Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2017	Jan. 31, 2017
Current assets:
Cash and cash equivalents	$ 168,757	$ 183,675
Marketable securities	367,218	362,986
Accounts receivable, net of allowance of $2,000 and $1,744 as of January 31, 2017 and April 30, 2017	132,134	168,978
Inventory	39,478	23,498
Deferred commissions, current	16,409	15,787
Prepaid expenses and other current assets	28,637	25,157
Total current assets	752,633	780,081
Property and equipment, net	82,293	81,695
Intangible assets, net	6,184	6,560
Deferred income taxes, non-current	795	844
Other assets, non-current	30,970	30,565
Total assets	872,875	899,745
Current liabilities:
Accounts payable	51,015	52,719
Accrued compensation and benefits	24,714	39,252
Accrued expenses and other liabilities	15,981	21,697
Deferred revenue, current	159,094	158,095
Liability related to early exercised stock options	1,064	1,362
Total current liabilities	251,868	273,125
Deferred revenue, non-current	152,431	145,031
Other liabilities, non-current	3,268	3,159
Total liabilities	407,567	421,315
Commitments and contingencies (Note 5)
Stockholders’ equity:
Preferred stock, par value of $0.0001 per share— 20,000 shares authorized as of January 31, 2017 and April 30, 2017; no shares issued and outstanding as of January 31, 2017 and April 30, 2017	0	0
Class A and Class B common stock, par value of $0.0001 per share— 2,250,000 (Class A 2,000,000, Class B 250,000) shares authorized as of January 31, 2017 and April 30, 2017; 204,364 (Class A 87,027, Class B 117,337) and 208,119 (Class A 93,271, Class B 114,848) shares issued and outstanding as of January 31, 2017 and April 30, 2017	21	20
Additional paid-in capital	1,330,586	1,281,452
Accumulated other comprehensive loss	(445)	(562)
Accumulated deficit	(864,854)	(802,480)
Total stockholders’ equity	465,308	478,430
Total liabilities and stockholders’ equity	$ 872,875	$ 899,745