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Derivatives - Narrative (Details)	3 Months Ended		6 Months Ended
	Jul. 02, 2016 USD ($)	Jul. 04, 2015 USD ($)	Jul. 02, 2016 USD ($)	Jul. 04, 2015 USD ($)	Jan. 16, 2015 USD ($)
Forward Currency-Exchange Contracts [Abstract]
Recognized gains (losses)	$ (225,000)	$ 6,000	$ (436,000)	$ 7,000
Interest Rate Swap Agreements [Member]
Interest Rate Swaps [Abstract]
Rate of effectiveness of interest rate swap agreement (in hundredths)			100.00%
Maximum consolidated leverage ratio			3.5
Minimum consolidated interest coverage ratio			3
Unrealized loss on derivatives			$ 232,000
Foreign Exchange Forward [Member]
Forward Currency-Exchange Contracts [Abstract]
Maximum period over which entity manages its level of exposure of risk			12 months
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Swap Agreement 2015 [Member]
Interest Rate Swaps [Abstract]
Derivative, notional amount					$ 10,000,000
Fixed rate of interest (in hundredths)					1.50%

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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- Definition

The maximum consolidated leverage ratio under the negative covenants of the credit facility.

+ References

No definition available.

+ Details

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- Definition

The minimum consolidated interest charge coverage ratio (calculated as income before interest and taxes, divided by interest) to be in compliance with the financial covenant under an existing debt agreement.

+ References

No definition available.

+ Details

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- Definition

The period over which the entity typically manages its level of exposure to the risk of currency-exchange fluctuations by hedging a portion of its currency exposures anticipated over the ensuing period.

+ References

No definition available.

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- Definition

The percentage of effectiveness of derivative instruments.

+ References

No definition available.

+ Details

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

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- References

No definition available.

+ Details

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- Definition

Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959

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- References

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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