CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021
Cash flows from operating activities
Net loss	$ (77,294,000)	$ (63,992,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	3,787,000	3,251,000
Stock-based compensation	83,566,000	50,914,000
Amortization of debt issuance costs	840,000	1,427,000
Amortization of finance right-of-use assets	994,000	994,000
Amortization of operating right-of-use assets	2,018,000	1,522,000
Deferred income taxes	(61,000)	(1,585,000)
Accretion of discount on short-term investments	2,231,000	1,527,000
Gain on non-marketable securities	(1,751,000)	0
Unrealized foreign exchange loss	581,000	315,000
Change in operating assets and liabilities:
Accounts receivable	28,740,000	35,145,000
Prepaid expenses and other current assets	(3,293,000)	(9,027,000)
Deferred commissions	(4,722,000)	(5,882,000)
Other long-term assets	(358,000)	23,000
Accounts payable	1,023,000	224,000
Accrued liabilities	(23,016,000)	(17,152,000)
Operating lease liabilities	(2,192,000)	(1,027,000)
Deferred revenue	152,000	9,749,000
Other liabilities, non-current	329,000	3,791,000
Net cash provided by operating activities	11,574,000	10,217,000
Cash flows from investing activities
Purchases of property and equipment	(2,538,000)	(627,000)
Acquisition, net of cash acquired	0	(4,469,000)
Investment in non-marketable securities	(1,119,000)	(936,000)
Proceeds from maturities of marketable securities	75,000,000	100,000,000
Purchases of marketable securities	(100,146,000)	(101,479,000)
Net cash used in investing activities	(28,803,000)	(7,511,000)
Cash flows from financing activities
Proceeds from exercise of stock options	1,656,000	3,539,000
Principal repayments of finance leases	(595,000)	(1,199,000)
Repayments of convertible senior notes attributable to principal	0	(27,594,000)
Net cash provided by (used in) financing activities	1,061,000	(25,254,000)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(1,467,000)	(94,000)
Net decrease in cash, cash equivalents and restricted cash	(17,635,000)	(22,642,000)
Cash, cash equivalents and restricted cash, beginning of period	474,420,000	430,222,000
Cash, cash equivalents and restricted cash, end of period	456,785,000	407,580,000
Cash paid during the period for:
Income taxes, net of refunds	1,589,000	995,000
Interest expense, net	755,000	819,000
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:
Cash and cash equivalents	456,275,000	407,055,000
Restricted cash, non-current	510,000	525,000
Total cash, cash equivalents and restricted cash	$ 456,785,000	$ 407,580,000