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

Basis of Presentation and Summary of Significant Accounting Policies - Property, plant and equipment, net (Details)

v3.21.2
Basis of Presentation and Summary of Significant Accounting Policies - Property, plant and equipment, net (Details)
 12 Months Ended
Dec. 31, 2020
Computers and Peripheral Equipment  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 3 years
Office furniture and equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 4 years
Office furniture and equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 7 years
Leasehold Improvements | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 4 years
Leasehold Improvements | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful lives 6 years