Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Oct. 31, 2020	Jan. 31, 2020
Current assets:
Cash and cash equivalents	$ 634,265	$ 476,733
Short-term investments	956,167	610,015
Accounts receivable, net of allowance for doubtful accounts of $516 and $617, respectively	183,435	389,690
Unbilled accounts receivable	53,235	32,817
Prepaid expenses and other current assets	25,895	21,869
Total current assets	1,852,997	1,531,124
Property and equipment, net	54,352	54,752
Deferred costs, net	35,472	35,585
Lease right-of-use assets	52,824	49,132
Goodwill	436,029	438,529
Intangible assets, net	119,165	134,601
Deferred income taxes, noncurrent	15,689	11,870
Other long-term assets	17,113	16,184
Total assets	2,583,641	2,271,777
Current liabilities:
Accounts payable	21,324	19,420
Accrued compensation and benefits	28,906	25,619
Accrued expenses and other current liabilities	22,391	21,620
Income tax payable	2,555	5,613
Deferred revenue	331,166	468,887
Lease liabilities	11,050	10,013
Total current liabilities	417,392	551,172
Deferred income taxes, noncurrent	1,004	2,417
Lease liabilities, noncurrent	47,965	44,815
Other long-term liabilities	10,901	7,779
Total liabilities	477,262	606,183
Commitments and contingencies
Stockholders’ equity:
Additional paid-in capital	906,137	745,475
Accumulated other comprehensive income	3,502	460
Retained earnings	1,196,738	919,658
Total stockholders’ equity	2,106,379	1,665,594
Total liabilities and stockholders’ equity	2,583,641	2,271,777
Class A common stock
Stockholders’ equity:
Common stock	2	1
Class B common stock
Stockholders’ equity:
Common stock	$ 0	$ 0