Fair Value Measurements (Assets And Liabilities Measured At Fair Value On Recurring Basis) (Detail) (USD $)
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Sep. 27, 2013
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Dec. 28, 2012
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Other Current and Non Current Liabilities [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Total contingent consideration liability | $ 6,600,000 | |||||||||||
Level I [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Assets, Fair Value | 15,748,000 | 12,877,000 | ||||||||||
Liabilities, Fair Value | 15,746,000 | 12,875,000 | ||||||||||
Level I [Member] | Money Market Funds [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Assets, Fair Value | 2,000 | [1] | 2,000 | [1] | ||||||||
Level I [Member] | Deferred Compensation Plan Assets [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Assets, Fair Value | 15,746,000 | [2] | 12,875,000 | [2] | ||||||||
Level II [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Assets, Fair Value | 750,000 | 343,000 | ||||||||||
Liabilities, Fair Value | 1,315,000 | 420,000 | ||||||||||
Level II [Member] | Derivative Financial Instruments, Assets [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Foreign Currency Contract, Asset, Fair Value Disclosure | 750,000 | [3] | 343,000 | [3] | ||||||||
Level III [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Liabilities, Fair Value | 899,000 | 2,235,000 | ||||||||||
Total [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Assets, Fair Value | 16,498,000 | 13,220,000 | ||||||||||
Liabilities, Fair Value | 17,960,000 | 15,530,000 | ||||||||||
Total [Member] | Money Market Funds [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Assets, Fair Value | 2,000 | [1] | 2,000 | [1] | ||||||||
Total [Member] | Deferred Compensation Plan Assets [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Assets, Fair Value | 15,746,000 | [2] | 12,875,000 | [2] | ||||||||
Total [Member] | Derivative Financial Instruments, Assets [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Assets, Fair Value | 750,000 | [3] | 343,000 | [3] | ||||||||
Deferred Compensation Plan Liabilities [Member] | Level I [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Liabilities, Fair Value | 15,746,000 | [2] | 12,875,000 | [2] | ||||||||
Deferred Compensation Plan Liabilities [Member] | Total [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Liabilities, Fair Value | 15,746,000 | [2] | 12,875,000 | [2] | ||||||||
Derivative Liabilities [Member] | Level II [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Foreign Currency Derivative Liabilities at Fair Value | 1,315,000 | [3] | 420,000 | [3] | ||||||||
Derivative Liabilities [Member] | Total [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Liabilities, Fair Value | 1,315,000 | [3] | 420,000 | [3] | ||||||||
Contingent Consideration Liabilities [Member] | Level III [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Liabilities, Fair Value | 899,000 | [4] | 2,235,000 | [4] | ||||||||
Contingent Consideration Liabilities [Member] | Total [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||||||
Liabilities, Fair Value | $ 899,000 | [4] | $ 2,235,000 | [4] | ||||||||
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