Long-Term Debt - Additional Information (Detail) (USD $)				6 Months Ended			6 Months Ended			6 Months Ended			0 Months Ended
	Aug. 31, 2013	Feb. 28, 2013	May 30, 2012	Aug. 31, 2013 2012 Credit Agreement	Dec. 28, 2012 2012 Credit Agreement	Aug. 31, 2013 2012 Credit Agreement Minimum	Aug. 31, 2013 2012 Credit Agreement Maximum	Aug. 31, 2013 2012 Credit Agreement Term Loan	Dec. 28, 2012 2012 Credit Agreement Term Loan	Aug. 31, 2013 2012 Credit Agreement Revolver	Dec. 28, 2012 2012 Credit Agreement Revolver	Dec. 28, 2012 2012 Credit Agreement Letter of Credit	Aug. 09, 2013 First Amendment to Credit Agreement Maximum
Debt Instrument [Line Items]
Maximum borrowing capacity under credit facility					$ 100,000,000				$ 80,000,000		$ 20,000,000	$ 5,000,000
Credit agreement bear interest rate						2.50%	5.00%
Period after closing to begin maintaining fixed rates							60 days
Minimum period to maintain fix rates				1 year
Minimum fixed interest rates for at least one year				50.00%
Debt instrument maturity date								Dec. 28, 2017		Dec. 28, 2017
Loan repayment commencement date										Apr. 01, 2013
Quarterly payment of term loan percentage								2.50%
Transaction fees related to the issuance of note				500,000
Original issue discount of issuance of debt	2,192,000	2,448,000		2,200,000	2,500,000
First amendment total costs													100,000
Principal amount of nonrecourse notes issued			$ 82,200,000
Interest rate during period			4.10%