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Accounts Payable and Accrued Expenses
6 Months Ended
Jun. 30, 2018
Payables and Accruals [Abstract]  
Accounts Payable and Accrued Expenses
Accounts Payable and Accrued Expenses
Accounts payable and accrued expenses consisted of the following as of June 30, 2018 and December 31, 2017 (amounts in thousands):
 
June 30, 2018
 
December 31, 2017
Accrued capital expenditures
$
96,439

 
$
71,769

Accounts payable and accrued expenses
27,655

 
32,509

Interest rate swap agreements liability

 
436

Accrued interest payable
5,161

 
5,687

Due to affiliated companies
689

 
448

     Total accounts payable and accrued expenses
$
129,944

 
$
110,849