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

Significant Accounting Policies - Property, Plant and Equipment ("PP&E") (Details)

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Significant Accounting Policies - Property, Plant and Equipment ("PP&E") (Details)
9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Furniture & Fixtures    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 7 years 7 years
Computer Equipment    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 3 years 3 years
Medical Equipment    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 7 years 7 years
Software    
Property, Plant and Equipment [Line Items]    
Estimated useful lives 3 years 3 years