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Accumulated Other Comprehensive Loss - Changes in AOCL (Details) - USD ($)
$ in Thousands
4 Months Ended 9 Months Ended
Oct. 07, 2018
Oct. 08, 2017
Oct. 07, 2018
Oct. 08, 2017
Changes in AOCL by each component net of tax        
Balance at the beginning of the period     $ (24,966)  
Other comprehensive (loss) income $ (514) $ 318 (543) $ 888
Balance at the end of the period (25,509)   (25,509)  
Defined Benefit Retirement Plan        
Changes in AOCL by each component net of tax        
Balance at the beginning of the period     (22,776)  
Balance at the end of the period (22,776)   (22,776)  
Cash Flow Hedging Activity        
Changes in AOCL by each component net of tax        
Balance at the beginning of the period     101  
OCI before reclassification     (138)  
Amounts reclassified out of AOCL     15  
Other comprehensive (loss) income     (123)  
Balance at the end of the period (22)   (22)  
Foreign Currency Translation and Employee Benefit Obligation Adjustment        
Changes in AOCL by each component net of tax        
Balance at the beginning of the period     (2,291)  
OCI before reclassification     (420)  
Other comprehensive (loss) income     (420)  
Balance at the end of the period (2,711)   (2,711)  
Accumulated Other Comprehensive Loss        
Changes in AOCL by each component net of tax        
Balance at the beginning of the period     (24,966)  
OCI before reclassification     (558)  
Amounts reclassified out of AOCL     15  
Other comprehensive (loss) income     (543)  
Balance at the end of the period $ (25,509)   $ (25,509)