Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Sep. 30, 2012
Current assets
Cash and cash equivalents	$ 53,885	$ 60,856
Accounts receivable, net of allowance for doubtful accounts of $3,586 at March 31, 2013 and $4,067 at September 30, 2012	146,380	130,013
Inventories	592,765	557,216
Prepaid expenses and other current assets	12,447	8,683
Income taxes receivable	35,170	45,261
Deferred income taxes	32,264	32,872
Total current assets	872,911	834,901
Property and equipment, net	21,406	20,769
Deferred financing costs, net	10,162	9,255
Goodwill	562,718	565,146
Intangible assets, net	102,402	106,808
Other assets	472	537
Total assets	1,570,071	1,537,416
Current liabilities
Accounts payable	88,479	79,940
Accrued expenses and other current liabilities	17,761	19,788
Income taxes payable	5,880	2,078
Long-term debt-current portion	15,563
Capital lease obligations-current portion	1,076	593
Total current liabilities	128,759	102,399
Long-term debt	585,937	626,000
Capital lease obligations	1,038	205
Deferred income taxes	61,177	55,445
Total liabilities	776,911	784,049
Commitments and contingencies
Stockholders' equity
Preferred stock, $0.001 par value per share: 50,000,000 shares authorized; no shares issued and outstanding
Additional paid-in capital	373,342	367,470
Accumulated other comprehensive loss	(11,171)	(5,730)
Retained earnings	439,348	391,534
Less treasury stock, at cost, 626,225 shares as of March 31, 2013	(8,452)
Total stockholders' equity	793,160	753,367
Total liabilities and stockholders' equity	1,570,071	1,537,416
Class A Common Stock
Stockholders' equity
Common stock	93	93
Class B Convertible Redeemable Common Stock
Stockholders' equity
Common stock