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Equity - Additional Information (Detail) - shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Equity [Line Items]    
Preferred stock, number of shares proposed to be issued 10,000,000 10,000,000
Common stock, number of shares proposed to be issued 180,000,000 180,000,000
Common stock voting rights one vote for each share  
Maximum [Member]    
Equity [Line Items]    
Preferred stock, number of shares proposed to be issued 10,000,000  
Common stock, number of shares proposed to be issued 180,000,000