Accrued Liabilities (Details) - USD ($)
$ in Thousands
 3 Months Ended
Jan. 31, 2016
Oct. 31, 2015
Accrued Liabilities, Current [Abstract]    
Accrued payroll and employee benefits $ 3,302 $ 3,914
Reserve for product warranty costs [1] 922 964
Accrued material purchase [2] 17,709 7,568
Reserve for service agreement costs 3,784 3,437
Accrued taxes, legal, professional and other 3,270 3,292
Accrued Liabilities, Current 28,987 $ 19,175
Product Warranty Accrual, Warranties Issued 100  
Product Warranty Accrual, Payment and Adjustments $ 100  
[1] Activity in the accrued product warranty costs for the three months ended January 31, 2016 included additions for estimates of future warranty obligations of $0.1 million on contracts in the warranty period and reductions related to actual warranty spend of $0.1 million as contracts progress through the warranty period or are beyond the warranty period.
[2] The Company acts as a procurement agent for POSCO Energy under an Integrated Global Supply Chain Agreement whereby the Company procures materials on POSCO's behalf for their production facility. This liability represents amounts received for the purchase of materials on behalf of POSCO. Amounts due to vendors is recorded as Accounts payable.