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Stock Based Compensation (Details 1) (USD $)	6 Months Ended
	Jul. 31, 2012
Summary of change in number of non-vested options to purchase shares of common stock
Nonvested, January 31, 2012, Shares	212,000
Nonvested, January 31, 2012, Weighted Average Fair Value	$ 5.09
Granted, Shares	173,000
Granted, Weighted Average Fair Value	$ 5.29
Forfeited Shares	(5,000)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period	30,000
Forfeited, Weighted Average Fair Value	$ 6.32
Vested, Shares	(87,000)
Vested, Weighted Average Fair Value	$ 3.99
Nonvested, July 31, 2012, Shares	293,000
Nonvested, July 31, 2012, Weighted Average Fair Value	$ 5.51

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Share based compensation arrangement by share based payment award equity instruments options vested in period.

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Share based compensation arrangement by share based payment award option nonvested outstanding number of shares.

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Share based compensation arrangement by share based payment award options forfeitures, weighted average grant date fair value.

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Share based compensation arrangement by share based payment award stock option non-vested weighted average fair value.

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- Definition

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

+ 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)(1)(iv)(3)

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



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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(e)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option 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)(1)(iv)(3)

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



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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(f)

-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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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-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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-Name Accounting Standards Codification

-Topic 718

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-Section 50

-Paragraph 2

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

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