Leases - Schedule of Future Minimum Rental Revenues and Payments for Operating and Capital Leases (Details) $ in Thousands	Sep. 30, 2018 USD ($)
Minimum Rental Revenues
2018 (Remainder)	$ 43,085
2019	179,408
2020	167,449
2021	148,797
2022	130,052
Thereafter	576,090
Total	1,244,881
Minimum Rental Payments
2018 (Remainder)	1,216
2019	4,775
2020	4,571
2021	4,354
2022	4,404
Thereafter	184,652
Total	$ 203,972