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Contingencies
9 Months Ended
Jul. 31, 2011
Contingencies [Abstract]  
Contingencies
  20.   Contingencies. We are involved in pending or potential litigation regarding environmental, product liability, patent, contract, employee and other matters arising from the normal course of business, including the environmental matter discussed below. After consultation with legal counsel, we do not expect that resolutions of these matters will result in a material effect on our financial condition, quarterly or annual results of operations or cash flows.
 
      We have voluntarily agreed with the City of New Richmond, Wisconsin and other Potentially Responsible Parties to share costs associated with the remediation of the City of New Richmond municipal landfill (the “Site”) and constructing a potable water delivery system serving the impacted area down gradient of the Site. At July 31, 2011 and October 31, 2010, our accruals for the ongoing operation, maintenance and monitoring obligation at the Site were $795 and $885, respectively.
 
      The liability for environmental remediation represents management’s best estimate of the probable and reasonably estimable undiscounted costs related to known remediation obligations. The accuracy of our estimate of environmental liability is affected by several uncertainties such as additional requirements that may be identified in connection with remedial activities, the complexity and evolution of environmental laws and regulations, and the identification of presently unknown remediation requirements. Consequently, our liability could be greater than our current estimate. However, we do not expect that the costs associated with remediation will have a material adverse effect on our financial condition, quarterly or annual results of operations or cash flows.