Fair Value Measurements - Assets Measured at Fair Value as of Measurement Date (Detail) (Fair Value, Measurements, Recurring [Member], Deferred Compensation Plan Assets [Member], USD $) In Thousands, unless otherwise specified	Aug. 30, 2013	Feb. 28, 2013	Aug. 24, 2012
Assets measured on a recurring and non-recurring basis:
Assets measured on a recurring basis	$ 11,096	$ 10,636	$ 10,016
Level 1 [Member]
Assets measured on a recurring and non-recurring basis:
Assets measured on a recurring basis	8,545	9,175	8,482
Level 2 [Member]
Assets measured on a recurring and non-recurring basis:
Assets measured on a recurring basis	2,551	1,461	1,534
Level 3 [Member]
Assets measured on a recurring and non-recurring basis:
Assets measured on a recurring basis