Derivative - Additional Information (Detail) (USD $)	12 Months Ended		1 Months Ended				1 Months Ended		12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Sep. 16, 2013 Interest Rate Swap [Member] Agreement	Dec. 28, 2013 Interest Rate Swap [Member]	Dec. 28, 2013 Interest Rate Cap [Member]	Sep. 16, 2013 Interest Rate Cap [Member] Agreement	Sep. 16, 2013 Interest Rate Cap One [Member]	Sep. 16, 2013 Interest Rate Cap Two [Member]	Dec. 28, 2013 Aluminum Forward Contracts [Member] lb Contract	Dec. 29, 2012 Aluminum Forward Contracts [Member] lb Contract
Derivatives, Fair Value [Line Items]
Line of credit to cover the liability position of open contracts									$ 2,000,000
Price of aluminum fall, maximum exposure									2,000,000
Derivative financial instruments, fair value of net liability				630,000					479,000
Number of outstanding forward contracts, Asset									33	24
Purchase of aluminum commodity contracts									9,500,000	3,900,000
Aluminum commodity contracts, average price per pound	0.89	0.94
Aluminum commodity contracts, lower maturity date	1 month	1 month
Aluminum commodity contracts, upper maturity date	18 months	12 months
Derivative financial instruments, fair value of net asset					34,000					20,000
Number of interest rate agreements			1			2
Term of interest rate cap agreement			3 years 6 months 0 days				1 year	2 years
Notional amount of interest rate cap agreement			40,000,000				40,000,000	20,000,000
Derivative instrument LIBOR rate exemption, Interest rate cap agreement							0.50%	0.50%
Portion of the variable rate debt from an increase in the floating rate			2.15%
Termination date of interest rate derivative			May 18, 2018
Accumulated other comprehensive income, net of tax		$ 100,000		$ 700,000