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Accumulated Other Comprehensive Items - Components of AOCI on the Balance Sheet (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 332,504	$ 284,279	$ 267,945
Ending balance	374,571	332,504	284,279
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(17,501)
Other comprehensive (loss) income before reclassifications	(17,303)
Reclassifications from AOCI	0
Net current period other comprehensive (loss) income	(17,303)
Ending balance	(34,804)	(17,501)
Unrecognized Prior Service (Cost) Income on Retirement Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(319)
Other comprehensive (loss) income before reclassifications	(810)
Reclassifications from AOCI	1,149
Net current period other comprehensive (loss) income	339
Ending balance	20	(319)
Net Actuarial Loss on Retirement Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(8,974)
Other comprehensive (loss) income before reclassifications	4,020
Reclassifications from AOCI	559
Net current period other comprehensive (loss) income	4,579
Ending balance	(4,395)	(8,974)
Deferred Gain (Loss) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	79
Other comprehensive (loss) income before reclassifications	(268)
Reclassifications from AOCI	(8)
Net current period other comprehensive (loss) income	(276)
Ending balance	(197)	79
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(26,715)	(49,637)	(36,972)
Other comprehensive (loss) income before reclassifications	(14,361)
Reclassifications from AOCI	1,700
Net current period other comprehensive (loss) income	(12,661)
Ending balance	$ (39,376)	$ (26,715)	$ (49,637)

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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