Quarterly report pursuant to Section 13 or 15(d)

Supplemental Retirement Plan and Related Post Retirement Benefits - Additional Information (Detail)

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Supplemental Retirement Plan and Related Post Retirement Benefits - Additional Information (Detail)
9 Months Ended
Sep. 27, 2014
RetirementPlans
Compensation and Retirement Disclosure [Abstract]  
Number of non-qualified supplemental retirement defined benefit plans 2