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Stockholder Equity and Noncontrolling Interest - Additional Information (Detail)
$ / shares in Units, $ in Thousands
 12 Months Ended
Mar. 07, 2022
shares
Dec. 14, 2021
USD ($)
shares
Nov. 01, 2021
shares
Jul. 27, 2021
$ / shares
shares
Dec. 31, 2022
USD ($)
shares
Dec. 31, 2021
agreement
shares
Dec. 31, 2020
shares
May 18, 2022
USD ($)
Nov. 13, 2020
USD ($)
Class Of Stock [Line Items]                  
At-the-market agreement to sell common shares, maximum offer price | $                 $ 150,000
Stock repurchase program, authorized amount | $               $ 250,000  
Amount remaining authorized for purchase under the stock repurchase program | $         $ 250,000        
Number of IROP unites exchanged (in shares)         890,669 122,154      
OP Units outstanding (in shares)         6,091,171 6,981,841      
Common Shares                  
Class Of Stock [Line Items]                  
Issuance of common shares (in shares)         2,051,498 118,659,635 10,350,000    
Conversion of noncontrolling interest to common shares (in shares)         890,669 122,154 196,974    
Steadfast Apartment REIT, Inc.                  
Class Of Stock [Line Items]                  
Stock issued in connection with merger (in shares)           6,429,481      
Underwriting Agreement | BMO Capital Markets and Bank of Montreal                  
Class Of Stock [Line Items]                  
Issuance of common shares (in shares)       16,100,000          
Share price (in dollars per share) | $ / shares       $ 17.04          
Underwriters’ option to purchase additional shares (in shares)       2,100,000          
ATM Program                  
Class Of Stock [Line Items]                  
Number of shares issued (in shares)         2,000,000        
Issuance under the ATM program (in shares)         56,836,000        
Net proceed of common stock | $         $ 49,935        
ATM Program | Forward Contracts                  
Class Of Stock [Line Items]                  
Number of shares issued (in shares) 1,000,000   1,000,000            
Forward Sale Agreement                  
Class Of Stock [Line Items]                  
Number of shares issued (in shares)   16,100,000   16,100,000          
Issuance of common shares (in shares)           16,100,000      
Number of agreements | agreement           2      
Net proceed of common stock | $   $ 271,820