Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies.

Schedule of ground lease expense and office lease expense

	For the Year Ended
	December 31,
	2016		2015		2014
Ground lease expense	$	38,764	$	38,851	$	39,898
Office lease expense		4,105		4,067		4,577

Schedule of future minimum lease payments due under leases, excluding applicable extension options and any sublease income

Future minimum lease payments due under these leases for years ending December 31, excluding applicable extension options and any sublease income, are as follows:

2017	$	30,669
2018		30,570
2019		26,963
2020		24,327
2021		23,815
Thereafter		675,795
	$	812,139