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Accumulated Other Comprehensive Income (Loss) - Changes by Component (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 29, 2018 | Mar. 31, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017
Changes in accumulated other comprehensive income [Roll Forward] |  |  |  |  |
Beginning balance |  | $ 536,028 |  | $ 536,028 |
Total other comprehensive (loss) income, net | $ (5,395) |  | $ 6,080 | (12,848) | $ 13,417
Reclassification of stranded effects of the Act |  | 556 |  |  |
Ending balance | 583,408 |  |  | 583,408 |
Total [Member] |  |  |  |  |
Changes in accumulated other comprehensive income [Roll Forward] |  |  |  |  |
Beginning balance |  | (51,056) |  | (51,056) | (66,956)
Other comprehensive (loss) income before reclassifications |  |  |  | (12,220) | 14,638
Amounts reclassified from AOCI |  |  |  | (237) | (2,059)
Total other comprehensive (loss) income, net |  |  |  | (12,457) | 12,579
Reclassification of stranded effects of the Act |  |  |  | 556 |
Ending balance | (62,957) |  | (54,377) | (62,957) | (54,377)
Cumulative Translation Adjustment [Member] |  |  |  |  |
Changes in accumulated other comprehensive income [Roll Forward] |  |  |  |  |
Beginning balance |  | (38,163) |  | (38,163) | (49,965)
Other comprehensive (loss) income before reclassifications |  |  |  | (5,143) | 18,209
Amounts reclassified from AOCI |  |  |  | 0 | (3,777)
Total other comprehensive (loss) income, net |  |  |  | (5,143) | 14,432
Reclassification of stranded effects of the Act |  |  |  | 0 |
Ending balance | (43,306) |  | (35,533) | (43,306) | (35,533)
Unrealized (Loss) Gain on Derivatives [Member] |  |  |  |  |
Changes in accumulated other comprehensive income [Roll Forward] |  |  |  |  |
Beginning balance |  | 847 |  | 847 | (300)
Other comprehensive (loss) income before reclassifications |  |  |  | (441) | (1,175)
Amounts reclassified from AOCI |  |  |  | (455) | 1,360
Total other comprehensive (loss) income, net |  |  |  | (896) | 185
Reclassification of stranded effects of the Act |  |  |  | 112 |
Ending balance | 63 |  | (115) | 63 | (115)
Pension/OPEB Liability Adjustment [Member] |  |  |  |  |
Changes in accumulated other comprehensive income [Roll Forward] |  |  |  |  |
Beginning balance |  | (20,610) |  | (20,610) | (23,046)
Other comprehensive (loss) income before reclassifications |  |  |  | 551 | (1,309)
Amounts reclassified from AOCI |  |  |  | 218 | 737
Total other comprehensive (loss) income, net |  |  |  | 769 | (572)
Reclassification of stranded effects of the Act |  |  |  | (1,018) |
Ending balance | (20,859) |  | (23,618) | (20,859) | (23,618)
Unrealized Gain (Loss) on Equity Securities [Member] |  |  |  |  |
Changes in accumulated other comprehensive income [Roll Forward] |  |  |  |  |
Beginning balance |  | 0 |  | 0 | 380
Other comprehensive (loss) income before reclassifications |  |  |  | 0 | (1)
Amounts reclassified from AOCI |  |  |  | 0 | (379)
Total other comprehensive (loss) income, net |  |  |  | 0 | (380)
Reclassification of stranded effects of the Act |  |  |  | 0 |
Ending balance | 0 |  | 0 | 0 | 0
Attributable to Unconsolidated Affiliates [Member] |  |  |  |  |
Changes in accumulated other comprehensive income [Roll Forward] |  |  |  |  |
Beginning balance |  | $ 6,870 |  | 6,870 | 5,975
Other comprehensive (loss) income before reclassifications |  |  |  | (7,187) | (1,086)
Amounts reclassified from AOCI |  |  |  | 0 | 0
Total other comprehensive (loss) income, net |  |  |  | (7,187) | (1,086)
Reclassification of stranded effects of the Act |  |  |  | 1,462 |
Ending balance | $ 1,145 |  | $ 4,889 | $ 1,145 | $ 4,889

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