	(9,490)
Income (loss) from continuing operations before income taxes	(479)	(12,695)	(3,793)	(16,808)
Net loss	(360)	(12,582)	(3,842)	(15,576)
Comprehensive loss	$ (231)	(12,772)	$ (3,492)	(16,036)
Kanis S.A
Other income (expense):
Amortization of debt discount		1,600		200
Kanis S.A | Reported
Other income (expense):
Interest expense, net		(489)		(1,637)
Gain on bifurcated derivative liability		0		2,754
Amortization of debt discount		12,572		12,572
Gain (loss) on change in fair value of liability-classified warrants		(705)		883
Other (expense) income, net		196		824
Total other income (expense)		(13,570)		(9,748)
Income (loss) from continuing operations before income taxes		(14,518)		(17,066)
Net loss		(14,405)		(15,834)
Comprehensive loss		$ (14,595)		$ (16,294)
Basic and diluted net loss per common share:
Basic (in usd per share)		$ (2.45)		$ (3.55)
Diluted (in usd per share)		$ (2.45)		$ (3.55)
Kanis S.A | Restated
Other income (expense):
Interest expense, net		$ (458)		$ (1,541)
Gain on bifurcated derivative liability		0		2,754
Amortization of debt discount		10,780		12,410
Gain (loss) on change in fair value of liability-classified warrants		(705)		883
Other (expense) income, net		196		824
Total other income (expense)		(11,747)		(9,490)
Income (loss) from continuing operations before income taxes		(12,695)		(16,808)
Net loss		(12,582)		(15,576)
Comprehensive loss		$ (12,772)		$ (16,036)
Basic and diluted net loss per common share:
Basic (in usd per share)		$ (2.14)		$ (3.49)
Diluted (in usd per share)		$ (2.14)		$ (3.49)