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Note 10 - Shareholders' Equity (Details) - Activity of Shareholders' Equity One (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 29, 2013
Dec. 30, 2012
Jan. 01, 2012
Note 10 - Shareholders' Equity (Details) - Activity of Shareholders' Equity One [Line Items]      
Balance, at January 2, 2011 $ 295,702    
Net income 48,255 5,943 38,721
Pension liability adjustment (1,409) (771) 5,066
Foreign currency translation adjustment (5,241) 8,539 (7,614)
Balance, at January 1, 2012 340,787 295,702  
Common Stock [Member] | Common Class A [Member]
      
Note 10 - Shareholders' Equity (Details) - Activity of Shareholders' Equity One [Line Items]      
Balance, at January 2, 2011     5,729
Balance, at January 2, 2011 (in Shares)     57,311
Conversion of common stock     59
Conversion of common stock (in Shares)     593
Stock issuances under employee plans     50
Stock issuances under employee plans (in Shares)     502
Balance, at January 1, 2012     5,839
Balance, at January 1, 2012 (in Shares)     58,406
Common Stock [Member] | Common Class B [Member]
      
Note 10 - Shareholders' Equity (Details) - Activity of Shareholders' Equity One [Line Items]      
Balance, at January 2, 2011     716
Balance, at January 2, 2011 (in Shares)     7,145
Conversion of common stock     (59)
Conversion of common stock (in Shares)     (593)
Other issuances of common stock     53
Other issuances of common stock (in Shares)     527
Balance, at January 1, 2012     709
Balance, at January 1, 2012 (in Shares)     7,078
Common Stock [Member]
      
Note 10 - Shareholders' Equity (Details) - Activity of Shareholders' Equity One [Line Items]      
Balance, at January 2, 2011 6,606 6,548  
Balance, at January 2, 2011 (in Shares) 66,062 65,484  
Stock issuances under employee plans 20 16  
Stock issuances under employee plans (in Shares) 201 160  
Other issuances of common stock 67 58  
Other issuances of common stock (in Shares) 670 573  
Forfeitures and compensation expense related to stock awards (62) (16)  
Balance, at January 1, 2012 6,631 6,606  
Balance, at January 1, 2012 (in Shares) 66,311 66,062  
Additional Paid-in Capital [Member]
      
Note 10 - Shareholders' Equity (Details) - Activity of Shareholders' Equity One [Line Items]      
Balance, at January 2, 2011 366,677 361,400 349,662
Stock issuances under employee plans 1,814 2,030 210
Other issuances of common stock 10,805 7,564 11,336
Unamortized stock compensation expense related to restricted stock awards (10,872) (7,610) (11,402)
Forfeitures and compensation expense related to stock awards 6,173 3,293 11,594
Balance, at January 1, 2012 374,597 366,677 361,400
Retained Earnings [Member]
      
Note 10 - Shareholders' Equity (Details) - Activity of Shareholders' Equity One [Line Items]      
Balance, at January 2, 2011 (16,746) (16,764) (49,770)
Net income 48,255 5,943 38,721
Cash dividends paid (7,283) (5,925) (5,231)
Other     (484)
Balance, at January 1, 2012 24,226 (16,746) (16,764)
Accumulated Defined Benefit Plans Adjustment [Member]
      
Note 10 - Shareholders' Equity (Details) - Activity of Shareholders' Equity One [Line Items]      
Balance, at January 2, 2011 (35,491) (36,262) (31,196)
Pension liability adjustment 1,409 771 (5,066)
Balance, at January 1, 2012 (34,082) (35,491) (36,262)
Accumulated Translation Adjustment [Member]
      
Note 10 - Shareholders' Equity (Details) - Activity of Shareholders' Equity One [Line Items]      
Balance, at January 2, 2011 (25,344) (33,883) (26,269)
Foreign currency translation adjustment (5,241) 8,539 (7,614)
Balance, at January 1, 2012 $ (30,585) $ (25,344) $ (33,883)