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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Apr. 30, 2020	Apr. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net loss		$ (25,550)	$ (36,828)
Other comprehensive (loss) income:
Changes in foreign currency translation adjustment	[1]	(152)	88
Changes in unrealized loss on cash flow hedge	[1]	(1,180)
Other comprehensive (loss) income	[1]	(1,332)	88
Comprehensive loss		$ (26,882)	$ (36,740)
[1] Tax effect was not material

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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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