Registration statement for securities of certain foreign private issuers

Segment Information - Additional Information (Detail)

v3.21.2
Segment Information - Additional Information (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Disclosure of operating segments [line items]        
Non-current assets $ 159,248 $ 109,467   $ 50,842
UK        
Disclosure of operating segments [line items]        
Percentage of non current assets 55.80% 64.80% 64.80%  
Non-current assets $ 88,566 $ 70,920 $ 70,920  
Percentage of accounts receivable 54.60% 47.60% 47.60%  
Trade receivables current $ 6,297 $ 2,224 $ 2,224  
US        
Disclosure of operating segments [line items]        
Percentage of non current assets 40.90% 34.50% 34.50%  
Non-current assets $ 64,869 $ 37,776 $ 37,776  
Percentage of accounts receivable 40.10% 50.10% 50.10%  
Trade receivables current $ 4,618 $ 2,339 $ 2,339