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Note 1 - Summary of Significant Accounting Policies (Details) (USD $)
 12 Months Ended
Dec. 29, 2013
Dec. 30, 2012
Jan. 01, 2012
Dec. 29, 2013
Building and Building Improvements [Member]
Minimum [Member]
Dec. 29, 2013
Building and Building Improvements [Member]
Maximum [Member]
Dec. 29, 2013
Furniture And Equipment [Member]
Minimum [Member]
Dec. 29, 2013
Furniture And Equipment [Member]
Maximum [Member]
Dec. 29, 2013
Warranty Reserves [Member]
Dec. 30, 2012
Warranty Reserves [Member]
Jan. 01, 2012
Warranty Reserves [Member]
Jan. 02, 2011
Warranty Reserves [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]                      
Research and Development Expense $ 12,600,000 $ 12,400,000 $ 12,100,000                
Interest Paid 22,900,000 23,100,000 23,700,000                
Income Taxes Paid 8,700,000 10,000,000 19,900,000                
Proceeds from Income Tax Refunds 1,400,000 100,000 4,400,000                
Property, Plant and Equipment, Useful Life       10 years 40 years 3 years 12 years        
Interest Costs Capitalized 800,000 700,000 600,000                
Depreciation 23,900,000 24,200,000 22,300,000                
Finite-Lived Intangible Assets, Accumulated Amortization 77,300,000 77,300,000                  
Goodwill, Impaired, Accumulated Impairment Loss 212,600,000 212,600,000                  
Goodwill 77,941,000 75,672,000                  
Other Intangible Assets, Net 3,800,000 2,500,000                  
Amortization of Intangible Assets 300,000 400,000 700,000                
Fair Value Estimates of Reporting Units, Threshold for No Goodwill Impairment, Percent of Decrease in Fair Value Estimates 0.10                    
Product Warranty Period Lower Range 10 years                    
Product Warranty Period Upper Range 20 years                    
Valuation Allowances and Reserves, Balance               1,364,000 1,232,000 871,000 830,000
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax (5,200,000) 8,500,000 (7,600,000)                
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)     $ 7.37                
Allowance for Doubtful Accounts Receivable $ 7,600,000 $ 8,800,000