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Supplemental Disclosure of Statement of Cash Flow Information (Details) - USD ($)
$ in Thousands
1 Months Ended 6 Months Ended
Apr. 30, 2016
Jun. 30, 2016
Jun. 30, 2015
Condensed Cash Flow Statements, Captions [Line Items]      
Interest paid   $ 44,641 $ 45,964
Income taxes paid, net   855 877
Mortgage loan related to property sales $ 29,193    
LCIF [Member]      
Condensed Cash Flow Statements, Captions [Line Items]      
Interest paid   15,483 14,146
Income taxes paid, net   $ 58 $ 113
Mortgage loan related to property sales $ 29,193