Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Current assets:
Cash and cash equivalents	$ 183,675	$ 604,742
Marketable securities	362,986	0
Accounts receivable, net of allowance of $944 and $2,000 as of January 31, 2016 and 2017	168,978	126,324
Inventory	23,498	20,649
Deferred commissions, current	15,787	15,703
Prepaid expenses and other current assets	25,157	20,652
Total current assets	780,081	788,070
Property and equipment, net	81,695	52,629
Intangible assets, net	6,560	6,980
Deferred income taxes, non-current	844	536
Other assets, non-current	30,565	22,568
Total assets	899,745	870,783
Current liabilities:
Accounts payable	52,719	38,187
Accrued compensation and benefits	39,252	32,995
Accrued expenses and other liabilities	21,697	14,076
Deferred revenue, current	158,095	94,514
Liability related to early exercised stock options	1,362	4,760
Total current liabilities	273,125	184,532
Deferred revenue, non-current	145,031	121,690
Other liabilities, non-current	3,159	1,207
Total liabilities	421,315	307,429
Commitments and contingencies (Note 5)
Stockholders’ equity:
Preferred stock, par value of $0.0001 per share— 20,000 shares authorized as of January 31, 2016 and 2017; no shares issued and outstanding as of January 31, 2016 and 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, 2016 and 2017; 190,509 (Class A 28,769, Class B 161,740) and 204,364 (Class A 87,027, Class B 117,337) shares issued and outstanding as of January 31, 2016 and 2017	20	19
Additional paid-in capital	1,281,452	1,118,670
Accumulated other comprehensive loss	(562)	0
Accumulated deficit	(802,480)	(555,335)
Total stockholders’ equity	478,430	563,354
Total liabilities and stockholders’ equity	$ 899,745	$ 870,783