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Deferred Costs (Tables)
12 Months Ended
Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of Deferred Costs
Deferred costs at December 31, 2020 and 2019 consisted of the following (in thousands):
December 31,
20202019
Deferred leasing costs$447,002 $466,136 
Less: accumulated amortization
(269,834)(260,853)
Deferred costs, net$177,168 $205,283