Debt - Schedule of Aggregate Maturities of Total Indebtedness (Details) - Mortgages, Senior Notes and Term Loans - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
March 31, 2021	$ 6,833
March 31, 2022	7,102
March 31, 2023	7,381
March 31, 2024	260,454
March 31, 2025	602,075
Thereafter	950,000
Aggregate principal amount of debt	1,833,845	$ 1,708,443
Less unamortized deferred financing costs	(14,976)	(12,996)
Total indebtedness, net of unamortized deferred financing costs	$ 1,818,869	$ 1,695,447