Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

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Income Taxes (Details Textual) - USD ($) $ in Thousands	Jan. 31, 2017	Oct. 31, 2016	Jan. 31, 2016	Jan. 31, 2015
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 29		$ 31	$ 36
Unrecognized tax benefits that would favorably impact effective tax rate	19
Liability for interest and penalties related to unrecognized tax benefits	7
Unrecognized tax benefit amount that is reasonably possible to decrease	7
Valuation allowance	515	$ 17,962	$ 21,906
Federal net operating loss carryforward	16,879
State net operating loss carryforward	$ 34,145