Facility Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Schedule of facility operating lease expense [Abstract]
Cash basis payment	$ 90,599	$ 96,031	$ 185,203	$ 191,611
Straight-line (income) expense	(3,119)	(523)	(6,126)	3,412
Amortization of (above) below market lease, net	(1,697)	(1,733)	(3,394)	(3,466)
Amortization of deferred gain	(1,093)	(1,093)	(2,186)	(2,186)
Facility lease expense	$ 84,690	$ 92,682	$ 173,497	$ 189,371