Employee Benefit Plans - Reclassifications from Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014		Jun. 28, 2014
Compensation and Retirement Disclosure [Abstract]
Amortization of actuarial loss and prior service costs-total before tax	$ (105)	[1]	$ (210)	[1]
Tax benefit	48		84
Net of tax	$ (57)		$ (126)

[1] The amortization expense is included in the computation of periodic pension cost and is a decrease to net income upon reclassification from accumulated other comprehensive loss.