Annual report pursuant to Section 13 and 15(d)

The Company and Its Significant Accounting Policies Concentrations (Details)

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The Company and Its Significant Accounting Policies Concentrations (Details)
12 Months Ended
Sep. 24, 2017
Sep. 25, 2016
Sep. 27, 2015
Customer/licensee one [Member] | Customer Concentration Risk [Member] | Revenue [Member]      
Concentration Risk [Line Items]      
Percentage of total 18.00% 24.00% 25.00%
Customer/licensee two [Member] | Customer Concentration Risk [Member] | Revenue [Member]      
Concentration Risk [Line Items]      
Percentage of total 17.00% 16.00% 20.00%
Largest Customer [Member] | Credit Concentration Risk [Member] | Accounts Receivable [Member]      
Concentration Risk [Line Items]      
Percentage of total 10.00% 14.00%