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Asset Impairment, Restructuring and Other Charges (Details) (USD $)
 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended
Dec. 25, 2011
Dec. 26, 2010
Dec. 25, 2011
Dec. 26, 2010
Dec. 26, 2010
El Segundo [Member]
Dec. 25, 2011
El Segundo [Member]
Dec. 26, 2010
El Segundo [Member]
Dec. 25, 2011
El Segundo [Member]
Severance and Workforce Reduction Costs (Recoveries) [Member]
Dec. 25, 2011
El Segundo [Member]
Facility Closing [Member]
Jun. 26, 2011
El Segundo [Member]
Severance [Member]
Jun. 27, 2010
El Segundo [Member]
Severance [Member]
Jun. 27, 2010
El Segundo [Member]
Other Workforce Reduction Costs [Member]
Jun. 27, 2010
El Segundo [Member]
Other Charges [Member]
Dec. 25, 2011
Research and Development Facility [Member]
Dec. 26, 2010
Research and Development Facility [Member]
Reported in asset impairment, restructuring and other charges [Abstract]                              
Severance and workforce reduction costs   $ (4,000)   $ 64,000 $ (4,000)   $ 64,000                
Other Charges       66,000                     66,000
Total asset impairment, restructuring and other charges 0 (4,000) 0 130,000 (4,000)   64,000               66,000
Reported in cost of sales [Abstract]                              
Workforce reduction expense related to retention bonuses   100,000   100,000                      
Costs incurred to relocate and install equipment   100,000   200,000                      
Changes in restructuring related accruals [Roll Forward]                              
Balance at beginning of period               461,000              
Cost paid during the quarter               (461,000)              
Total estimated costs of initiative [Abstract]                              
Total estimated cost of initiative, pre-tax           12,100,000   5,900,000 6,200,000         9,000,000  
Total estimated cost of initiative attributable to non-cash charges           400,000                  
Total estimated cost of initiative attributable to cash outlay                           5,400,000  
Total estimated cost of initiative attributable to facilities closure costs relating to equipment           1,000,000                  
Restructuring costs incurred to date                     4,000,000 1,700,000 3,900,000    
Recoveries recorded for previously accrued severance costs                   3,500,000          
Accrued retention bonuses           $ 500,000