Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)	Jan. 31, 2018	Oct. 31, 2017
Statement of Financial Position [Abstract]
Allowances for doubtful accounts	$ 144,000	$ 144,000
Accumulated depreciation	5,724,548	5,557,899
Customer list and relationships, accumulated amortization	$ 79,875	$ 72,250
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	6,494,680	6,494,680
Common stock, shares outstanding	5,742,894	5,805,935
Treasury Stock, Shares	751,786	688,745

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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