Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Narrative (Details)

v3.10.0.1
Shareholders' Equity - Narrative (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Nov. 08, 2018
USD ($)
$ / shares
shares
Dec. 31, 2018
vote / shares
$ / shares
shares
Dec. 31, 2017
$ / shares
shares
Class of Stock [Line Items]      
Common stock, shares authorized (in shares)   750,000,000 750,000,000
Common stock, par value (in dollars per share) | $ / shares   $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares)   10,000,000  
Preferred stock, par value (in dollars per share) | $ / shares   $ 0.01  
Private placement agreement number of shares (in shares) 26,500,000    
Private placement agreement price per share (in dollars per share) | $ / shares $ 3.49    
Private placement agreement value of shares | $ $ 92.5    
Votes per common share | vote / shares   1  
Designate shares of preferred stock (in shares)   10,000,000  
Series A Preferred Stock      
Class of Stock [Line Items]      
Preferred stock, shares authorized (in shares)   4,000,000  
Preferred stock, shares issued (in shares)   0 0
Preferred stock, shares outstanding (in shares)   0 0
Series C Preferred Stock      
Class of Stock [Line Items]      
Preferred stock, shares authorized (in shares)   500,000  
Preferred stock, shares issued (in shares)   0 0
Preferred stock, shares outstanding (in shares)   0 0
Series D Preferred Stock      
Class of Stock [Line Items]      
Preferred stock, shares authorized (in shares)   2,000,000  
Preferred stock, shares issued (in shares)   0 0
Preferred stock, shares outstanding (in shares)   0 0
Chief Executive Officer      
Class of Stock [Line Items]      
Private placement agreement value of shares | $ 70.0    
Chief Technical Officer      
Class of Stock [Line Items]      
Private placement agreement value of shares | $ $ 2.0