Rent Expense (Tables)

3 Months Ended

Mar. 31, 2018

Leases [Abstract]

Schedule of future minimum lease obligations under non-cancelable ground leases

As of March 31, 2018, the future minimum lease obligations under non-cancelable parking, air, ground, and office leases were as follows (in thousands):

2018	$	1,938
2019	2,577
2020	2,522
2021	2,537
2022	2,558
Thereafter	116,728
Total	$	128,860