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Property and Equipment, Net
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment, Net Property and Equipment, NetDepreciation expense for property and equipment was $11.0 million, $12.2 million, and $13.0 million for the years ended December 31, 2021, 2020 and 2019, respectively. During the years ended December 31, 2021, 2020 and 2019, we recognized an additional $0.4 million, $0.6 million, and $0.5 million, respectively, of accelerated depreciation expense for fixed assets related to vacated office spaces. This accelerated depreciation expense is included as a component of restructuring charges. See Note 11 “Restructuring Charges” for additional
information on our restructuring charges incurred in 2021, 2020 and 2019. Property and equipment, net at December 31, 2021 and 2020 consisted of the following: 
 As of December 31,
 20212020
Computers, related equipment, and software$33,682 $27,943 
Leasehold improvements40,336 39,952 
Furniture and fixtures12,023 14,126 
Aircraft6,800 7,667 
Assets under construction1,113 502 
Property and equipment93,954 90,190 
Accumulated depreciation and amortization(62,950)(61,097)
Property and equipment, net$31,004 $29,093 
In the first quarter of 2022, we completed the sale of the aircraft to a third-party. As a result of the sale, we no longer own any aircraft.