Property and Equipment, Net

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property and equipment, net, consisted of the following (in thousands):


	As of December 31,
	2020		2021
Computer equipment	$	55,972	$	56,513
Computer software and capitalized internal-use software	163,702		175,129
Office furniture and equipment	47,596		43,169
Leasehold improvements	243,110		213,950
Buildings and land	16,844		16,844
	527,224		505,605
Less: Accumulated depreciation and amortization	(267,851)		(379,194)
	259,373		126,411
Construction in progress	10,821		30,174
Total property and equipment, net	$	270,194	$	156,585

Depreciation expense related to property and equipment for the years ended December 31, 2019, 2020, and 2021 was $57.2 million, $67.2 million, and $85.6 million, respectively. During the years ended December 31, 2019, 2020, and 2021, amortization of capitalized internal-use software costs was $10.9 million, $22.5 million, and $66.3 million, respectively.

The net carrying value of capitalized internal-use software as of December 31, 2020 and 2021 was $76.6 million and $21.0 million, respectively.