Intangible Assets and Intangible Liabilities - Schedule of Estimated Annual Amortization of Acquired Below-Market Leases, Net of Acquired Above-Market Leases (Details) $ in Thousands	Jun. 30, 2017 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2018	$ 12,558
2019	10,775
2020	8,765
2021	4,509
2022	$ 1,144