v3.19.3.a.u2
Unsecured Credit Agreements - Summary of Unsecured Credit Agreements (Detail) - USD ($)
$ in Thousands
12 Months Ended
Aug. 02, 2019
Feb. 27, 2019
Jul. 02, 2018
Jun. 23, 2017
Dec. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]            
Carrying amount of debt         $ 1,989,451 $ 1,450,551
Long-term Debt         1,989,451  
2020 Unsecured Term Loan            
Debt Instrument [Line Items]            
Maturity Date Aug. 02, 2020          
Unsecured Revolving Credit and Term Loan Agreement | Revolving Credit Facility            
Debt Instrument [Line Items]            
Maturity Date       Jan. 21, 2022    
Unsecured Revolving Credit and Term Loan Agreement | 2023 Unsecured Term Loan            
Debt Instrument [Line Items]            
Maturity Date       Jan. 31, 2023    
Unsecured Revolving Credit and Term Loan Agreement | 2024 Unsecured Term Loan            
Debt Instrument [Line Items]            
Basis spread on variable rate           1.90%
2026 Unsecured Term Loan            
Debt Instrument [Line Items]            
Maturity Date   Feb. 27, 2026        
Unsecured Debt            
Debt Instrument [Line Items]            
Carrying amount of debt         1,877,300 $ 1,371,100
Debt issuance costs, net         (7,919) (4,227)
Long-term Debt         $ 1,869,381 1,366,873
Unsecured Debt | Senior Guaranteed Notes Series A            
Debt Instrument [Line Items]            
Debt instrument, interest rate         4.84%  
Maturity Date         Apr. 30, 2027  
Carrying amount of debt         $ 150,000 150,000
Unsecured Debt | Senior Guaranteed Notes Series B            
Debt Instrument [Line Items]            
Debt instrument, interest rate     5.09%   5.09%  
Maturity Date     Jul. 02, 2028   Jul. 31, 2028  
Carrying amount of debt         $ 225,000 225,000
Unsecured Debt | Senior Guaranteed Notes Series C            
Debt Instrument [Line Items]            
Debt instrument, interest rate     5.19%   5.19%  
Maturity Date     Jul. 02, 2030   Jul. 31, 2030  
Carrying amount of debt         $ 100,000 100,000
Unsecured Debt | Senior Guaranteed Notes Series            
Debt Instrument [Line Items]            
Carrying amount of debt         $ 475,000 475,000
Unsecured Debt | 2019 Unsecured Term Loan            
Debt Instrument [Line Items]            
Interest Rate         one-month LIBOR + 1.40%  
Maturity Date         Feb. 29, 2020  
Carrying amount of debt           300,000
Unsecured Debt | 2019 Unsecured Term Loan | 1 Month LIBOR            
Debt Instrument [Line Items]            
Basis spread on variable rate         1.40%  
Unsecured Debt | 2020 Unsecured Term Loan            
Debt Instrument [Line Items]            
Interest Rate         one-month LIBOR + 1.25%  
Maturity Date         Aug. 31, 2020  
Basis spread on variable rate         1.25%  
Carrying amount of debt         $ 300,000  
Unsecured Debt | Unsecured Revolving Credit and Term Loan Agreement            
Debt Instrument [Line Items]            
Carrying amount of debt         $ 652,300 596,100
Unsecured Debt | Unsecured Revolving Credit and Term Loan Agreement | Revolving Credit Facility            
Debt Instrument [Line Items]            
Interest Rate         one-month LIBOR + 1.20%  
Maturity Date         Jan. 31, 2022  
Carrying amount of debt         $ 197,300 141,100
Unsecured Debt | Unsecured Revolving Credit and Term Loan Agreement | Revolving Credit Facility | 1 Month LIBOR            
Debt Instrument [Line Items]            
Basis spread on variable rate         1.20%  
Unsecured Debt | Unsecured Revolving Credit and Term Loan Agreement | 2023 Unsecured Term Loan            
Debt Instrument [Line Items]            
Interest Rate         one-month LIBOR + 1.35%  
Maturity Date         Jan. 31, 2023  
Carrying amount of debt         $ 265,000 265,000
Unsecured Debt | Unsecured Revolving Credit and Term Loan Agreement | 2023 Unsecured Term Loan | 1 Month LIBOR            
Debt Instrument [Line Items]            
Basis spread on variable rate         1.35%  
Unsecured Debt | Unsecured Revolving Credit and Term Loan Agreement | 2024 Unsecured Term Loan            
Debt Instrument [Line Items]            
Interest Rate         one-month LIBOR + 1.25%  
Maturity Date         Jun. 30, 2024  
Carrying amount of debt         $ 190,000 $ 190,000
Unsecured Debt | Unsecured Revolving Credit and Term Loan Agreement | 2024 Unsecured Term Loan | 1 Month LIBOR            
Debt Instrument [Line Items]            
Basis spread on variable rate         1.25%  
Unsecured Debt | 2026 Unsecured Term Loan            
Debt Instrument [Line Items]            
Interest Rate         one-month LIBOR + 1.85%  
Maturity Date         Feb. 28, 2026  
Carrying amount of debt         $ 450,000  
Unsecured Debt | 2026 Unsecured Term Loan | 1 Month LIBOR            
Debt Instrument [Line Items]            
Basis spread on variable rate         1.85%