Concentration Of Risk (Details)	Apr. 30, 2012	Jul. 31, 2011
Product Information [Line Items]
Percentage of sales attributable to one dealer	11.00%
Concentration of risk accounts receivable percentage	15.00%	14.00%
Recreation Vehicle [Member]
Product Information [Line Items]
Percentage of sales attributable to one dealer	12.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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

-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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