Finnveden and Radar Pro Forma Results (Details) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Apr. 30, 2015 USD ($) $ / shares	Apr. 30, 2014 USD ($) $ / shares	Apr. 30, 2015 USD ($) $ / shares	Apr. 30, 2014 USD ($) $ / shares
Business Acquisition [Line Items]
Revenue	$ 280,175	$ 303,448	$ 537,084	$ 578,924
Net income	$ 6,353	$ 11,258	$ 8,796	$ 17,448
Basic earnings per share \| $ / shares	$ 0.37	$ 0.66	$ 0.51	$ 1.02
Diluted earnings per share \| $ / shares	$ 0.37	$ 0.66	$ 0.51	$ 1.02
Foreign Currency Exchange Rate During Period	8.519	6.488	8.097	6.512
Finnveden and Radar [Member]
Business Acquisition [Line Items]
Amortization of Intangible Assets	$ 247		$ 388

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Pro forma basic earnings per share or earnings per unit, which is commonly presented in initial public offerings based on the terms of the offering.

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