General form of registration statement for all companies including face-amount certificate companies

Revenue, Contract Assets, Contract Liabilities and Remaining Performance Obligations - Schedule of Disaggregation of Revenue by Geography (Parenthetical) (Detail)

v3.21.2
Revenue, Contract Assets, Contract Liabilities and Remaining Performance Obligations - Schedule of Disaggregation of Revenue by Geography (Parenthetical) (Detail)
 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
United Kingdom [Member]        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 11.00%      
Netherlands [Member]        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 31.00% 41.00% 37.00% 48.00%
U.S. [Member]        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 31.00% 37.00%    
Australia [Member]        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 12.00%