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Note 13. Commitments and Contingencies (Detail) (USD $)
1 Months Ended
Jul. 01, 2012
Mar. 31, 2013
Dec. 30, 2012
Cost-method Investments, Aggregate Carrying Amount   $ 20,997,000 $ 20,161,000
Loss Contingency, Damages Sought, Value 25,000    
Total Cost [Member]
     
Cost-method Investments, Aggregate Carrying Amount   $ 21,000,000