Business Combinations (Details) (USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010
Summary of the aggregate consideration paid and the aggregate amounts of the assets acquired and liabilities assumed
Accounts Receivable	$ 953	$ 0
Inventory	61,247	6,336
Other current assets	0	17
Property and equipment	40,190	0
Goodwill	107,498	3,014
Franchise value	29,491	0
Other assets	628	0
Current liabilities	(6,190)	(87)
Total Consideration	233,817	9,280
Seller financed/assumed debt	(1,711)	0
Cash used in dealership acquisitions	$ 232,106	$ 9,280

Business acquisition purchase price allocation assets acquired liabilities assumed and consideration paid.

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Amount of cash paid to acquire the entity.

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The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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The amount of acquisition cost of a business combination allocated to inventory, including finished goods, work-in-process, and raw materials.

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The amount of acquisition cost of a business combination allocated to prepaid expenses and other current assets. Does not include amounts allocated to cash and cash equivalents, marketable securities, receivables, inventory, and assets not to be used.

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The amount of acquisition cost of a business combination allocated to receivables.

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The amount of acquisition cost of a business combination allocated to current liabilities of the acquired entity.

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will not be amortized. Does not include goodwill.

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The amount of acquisition cost of a business combination allocated to liabilities assumed.

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The amount of acquisition cost of a business combination allocated to noncurrent assets of the acquired entity, except for property plant and equipment, intangible assets, and goodwill.

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The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

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