Leases - Lease Obligations (Details) $ in Thousands	Jun. 30, 2017 USD ($)
Minimum Rental Revenues
2017 (Remainder)	$ 77,973
2018	162,628
2019	156,020
2020	144,613
2021	130,356
Thereafter	686,126
Total	1,357,716
Minimum Rental Payments
2017 (Remainder)	2,085
2018	4,187
2019	4,207
2020	4,106
2021	4,240
Thereafter	189,093
Total	$ 207,918