Property and Equipment

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

Property and equipment, stated at cost, at December 31, 2020 and 2019 consisted of the following (in thousands):

	2020		2019
Computers and related equipment	$	350,735	$	334,768
Furniture and equipment	2,721		1,977
Leasehold improvements	9,010		17,374
	362,466		354,119
Less: Accumulated depreciation and amortization	(205,889)		(226,302)
Total property and equipment, net	$	156,577	$	127,817

Depreciation and amortization expense was $63.8 million, $51.4 million and $41.3 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Total disposals of long-lived assets for the years ended December 31, 2020, 2019 and 2018 were $0.9 million, $0.3 million and $0.4 million, respectively.