Note 3 - Restructuring Actions - Restructuring Charges (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Aug. 31, 2019	Sep. 01, 2018	Aug. 31, 2019	Sep. 01, 2018	Dec. 01, 2018
Expenses incurred	$ 2,902	$ 2,803	$ 5,639	$ 5,956	$ 8,881
Cost of Sales [Member]
Expenses incurred	287	1,939	1,281	3,127
Selling, General and Administrative Expenses [Member]
Expenses incurred	$ 2,615	$ 864	$ 4,358	$ 2,829

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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