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Fair Value - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Jul. 02, 2011
Sep. 29, 2012
Oct. 01, 2011
Apr. 02, 2012
Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]          
Percentage of equity method investment         50.00%
Percentage of voting interests acquired       50.00%  
Cash paid for acquisition of equity interest       $ 3,400,000  
Fair value of equity interest held   2,900,000      
Other comprehensive income reclassification gain   (216,000)      
Gain on equity interest before business combination   1,300,000      
Fair value of equity interest held   1,900,000      
Gain on the sale of an equity method investment 1,500,000        
Loss related to the disposition of the equity interest 200,000        
Gain on cumulative translation reclassification adjustment associated with the equity method investee 1,700,000   (1,715,000)    
Carrying value of investment 4,100,000        
Sale of stock, fair value of consideration received 3,900,000        
Cash, fair value received 1,800,000        
Equipment, fair value received 400,000        
Intangibles, fair value received $ 1,700,000