Restatement of Prior Period Financial Statements - Schedule of Revisions to Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net loss	$ (360)	$ (12,582)	$ (3,842)	$ (15,576)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of debt discount	$ 0	10,780	194	12,410
Amortization of debt discount		300	$ 0	398
Kanis S.A
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of debt discount		1,600		200
Amortization of debt discount		100		100
Kanis S.A | Reported
Cash flows from operating activities:
Net loss		(14,405)		(15,834)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of debt discount		12,572		12,572
Amortization of debt discount				494
Kanis S.A | Restated
Cash flows from operating activities:
Net loss		(12,582)		(15,576)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of debt discount		$ 10,780		12,410
Amortization of debt discount				$ 398