Other Assets, net (Details) (USD $)	Jul. 31, 2014		Oct. 31, 2013
Line of Credit Facility, Maximum Borrowing Capacity	$ 4,000,000
Long-term stack residual value	2,725,000	[1]	2,898,000	[1]
Debt issuance costs	0	[2]	1,721,000	[2]
Other	638,000	[3]	846,000	[3]
Other assets, net	3,877,000		5,465,000
NRG Energy, Inc. [Member]
Line of Credit Facility, Maximum Borrowing Capacity	40,000,000
Letter of Credit [Member]
Debt issuance costs	$ 514,000	[4]	$ 0	[4]

[1] where the useful life extends beyond the contractual term of the SA and the Company obtains title for the module from the customer upon expiration or non-renewal of the SA. If the Company does not obtain rights to title from the customer, the cost of the module is expensed at the time of the module exchange.

[2] Represents the long-term portion of capitalized debt issuance costs relating to the convertible debt issuance. As of July 31, 2014, the convertible notes have been converted and the debt issuance costs have been adjusted to additional paid in capital.

[3] Includes security deposits and notes receivable.

[4] Represents the long-term portion of direct deferred finance costs relating to securing a $40.0 million loan facility and will be amortized over the five-year life of the facility.