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Condensed Consolidated Statements of Comprehensive Income (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 27, 2013
Sep. 28, 2012
Sep. 27, 2013
Sep. 28, 2012
Net income $ 11,094 $ 10,225 $ 29,918 $ 28,753
Other comprehensive income (loss):        
Foreign currency translation adjustments, net of tax 556 306 119 227
Unrealized loss on investments, net of tax (3) (17) (25) (5)
Comprehensive income $ 11,647 $ 10,514 $ 30,012 $ 28,975