Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements Measurement Levels (Details)

v3.10.0.1
Fair Value Measurements Measurement Levels (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability $ 3,458  
Fair value, measurements, recurring | Quoted Prices in Active Markets (Level 1)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 0  
Fair value, measurements, recurring | Significant Other Observable Inputs (Level 2)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 0  
Fair value, measurements, recurring | Significant Unobservable Inputs (Level 3)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 3,458  
ESW Holdings, Inc.    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 2,572  
ESW Holdings, Inc. | Fair value, measurements, recurring | Quoted Prices in Active Markets (Level 1)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 0  
ESW Holdings, Inc. | Fair value, measurements, recurring | Significant Other Observable Inputs (Level 2)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 0  
ESW Holdings, Inc. | Fair value, measurements, recurring | Significant Unobservable Inputs (Level 3)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 2,572  
Hale Capital, LLP    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 691 $ 819
Hale Capital, LLP | Fair value, measurements, recurring | Quoted Prices in Active Markets (Level 1)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 0 0
Hale Capital, LLP | Fair value, measurements, recurring | Significant Other Observable Inputs (Level 2)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 0 0
Hale Capital, LLP | Fair value, measurements, recurring | Significant Unobservable Inputs (Level 3)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 691 $ 819
iStudy Co., Ltd.    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 195  
iStudy Co., Ltd. | Fair value, measurements, recurring | Quoted Prices in Active Markets (Level 1)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 0  
iStudy Co., Ltd. | Fair value, measurements, recurring | Significant Other Observable Inputs (Level 2)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability 0  
iStudy Co., Ltd. | Fair value, measurements, recurring | Significant Unobservable Inputs (Level 3)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liability $ 195