Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Thousands		Apr. 30, 2020	Oct. 31, 2019
Other Assets Noncurrent [Abstract]
Long-term stack residual value	[1]	$ 987	$ 987
Long-term unbilled receivables	[2]	4,438	3,588
Other	[3]	5,425	4,914
Other assets		$ 10,850	$ 9,489

[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 for the module from the customer upon expiration or non-renewal 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 unbilled receivables that relate to revenue recognized on customer contracts that will be billed in future periods in excess of 12 months from the balance sheet date.

[3] 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 April 30, 2020 and October 31, 2019 was $2.4 million and $2.3 million, respectively. Also included within “Other” are long-term security deposits and prepaid withholding taxes on deferred revenue as of April 30, 2020.