Long-Term Debt (Schedule Of Debt Outstanding) (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 02, 2016	Jan. 03, 2015
Debt Instrument [Line Items]
Total debt	$ 388,396	$ 446,937
Less current portion of long-term debt	(8,541)	(8,561)
Total long-term debt	379,855	438,376
Unsecured U.S. Dollar-denominated revolving credit facility due May 2019 [Member]
Debt Instrument [Line Items]
Unsecured Debt	$ 0	50,000
Debt Instrument, Maturity Date	May 30, 2019
Debt Instrument, Description of Variable Rate Basis	30-day Eurodollar rate
Debt Instrument, Basis Spread on Variable Rate	1.10%
Debt Instrument, Interest Rate During Period	1.524%
Unsecured U.S. term loan due May 2019 [Member]
Debt Instrument [Line Items]
Unsecured Debt	$ 136,875	144,375
Debt Instrument, Maturity Date	May 30, 2019
Debt Instrument, Description of Variable Rate Basis	30-day Eurodollar rate
Debt Instrument, Basis Spread on Variable Rate	1.25%
Debt Instrument, Interest Rate During Period	1.674%
Unsecured U.S. term loan due May 2024 [Member]
Debt Instrument [Line Items]
Unsecured Debt	$ 150,000	150,000
Debt Instrument, Maturity Date	May 30, 2024
Debt Instrument, Description of Variable Rate Basis	30-day Eurodollar rate
Debt Instrument, Basis Spread on Variable Rate	1.625%
Debt Instrument, Interest Rate During Period	2.049%
Private Placement Senior Notes due June 2017 [Member]
Debt Instrument [Line Items]
Senior notes	$ 101,521	102,562
Debt Instrument, Maturity Date	Jun. 01, 2017
Debt Instrument, Interest Rate During Period	5.72%
Debt Instrument Fair Value Adjustment	$ 1,500	$ 2,600
Credit Agreement [Member] \| Unsecured U.S. Dollar-denominated revolving credit facility due May 2019 [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.15%

Debt instrument fair value adjustment

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-Subparagraph (SX 210.5-02.22(a)(2))
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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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- Definition

Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

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