Summary Of Significant Accounting Policies (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Aug. 27, 2011	May 28, 2011	Feb. 26, 2011	Nov. 27, 2010	Aug. 28, 2010	May 29, 2010	Feb. 27, 2010	Nov. 28, 2009	Aug. 27, 2011	Aug. 28, 2010	Aug. 29, 2009
Active customer accounts									320,000
Receivables due									within 30 days
Increase in goodwill									$ 5,666
Goodwill and indefinite intangible assets impairment									0	0	0
Intangible assets acquired during period									346	325
Intangible assets, amortization expense									7,689	7,340	7,340
Impairment of long-lived assets									0	0	0
Deferred principal catalog costs									8,786	11,024
Period deferred principal catalog costs remain the most current source of sales									typically one year or less
Advertising costs									14,219	17,193	22,225
Shipping and handling costs									92,442	80,854	72,571
Self insured group health plan maximum liability, per participant									300
Group health plan expense									37,429	34,318	30,897
Stock-based compensation expense									14,768	13,525	10,904
Description of related party transactions									The Company is currently affiliated with one real estate entity (the "Affiliate"). The Affiliate is owned primarily by two of our principal shareholders (Mitchell Jacobson, our Chairman, and his sister, Marjorie Gershwind). The Company leases a customer fulfillment center located near Atlanta, Georgia from its Affiliate.
Unrecognized tax benefit that would affect effective tax rate	8,272				8,500				8,272	8,500
Net sales	533,237	532,366	483,362	472,827	461,361	450,381	395,482	384,817	2,021,792	1,692,041	1,489,518
Leasehold Improvements And Buildings [Member]
Estimated useful life, minimum, in years									5
Estimated useful life, maximum, in years									40
Furniture, Fixtures And Equipment [Member]
Estimated useful life, minimum, in years									3
Estimated useful life, maximum, in years									15
Minimum [Member]
Number of days taken to recoup warranty costs from manufacturers									30
Monthly lease payment range over the term of the lease									188
Maximum [Member]
Warranty period, years									1
Number of days taken to recoup warranty costs from manufacturers									90
Monthly lease payment range over the term of the lease									218
Stock Options [Member]
Stock-based compensation expense									5,900	6,253	5,342
Stock-based compensation expense, tax benefit									2,156	2,318	1,959
Restricted Stock [Member]
Stock-based compensation expense									7,053	7,272	5,562
Restricted Stock Units Agreement [Member]
Stock-based compensation expense									1,815
United Kingdom [Member]
Maximum percentage sales from other geographic regions									3.00%
Net sales									$ 49,335	$ 37,710