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Delivery Costs (Details) - USD ($)	3 Months Ended
	Apr. 30, 2021	Apr. 30, 2020
Other Income and Expenses [Abstract]
Shipping and classroom delivery costs	$ 2,921,000	$ 2,078,000

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- References

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- Definition

Shipping And Classroom Delivery Costs

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No definition available.

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Period Type:	duration