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Other Assets and Amounts Due to / Due From Affiliates (Marketable Equity Securities) (Details) (USD $)
 3 Months Ended 12 Months Ended
Jun. 25, 2011
Dec. 29, 2012
Dec. 31, 2011
Dec. 25, 2010
Schedule of Available-for-sale Securities [Line Items]        
Fair market value   $ 65,349,962 $ 62,323,387  
Gain on sales of investments   856,170 368,641 2,597,505
WIN
        
Schedule of Available-for-sale Securities [Line Items]        
Fair market value   1,400,000 1,700,000  
Adjusted cost basis   0    
Number of shares of investee sold   500,000    
Gain on sales of investments   900,000    
Micrel, Inc.
        
Schedule of Available-for-sale Securities [Line Items]        
Gain on sales of investments       700,000
Proceeds from sale of investments       2,200,000
Kenet
        
Schedule of Available-for-sale Securities [Line Items]        
Gain on sales of investments       300,000
Investee | AWSC
        
Schedule of Available-for-sale Securities [Line Items]        
Fair market value   1,800,000 1,600,000  
Adjusted cost basis   700,000 700,000  
Number of shares of investee sold 300,000      
Gain on sales of investments 400,000     1,600,000
Revenues   8,192,000 11,800,000 14,466,000
Due from related parties   500,000 1,100,000  
Proceeds from sale of investments       1,700,000
Management | AWSC
        
Schedule of Available-for-sale Securities [Line Items]        
Number of directors in common with affiliate   1    
Management | AWSC | Minimum
        
Schedule of Available-for-sale Securities [Line Items]        
Directors and officers, percent of investment in an affiliate   0.10%    
Management | AWSC | Maximum
        
Schedule of Available-for-sale Securities [Line Items]        
Directors and officers, percent of investment in an affiliate   0.50%    
Other
        
Schedule of Available-for-sale Securities [Line Items]        
Due from related parties   $ 100,000