Stock-Based Compensation Plans (Schedule Of Non-Vested Options) (Details) (USD $)	6 Months Ended	3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended	15 Months Ended
Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2012 2000 Stock Option Plan [Member]	Jan. 31, 2013 2000 Stock Option Plan [Member]	Jan. 31, 2012 2000 Stock Option Plan [Member]	Oct. 31, 2012 2000 Stock Option Plan [Member]	Jan. 31, 2013 2010 Stock Option Plan [Member]	Jan. 31, 2012 2010 Stock Option Plan [Member]	Jan. 31, 2013 2010 Stock Option Plan [Member]	Oct. 31, 2012 2010 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non- vested, number of options outstanding, Beginning Balance	192,707	32,937	179,467	78,087	181,092	75,587	212,457	96,562
Non- vested, number of options outstanding, granted	145,668	210,667					125,668	146,667
Non- vested, number of options outstanding, vested			(250)		(250)
Non- vested, number of options outstanding, forfeited	(500)	(4,875)	(3,500)	(2,500)	(5,125)		(250)	(4,500)
Non- vested, number of options outstanding, ending balance	337,875	238,729	175,717	75,587	175,717	75,587	337,875	238,729	337,875	212,457
Non- vested, weighted average exercise price, beginning balance	$ 1.12	$ 0.67	$ 0.75	$ 0.69	$ 0.75	$ 0.68	$ 1.11	$ 0.78
Non- vested, weighted average exercise price, granted	$ 1.29	$ 1.00					$ 1.34	$ 1.08
Non- vested, weighted average exercise price, vested			$ 0.86		$ 0.86
Non- vested, weighted average exercise price, forfeited	$ 0.65	$ 0.61	$ 0.80	$ 0.73	$ 0.80		$ 0.65	$ 0.61
Nonvested, weighted average exercise price, ending balance	$ 1.19	$ 0.97	$ 0.75	$ 0.68	$ 0.75	$ 0.68	$ 1.19	$ 0.97	$ 1.19	$ 1.11
Non-vested weighted average remaining vesting period				10 months 13 days	1 year 2 months 27 days				1 year 7 months 10 days	1 year 11 months 1 day

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

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-Publisher FASB

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-Number 123R

-Paragraph A240

-Subparagraph c(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Number 123R

-Paragraph A240

-Subparagraph b(2)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

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-Number 123R

-Paragraph A240

-Subparagraph b(2)(b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(a)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(a)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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- Definition

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

+ Details

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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