Employee Benefit Plans (Narrative) (Details) (USD $)	12 Months Ended
Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Defined Benefit Plan Disclosure [Line Items]
Expenses related to defined contribution retirement plan	$ 700,000	$ 800,000	$ 700,000
Maximum percentage of equity portfolio investable in one issuer for equity investments	10.00%
Maximum percentage of equity portfolio investable in one industry for equity investments	20.00%
Maximum percentage of total portfolio investable in one issuer	5.00%
Maximum percentage of outstanding shares of issuer allowed	5.00%
Employer contribution to defined benefit pension plans	5,980,000	3,797,000
Defined benefit pension plans, additional voluntary contribution	2,500,000
Expected contribution in 2013	$ 2,100,000
Domestic Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.73%	4.21%	5.36%
Long-term rate of return on assets assumption	7.80%	7.80%	7.80%

Defined benefit pension plan additional voluntary contribution

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- Definition

Maximum percentage of equity portfolio investable in one industry for equity investments

+ References

No definition available.

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- Definition

Maximum percentage of equity portfolio investable in one issuer for equity investments

+ References

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- Definition

Maximum percentage of outstanding shares of issuer Plan is allowed to hold.

+ References

No definition available.

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Maximum percentage of total portfolio investable in one issuer

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- Definition

The interest rate used to adjust for the time value of money for the plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

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-Name Accounting Standards Codification

-Topic 715

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

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-SubTopic 20

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-SubTopic 30

-Glossary Expected Long-Term Rate of Return on Plan Assets

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- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

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-Number 132R

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- Definition

The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

+ References

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

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