Annual report pursuant to Section 13 and 15(d)

Mandatorily-Redeemable Preferred Stock (Detail)

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Mandatorily-Redeemable Preferred Stock (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended 21 Months Ended
May 07, 2021
Feb. 12, 2021
Jan. 13, 2021
Jan. 31, 2021
Aug. 31, 2016
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Sale of Stock [Line Items]                  
Proceeds from issuance of preferred and common equity             $ 233,393 $ 130,348 $ 241,200
Convertible shares issued (in shares) 850,000                
Payments of legal costs             6,660 $ 6,620  
Term preferred stock, fair value             $ 4,000   $ 4,000
Series A Preferred Stock                  
Sale of Stock [Line Items]                  
Preferred stock, dividend rate         6.375%        
Preferred stock, par value (in dollars per share)         $ 0.001   $ 0.001 $ 0.001 $ 0.001
Preferred stock, shares issued (in shares)         1,150,000   0 1,150,000 0
Redemption price of redeemable preferred stock (in dollars per share)   $ 25.00              
Redemption of preferred stock   $ 28,800         $ 28,750 $ 0  
Series A Preferred Stock | Preferred Stock                  
Sale of Stock [Line Items]                  
Shares issued (in dollars per share)         $ 25.00        
Proceeds from issuance of mandatorily-redeemable preferred stock         $ 28,800        
Proceeds from issuance of preferred and common equity         $ 27,600        
Write off of deferred rent receivable           $ 127      
Series D Preferred Stock                  
Sale of Stock [Line Items]                  
Preferred stock, dividend rate       5.00%          
Preferred stock, par value (in dollars per share)       $ 0.001     $ 0.001 $ 0.001 $ 0.001
Preferred stock, shares issued (in shares)       2,415,000     2,415,000 0 2,415,000
Redemption price of redeemable preferred stock (in dollars per share)             $ 25.00   $ 25.00
Payments of legal costs       $ 2,100          
Series D Preferred Stock | Preferred Stock                  
Sale of Stock [Line Items]                  
Preferred stock, dividend rate     5.00%            
Shares issued (in dollars per share)       $ 25.00          
Proceeds from issuance of mandatorily-redeemable preferred stock       $ 60,400     $ 61,900    
Proceeds from issuance of preferred and common equity       $ 58,300          
Series D Preferred Stock | Preferred Stock | Fair Value, Inputs, Level 1                  
Sale of Stock [Line Items]                  
Shares issued (in dollars per share)             $ 25.64   $ 25.64