Long-Term Debt - Additional Information (Detail) (USD $)				3 Months Ended				1 Months Ended
	May 31, 2013	Feb. 28, 2013	May 30, 2012	May 31, 2013 2012 Credit Agreement	Dec. 28, 2012 2012 Credit Agreement	May 31, 2013 2012 Credit Agreement Minimum	May 31, 2013 2012 Credit Agreement Maximum	Dec. 28, 2012 2012 Credit Agreement Term Loan	Dec. 28, 2012 2012 Credit Agreement Revolver	Dec. 28, 2012 2012 Credit Agreement Letter of Credit
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%
Minimum fixed interest rates for at least one year				50.00%
Quarterly payment of term loan percentage								2.50%
Debt instrument maturity date								Dec. 28, 2017	Dec. 28, 2017
Loan repayment commencement date								Apr. 01, 2013
Transaction fees related to the issuance of note				500,000
Original issue discount of issuance of debt	2,320,000	2,448,000			2,500,000
Additional interest expense				2,300,000
Principal amount of nonrecourse notes issued			$ 82,200,000
Interest rate during period			4.10%