Accrued Liabilities (Details) - USD ($) $ in Thousands		9 Months Ended
		Jul. 31, 2015	Oct. 31, 2014
Accrued Liabilities, Current [Abstract]
Accrued payroll and employee benefits		$ 4,151	$ 4,432
Accrued contract and operating costs		34	34
Reserve for product warranty costs	[1]	698	1,156
Accrued material purchase	[2]	4,512	0
Reserve for service agreement costs		5,644	3,882
Accrued taxes, legal, professional and other		2,239	2,562
Accrued Liabilities, Current		17,278	$ 12,066
Product Warranty Accrual, Warranties Issued		400
Product Warranty Accrual, Payment and Adjustments		$ 900

[1] Activity in the accrued product warranty costs for the nine months ended July 31, 2015 included additions for estimates of potential future warranty obligations of $0.4 million on contracts in the warranty period and reductions related to actual warranty spend of $0.9 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.