CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 31, 2018	Jan. 31, 2018
Current assets:
Cash and cash equivalents	$ 122,771	$ 61,902
Short-term investments	399,906	217,072
Accounts receivable, net of allowance for doubtful accounts of $1,651 and $1,238 as of July 31, 2018 and January 31, 2018, respectively	38,340	46,872
Deferred commissions	14,857	11,820
Prepaid expenses and other current assets	7,832	5,884
Total current assets	583,706	343,550
Property and equipment, net	70,374	59,557
Goodwill	1,700	1,700
Acquired intangible assets, net	1,185	1,627
Deferred tax assets	300	326
Other assets	6,665	8,436
Total assets	663,930	415,196
Current liabilities:
Accounts payable	2,256	2,261
Accrued compensation and benefits	14,981	17,433
Other accrued liabilities	13,473	8,423
Deferred revenue	125,526	114,500
Total current liabilities	156,236	142,617
Deferred rent, non-current	1,842	925
Deferred tax liability, non-current	39	18
Deferred revenue, non-current	20,235	22,930
Convertible senior notes, net	210,553	0
Other liabilities, non-current	66,401	55,213
Total liabilities	455,306	221,703
Commitments and contingencies (Note 5)
Stockholders’ equity:
Additional paid-in capital	714,401	638,680
Treasury stock, 99,371 shares (repurchased at an average of $13.27 per share) as of July 31, 2018 and January 31, 2018	(1,319)	(1,319)
Accumulated other comprehensive loss	(340)	(159)
Accumulated deficit	(504,170)	(443,760)
Total stockholders’ equity	208,624	193,493
Total liabilities and stockholders’ equity	663,930	415,196
Class A Common Stock
Stockholders’ equity:
Common stock	30	13
Class B Common Stock
Stockholders’ equity:
Common stock	$ 22	$ 38