Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010 Predecessor	Sep. 30, 2012 Allowance for sales returns	Sep. 30, 2011 Allowance for sales returns	Sep. 30, 2010 Allowance for sales returns	Sep. 30, 2010 Allowance for sales returns Predecessor	Sep. 30, 2009 Allowance for sales returns Predecessor	Sep. 30, 2012 Promotional programs incentive allowance	Sep. 30, 2011 Promotional programs incentive allowance	Sep. 30, 2010 Promotional programs incentive allowance	Sep. 30, 2010 Promotional programs incentive allowance Predecessor	Sep. 30, 2009 Promotional programs incentive allowance Predecessor	Sep. 30, 2012 Allowance for doubtful accounts	Sep. 30, 2011 Allowance for doubtful accounts	Sep. 30, 2010 Allowance for doubtful accounts Predecessor	Sep. 30, 2009 Allowance for doubtful accounts Predecessor
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
Reserve information
Total accounts receivable reserves	$ 87,449	$ 90,762		$ 10,360	$ 10,793	$ 9,457	$ 9,457	$ 11,707	$ 71,845	$ 74,593	$ 56,968	$ 56,968	$ 49,071	$ 5,244	$ 5,376	$ 5,575	$ 3,723
Shipping and Handling Costs
Shipping and handling costs	85,784	80,072	69,484
Amounts billed to customers	13,831	16,660	16,312
Advertising, Promotion and Catalog
Advertising cost amortization period	2 months
Capitalized costs for mail order catalogs	477	575
Total mail order catalog expense	$ 9,416	$ 10,395	$ 9,070