Property and Equipment

9 Months Ended

Sep. 30, 2021

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, 2021		December 31, 2020
Leasehold improvements	Shorter of lease term or economic life	$	33,467	$	29,558
Website and software development costs	2 - 3	46,014		33,278
Computer and office equipment	3 - 5	13,154		7,765
Software	3	1,871		1,858
Furniture	7	7,945		7,450
Property and equipment, gross		102,451		79,909
Accumulated depreciation and amortization		(54,776)		(41,614)
Construction in progress		7,860		5,693
Property and equipment, net		$	55,535	$	43,988

Depreciation and amortization expense for property and equipment amounted to $5,399 and $3,594 for the three months ended September 30, 2021 and 2020, respectively, and $14,369 and $10,215 for the nine months ended September 30, 2021 and 2020, respectively. We capitalized website and software development costs, including stock-based compensation, of $4,727 and $2,773 for the three months ended September 30, 2021 and 2020, respectively, and $13,137 and $8,286 for the nine months ended September 30, 2021 and 2020, respectively.