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Stock Plans (Details)
1 Months Ended 3 Months Ended
Apr. 30, 2015
shares
Jul. 04, 2015
USD ($)
$ / shares
shares
Jan. 03, 2015
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized 1,500,000    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized   9,050,076 7,550,076
Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Modification Plan, Weighted Average Exercise Price Prior to Modification | $ / shares   $ 9.23  
Share-based Compensation Arrangement by Share-based Payment Award, Modification Plan, Average Remaining Contractual Life   8.8  
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Number of Employees Affected   17  
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Number of Shares Affected   4.5  
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost | $   $ 0.3