Other Current Assets (Details) - USD ($) $ in Thousands		Jul. 31, 2015	Oct. 31, 2014
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 4,000
Advance payments to vendors	[1]	3,683	$ 2,372
Notes receivable		719	529
Prepaid expenses and other	[2]	5,531	4,498
Total		10,133	7,528
NRG Energy [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		40,000
Letter of Credit [Member]
Debt Instrument [Line Items]
Debt issuance costs	[3]	$ 200	$ 129

[1] Advance payments to vendors relate to payments for inventory purchases ahead of receipt.

[2] Primarily relates to other prepaid vendor expenses including insurance, rent and lease payments.

[3] Represents the current portion of direct deferred finance costs relating to securing a $40.0 million loan facility with NRG and is being amortized over the five-year life of the facility.