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Financial Instruments (Fair Value Measurements) (Details) (USD $)
Dec. 29, 2012
Dec. 31, 2011
Total
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets $ 95,660,394 $ 108,729,835
Total | Money Markets and Cash Equivalents
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 27,135,387 43,095,163
Total | U.S. Government Securities
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 38,582,956 32,145,653
Total | Corporate Debt
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 11,095,227 18,754,992
Total | Certificates of Deposit
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 15,671,779 11,422,742
Total | WIN Semiconductor Corp.
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 1,410,388 1,709,189
Total | Advanced Wireless Semiconductor Company
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 1,764,657 1,602,096
Level 1
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 47,887,310 59,299,118
Level 1 | Money Markets and Cash Equivalents
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 27,135,387 43,095,163
Level 1 | U.S. Government Securities
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 17,576,878 12,892,670
Level 1 | Corporate Debt
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets      
Level 1 | Certificates of Deposit
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets      
Level 1 | WIN Semiconductor Corp.
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 1,410,388 1,709,189
Level 1 | Advanced Wireless Semiconductor Company
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 1,764,657 1,602,096
Level 2
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 47,773,084 49,430,717
Level 2 | Money Markets and Cash Equivalents
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets      
Level 2 | U.S. Government Securities
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 21,006,078 19,252,983
Level 2 | Corporate Debt
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 11,095,227 18,754,992
Level 2 | Certificates of Deposit
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 15,671,779 11,422,742
Level 2 | WIN Semiconductor Corp.
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets      
Level 2 | Advanced Wireless Semiconductor Company
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets      
Level 3
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 0 0
Level 3 | Money Markets and Cash Equivalents
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 0 0
Level 3 | U.S. Government Securities
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 0 0
Level 3 | Corporate Debt
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 0 0
Level 3 | Certificates of Deposit
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 0 0
Level 3 | WIN Semiconductor Corp.
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets 0 0
Level 3 | Advanced Wireless Semiconductor Company
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurements of financial assets $ 0 $ 0