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Deferred Compensation (Narrative) (Details) (Former Officers [Member], USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 29, 2012
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |
Minimum period of deferred compensation benefits (years) | 10 years
Minimum deferred compensation benefit age (years) | 65 years
Estimate of Fair Value, Fair Value Disclosure [Member] |
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |
Present value of vested future deferred compensation payments | 335

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- Definition Deferred Compensation Arrangement with Individual, Allocated Share-based Compensation Expense, Minimum Benefit Age + References No definition available. + Details
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- Definition Deferred Compensation Arrangement with Individual, Minimum Contractual Term + References No definition available. + Details
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Namespace Prefix: | synl_
Data Type: | xbrli:durationItemType
Balance Type: | na
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- Details
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. + References No definition available. + Details
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