Quarterly report pursuant to Section 13 or 15(d)

Capitalization and Equity Structure - Valuation Assumptions (Details)

v3.19.1
Capitalization and Equity Structure - Valuation Assumptions (Details)
3 Months Ended
Mar. 31, 2019
$ / shares
Dec. 31, 2017
$ / shares
Schedule of Capitalization, Equity [Line Items]    
Current share price (in dollars per share)   $ 8.00
Current share price    
Schedule of Capitalization, Equity [Line Items]    
Current share price (in dollars per share) $ 2.51  
Conversion price    
Schedule of Capitalization, Equity [Line Items]    
Conversion price (in dollars per share) $ 2.75  
Risk-free interest rate    
Schedule of Capitalization, Equity [Line Items]    
Measurement input percentage 2.30  
Term (years)    
Schedule of Capitalization, Equity [Line Items]    
Term (years) 1 year 9 months  
Volatility of stock    
Schedule of Capitalization, Equity [Line Items]    
Measurement input percentage 102.0