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Delivery Costs (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Other Income and Expenses [Abstract]
Shipping and classroom delivery costs	$ 4,907,000	$ 6,497,000	$ 6,985,000	$ 9,258,000

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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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