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Note 9 - Income Taxes (Detail) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 29, 2012
Dec. 29, 2012
U.S. Deferred Tax Assets [Member]
Dec. 29, 2012
Foreign Deferred Tax Assets [Member]
Dec. 29, 2012
State Net Operating Loss Carryforwards [Member]
Dec. 29, 2012
Deferred Tax Assets, Tax Credits [Member]
Valuation Allowance, Deferred Tax Asset, Change in Amount $ 15,600,000   $ 3,200,000 $ 1,500,000 $ 4,300,000  
Deferred Tax Assets, Operating Loss Carryforwards, State and Local   4,300,000        
Operating Loss Carryforwards 4,300,000 11,700,000        
Deferred Tax Assets, Tax Credit Carryforwards 2,251,000 4,585,000        
Deferred Tax Assets, Valuation Allowance 16,126,000 20,865,000       4,600,000
Undistributed Earnings of Foreign Subsidiaries 20,500,000 9,000,000        
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 200,000 200,000        
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued $ 40,000 $ 50,000