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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (15,369)	$ (14,470)	$ (35,203)	$ (29,069)
Other comprehensive income (loss):
Net unrealized gains (losses) on investments, net of tax	(162)	1	(848)	(1)
Total comprehensive loss	$ (15,531)	$ (14,469)	$ (36,051)	$ (29,070)

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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