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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jul. 31, 2021	Apr. 30, 2021	Jul. 31, 2020	Apr. 30, 2020	Jul. 31, 2021	Jul. 31, 2020	Jan. 31, 2021
Operating activities:
Net loss	$ (27,592)	$ (17,631)	$ (25,116)	$ (29,224)	$ (45,223)	$ (54,340)	$ (94,692)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization expense					7,933	5,187
Bad debt expense					909	2,316
Stock-based compensation expense					35,000	34,602
Amortization of operating lease right-of-use assets					4,619	6,827
Other, net					371	344
Changes in operating assets and liabilities:
Accounts receivable					37,618	26,001
Prepaid expenses and other current assets					1,681	(7,929)
Costs to obtain revenue contracts					(8,442)	3,726
Other long term assets					15	(1,191)
Accounts payable, accrued expenses and other current liabilities					(711)	(7,010)
Unearned revenue					(26,337)	(31,377)
Operating lease liabilities					(5,634)	3,744
Other long term liabilities					650	2,805
Net cash provided by (used in) operating activities					2,449	(16,295)
Investing activities:
Capital expenditures					(10,555)	(40,055)
Net cash used in investing activities					(10,555)	(40,055)
Financing activities:
Proceeds from exercise of stock options					14,439	6,651
Payments of deferred financing costs					(263)	(654)
Proceeds, net from employee stock purchase plan withholdings					3,409	3,667
Net cash provided by financing activities					17,585	9,664
Effect of exchange rate changes on cash and cash equivalents					600	1,857
Net increase (decrease) in cash and cash equivalents					10,079	(44,829)
Cash and cash equivalents at beginning of period		$ 230,411		$ 268,176	230,411	268,176	268,176
Cash and cash equivalents at end of period	$ 240,490		$ 223,347		$ 240,490	$ 223,347	$ 230,411

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