Debt (Details) In Thousands, unless otherwise specified	6 Months Ended			6 Months Ended
	Aug. 30, 2014 USD ($)	Aug. 31, 2013 USD ($)	Mar. 01, 2014 USD ($)	Aug. 30, 2014 Maximum [Member]	Aug. 30, 2014 Revolving Credit Facility [Member] USD ($)	Aug. 30, 2014 Credit Facility [Domain] USD ($)	Aug. 30, 2014 Credit Facility [Domain] CAD	Aug. 30, 2014 Industrial Revenue Bonds [Member] USD ($)	Aug. 30, 2014 Notes Payable, Other Payables [Member] USD ($)
Debt (Textual) [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity	$ 100,000				$ 100,000		4,000
Line of Credit Facility, Expiration Date	Nov. 20, 2018
Line of Credit Facility, Amount Outstanding	0		0
Minimum net worth required	301,800
Net Worth	366,300
Adjusted debt-to-EBITDA ratio	0.27			3.00
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
Debt						800		20,400	300
Interest payments	$ 300	$ 300