Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Summary of Changes in Shareholders' Equity (Details)

v3.5.0.2
Shareholders' Equity - Summary of Changes in Shareholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Feb. 24, 2016
Jul. 02, 2016
Jul. 04, 2015
Jul. 02, 2016
Jul. 04, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning of period       $ 300,225  
Foreign currency translation adjustment   $ (511) $ 432 1,305 $ (3,214)
Retirement liability adjustment – net of tax   130 162 261 323
Net income   14,980 $ 17,690 26,465 $ 28,373
End of period   $ 318,444   $ 318,444  
Common Class Undefined          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
End of period (in shares)   (19,265,000)   (19,265,000)  
Convertible Class B Stock          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
End of period (in shares)   (6,029,000)   (6,029,000)  
Common Stock          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning of period       $ 256  
Conversion of Class B Shares to Common Shares       0  
Exercise of stock options       1  
End of period   $ 257   $ 257  
Common Stock | Common Class Undefined          
Class of Stock [Line Items]          
Shares authorized (in shares)   40,000,000   40,000,000  
Share par value (in usd per share)   $ 0.01   $ 0.01  
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning of period (in shares)       (19,349,000)  
Conversion of Class B Shares to Common Shares (in shares)       239,000  
Exercise of stock options (in shares)       37,000  
End of period (in shares)   (19,625,000)   (19,625,000)  
Common Stock | Convertible Class B Stock          
Class of Stock [Line Items]          
Shares authorized (in shares)   15,000,000   15,000,000  
Share par value (in usd per share)   $ 0.01   $ 0.01  
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning of period (in shares)       (6,220,000)  
Conversion of Class B Shares to Common Shares (in shares)       (239,000)  
Exercise of stock options (in shares)       48,000  
End of period (in shares)   (6,029,000)   (6,029,000)  
Additional Paid-in Capital          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning of period       $ 57,865  
Exercise of stock options       1,085  
Stock compensation expense       1,256  
End of period   $ 60,206   60,206  
Accumulated Other Comprehensive Loss          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning of period       (15,064)  
Foreign currency translation adjustment       1,305  
Retirement liability adjustment – net of tax       261  
End of period   (13,498)   (13,498)  
Retained Earnings          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning of period       257,168  
Net income       26,465  
End of period   283,633   283,633  
Treasury Stock          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Beginning of period       $ 0  
Beginning of period (in shares)       0  
Purchase $ (12,200)     $ (12,154)  
Purchase (in shares) (360,000)     (360,000)  
End of period   $ (12,154)   $ (12,154)  
End of period (in shares)   (360,000)   (360,000)