XML 71 R57.htm IDEA: XBRL DOCUMENT v3.20.4
Stockholders' Equity (Deficit) (Details)
12 Months Ended
Dec. 31, 2020
vote
class
Equity [Abstract]  
Number of classes of common stock | class 2
Class A Common Stock  
Class of Stock [Line Items]  
Common stock, number of votes per share 1
Class B Common Stock  
Class of Stock [Line Items]  
Common stock, number of votes per share 10
Common stock, conversion rate 1