Note 13 Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Apr. 02, 2016	Apr. 02, 2016	Sep. 29, 2018	Sep. 30, 2017	Oct. 01, 2016
Business Acquisition [Line Items]
Consideration Transferred		$ 90,317
Cash Paid for Business Combination		60,000
Bargain Purchase Gain, Net of Tax		1,642
Discounted value of notes issued		30,000	$ 0	$ 0	$ 30,105
Current assets	$ 33,198	33,198
Noncurrent assets, including identifiable intangible assets of $7.3 million and goodwill of $30.8 million	62,632	62,632
Current liabilities	(3,146)	(3,146)
Noncurrent liabilities	(725)	(725)
Total	$ 91,959	91,959
Cash		1,300
Goodwill			$ 28,516	$ 59,126	$ 59,126
Manufacturing Facility [Member]
Business Acquisition [Line Items]
Effective Date of Acquisition	Feb. 01, 2016
Bargain Purchase Gain, Net of Tax		1,600
Bargain Purchase Gain, Net of Tax Description			The bargain purchase gain resulted from the discount attributable to financing a portion of the purchase price with the acquiree using a non-interest bearing promissory note.
Discounted value of notes issued	$ 12,000
Storage Software Provider [Member]
Business Acquisition [Line Items]
Intangible Assets, Other than Goodwill	7,300	7,300
Goodwill Description			Goodwill arising from the acquisition is tax deductible and reflects the Company's expectation that the acquisition will enable the Company to broaden its relationships with certain of its existing key customers, realize synergies associated with leveraging the acquisition to develop other software solutions to become a provider of a full storage systems solution, and leverage the acquiree's knowledgeable and experienced workforce.
Goodwill	$ 30,800	$ 30,800
Storage Software Provider [Member] | Minimum
Business Acquisition [Line Items]
Intangible Asset, Useful Life		3 years
Storage Software Provider [Member] | Maximum
Business Acquisition [Line Items]
Intangible Asset, Useful Life		4 years