Rental Property Revenues (Details) $ in Thousands	Dec. 31, 2015 USD ($)
Leases [Abstract]
Operating Leases, Future Minimum Payments Receivable, Current	$ 217,863
Operating Leases, Future Minimum Payments Receivable, in Two Years	219,458
Operating Leases, Future Minimum Payments Receivable, in Three Years	217,711
Operating Leases, Future Minimum Payments Receivable, in Four Years	202,868
Operating Leases, Future Minimum Payments Receivable, in Five Years	174,144
Thereafter	639,051
Total Rentals	$ 1,671,095