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Accumulated Other Comprehensive Income (Loss) - Summary of Accumulated Other Comprehensive (Loss) (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 01, 2017 | Jan. 03, 2016 | Dec. 28, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning Balance | $ 322,432 | $ 256,943 | $ 259,926
Gains (Losses) During the Period, Pre-tax Activity | (18,929) | 9,112 | (54,239)
Gains (Losses) During the Period, Tax Effect | 7,287 | (3,490) | 20,935
Reclassification to income, Pre-tax Activity | 1,874 | 3,061 | 2,550
Reclassification to income, Tax Effect | (722) | (1,176) | (984)
Ending Balance | 363,024 | 322,432 | 256,943
Foreign Currency Translation Adjustment [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning Balance | (5) | (1) | 4
Reclassification to income, Pre-tax Activity | (11) | (8) | (9)
Reclassification to income, Tax Effect | 5 | 4 | 4
Ending Balance | (11) | (5) | (1)
Accumulated Other Comprehensive Loss [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning Balance | (82,407) | (89,914) | (58,176)
Ending Balance | (92,897) | (82,407) | (89,914)
Net Pension Activity [Member] | Actuarial Loss [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning Balance | (68,243) | (74,867) | (43,028)
Gains (Losses) During the Period, Pre-tax Activity | (9,777) | 7,513 | (53,597)
Gains (Losses) During the Period, Tax Effect | 3,764 | (2,877) | 20,688
Reclassification to income, Pre-tax Activity | 3,031 | 3,230 | 1,743
Reclassification to income, Tax Effect | (1,168) | (1,242) | (673)
Ending Balance | (72,393) | (68,243) | (74,867)
Net Pension Activity [Member] | Prior Service Costs [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning Balance | (78) | (99) | (121)
Reclassification to income, Pre-tax Activity | 28 | 35 | 36
Reclassification to income, Tax Effect | (11) | (14) | (14)
Ending Balance | (61) | (78) | (99)
Net Postretirement Benefits Activity [Member] | Actuarial Loss [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning Balance | (19,825) | (22,759) | (18,441)
Gains (Losses) During the Period, Pre-tax Activity | (9,152) | 1,599 | (9,324)
Gains (Losses) During the Period, Tax Effect | 3,523 | (613) | 3,598
Reclassification to income, Pre-tax Activity | 2,186 | 3,164 | 2,293
Reclassification to income, Tax Effect | (843) | (1,216) | (885)
Ending Balance | (24,111) | (19,825) | (22,759)
Net Postretirement Benefits Activity [Member] | Prior Service Costs [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Beginning Balance | 5,744 | 7,812 | 3,410
Gains (Losses) During the Period, Pre-tax Activity |  |  | 8,682
Gains (Losses) During the Period, Tax Effect |  |  | (3,351)
Reclassification to income, Pre-tax Activity | (3,360) | (3,360) | (1,513)
Reclassification to income, Tax Effect | 1,295 | 1,292 | 584
Ending Balance | $ 3,679 | $ 5,744 | $ 7,812

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