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Deferred Costs
3 Months Ended
Mar. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Deferred Costs
Deferred Costs
Deferred costs at March 31, 2018 and December 31, 2017 consisted of the following (in thousands):
 
March 31, 2018
 
December 31, 2017
Deferred leasing costs
$
415,824

 
$
443,341

Less: accumulated amortization
(220,267
)
 
(217,140
)
Deferred costs, net
$
195,557

 
$
226,201