Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Common Stock and Conversion Features (Details)

v3.20.4
Stockholders' Equity - Common Stock and Conversion Features (Details)
 12 Months Ended
Dec. 31, 2020
vote
class
Conversion of Stock [Line Items]  
Number of classes of common stock | class 3
Common Class A  
Conversion of Stock [Line Items]  
Votes per share held 1
Common Class B  
Conversion of Stock [Line Items]  
Votes per share held 0
Common Class C  
Conversion of Stock [Line Items]  
Votes per share held 0