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

Summary of Significant Accounting Policies - Summary of Customers Whose Revenue and Accounts Receivable Balances (Parenthetical) (Detail)

v3.21.2
Summary of Significant Accounting Policies - Summary of Customers Whose Revenue and Accounts Receivable Balances (Parenthetical) (Detail)
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Maximum [Member] | Customer Concentration Risk [Member] | Sales Revenue Net And Accounts Receivable [Member]    
Concentration Risk [Line Items]    
Concentration risk percentage 10.00% 10.00%