Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

v2.4.0.8
Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 29, 2013
Dec. 29, 2012
Financial assets valued on recurring basis    
Assets, fair value $ 969 $ 1,140
Level 1 [Member]
   
Financial assets valued on recurring basis    
Assets, fair value 969 1,140
Level 2 [Member]
   
Financial assets valued on recurring basis    
Assets, fair value      
Level 3 [Member]
   
Financial assets valued on recurring basis    
Assets, fair value      
Valuation Techniques a [Member] | Cash and cash equivalents [Member]
   
Financial assets valued on recurring basis    
Assets, fair value 851 1,030
Valuation Techniques (a) (a)
Valuation Techniques a [Member] | Investments - mutual funds [Member]
   
Financial assets valued on recurring basis    
Assets, fair value 118 110
Valuation Techniques (a) (a)
Valuation Techniques a [Member] | Level 1 [Member] | Cash and cash equivalents [Member]
   
Financial assets valued on recurring basis    
Assets, fair value 851 1,030
Valuation Techniques a [Member] | Level 1 [Member] | Investments - mutual funds [Member]
   
Financial assets valued on recurring basis    
Assets, fair value 118 110
Valuation Techniques a [Member] | Level 2 [Member] | Cash and cash equivalents [Member]
   
Financial assets valued on recurring basis    
Assets, fair value      
Valuation Techniques a [Member] | Level 2 [Member] | Investments - mutual funds [Member]
   
Financial assets valued on recurring basis    
Assets, fair value      
Valuation Techniques a [Member] | Level 3 [Member] | Cash and cash equivalents [Member]
   
Financial assets valued on recurring basis    
Assets, fair value      
Valuation Techniques a [Member] | Level 3 [Member] | Investments - mutual funds [Member]
   
Financial assets valued on recurring basis    
Assets, fair value