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Accounting Pronouncements Recently Adopted (Details Textual) $ in Thousands	6 Months Ended
	Jul. 31, 2018 USD ($)
Changes To Critical Accounting Policies [Line Items]
Cumulative effect on retained earnings	$ 724
ASC 606
Changes To Critical Accounting Policies [Line Items]
Cumulative effect on retained earnings	$ 700

X

- Definition

Changes to critical accounting policies.

+ References

No definition available.

+ Details

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X

- Definition

Amount of the cumulative effect on retained earnings net of related income tax effect.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794

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