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Inventories (Narrative) (Details) (USD $) In Thousands	12 Months Ended
	Jul. 31, 2009	Jul. 31, 2011	Jul. 31, 2010
Inventory		$ 213,662	$ 168,178
Subsidiaries valued inventory in first-in, first-out basis		25,530
Effect of liquidation	7,400
Inventory obsolescence reserve		2,039	1,536
Towables [Member]
Effect of liquidation	2,730
Motorized [Member]
Effect of liquidation	4,430
Buses [Member]
Effect of liquidation	$ 240

X

- Definition

The effect of liquidating LIFO (last in first out) inventory layers on income.

+ References

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X

- Definition

The amount of FIFO (first in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

+ References

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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
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- Definition

Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

+ References

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- Definition

The amount of the valuation account as of the balance sheet date which reduces the carrying amount of inventory to net realizable value; takes into consideration such factors as market value, excessive quantities based on expected sales, technological obsolescence, and shrinkage. May also provide for estimated product returns or price concessions pertaining to product cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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