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

Summary of Significant Accounting Policies - Summary of Estimated Useful Life of Property Plant Equipment (Detail)

v3.21.2
Summary of Significant Accounting Policies - Summary of Estimated Useful Life of Property Plant Equipment (Detail)
 12 Months Ended
Dec. 31, 2020
Machinery and equipment [Member]  
Schedule of Estimated Useful life of property plant equipment [Line Items]  
Estimated Useful Life 5 years
Leasehold improvements [Member]  
Schedule of Estimated Useful life of property plant equipment [Line Items]  
Estimated Useful Life Shorter of estimated useful life or remaining lease term
Computer equipment [Member]  
Schedule of Estimated Useful life of property plant equipment [Line Items]  
Estimated Useful Life 3 years
Computer software [Member]  
Schedule of Estimated Useful life of property plant equipment [Line Items]  
Estimated Useful Life 3 years
Furniture and fixtures [Member]  
Schedule of Estimated Useful life of property plant equipment [Line Items]  
Estimated Useful Life 3 years