Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

v3.22.1
Summary of Significant Accounting Policies - Additional Information (Details)
$ / shares in Units, € in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2022
USD ($)
Segment
$ / shares
Mar. 31, 2022
EUR (€)
Dec. 31, 2021
$ / shares
Jan. 28, 2021
$ / shares
Accounting Policies [Line Items]        
Ordinary shares, par value | $ / shares $ 0.01   $ 0.01 $ 0.01
Number of business segments | Segment 1      
October Offering        
Accounting Policies [Line Items]        
Ordinary shares, par value | $ / shares $ 0.01      
Certificates Of Deposit        
Accounting Policies [Line Items]        
Restricted cash $ 30      
Warrants Issued | October 2020 Offering        
Accounting Policies [Line Items]        
Restricted cash 11      
Warrants Issued | June 3 SPA        
Accounting Policies [Line Items]        
Restricted cash 17      
Warrants Issued | June 30 SPA        
Accounting Policies [Line Items]        
Restricted cash 6      
Maximum        
Accounting Policies [Line Items]        
Cash, FDIC insured amount 250      
Cash, DGS insured amount $ 111 € 100