Supplemental Disclosure of Statement of Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Condensed Cash Flow Statements, Captions [Line Items]
Interest paid	$ 62,995	$ 62,914
Income taxes paid, net	1,163	788
Mortgage loan related to property sales	242,269	55,000
LCIF [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Interest paid	23,175	21,001
Income taxes paid, net	33	$ 57
Mortgage loan related to property sales	$ 242,269