Quarterly report pursuant to Section 13 or 15(d)

Related-Party Transactions - Additional Information (Detail)

v3.20.2
Related-Party Transactions - Additional Information (Detail)
 3 Months Ended 9 Months Ended
Jul. 14, 2020
Feb. 20, 2020
$ / shares
shares
Sep. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Sep. 30, 2020
USD ($)
officer
quarter
Sep. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Related Party Transaction [Line Items]              
Number of executive officers | officer         2    
Amount due to Adviser and Administrator [1]     $ 2,971,000   $ 2,971,000   $ 2,904,000
Annual base management fee, in percentage of stockholders' equity, adjusted to unrealized gains or losses (as percent) 0.425%       1.50%    
Quarterly base management fee, in percentage of stockholders' equity, adjusted to unrealized gains or losses (as percent) 0.10625%       0.375%    
Base management fee [2]     1,418,000 $ 1,292,000 $ 4,219,000 $ 3,852,000  
Pre-incentive quarterly fee FFO in percentage of common stockholders' equity that will reward the Adviser (as percent)         2.00%    
Pre-incentive annual fee FFO in percentage of common stockholders' equity that will reward the Adviser (as percent)         8.00%    
Amount to be paid to Adviser in percentage of pre-incentive fee condition one (as percent)         15.00%    
Number of quarters used for the cap of average quarterly incentive fees | quarter         4    
Incentive fee [2]     1,128,000 965,000 $ 3,301,000 2,720,000  
Portion of incentive fee waived     0 0 $ 0 0  
Capital gains-based incentive fee (as percent)         15.00%    
Capital gain fee     0 0 $ 0 0  
Percentage of independent directors required to terminate the Amended Advisory Agreement (as a percent)         66.67%    
Termination fee payable (as percent)         200.00%    
Notice period for termination of agreement without cause         120 days    
Notice period for termination of agreement with cause         30 days    
Administration fee [2]     361,000 411,000 $ 1,194,000 1,222,000  
Fees paid       $ 3,000 $ 89,637 $ 100,000  
Financing fee on total secured mortgages percentage (as percent)       0.08% 0.25% 0.19%  
Selling commissions (as percent)   6.00%          
Dealer management fee (as percent)   3.00%          
Dealer management fee, payments for commissions     $ 100,000   $ 100,000    
Minimum              
Related Party Transaction [Line Items]              
Percentage of the amount of the mortgage (as percent)         0.15%    
Maximum              
Related Party Transaction [Line Items]              
Percentage of the amount of the mortgage (as percent)         1.00%    
Series F Cumulative Redeemable Preferred Stock | Preferred Stock | Dealer Management Agreement              
Related Party Transaction [Line Items]              
Redeemable preferred stock, shares authorized (in shares) | shares   20,000,000          
Redeemable preferred stock, dividend rate percentage (as percent)   6.00%          
Redeemable preferred stock, par value (in dollars per share) | $ / shares   $ 0.001          
Redeemable preferred stock, dividend reinvestment plan, shares authorized (in shares) | shares   6,000,000          
[1] Refer to Note 2 “Related-Party Transactions”
[2] Refer to Note 2 “Related-Party Transactions”