Debt - Schedule of Aggregate Maturities of Total Indebtedness (Details) - Mortgages, Senior Notes and Term Loans - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
June 30, 2021	$ 6,900
June 30, 2022	7,171
June 30, 2023	266,030
June 30, 2024	0
June 30, 2025	608,600
Thereafter	950,000
Carrying Amount	1,838,701	$ 1,708,443
Less unamortized deferred financing costs	(14,295)	(12,996)
Total debt net of unamortized deferred financing costs	$ 1,824,406	$ 1,695,447