Quarterly report pursuant to Section 13 or 15(d)

Stockholders??? equity - Additional Information (Details)

v3.22.1
Stockholders’ equity - Additional Information (Details)
 3 Months Ended
Mar. 31, 2022
USD ($)
dividend
boardMember
$ / shares
shares
Mar. 31, 2021
USD ($)
$ / shares
Dec. 31, 2021
shares
Stockholders' Equity Note [Abstract]      
Distributions to preferred stockholders $ 9,580,000 $ 12,046,000  
Number of quarterly dividends in arrearage before preferred stockholders can elect additional board members | dividend 6    
Number of additional board members the preferred stockholders can elect in the case of an excess arrearage of quarterly dividends | boardMember 2    
Dividends in arrears $ 0    
Redeemable preferred stock, redemption price (in dollars per share) | $ / shares $ 25.00    
Distributions paid to common stockholders $ 29,010,000 $ 28,872,000  
Dividends paid per share of common stock (in dollars per share) | $ / shares $ 1.05 $ 1.05  
Distributions paid to noncontrolling interests — common units $ 7,671,000 $ 7,671,000  
Dividends paid per common unit (in dollars per share) | $ / shares $ 1.05 $ 1.05  
Equity stock, shares authorized (in shares) | shares 100,000,000    
Equity stock, shares issued (in shares) | shares 0   0