Restatement of Prior Period Financial Statements - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended
	Jan. 31, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Apr. 01, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Conversion feature and call option value						$ 3,900,000
Amortization of debt discount		$ 0	$ 10,780,000	$ 194,000	$ 12,410,000
Amortization of debt discount			300,000	$ 0	398,000
Gain on derivative					2,800,000
Kanis S.A
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Amortization of debt discount			1,600,000		200,000
Amortization of debt discount			$ 100,000		$ 100,000
Convertible Debt | Two Million 8 Percent Shareholder Note Due September 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Face amount of debt						2,000,000.0
Amortization of debt discount	$ 200,000
Convertible Debt | Kanis Agreement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Long-term debt, gross						$ 7,500,000