Quarterly report pursuant to Section 13 or 15(d)

Related-Party Transactions - Additional Information (Detail)

v3.20.1
Related-Party Transactions - Additional Information (Detail)
 3 Months Ended
Feb. 20, 2020
$ / shares
shares
Jan. 10, 2017
quarter
Mar. 31, 2020
USD ($)
officer
Mar. 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
Related Party Transaction [Line Items]          
Number of executive officers | officer     2    
Amount due to Adviser and Administrator [1]     $ 3,152,000   $ 2,904,000
Annual base management fee, in percentage of stockholders' equity, adjusted to unrealized gains or losses (as percent)   1.50%      
Quarterly base management fee, in percentage of stockholders' equity, adjusted to unrealized gains or losses (as percent)   0.375%      
Base management fee [2]     $ 1,412,000 $ 1,267,000  
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 description     However, in no event shall the incentive fee for a particular quarter exceed by 15.0% (the cap) the average quarterly incentive fee paid by us for the previous four quarters (excluding quarters for which no incentive fee was paid).    
Incentive fee [2]     $ 1,055,000 851,000  
Portion of incentive fee waived     0 0  
Capital gains-based incentive fee (as percent)   15.00%      
Capital gain fee     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]     438,000 413,000  
Fees paid     $ 90,000 $ 20,000  
Financing fee on total secured mortgages percentage (as percent)     0.25% 0.15%  
Selling commissions (as percent) 6.00%        
Dealer management fee (as percent) 3.00%        
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          
Related Party Transaction [Line Items]          
Redeemable preferred stock, shares authorized (in shares) | shares 26,000,000        
Redeemable preferred stock, dividend rate percentage (as percent) 6.00%        
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”