Property and Equipment, Net

12 Months Ended

Jan. 31, 2020

Property, Plant and Equipment [Abstract]

Property and equipment consisted of the following:


	January 31,
(in thousands)	2020		2019
Computer and network equipment	$	66,937	$	55,233
Software, including capitalized software development costs	33,373		27,959
Furniture and office equipment	16,752		9,511
Leasehold improvements	59,564		41,464
	176,626		134,167
Less: Accumulated depreciation	(81,228)		(66,479)
	95,398		67,688
Work in progress	32,895		8,144
	$	128,293	$	75,832

As of January 31, 2020, work in progress consisted primarily of capitalized costs of internally-developed software projects under development and leasehold improvements related to office build-out projects.

Depreciation expense associated with property and equipment was $32.5 million, $24.9 million and $21.7 million in the years ended January 31, 2020, 2019 and 2018. This included amortization expense related to capitalized internally-developed software costs of $4.1 million, $2.8 million and $3.6 million in the respective years.

We capitalized $17.1 million, $7.6 million and $2.4 million of internally developed software in the years ended January 31, 2020, 2019 and 2018. Such amounts included capitalized stock-based compensation of $4.1 million, $1.9 million and $0.1 million in the years ended January 31, 2020, 2019 and 2018.