|9 Months Ended|
Sep. 30, 2021
|Goodwill and Intangible Assets Disclosure [Abstract]|
|Intangible Assets||Intangible Assets
The gross amounts and accumulated amortization of acquired identifiable intangible assets with finite useful lives as of September 30, 2021 and December 31, 2020, included in intangible assets, net in the accompanying condensed consolidated balance sheets, are as follows:
Amortization of acquired intangible assets with finite useful lives is included in general and administrative expenses and was $3.7 million and $1.8 million for the three months ended September 30, 2021 and 2020, respectively, and $9.9 million and $4.7 million for the nine months ended September 30, 2021 and 2020, respectively.
Future estimated amortization expense for acquired identifiable intangible assets is as follows:
The entire disclosure for all or part of the information related to intangible assets.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef