Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended				6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Sep. 30, 2015 USD ($) segment	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2012 USD ($)
Reserve information
Total accounts receivable reserves	$ 103,768						$ 103,768	$ 101,741
Sales Returns and Other Allowances
Number of past years history in business on which reasonable and reliable estimates of product returns is based							40 years
Revision to Financial Statements.
Accelerated depreciation charges	7,207	$ 9,846	$ 3,282
Inventories	844,223						$ 844,223	856,934
Other current assets	59,831						59,831	64,761
Deferred income taxes	701,694						701,694	707,962
Total current assets	1,462,291						1,462,291	1,263,126
Total assets	4,868,409						4,868,409	4,823,409
Total stockholders' equity	1,431,746						1,431,746	1,513,380	$ 1,629,126	$ 1,709,519
(Accumulated deficit) retained earnings	(1,136)						$ (1,136)	(18,431)
Segment Information
Number of business segments | segment							4
Accruals for Litigation and Other Contingencies
Litigation and other contingency reserve	0						$ 0
Shipping and Handling Costs
Shipping and handling costs							$ 93,301	97,382	92,062
Advertising, Promotion and Catalog
Advertising cost amortization period							2 months
Capitalized costs for mail order catalogs	667						$ 667	671
Total mail order catalog expense							8,001	9,093	7,713
Goodwill and Intangible Assets
Impairment adjustments									207,334
Revision to Financial Statements
Revision to Financial Statements.
Accelerated depreciation charges		$ 4,904				$ 6,539
Benefit from adjustment to correct inventory, which is included in income (loss) from operations				$ 3,708
Benefit from adjustment to correct prepaid rent, which is included in income (loss) from operations					$ 3,252
Inventories								3,708
Other current assets								3,252
Deferred income taxes								(2,673)
Total current assets								4,287
Total assets								4,287
Total stockholders' equity								4,287
(Accumulated deficit) retained earnings								(4,287)
Promotional program incentive allowances
Reserve information
Total accounts receivable reserves	84,088						84,088	83,768	82,827	71,845
Allowance for sales returns
Reserve information
Total accounts receivable reserves	17,080						17,080	15,409	13,549	10,360
Allowance for doubtful accounts
Reserve information
Total accounts receivable reserves	$ 2,600						$ 2,600	$ 2,564	$ 2,472	$ 5,244