Note 2 - Preliminary Fair Value Measurement (Details) - USD ($)	Aug. 27, 2016	Jun. 08, 2016	Nov. 28, 2015
Cyberbond LLC [Member]
Current assets	$ 4,410,000
Property, plant and equipment	1,460,000
Goodwill	38,152,000	$ 38,152,000
Other assets	673,000
Current liabilities	(1,526,000)
Long-term liabilities	(653,000)
Total purchase price	42,516,000
Goodwill	$ 393,251,000		$ 354,204,000

Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount of liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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