Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Thousands		Jul. 31, 2018	Oct. 31, 2017
Other Assets Noncurrent [Abstract]
Long-term stack residual value	[1]	$ 1,096	$ 987
Deferred finance costs	[2]	0	97
Long-term unbilled receivables	[3]	8,869	12,806
Other	[4]	2,854	2,627
Other assets		$ 12,819	$ 16,517

[1] Relates to estimated residual value for module exchanges performed under the Company’s service agreements where the useful life extends beyond the contractual term of the service agreement and the Company obtains title to the module from the customer upon expiration or termination of the service agreement. If the Company does not obtain rights to title from the customer, the full cost of the module is expensed at the time of the module exchange.

[2] Represents the long-term portion of direct deferred finance costs relating to the Company’s loan facility with NRG which is being amortized over the five-year life of the facility.

[3] Represents unbilled receivables that relate to revenue recognized on customer contracts that will be billed in future periods in excess of twelve months from the balance sheet date.

[4] The Company entered into an agreement with one of its customers on June 29, 2016 that includes a fee for the purchase of the power plants at the end of the term of the agreement. The fee is payable in installments over the term of the agreement and the total paid as of July 31, 2018 and October 31, 2017 was $2.0 million and $1.6 million, respectively. Also included within “Other” are long-term security deposits.