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