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

Related Party Transactions - Additional Information (Detail)

v3.21.2
Related Party Transactions - Additional Information (Detail) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Related Party Transaction [Line Items]        
Repayment of related party debt $ 1,538      
Aggregated related party transactions     $ 200 $ 300
Related party transaction, Interest, Accrual term quarterly   quarterly  
Due to related parties $ 1,122   $ 1,615 1,472
Related Party Loans [Member]        
Related Party Transaction [Line Items]        
Related party transaction, Rate 2.50%   2.50%  
Accrued interest, Related Party $ 30 $ 30 $ 40 $ 33
Accrued Transaction Costs Relating To The Business Combination [Member]        
Related Party Transaction [Line Items]        
Due to related parties 1,100      
KORE TM Data Brasil Processamento de Dados Ltda [Member] | Lease And Professional Services Agreement [Member] | General and Administrative Expense [Member]        
Related Party Transaction [Line Items]        
Aggregated related party transactions 200 $ 200    
Interfusion B V andT FoneB V [Member]        
Related Party Transaction [Line Items]        
Repayment of related party debt 1,600      
Interfusion B V andT FoneB V [Member] | Related Party Loans [Member]        
Related Party Transaction [Line Items]        
Repayment of related party debt $ 1,600