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Note 6 - Stock-based Compensation (Details Textual) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019	Feb. 01, 2020
Common Stock, Shares Authorized (in shares)	50,000,000	50,000,000	50,000,000	50,000,000	50,000,000	50,000,000
Options and Restricted Stock [Member]
Share-based Payment Arrangement, Expense		$ 0.5	$ 0.4	$ 1.3	$ 1.8
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 2.8	$ 2.8		$ 2.8
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)				1 year 3 months 18 days
Time-based and Performance-based Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value				$ 2.3	$ 2.1
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	3 years
Incentive Plan 2020 [Member]
Common Stock, Shares Authorized (in shares)	1,000,000	1,000,000		1,000,000

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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