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Note 6 - Stock-based Compensation (Details Textual) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Apr. 30, 2019	Nov. 02, 2019	Nov. 03, 2018	Nov. 02, 2019	Nov. 03, 2018	Feb. 02, 2019	Dec. 30, 2017	May 11, 2017
Minimum [Member]
Performance-based Shares, Payout Opportunity, Percentage		25.00%		25.00%
Maximum [Member]
Performance-based Shares, Payout Opportunity, Percentage		200.00%		200.00%
Options and Restricted Stock [Member]
Share-based Payment Arrangement, Expense		$ 0.4	$ 0.9	$ 1.8	$ 2.6
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		$ 3.2		$ 3.2
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition				1 year 109 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				$ 2.1	$ 2.2
Performance Shares [Member] | Vesting at End of Three-year Performance Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Performance Period	3 years					3 years	3 years
The 2017 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized								1,000,000

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- Definition

The percentage of payout from performance based shares.

+ References

No definition available.

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- Definition

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

+ References

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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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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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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