Annual report pursuant to Section 13 and 15(d)

Mortgage Notes Payable and Credit Facility - Additional Information (Detail)

v3.20.4
Mortgage Notes Payable and Credit Facility - Additional Information (Detail)
1 Months Ended
Jul. 02, 2019
USD ($)
Oct. 27, 2017
USD ($)
Oct. 31, 2015
USD ($)
Dec. 31, 2020
USD ($)
property
mortgage
Dec. 31, 2019
USD ($)
Jul. 01, 2019
USD ($)
Oct. 26, 2017
USD ($)
Debt Instrument [Line Items]              
Number of properties collateralized in mortgage notes payable | property       118      
Long-term debt       $ 668,692,000 $ 626,594,000    
Line of credit facility, maximum borrowing capacity $ 160,000,000.0 $ 75,000,000.0       $ 75,000,000.0 $ 25,000,000.0
Borrowings under revolving credit facility, net       $ 53,312,000 51,579,000    
Line of credit at an interest rate (as percent)       1.76%      
Weighted average interest rate on debt outstanding (as percent)       3.45%      
Mortgage notes payable              
Debt Instrument [Line Items]              
Number of mortgage notes payable | mortgage       53      
Number of properties collateralized in mortgage notes payable | property       68      
Net book value of collateralized mortgage properties       $ 687,600,000      
Fair value of mortgage notes payable outstanding       468,600,000      
Long-term debt       $ 456,177,000 $ 453,739,000    
Weighted average interest rate on debt outstanding (as percent)       4.24%      
LIBOR              
Debt Instrument [Line Items]              
Spread on LIBOR (as percent)   2.75%          
Term loan facility              
Debt Instrument [Line Items]              
Line of credit facility, maximum borrowing capacity 160,000,000.0            
Revolving credit facility              
Debt Instrument [Line Items]              
Line of credit facility, maximum borrowing capacity $ 100,000,000.0         $ 85,000,000.0  
Line of credit              
Debt Instrument [Line Items]              
Line of credit facility, maximum borrowing capacity     $ 85,000,000.0        
Reduction at each of the leverage tiers (as percent) 0.10% 0.25%          
Borrowings under revolving credit facility, net       $ 213,900,000      
Letters of credit, outstanding       16,400,000      
Line of credit facility, maximum additional amount drawn       $ 19,200,000      
Line of credit | Five year term loan facility              
Debt Instrument [Line Items]              
Line of credit facility, maximum borrowing capacity     $ 25,000,000.0        
Debt instrument term     5 years        
Line of credit | Term loan facility              
Debt Instrument [Line Items]              
Debt instrument term 5 years            
Line of credit | Revolving credit facility              
Debt Instrument [Line Items]              
Debt instrument term 4 years            
Debt instrument, fee $ 1,300,000            
Letter of credit              
Debt Instrument [Line Items]              
Weighted average interest rate on debt outstanding (as percent)       1.65%      
Minimum | Term loan facility | LIBOR              
Debt Instrument [Line Items]              
Spread on LIBOR (as percent) 2.50%            
Maximum | Term loan facility | LIBOR              
Debt Instrument [Line Items]              
Spread on LIBOR (as percent) 2.75%