Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments (Details Textual)

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Fair Value of Financial Instruments (Details Textual) (USD $)
6 Months Ended 9 Months Ended
Jun. 30, 2012
Sep. 28, 2013
Fair Value of Financial Instruments (Textual) [Abstract]    
Securities held with stated maturities   12 months
Securities classifies as current assets under caption marketable securities maturities   12 months
Realized loss on available for sale securities $ 27,000 $ 7,000
Impairment Charge on available for sale securities   61,000
Nonrecurring [Member]
   
Fair Value of Financial Instruments (Textual) [Abstract]    
Fair value adjustments for assets measured at fair value   0
Fair value adjustments for liabilities measured at fair value   0
Phantom stock units [Member]
   
Fair Value of Financial Instruments (Textual) [Abstract]    
Phantom stock units, Vesting Period   3 years
Deferred director stock units and phantom stock units liability [Member]
   
Fair Value of Financial Instruments (Textual) [Abstract]    
Recognized expense related to deferred director stock units and phantom stock units liability $ 74,000 $ 50,000