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Real Estate Investments
 6 Months Ended
Jun. 30, 2018
Real Estate [Abstract]  
REAL ESTATE INVESTMENTS
REAL ESTATE INVESTMENTS
The carrying value of real estate investments is as follows:

 
June 30, 2018
 
December 31, 2017
 
(in thousands)
Land
$
4,143,513

 
$
4,143,513

Buildings, building improvements, land improvements and integral equipment
8,440,785

 
8,512,334

 
12,584,298

 
12,655,847

Less: Accumulated depreciation
(2,703,640
)
 
(2,633,909
)
 
$
9,880,658

 
$
10,021,938