Facility Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Schedule of facility operating lease expense [Abstract]
Cash basis payment	$ 96,031	$ 92,352	$ 191,611	$ 187,074
Straight-line (income) expense	(523)	1,919	3,412	4,720
Amortization of (above) below market lease, net	(1,733)	(1,840)	(3,466)	(3,799)
Amortization of deferred gain	(1,093)	(1,093)	(2,186)	(2,186)
Facility lease expense	$ 92,682	$ 91,338	$ 189,371	$ 185,809