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Accumulated Other Comprehensive Income (Loss) - Summary of Accumulated Other Comprehensive (Loss) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 29, 2019
Dec. 30, 2018
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance $ 451,116 $ 455,166 $ 458,907
Gains (Losses) During the Period, Pre-tax Activity (10,076) (26,663) 18,588
Gains (Losses) During the Period, Tax Effect 2,498 (13,161) (4,573)
Reclassification to Income, Pre-tax Activity 4,684 2,769 3,878
Reclassification to Income, Tax Effect (1,157) (682) (956)
Ending Balance 512,990 451,116 455,166
Reclassification of stranded tax effects      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (19,720) 0  
Gains (Losses) During the Period, Pre-tax Activity 0 0  
Gains (Losses) During the Period, Tax Effect 0 (19,720)  
Reclassification to Income, Pre-tax Activity 0 0  
Reclassification to Income, Tax Effect 0 0  
Ending Balance (19,720) (19,720) 0
Total AOCI      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (115,002) (77,265) (94,202)
Ending Balance (119,053) (115,002) (77,265)
Interest rate swap      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (270) 0  
Gains (Losses) During the Period, Pre-tax Activity 0 0  
Gains (Losses) During the Period, Tax Effect 0 0  
Reclassification to Income, Pre-tax Activity (378) (359)  
Reclassification to Income, Tax Effect 92 89  
Ending Balance (556) (270) 0
Foreign currency translation adjustment      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (16) 0 14
Gains (Losses) During the Period, Pre-tax Activity 0 0 0
Gains (Losses) During the Period, Tax Effect 0 0 0
Reclassification to Income, Pre-tax Activity 41 (19) (19)
Reclassification to Income, Tax Effect (11) 3 5
Ending Balance 14 (16) 0
Net Pension Activity | Actuarial loss      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (93,174) (72,690) (78,618)
Gains (Losses) During the Period, Pre-tax Activity (5,521) (30,855) 4,036
Gains (Losses) During the Period, Tax Effect 1,369 7,590 (993)
Reclassification to Income, Pre-tax Activity 4,619 3,688 3,830
Reclassification to Income, Tax Effect (1,140) (907) (945)
Ending Balance (93,847) (93,174) (72,690)
Net Pension Activity | Prior service (costs) credits      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (7) (24) (43)
Gains (Losses) During the Period, Pre-tax Activity 0 0 0
Gains (Losses) During the Period, Tax Effect 0 0 0
Reclassification to Income, Pre-tax Activity 19 22 25
Reclassification to Income, Tax Effect (4) (5) (6)
Ending Balance 8 (7) (24)
Net Postretirement Benefits Activity | Actuarial loss      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (1,191) (4,902) (17,299)
Gains (Losses) During the Period, Pre-tax Activity (4,555) 4,192 14,552
Gains (Losses) During the Period, Tax Effect 1,129 (1,031) (3,580)
Reclassification to Income, Pre-tax Activity 383 730 1,889
Reclassification to Income, Tax Effect (94) (180) (464)
Ending Balance (4,328) (1,191) (4,902)
Net Postretirement Benefits Activity | Prior service (costs) credits      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (624) 351 1,744
Gains (Losses) During the Period, Pre-tax Activity 0 0 0
Gains (Losses) During the Period, Tax Effect 0 0 0
Reclassification to Income, Pre-tax Activity 0 (1,293) (1,847)
Reclassification to Income, Tax Effect 0 318 454
Ending Balance $ (624) $ (624) $ 351