Fair Value - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 28, 2014	Mar. 29, 2013	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of level III, assets	$ 0		$ 0
Fair value of level III, liabilities	0		0
Transfers between levels I, II and III	0		0
Future [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amounts of futures contracts outstanding	6,000,000		9,000,000
Average notional amounts of futures contracts outstanding	6,000,000		7,000,000
Mark-to-market adjustment gain (loss)	29,000		31,000
Loss related to derivative instrument	$ 323,000	$ 220,000