Separation Accrual (Narrative) (Details) (USD $)	3 Months Ended	6 Months Ended
Jan. 31, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Separation Accrual [Abstract]
Incurred charge for general and administrative expenses, consisting of an accrual of separation payments for the former chief executive officer (CEO)	$ 29,000
Severance costs of CFO	$ 56,000	$ 216,000	$ 56,000	$ 216,000

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits.

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