Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies Recently Adopted Standards (Details)

v3.20.1
Summary of Significant Accounting Policies Recently Adopted Standards (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Accumulated deficit $ 244.8   $ 186.3  
Prepaid expenses and other current assets 10.0   18.0  
Assets        
Operating lease assets 6.0 $ 8.6    
Finance lease assets 0.6 0.6    
Total lease assets 6.6 9.2    
Current        
Operating 3.3 3.5 0.0  
Noncurrent        
Operating 2.7 5.1 0.0  
Finance lease, liability 0.3 0.6 $ 0.0  
Lease Liability $ 6.5 9.2    
ASU 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Impact of Adoption        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Accumulated deficit       $ 4.1
Prepaid expenses and other current assets       0.4
Accounts receivables, net       $ 4.5
ASU 2016-02        
Assets        
Operating lease assets   8.6    
Finance lease assets   0.6    
Total lease assets   9.2    
Current        
Operating   3.5    
Noncurrent        
Operating   5.1    
Finance lease, liability   0.6    
Lease Liability   $ 9.2