Property, Plant And Equipment (Property, Plant And Equipment) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 27, 2011 years	Aug. 28, 2010
Property, plant and equipment, gross	$ 350,015	$ 327,614
Less: accumulated depreciation and amortization	201,202	184,005
Total	148,813	143,609
Land [Member]
Property, plant and equipment, gross	11,555	11,527
Building And Improvements [Member]
Property, plant and equipment, gross	80,019	79,228
Property, plant and equipment, estimated useful life maximum, in years	40
Leasehold Improvements [Member]
Property, plant and equipment, gross	5,420	5,056
Property, plant and equipment, estimated useful life, in years	The lesser of lease term or 31.5
Furniture, Fixtures And Equipment [Member]
Property, plant and equipment, gross	134,318	120,794
Property, plant and equipment, estimated useful life minimum, in years	3
Property, plant and equipment, estimated useful life maximum, in years	15
Automobiles [Member]
Property, plant and equipment, gross	548	359
Property, plant and equipment, estimated useful life maximum, in years	5
Computer Systems, Equipment And Software [Member]
Property, plant and equipment, gross	$ 118,155	$ 110,650
Property, plant and equipment, estimated useful life minimum, in years	3
Property, plant and equipment, estimated useful life maximum, in years	5