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Employee Stock Compensation (Details) (USD $) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2012 | Jan. 31, 2012
Number of Shares, Outstanding at January 31, 2012 | 18,200 |
Number of Shares, Granted during the nine months ended October 31, 2012 | 10,000 |
Number of Shares, Forfeited during the nine months ended October 31, 2012 | 4,200 |
Number of Shares, Outstanding at October 31, 2012 | 24,000 | 18,200
Number of Shares, Exercisable at October 31, 2012 | 24,000 |
Number of Shares, Directors' Plan | 21,300 |
Weighted Average Exercise Price per Share, Outstanding at January 31, 2012 | $ 7.31 |
Weighted Average Exercise Price per Share, Granted during the nine months ended October 31, 2012 | $ 6.44 |
Weighted Average Exercise Price per Share, Forfeited during the nine months ended October 31, 2012 | $ 10.67 |
Weighted Average Exercise Price per Share, Outstanding at October 31, 2012 | $ 7.47 | $ 7.31
Weighted Average Exercise Price per Share, Exercisable at October 31, 2012 | $ 7.47 |
Weighted Average Remaining Contractual Term, Outstanding | 4 years 2 months 12 days | 3 years 4 months 17 days
Weighted Average Remaining Contractual Term, Granted during the nine months ended October 31, 2012 | 5 years 7 months 28 days |
Weighted Average Remaining Contractual Term, Forfeited during the nine months ended October 31, 2012 | 0 years |
Weighted Average Remaining Contractual Term, Exercisable at October 31, 2012 | 4 years 2 months 12 days |
Aggregate Intrinsic Value, Outstanding at January 31, 2012 | $ 10,230 |
Aggregate Intrinsic Value, Granted during the nine months ended October 31, 2012 | 100 |
Aggregate Intrinsic Value, Forfeited during the nine months ended October 31, 2012 | 0 |
Aggregate Intrinsic Value, Outstanding at October 31, 2012 | 1,300 | 10,230
Aggregate Intrinsic Value, Exercisable at October 31, 2012 | $ 1,300 |

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- Definition Weighted average remaining contractual term for option awards forfeitures during period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Weighted average remaining contractual term for option awards granted during period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The highest quantity of shares an employee can purchase under the plan per 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 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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. + Details
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- Definition Net number of share options (or share units) granted during the 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)(1) -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(1)(d) -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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