Facility Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Schedule of facility operating lease expense [Abstract]
Cash basis payment	$ 94,604	$ 95,580
Straight-line (income) expense	(3,007)	3,935
Amortization of (above) below market lease, net	(1,697)	(1,733)
Amortization of deferred gain	(1,093)	(1,093)
Facility lease expense	$ 88,807	$ 96,689