Debt (Detail) (USD $) In Thousands, unless otherwise specified	Aug. 24, 2012	Feb. 29, 2012	Aug. 26, 2011
Debt Instrument [Line Items]
Long-term debt	$ 280,181	$ 225,181	$ 233,970
7.375% senior notes, due 2021 [Member]
Debt Instrument [Line Items]
Long-term debt	225,000	225,000
Credit Agreements [Member]
Debt Instrument [Line Items]
Long-term debt	55,000
7.375% senior notes, due 2016 [Member]
Debt Instrument [Line Items]
Long-term debt			213,593
7.375% notes, due 2016 [Member]
Debt Instrument [Line Items]
Long-term debt			20,196
6.10% senior notes, due 2028 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 181	$ 181	$ 181