Financial Instruments and Fair Value Measurements (Details) (Textuals) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
	Jan. 31, 2010	Jul. 31, 2011	Oct. 31, 2010
Financial Instruments and Fair Value Measurements (Textuals) [Abstract]
Approximate reclassification of net loss from accumulated other comprehensive loss		$ 400,000
Number of interest rate derivatives Related to floating to fixed swap agreements recorded as cash flow hedges		2
Total notional amount of interest rate derivatives		125,000,000
Weighted average of Variable interest rate		0.19%	0.26%
Weighted average of fixed interest rate		1.78%	1.78%
Amount of fixed to floating swap agreement	100,000,000
Fixed interest rate on fixed to floating swap agreement	6.75%
Cash benefit from termination of swap agreement before tax included long term debt	3,600,000
Cash benefit from termination of swap agreement after tax included long term debt	2,200,000
Notional amount of outstanding foreign currency forward contracts		157,100,000	252,900,000
Gain (loss) on foreign currency forward contracts related to statement of operations		2,600,000	800,000
Loss on foreign currency forward contracts related to other comprehensive income		200,000	2,300,000
Notional amount of energy hedges		400,000	2,400,000
Other Comprehensive Income Unrealized Gain Loss On Energy Hedges Arising During Period Net Of Tax			300,000
Estimated fair value long-term debt		1,318,100,000	1,021,500,000
Current portion of long-term debt		(12,500,000)	(12,523,000)
Restructuring-related expenses on long lived assets		400,000
Net book value of long lived assets		1,300,000
Recognized Amount of impairment related to net assets held for sale		$ 0