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Consolidated Statement of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Capital in Excess of Par Value
Retained Earnings
Treasury Stock
Accumulated Other Comprehensive Items
Noncontrolling Interest
Beginning balance (in shares) at Dec. 28, 2013   14,624,159     3,524,742    
Beginning balance at Dec. 28, 2013 $ 270,421 $ 146 $ 96,809 $ 248,170 $ (76,339) $ 710 $ 925
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income 29,048     28,659     389
Dividends declared (6,580)     (6,580)      
Activity under stock plans (in shares)         (169,858)    
Activity under stock plans 4,937   1,189   $ 3,748    
Tax benefits related to employees' and directors' stock plans 771   771        
Purchases of Company common stock (in shares)         405,135    
Purchases of Company common stock (15,136)       $ (15,136)    
Other comprehensive items (18,002)         (17,856) (146)
Ending balance (in shares) at Jan. 03, 2015   14,624,159     3,760,019    
Ending balance at Jan. 03, 2015 265,459 $ 146 98,769 270,249 $ (87,727) (17,146) 1,168
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income 34,683     34,389     294
Dividends declared (7,380)     (7,380)      
Activity under stock plans (in shares)         (139,000)    
Activity under stock plans 4,160   886   $ 3,274    
Tax benefits related to employees' and directors' stock plans 881   881        
Purchases of Company common stock (in shares)         229,760    
Purchases of Company common stock (9,906)       $ (9,906)    
Other comprehensive items (19,952)         (19,826) (126)
Ending balance (in shares) at Jan. 02, 2016   14,624,159     3,850,779    
Ending balance at Jan. 02, 2016 267,945 $ 146 100,536 297,258 $ (94,359) (36,972) 1,336
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income 32,469     32,077     392
Dividends declared (8,285)     (8,285)      
Activity under stock plans (in shares)         (164,247)    
Activity under stock plans 4,893   869   $ 4,024    
Other comprehensive items (12,743)         (12,665) (78)
Ending balance (in shares) at Dec. 31, 2016   14,624,159     3,686,532    
Ending balance at Dec. 31, 2016 $ 284,279 $ 146 $ 101,405 $ 321,050 $ (90,335) $ (49,637) $ 1,650