Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Oct. 31, 2019	Jan. 31, 2019
Current assets:
Cash and cash equivalents		$ 892,581	$ 550,971
Short-term investments		602,407	539,190
Accounts receivable, net of allowance for doubtful accounts of $367 and $468, respectively		116,874	303,465
Unbilled accounts receivable		30,899	18,122
Prepaid expenses and other current assets		15,360	21,666
Total current assets		1,658,121	1,433,414
Property and equipment, net	[1]	53,290	54,966
Deferred costs, net		29,873	30,869
Lease right-of-use-assets	[1]	24,055
Goodwill		95,804	95,804
Intangible assets, net		19,948	24,521
Deferred income taxes, noncurrent		6,455	5,938
Other long-term assets		12,895	8,254
Total assets		1,900,441	1,653,766
Current liabilities:
Accounts payable		9,914	9,110
Accrued compensation and benefits		15,977	15,324
Accrued expenses and other current liabilities		15,707	16,145
Income tax payable		7,195	4,086
Deferred revenue		250,674
Deferred revenue			356,357
Lease liabilities	[1]	7,430
Total current liabilities		306,897	401,022
Deferred income taxes, noncurrent		9,042	6,095
Lease liabilities, noncurrent	[1]	19,882
Other long-term liabilities		6,055	8,900
Total liabilities		341,876	416,017
Commitments and contingencies
Stockholders’ equity:
Additional paid-in capital		704,915	617,623
Accumulated other comprehensive income		173	928
Retained earnings	[1]	853,476	619,197
Total stockholders’ equity		1,558,565	1,237,749
Total liabilities and stockholders’ equity		1,900,441	1,653,766
Class A common stock
Stockholders’ equity:
Class A common stock, $0.00001 par value; 800,000,000 shares authorized, 131,955,372 and 125,980,019 issued and outstanding at October 31, 2019 and January 31, 2019, respectively		1	1
Class B common stock
Stockholders’ equity:
Class A common stock, $0.00001 par value; 800,000,000 shares authorized, 131,955,372 and 125,980,019 issued and outstanding at October 31, 2019 and January 31, 2019, respectively		$ 0	$ 0

[1] We adopted Accounting Standards Update (ASU) 2016-02, “Leases” (Topic 842) using the modified retrospective method as of February 1, 2019 and elected the transition option that allows us not to restate the comparative periods in our financial statements in the year of adoption.