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Balance Sheet Components (Property, Plant and Equipment) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 29, 2017
Dec. 30, 2016
Dec. 29, 2017
Dec. 30, 2016
Jun. 30, 2017
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross $ 73,511   $ 73,511   $ 70,129
Less accumulated depreciation and amortization (56,580)   (56,580)   (53,723)
Property, plant and equipment, net 16,931   16,931   16,406
Depreciation and amortization 1,308 $ 1,467 2,590 $ 3,136  
Land          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross 710   710   710
Buildings and leasehold improvements          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross 11,391   11,391   11,442
Software          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross 15,486   15,486   14,803
Machinery and equipment          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, gross $ 45,924   $ 45,924   $ 43,174