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Acquired Intangible Assets and Goodwill
 6 Months Ended
Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Acquired Intangible Assets and Goodwill Acquired Intangible Assets and Goodwill
Acquired Intangible Assets—The following table presents the gross carrying amount and accumulated amortization of intangible assets:
June 30, 2024December 31, 2023
Weighted-Average Useful Lives (Years)GrossAccumulated AmortizationNetGrossAccumulated AmortizationNet
Trade names9.3$82,690 $(29,007)$53,683 $82,690 $(24,290)$58,400 
Developed technology
3.3
66,340 (65,550)790 66,340 (59,883)6,457 
Customer relationships1081,360 (27,001)54,359 81,360 (22,933)58,427 
Total$230,390 $(121,558)$108,832 $230,390 $(107,106)$123,284 

Amortization expense amounted to $4,705 and $9,747 for the three months ended June 30, 2024 and 2023, respectively and $14,452 and $19,494 for the six months ended June 30, 2024 and 2023, respectively.

The following table presents our estimate of remaining amortization expense for intangible assets that existed as of June 30, 2024:
2024, excluding the six months ended June 30, 2024
$9,289 
202517,618 
202617,380 
202715,633 
202815,050 
Thereafter33,862 
Estimated remaining amortization expense$108,832 
Goodwill—The following table presents the carrying amount of goodwill by reportable segment:
Real Estate ServicesRentals
Mortgage
Total
Balance as of June 30, 2024 and December 31, 2023
$250,231 $159,151 $51,967 $461,349