Accumulated Other Comprehensive Items - Reclassification Out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 02, 2016	Apr. 04, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Items [Line Items]
Interest expense	$ (269)	$ (231)
Cost of Revenues	(52,562)	(47,914)
Selling, general, and administrative expenses	(32,496)	(32,222)
Total (expense) income before income taxes	9,879	10,193
Income tax benefit (provision)	(2,888)	(3,268)
Income from Continuing Operations	6,991	6,925
Reclassification out of Accumulated Other Comprehensive Items [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Items [Line Items]
Income from Continuing Operations	(307)	959
Reclassification out of Accumulated Other Comprehensive Items [Member] \| Amortization of Prior Service Cost [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Items [Line Items]
Selling, general, and administrative expenses	(38)	(36)
Reclassification out of Accumulated Other Comprehensive Items [Member] \| Amortization of Actuarial Losses [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Items [Line Items]
Selling, general, and administrative expenses	(260)	(144)
Reclassification out of Accumulated Other Comprehensive Items [Member] \| Pension and Other Post-retirement Plans [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Items [Line Items]
Total (expense) income before income taxes	(298)	(180)
Income tax benefit (provision)	104	63
Income from Continuing Operations	(194)	(117)
Reclassification out of Accumulated Other Comprehensive Items [Member] \| Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Items [Line Items]
Total (expense) income before income taxes	(173)	1,214
Income tax benefit (provision)	60	(138)
Income from Continuing Operations	(113)	1,076
Reclassification out of Accumulated Other Comprehensive Items [Member] \| Cash Flow Hedges [Member] \| Interest Rate Swap [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Items [Line Items]
Interest expense	(89)	(104)
Reclassification out of Accumulated Other Comprehensive Items [Member] \| Cash Flow Hedges [Member] \| Forward Currency-Exchange Contracts [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Items [Line Items]
Revenues	(61)	0
Cost of Revenues	(23)	0
Selling, general, and administrative expenses	$ 0	$ 1,318

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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