Derivative Instruments and Hedging Activities - Additional Information (Detail) (Interest rate contract [Member], USD $)	1 Months Ended
	Jan. 31, 2011	Mar. 30, 2012
Interest rate contract [Member]
Derivative [Line Items]
Initial notional amount on interest rate contract	$ 15,000,000
Maturity date	Mar. 01, 2016
Variable interest rate terms	LIBOR
Fixed interest rate (percent)	3.94%
Variable interest rate (percent)	1.85%
Required notional amount for interest rate contract (percent)	50.00%
Expiration term of loan	5 years
Pre-tax earnings within the next twelve months		$ 140,000