Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2020	Jan. 31, 2020
Current assets:
Cash and cash equivalents	$ 720,776	$ 476,733
Short-term investments	660,199	610,015
Accounts receivable, net of allowance for doubtful accounts of $192 and $617, respectively	235,923	389,690
Unbilled accounts receivable	37,269	32,817
Prepaid expenses and other current assets	21,105	21,869
Total current assets	1,675,272	1,531,124
Property and equipment, net	52,886	54,752
Deferred costs, net	34,176	35,585
Lease right-of-use-assets	46,923	49,132
Goodwill	438,529	438,529
Intangible assets, net	129,403	134,601
Deferred income taxes, noncurrent	11,701	11,870
Other long-term assets	15,729	16,184
Total assets	2,404,619	2,271,777
Current liabilities:
Accounts payable	15,041	19,420
Accrued compensation and benefits	27,064	25,619
Accrued expenses and other current liabilities	23,405	21,620
Income tax payable	4,441	5,613
Deferred revenue	470,262	468,887
Lease liabilities	10,127	10,013
Total current liabilities	550,340	551,172
Deferred income taxes, noncurrent	1,673	2,417
Lease liabilities, noncurrent	42,430	44,815
Other long-term liabilities	9,140	7,779
Total liabilities	603,583	606,183
Commitments and contingencies
Stockholders’ equity:
Additional paid-in capital	792,660	745,475
Accumulated other comprehensive income	2,146	460
Retained earnings	1,006,228	919,658
Total stockholders’ equity	1,801,036	1,665,594
Total liabilities and stockholders’ equity	2,404,619	2,271,777
Class A common stock
Stockholders’ equity:
Common stock	2	1
Class B common stock
Stockholders’ equity:
Common stock	$ 0	$ 0