Note 10 - Stock-based Compensation - Unvested Option Activity (Details) - Unvested Option [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2020
Outstanding beginning of period (in shares)	11
Outstanding, weighted average grant date fair value (in dollars per share)	$ 7
Outstanding at beginning of period, aggregate intrinsic value		$ 19	$ 4
Granted, number (in shares)
Granted, weighted average grant date fair value (in dollars per share)
Vested, number (in shares)	(6)
Vested, weighted average grant date fair value (in dollars per share)
Canceled options during the year (in shares)	(2)
Expired or forfeited, weighted average grant date fair value (in dollars per share)	$ 7.10
Outstanding end of period (in shares)	3	11
Outstanding, weighted average grant date fair value (in dollars per share)	$ 7	$ 7	$ 7.33

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)-(4)
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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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-Publisher FASB
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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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Weighted average grant-date fair value of non-vested options forfeited.

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Weighted average grant-date fair value of non-vested options outstanding.

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