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Note 14 - Correction of Immaterial Errors (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Apr. 30, 2020	Jan. 31, 2020
Retained Earnings (Accumulated Deficit), Ending Balance		$ (3,236)	$ (715)
Errors Relating to Accounting for Leases with Escalation Clauses [Member]
Cumulative Effect on Retained Earnings, Net of Tax, Total	$ 600
Retained Earnings (Accumulated Deficit), Ending Balance	$ (600)

X

- Definition

Amount of cumulative adjustment for error corrections.

+ References

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- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

+ References

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