Mortgage and Other Indebtedness - Schedule of Debt Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Scheduled Principal Payments
2019	$ 5,034
2020	5,396
2021	4,627
2022	1,113
2023	806
Thereafter	6,430
Scheduled Principal Payments	23,406
Term Maturities
2019	0
2020	20,700
2021	254,875
2022	250,808
2023	276,940
Thereafter	722,041
Term Maturities	1,525,364
Total
2019	5,034
2020	26,096
2021	259,502
2022	251,921
2023	277,746
Thereafter	728,471
Total	1,548,770
Unamortized net debt premiums and issuance costs, net	(5,469)
Long-term debt	$ 1,543,301	$ 1,699,239

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