Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Current assets
Cash and cash equivalents	$ 60,959	$ 60,856
Accounts receivable, net of allowance for doubtful accounts of $4,088 at June 30, 2013 and $4,067 at September 30, 2012, respectively	145,631	130,013
Inventories, net	611,029	558,466
Prepaid expenses and other current assets	13,214	8,683
Income taxes receivable	25,875	45,261
Deferred income taxes	32,022	32,872
Total current assets	888,730	836,151
Property and equipment, net	21,036	20,769
Deferred financing costs, net	9,371	9,255
Goodwill	562,103	563,896
Intangible assets, net	100,996	106,808
Other assets	556	537
Total assets	1,582,792	1,537,416
Current liabilities
Accounts payable	87,804	79,940
Accrued expenses and other current liabilities	18,386	19,788
Income taxes payable	2,833	2,078
Capital lease obligations-current portion	1,119	593
Total current liabilities	110,142	102,399
Long-term debt	578,000	626,000
Capital lease obligations	844	205
Deferred income taxes	65,386	55,445
Total liabilities	754,372	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	380,478	367,470
Accumulated other comprehensive loss	(10,073)	(5,730)
Retained earnings	466,374	391,534
Less treasury stock, at cost, 626,225 shares as of June 30, 2013	(8,452)
Total stockholders' equity	828,420	753,367
Total liabilities and stockholders' equity	1,582,792	1,537,416
Class A Common Stock
Stockholders' equity
Common stock	93	93
Class B Convertible Redeemable Common Stock
Stockholders' equity
Common stock