Quarterly report pursuant to Section 13 or 15(d)

SUBSEQUENT EVENTS (Details)

v3.19.2
SUBSEQUENT EVENTS (Details) - USD ($)
Jul. 29, 2019
Jul. 30, 2019
Jun. 30, 2019
Apr. 24, 2019
Subsequent Event [Line Items]        
Effective interest rate (percent)       4.27%
Letter of credit        
Subsequent Event [Line Items]        
Letters of credit outstanding     $ 5,700,000  
Subsequent Event | 2029 Senior Notes | Unsecured Debt        
Subsequent Event [Line Items]        
Debt instrument, face amount   $ 100,000,000.0    
Long-term debt, percentage bearing fixed interest, percentage rate   3.98%    
Subsequent Event | 2031 Senior Notes | Unsecured Debt        
Subsequent Event [Line Items]        
Debt instrument, face amount   $ 50,000,000.0    
Long-term debt, percentage bearing fixed interest, percentage rate   4.08%    
Subsequent Event | Amended Credit Facility        
Subsequent Event [Line Items]        
Extension fee (percent) 0.075%      
Subsequent Event | Amended Credit Facility | Unsecured Debt        
Subsequent Event [Line Items]        
Amended credit facility total borrowing capacity increase $ 255,000,000.0      
Maximum borrowing capacity 1,275,000,000      
Maximum borrowing capacity if expansion option is exercised $ 1,750,000,000      
Maximum total leverage ratio 60.00%      
Maximum total leverage ratio allowable within two quarters of material acquisition 65.00%      
Minimum fixed charge ratio 1.5      
Maximum unsecured debt to unencumbered asset value ratio 60.00%      
Maximum unsecured debt to unencumbered asset value ratio allowable within two quarters of material acquisition 65.00%      
Minimum enencumbered adjusted net operating income to unsecured interest expense ratio 2.0      
Subsequent Event | Fed Funds Rate | Amended Credit Facility | Unsecured Debt        
Subsequent Event [Line Items]        
Basis spread on variable rate (percent) 0.50%      
Subsequent Event | LIBOR | Amended Credit Facility | Unsecured Debt        
Subsequent Event [Line Items]        
Basis spread on variable rate (percent) 1.00%      
Subsequent Event | Minimum | LIBOR | Amended Credit Facility | Unsecured Debt        
Subsequent Event [Line Items]        
Leverage based applicable margin (percent) 1.15%      
Credit pricing elective applicable margin (percent) 0.78%      
Subsequent Event | Minimum | Base Rate | Amended Credit Facility | Unsecured Debt        
Subsequent Event [Line Items]        
Leverage based applicable margin (percent) 0.15%      
Credit pricing elective applicable margin (percent) 0.00%      
Subsequent Event | Maximum | LIBOR | Amended Credit Facility | Unsecured Debt        
Subsequent Event [Line Items]        
Leverage based applicable margin (percent) 2.20%      
Credit pricing elective applicable margin (percent) 2.25%      
Subsequent Event | Maximum | Base Rate | Amended Credit Facility | Unsecured Debt        
Subsequent Event [Line Items]        
Leverage based applicable margin (percent) 1.20%      
Credit pricing elective applicable margin (percent) 1.25%      
Subsequent Event | Revolving line of credit | Amended Credit Facility | Line of Credit        
Subsequent Event [Line Items]        
Maximum borrowing capacity $ 500,000,000.0      
Revolving line of credit remaining borrowing capacity $ 395,500,000      
Subsequent Event | Revolving line of credit | Minimum | Amended Credit Facility        
Subsequent Event [Line Items]        
Usage based fees with respect to unused portion of Revolver (percent) 0.15%      
Ratings based fees if credit pricing elected (percent) 0.125%      
Subsequent Event | Revolving line of credit | Maximum | Amended Credit Facility        
Subsequent Event [Line Items]        
Usage based fees with respect to unused portion of Revolver (percent) 0.20%      
Ratings based fees if credit pricing elected (percent) 0.30%      
Subsequent Event | Term loan A | Amended Credit Facility | Unsecured Debt        
Subsequent Event [Line Items]        
Maximum borrowing capacity $ 125,000,000.0      
Effective interest rate (percent) 3.74%      
Subsequent Event | Term loan B | Amended Credit Facility | Unsecured Debt        
Subsequent Event [Line Items]        
Maximum borrowing capacity $ 250,000,000.0      
Effective interest rate (percent) 2.91%      
Subsequent Event | Term loan C | Amended Credit Facility | Unsecured Debt        
Subsequent Event [Line Items]        
Maximum borrowing capacity $ 225,000,000.0      
Effective interest rate (percent) 2.80%      
Subsequent Event | Term loan D | Amended Credit Facility | Unsecured Debt        
Subsequent Event [Line Items]        
Maximum borrowing capacity $ 175,000,000.0      
Effective interest rate (percent) 3.57%      
Subsequent Event | Letter of credit | Amended Credit Facility | Line of Credit        
Subsequent Event [Line Items]        
Letters of credit outstanding $ 5,700,000