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Consolidated Statement of Shareholders' Equity (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Apr. 01, 2012
Tax effect of unrealized gain on available-for-sale investments $ 291
Tax effect of foreign currency translation adjustment 206
Accumulated Other Comprehensive Income (Loss)
 
Tax effect of unrealized gain on available-for-sale investments 291
Tax effect of foreign currency translation adjustment $ 206