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Accumulated Other Comprehensive Loss - Change in Accumulated Balances for Each Component of Other Comprehensive Income (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance $ (45,896) $ (36,026) $ (5,898)
Ending balance (29,841) (45,896) (36,026)
Foreign currency, net of tax      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 396 1,155 1,636
Other comprehensive income (loss) before reclassification, net of tax 264 (759) (481)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax 0 0 0
Ending balance 660 396 1,155
Amortization of unrecognized pension gain (loss), net of tax      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (35,382) (35,792) (18,141)
Other comprehensive income (loss) before reclassification, net of tax (2,927) 699 (18,416)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax 786 (289) 765
Ending balance (37,523) (35,382) (35,792)
Other, net of tax      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 212 212 212
Other comprehensive income (loss) before reclassification, net of tax 0 0 0
Amounts reclassified from accumulated other comprehensive income (loss), net of tax 0 0 0
Ending balance 212 212 212
AOCI Attributable to Parent      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (34,774) (34,425) (16,293)
Other comprehensive income (loss) before reclassification, net of tax (2,663) (60) (18,897)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax 786 (289) 765
Ending balance $ (36,651) $ (34,774) $ (34,425)