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Fair Value Measurements - Schedule of Carrying Values Different from Estimated Fair Values (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Senior Notes $ 1,451,229 $ 1,449,613
Revolving Credit Facilities and term loan 99,767 234,635
Mortgage Indebtedness 241,561 249,260
Total indebtedness 1,792,557 1,933,508
Fair Value [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Senior Notes 1,579,853 1,549,866
Revolving Credit Facilities and term loan 100,000 235,000
Mortgage Indebtedness 243,750 250,624
Total indebtedness $ 1,923,603 $ 2,035,490