Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Oct. 31, 2017	Oct. 31, 2016
Prepaid Expenses And Other Current Assets
Legal retainer	$ 15
Prepaid insurance	69	22
Tax receivable		18
Other prepaids	126
Deposits	26
Other assets	1	7
Total prepaid expenses and other current assets	$ 237	$ 47