Debt (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Aug. 31, 2013	Sep. 01, 2012	Mar. 02, 2013
Debt (Textual) [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity	$ 100,000
Line of Credit Facility, Expiration Date	Oct. 19, 2017
Line of Credit Facility, Amount Outstanding	0		0
Minimum net worth required	274,200
Net Worth	339,000
Adjusted debt-to-EBITDA ratio	0.00
Repayments of Other Debt	10,000
Write off of Deferred Debt Issuance Cost	200
Decrease in non-credit facility debt	25,000
Excess of non credit facility debt on unrestricted cash balances, cash equivalents and short-term marketable securities available for sale	15,000
Interest payments	300	300
Maximum [Member]
Debt (Textual) [Abstract]
Adjusted debt-to-EBITDA ratio	3.00
Industrial Revenue Bonds [Member]
Debt (Textual) [Abstract]
Debt	20,400
Notes Payable, Other Payables [Member]
Debt (Textual) [Abstract]
Debt	$ 400