Note 7 - Accounting for Share-based Compensation (Details Textual) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Feb. 29, 2020	Mar. 02, 2019
Fair Value Options Granted During Period Value Share-based Compensation	$ 9,961	$ 9,331
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	346	910
Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised, Total	907	$ 1,065
Total Fair Value of Nonvested Restricted Stock	$ 21,003
Repurchased Restricted Stock Shares	66,598	57,917
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount	$ 13,766
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	1 year 1 month 6 days
Restricted Stock Units (RSUs) [Member]
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount	$ 14,654
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	1 year 4 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 9,667	$ 7,846
Selling, General and Administrative Expenses [Member]
Share-based Payment Arrangement, Expense	$ 4,703	$ 5,906

Fair value of options granted during the period.

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Shares of restricted stock repurchased during the period.

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

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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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Amount of cost to be recognized for option under share-based payment arrangement.

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Amount of cash inflow from issuance of shares under share-based payment arrangement. Includes, but is not limited to, option exercised.

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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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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