Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.3
Mortgage Notes Payable and Credit Facility - Additional Information (Detail)
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended
Jul. 02, 2019
USD ($)
Jan. 31, 2019
mortgage
property
Oct. 27, 2017
USD ($)
Oct. 31, 2015
USD ($)
Sep. 30, 2019
USD ($)
mortgage
property
Jun. 30, 2018
USD ($)
Jun. 30, 2018
USD ($)
Sep. 30, 2019
USD ($)
mortgage
property
Sep. 30, 2018
USD ($)
Jul. 01, 2019
USD ($)
Dec. 31, 2018
USD ($)
Oct. 26, 2017
USD ($)
Debt Instrument [Line Items]                        
Number of properties collateralized in mortgage notes payable | property         106     106        
Payments of deferred financing costs               $ 2,075,000 $ 345,000      
Fair value of mortgage notes payable         $ 447,800,000     447,800,000        
Extension fee on initial maturity (as percent)     0.25%                  
Line of credit outstanding         $ 34,915,000     $ 34,915,000     $ 50,084,000  
Weighted average interest rate on debt outstanding (as percent)         4.58%     4.58%        
Term loan facility                        
Debt Instrument [Line Items]                        
Maximum borrowing capacity $ 160,000,000.0   $ 75,000,000.0             $ 75,000,000.0   $ 25,000,000.0
Extension fee on initial maturity (as percent)       0.05%                
Revolving credit facility                        
Debt Instrument [Line Items]                        
Maximum borrowing capacity $ 100,000,000.0                 $ 85,000,000.0    
Line of credit                        
Debt Instrument [Line Items]                        
Extension fee on initial maturity (as percent) 0.10%                      
Line of credit outstanding         $ 158,100,000     $ 158,100,000        
Weighted average interest rate (as percent)         3.63%     3.63%        
Letters of credit, outstanding         $ 8,300,000     $ 8,300,000        
Maximum additional amount that can be drawn under Line of Credit         $ 25,800,000     $ 25,800,000        
Line of credit | Term loan facility                        
Debt Instrument [Line Items]                        
Maximum borrowing capacity       $ 25,000,000.0                
Term of debt 5 years     5 years                
Line of credit | Revolving credit facility                        
Debt Instrument [Line Items]                        
Maximum borrowing capacity     $ 85,000,000.0 $ 85,000,000.0                
Term of debt 4 years                      
Debt instrument fees incurred $ 1,300,000                      
Letter of credit                        
Debt Instrument [Line Items]                        
Weighted average interest rate on debt outstanding (as percent)         1.65%     1.65%        
Variable rate mortgage loans                        
Debt Instrument [Line Items]                        
Number of properties collateralized in mortgage notes payable | property         12     12        
Carrying value         $ 45,514,000     $ 45,514,000     60,659,000  
Mortgage notes payable                        
Debt Instrument [Line Items]                        
Number of mortgage notes payable | mortgage         47     47        
Number of properties collateralized in mortgage notes payable | property         63     63        
Net book value of collateralized mortgage properties         $ 632,300,000     $ 632,300,000        
Recourse amount of mortgage notes payable         16,200,000     $ 16,200,000        
Percentage of debt recourse (as percent)               3.70%        
Carrying value         $ 438,734,000     $ 438,734,000        
Weighted average interest rate on debt outstanding (as percent)         4.33%     4.33%        
Issued and assumed mortgage notes payable                        
Debt Instrument [Line Items]                        
Number of mortgage notes payable | mortgage         3     3        
Number of properties collateralized in mortgage notes payable | property         3     3        
Fixed rate mortgage loans                        
Debt Instrument [Line Items]                        
Number of properties collateralized in mortgage notes payable | property         51     51        
Number of long-term mortgages repaid | mortgage   3           1        
Number of properties repaid to collateralized mortgages notes payable | property   7           3        
Stated interest rate (as percent)         4.18%     4.18%        
Payments of deferred financing costs         $ 1,400,000 $ 100,000 $ 300,000 $ 2,100,000        
Carrying value         $ 393,220,000     $ 393,220,000     $ 385,051,000  
LIBOR | Term loan facility                        
Debt Instrument [Line Items]                        
Spread on LIBOR (as percent)     2.75%                  
Minimum | Fixed rate mortgage loans                        
Debt Instrument [Line Items]                        
Stated interest rate (as percent)         3.42%     3.42%        
Minimum | LIBOR | Term loan facility                        
Debt Instrument [Line Items]                        
Spread on LIBOR (as percent) 2.50%                      
Minimum | LIBOR | Variable rate mortgage loans                        
Debt Instrument [Line Items]                        
Spread on LIBOR (as percent)               2.00%        
Maximum | Fixed rate mortgage loans                        
Debt Instrument [Line Items]                        
Stated interest rate (as percent)         6.63%     6.63%        
Maximum | LIBOR | Term loan facility                        
Debt Instrument [Line Items]                        
Spread on LIBOR (as percent) 2.75%                      
Maximum | LIBOR | Variable rate mortgage loans                        
Debt Instrument [Line Items]                        
Spread on LIBOR (as percent)               2.75%