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Unsecured Credit Agreements - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Debt Instrument [Line Items]    
Weighted Average Fixed Rate 5.03%  
Total unsecured debt $ 1,944,323 $ 2,034,076
Debt issuance costs incurred 0  
Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Debt issuance costs 3,800  
Unsecured Revolving Credit Facility [Member] | Unsecured Debt    
Debt Instrument [Line Items]    
Total unsecured debt $ 108,330 197,322
Basis spread on variable rate [1] 0.85%  
2026 Unsecured Term Loan | Unsecured Debt    
Debt Instrument [Line Items]    
Total unsecured debt $ 400,000 $ 400,000
Interest Rate Swap    
Debt Instrument [Line Items]    
Weighted Average Fixed Rate 2.18%  
[1] At March 31, 2023 and December 31, 2022, a balance of $34.5 million and $123.5 million was subject to the one-month SOFR of 4.8% and 4.36%, respectively. The remaining balance includes $100 million CAD borrowings remeasured to $73.8 million USD, at March 31, 2023 and December 31, 2022, respectively, and was subject to the one-month CDOR of 4.95% and 4.74%, respectively.