Note 1 - Summary of Significant Accounting Policies and Other Information (Details Textual) - USD ($) $ in Thousands	3 Months Ended
Apr. 01, 2017	Apr. 02, 2016	Oct. 02, 2016
Income Tax Expense (Benefit)	$ 8,537	$ 7,788
Accounting Standards Update 2016-09 [Member]
Income Tax Expense (Benefit)	$ (500)
Relay Unit [Member]
Intangible Assets, Net (Including Goodwill)			$ 41,400
Excess Of Fair Value Over Carrying Value Of Invested Capital			15.00%

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a),(b)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration