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Unsecured and Secured Indebtedness - Summary of Unsecured and Secured Indebtedness (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Net unamortized debt issuance costs $ (6,056)  
Total Senior Notes 1,451,768 $ 1,449,613
Total Term Loan 99,810 99,635
Mortgage indebtedness 125,799 249,260
Unsecured Senior Notes [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 1,460,000 1,460,000
Senior notes – discount, net (3,100) (4,000)
Net unamortized debt issuance costs (5,100) (6,400)
Total Senior Notes $ 1,451,800 $ 1,449,600
Debt Instrument Maturity Date, Start 2023-05  
Debt Instrument Maturity Date, End 2027-06  
Unsecured Senior Notes [Member] | Minimum [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate 3.375% 3.375%
Unsecured Senior Notes [Member] | Maximum [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate 4.70% 4.70%
Mortgage indebtedness-Variable Rate [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount $ 0 $ 96,500
Weighted average discount rate percent   2.30%
Mortgage indebtedness-Fixed Rate [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount $ 126,500 $ 153,800
Weighted average discount rate percent 4.20% 4.40%
Debt Instrument Maturity Date, Start 2022-09  
Debt Instrument Maturity Date, End 2025-05  
Mortgages    
Debt Instrument [Line Items]    
Net unamortized debt issuance costs $ (700) $ (1,000)
Mortgage indebtedness 125,800 249,300
Wells Fargo Bank National Association and PNC Bank National Association [Member] | Term Loan [Member] | Unsecured Debt [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 100,000 100,000
Net unamortized debt issuance costs (200) (400)
Total Term Loan $ 99,800 $ 99,600
Term Loan interest rates 1.10% 1.10%
Debt Instrument Maturity Date 2023-01