Employee Benefit Plans - Schedule of Post-Retirement Benefit Obligation to Funded Status and Liability (Detail) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012
Defined Benefit Plan Disclosure [Line Items]
Plan assets at end of year	$ 0
Defined Benefit Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation at beginning of year	2,366,000	2,909,000
Service cost	15,000	16,000
Interest cost	86,000	120,000
Actuarial gain	(386,000)	(617,000)
Benefits paid	(60,000)	(62,000)
Accumulated benefit obligation at end of year	2,021,000	2,366,000
Plan assets at end of year
Funded status	$ (2,021,000)	$ (2,366,000)