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Property and Equipment
9 Months Ended
Sep. 30, 2023
Property, Plant and Equipment [Abstract]  
Property and Equipment Property and Equipment
The components of property and equipment were as follows:
Useful Lives (Years)September 30, 2023December 31, 2022
Leasehold improvementsShorter of lease term or economic life$29,683 $32,262 
Website and software development costs
3 - 5
72,409 62,963 
Computer and office equipment
3 - 5
19,837 19,702 
Software31,868 1,871 
Furniture77,696 7,911 
Property and equipment, gross131,493 124,709 
Accumulated depreciation and amortization(88,427)(76,597)
Construction in progress5,339 6,827 
Property and equipment, net$48,405 $54,939 
The following table summarizes depreciation and amortization and capitalized software development costs:
Three Months Ended September 30,Nine Months Ended September 30,
2023202220232022
Depreciation and amortization for property and equipment$4,550 $5,914 $19,113 $17,238 
Capitalized software development costs, including stock-based compensation3,854 4,583 12,700 14,874 

Depreciation and amortization declined in the three months ended September 30, 2023 due to the change in estimated useful lives of our website and internally developed software. Refer to Note 1 for further details.