CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
Apr. 30, 2018	Apr. 30, 2017
Cash flows from operating activities
Net loss	$ (29,164)	$ (19,690)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	817	897
Stock-based compensation	7,508	4,454
Deferred income taxes	4	63
Change in fair value of warrant liability	0	(100)
Change in operating assets and liabilities:
Accounts receivable	14,312	4,755
Prepaid expenses and other current assets	(3,246)	(2,953)
Deferred commissions	(576)	749
Other long-term assets	(70)	(640)
Accounts payable	(639)	1,154
Deferred rent	472	(113)
Accrued liabilities	(1,967)	(3,041)
Deferred revenue	4,500	2,744
Net cash used in operating activities	(8,049)	(11,721)
Cash flows from investing activities
Purchases of property and equipment	(367)	(712)
Proceeds from maturities of marketable securities	58,000	47,230
Purchases of marketable securities	0	(64,620)
Net cash provided by (used in) investing activities	57,633	(18,102)
Cash flows from financing activities
Proceeds from exercise of stock options, including early exercised stock options	288	4,650
Repurchase of early exercised stock options	(152)	(4)
Net cash provided by financing activities	136	4,646
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(8)	67
Net increase (decrease) in cash, cash equivalents, and restricted cash	49,712	(25,110)
Cash, cash equivalents, and restricted cash, beginning of period	62,427	69,412
Cash, cash equivalents, and restricted cash, end of period	112,139	44,302
Supplemental cash flow disclosure of noncash investing and financing activities
Vesting of early exercised stock options	533	216
Costs related to initial public offering included in accounts payable and accrued liabilities	0	650
Construction in progress related to build-to-suit lease obligations	4,225	0
Reconciliation of cash, cash equivalents, and restricted cash within the condensed consolidated balance sheets, end of period, to the amounts shown in the statements of cash flows above:
Total cash, cash equivalents and restricted cash	$ 62,427	$ 69,412

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