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Fair Value Measurements - Schedule of Carrying Values Different from Estimated Fair Values (Detail) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Senior Notes $ 1,449,075 $ 1,647,963
Revolving Credit Facilities and term loan 274,591 104,460
Mortgage Indebtedness 53,316 94,874
Total indebtedness 1,776,982 1,847,297
Fair Value [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Senior Notes 1,517,924 1,744,581
Revolving Credit Facilities and term loan 275,000 105,084
Mortgage Indebtedness 53,689 96,276
Total indebtedness $ 1,846,613 $ 1,945,941