Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Jan. 31, 2015	Oct. 31, 2014
Current assets:
Accounts receivable, allowance	$ 567,000	$ 688,000
Shareholders' equity:
Common stock, shares outstanding (in shares)	11,299,528us-gaap_CommonStockSharesOutstanding
Class A voting shares [Member]
Shareholders' equity:
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	11,299,528	11,299,528
Common stock, shares outstanding (in shares)	11,299,528	11,299,528
Class B nonvoting stock [Member]
Shareholders' equity:
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	5,000,000	5,000,000
Common stock, shares issued (in shares)	0	0
Common stock, shares outstanding (in shares)	0	0

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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