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

Income Tax - Additional Information (Detail)

v3.21.2
Income Tax - Additional Information (Detail) - USD ($)
 9 Months Ended 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Line Items]            
Total provision for income tax expense $ 0 $ 0 $ 0 $ 0 $ 0 $ 0
Income tax benefit recorded due to uncertainty of the realization of any tax assets         0 0
Effective Income Tax Rate Reconciliation, Percent     0.00% 0.00%    
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent     21.00% 21.00%    
Domestic Tax Authority [Member]            
Income Tax Disclosure [Line Items]            
Operating loss carryforwards 7,173,000 1,370,000     7,173,000 1,370,000
State and Local Jurisdiction [Member]            
Income Tax Disclosure [Line Items]            
Operating loss carryforwards $ 7,173,000 $ 1,370,000     $ 7,173,000 $ 1,370,000