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Supplemental Disclosure of Statement of Cash Flow Information (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Condensed Cash Flow Statements, Captions [Line Items]      
Interest paid $ 50,691 $ 62,995  
Income taxes paid, net 1,687 1,163  
LCIF [Member]      
Condensed Cash Flow Statements, Captions [Line Items]      
Interest paid 11,527 23,570  
Income taxes paid, net $ 121 33  
Interests Sold [Member]      
Condensed Cash Flow Statements, Captions [Line Items]      
Assumption of debt   $ 242,269  
Interests Sold [Member] | LCIF [Member]      
Condensed Cash Flow Statements, Captions [Line Items]      
Assumption of debt     $ 242,269