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Acquired Intangible Assets and Goodwill
 3 Months Ended
Mar. 31, 2022
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:

March 31, 2022December 31, 2021
Weighted-Average Useful Lives (Years)GrossAccumulated AmortizationNetGrossAccumulated AmortizationNet
Trade names10$71,040 $(7,780)$63,260 $71,040 $(6,004)$65,036 
Developed technology
3.3
63,480 (22,402)41,078 63,480 (17,285)46,195 
Customer relationships1081,360 (8,695)72,665 81,360 (6,662)74,698 
Total$215,880 $(38,877)$177,003 $215,880 $(29,951)$185,929 

Amortization expense amounted to $8,926 and $122 for the three months ended March 31, 2022 and 2021, respectively.

The following table presents our estimate of remaining amortization expense for intangible assets that existed as of March 31, 2022:

2022, excluding the three months ended March 31, 2022
$26,779 
202335,705 
202420,458 
202515,050 
202615,050 
Thereafter63,961 
Estimated remaining amortization expense$177,003 

Goodwill—The following table presents the carrying amount of goodwill by reportable segment:

Real Estate ServicesRentalsTotal
Balance as of March 31, 2022 and December 31, 2021
$250,231 $159,151 $409,382