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Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended
	Apr. 30, 2018	Apr. 30, 2017
Business And Significant Accounting Policies [Line Items]
Shipping, Handling and Transportation Costs	$ 600,000	$ 500,000
Foreign Currency Transaction Gain (Loss), Realized	$ 243,000	$ 65,000

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Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 50
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Cost incurred during the reporting period in transporting goods and services to customers. Includes freight-out costs.

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