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Deferred Costs
9 Months Ended
Sep. 30, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Deferred Costs Deferred Costs
Deferred costs at September 30, 2020 and December 31, 2019 consisted of the following (in thousands):
September 30, 2020December 31, 2019
Deferred leasing costs$496,812 $466,136 
Less: accumulated amortization
(290,523)(260,853)
Deferred costs, net$206,289 $205,283