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Interest Payable, Accounts Payable and Deferred Revenue
 6 Months Ended
Jun. 30, 2015
Accounts Payable and Accrued Liabilities [Abstract]  
Interest Payable, Accounts Payable and Deferred Revenue
Interest Payable, Accounts Payable and Deferred Revenue

Interest payable, accounts payable and deferred revenue consisted of the following (in thousands):

 
June 30, 2015
 
December 31, 2014
 
 
 
 
Interest payable
$
10,198

 
$
9,656

Accounts payable and accrued liabilities
24,403

 
22,195

Deferred revenue
21,527

 
22,513

Total interest payable, accounts payable and deferred revenue
$
56,128

 
$
54,364