Customer Leases, as Lessor (Tables)

12 Months Ended

Dec. 31, 2014

Customer Leases, as Lessor [Abstract]

Future Minimum Lease Payments to be Received Under Non-Cancelable Operating Customer Leases

Future minimum lease payments to be received under non-cancelable operating customer leases (exclusive of recoveries of operating costs from customers) are as follows for the years ending December 31 (in thousands):

2015	$	193,310
2016		171,854
2017		137,121
2018		106,373
2019		68,669
Thereafter		215,088
Total	$	892,415