Debt (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 01, 2014	Mar. 02, 2013	Mar. 03, 2012
Debt (Textual) [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity	$ 100,000
Revolving credit facility expiration date	Nov. 20, 2018
Line of Credit Facility, Amount Outstanding	0	0
Amount of available commitment	76,500	76,600
Minimum net worth required	287,500
Net Worth	352,600
Adjusted debt-to-EBITDA ratio	0.25
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
Repayments of Other Debt	10,000
Write off of Deferred Debt Issuance Cost	200
Debt	20,708	30,813
Current portion long-term debt	49	10,057
Interest payments	700	1,000	1,000
Industrial Revenue Bonds [Member]
Debt (Textual) [Abstract]
Debt	20,400
Other debt obligations
Debt (Textual) [Abstract]
Debt	300
Letter of Credit
Debt (Textual) [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity	50,000
Line of Credit Facility Maximum Capacity Under Previous Facility	$ 60,000
Maximum
Debt (Textual) [Abstract]
Adjusted debt-to-EBITDA ratio	3