Facility Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Schedule of facility operating lease expense [Abstract]
Cash basis payment	$ 90,303	$ 96,170	$ 275,506	$ 287,781
Straight-line (income) expense	(3,078)	(859)	(9,204)	2,553
Amortization of (above) below market lease, net	(1,697)	(1,699)	(5,091)	(5,165)
Amortization of deferred gain	(1,091)	(1,093)	(3,277)	(3,279)
Facility lease expense	$ 84,437	$ 92,519	$ 257,934	$ 281,890