Operating Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) years	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Leases [Abstract]
Rental properties, length of lease, minimum (in years) | years	1
Rental properties, length of lease, maximum (in years) | years	33
Operating Leases, Future Minimum Payments Receivable [Abstract]
2017	$ 398,938
2018	382,923
2019	360,745
2020	340,521
2021	326,276
Thereafter	2,989,155
Total	4,798,558
Rental expense	681	$ 556	$ 521
Operating Leases, Future Minimum Payments Due [Abstract]
2017	856
2018	856
2019	856
2020	856
2021	884
Thereafter	4,592
Total	$ 8,900