Long-Term Debt - Additional Information (Detail) (USD $)	12 Months Ended				12 Months Ended			12 Months Ended			12 Months Ended			0 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012	May 30, 2012	Feb. 28, 2014 2012 Credit Agreement	Dec. 28, 2012 2012 Credit Agreement	Feb. 28, 2014 2012 Credit Agreement Minimum	Feb. 28, 2014 2012 Credit Agreement Maximum	Feb. 28, 2014 2012 Credit Agreement Term Loan	Dec. 28, 2012 2012 Credit Agreement Term Loan	Feb. 28, 2014 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	$ 20,000,000					$ 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	1,475,000	2,448,000			1,500,000	2,500,000
First amendment total costs														100,000
Loss on debt extinguishment	653,000	4,508,000	2,006,000
Write off of deferred debt issuance cost	100,000
Write off of unamortized debt discount	600,000
Principal amount of nonrecourse notes issued				$ 82,200,000
Interest rate during period				4.10%