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Stock Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 6 Months Ended |  | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended |  | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended
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Jul. 31, 2013 | Jul. 31, 2012 | Jan. 31, 2013 | Jul. 31, 2013 Restricted Stock Units (RSUs) [Member] | Jul. 31, 2012 Restricted Stock Units (RSUs) [Member] | Jul. 31, 2013 Restricted Stock Units (RSUs) [Member] | Jul. 31, 2012 Restricted Stock Units (RSUs) [Member] | Jul. 31, 2013 2011 Stock Incentive Plan [Member] Restricted Stock Issued On Two Thousand Thirteen Six Twenty Five Vesting Over One Year [Member] [Domain] | Jul. 31, 2012 2011 Stock Incentive Plan [Member] Restricted Stock Issued On Two Thousand Thirteen Six Twenty Five Vesting Over One Year [Member] [Domain] | Jul. 31, 2013 2011 Stock Incentive Plan [Member] Restricted Stock Issued On Two Thousand Thirteen Six Twenty Five Vesting Over One Year [Member] [Domain] | Jul. 31, 2012 2011 Stock Incentive Plan [Member] Restricted Stock Issued On Two Thousand Thirteen Six Twenty Five Vesting Over One Year [Member] [Domain] | Jul. 31, 2013 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member] | Jul. 31, 2012 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member] | Jul. 31, 2013 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member] | Jul. 31, 2012 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member] | Jul. 31, 2013 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 5 years [Member] | Jul. 31, 2012 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 5 years [Member] | Jul. 31, 2013 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 5 years [Member] | Jul. 31, 2012 2011 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 5 years [Member] | Jul. 31, 2013 2007 Stock Incentive Plan [Member] | Jul. 31, 2013 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member] | Jul. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member] | Jul. 31, 2013 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member] | Jul. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/19/2012, vesting over 1 year [Member] | Jul. 31, 2013 2007 Stock Incentive Plan [Member] Restricted Stock, issued 3/21/2012, vesting immediately [Member] | Jul. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 3/21/2012, vesting immediately [Member] | Jul. 31, 2013 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/21/2011, vesting over 1 year [Member] | Jul. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/21/2011, vesting over 1 year [Member] | Jul. 31, 2013 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/21/2011, vesting over 1 year [Member] | Jul. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/21/2011, vesting over 1 year [Member] | Jul. 31, 2013 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/16/2009, vesting over 5 years [Member] | Jul. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/16/2009, vesting over 5 years [Member] | Jul. 31, 2013 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/16/2009, vesting over 5 years [Member] | Jul. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock, issued 6/16/2009, vesting over 5 years [Member] | Jul. 31, 2013 2007 Stock Incentive Plan [Member] Restricted Stock Units, issued 6/19/2007, vesting over 5 years [Member] | Jul. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock Units, issued 6/19/2007, vesting over 5 years [Member] | Jul. 31, 2013 2007 Stock Incentive Plan [Member] Restricted Stock Units, issued 6/19/2007, vesting over 5 years [Member] | Jul. 31, 2012 2007 Stock Incentive Plan [Member] Restricted Stock Units, issued 6/19/2007, vesting over 5 years [Member]
Summary of restricted stock and stock unit awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Units Granted |  |  |  |  |  |  |  |  |  | 83,335 |  |  |  | 31,250 |  |  |  | 520,000 |  |  |  |  | 78,125 |  | 40,000 |  |  |  | 68,960 |  |  |  | 382,500 |  |  |  | 262,500 |
Allocated Share-based Compensation Expense |  |  |  |  |  |  |  | $ 30 | $ 0 | $ 30 | $ 0 | $ 4 | $ 8 | $ 17 | $ 8 | $ 40 | $ 28 | $ 82 | $ 28 |  | $ 11 | $ 21 | $ 41 | $ 21 | $ 0 | $ 80 | $ 0 | $ 17 | $ 0 | $ 67 | $ 49 | $ 56 | $ 105 | $ 113 | $ 0 | $ 24 | $ 0 | $ 98
Preferred Stock, Shares Outstanding | 0 | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unamortized Compensation | 901 |  |  |  |  |  |  | 145 |  | 145 |  | 0 |  | 0 |  | 601 |  | 601 |  |  | 0 |  | 0 |  |  |  |  |  |  |  | 155 |  | 155 |  |  |  |  |
Totals for the period | $ 275 | $ 415 |  | $ 134 | $ 154 | $ 275 | $ 415 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph 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 Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(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. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Aggregate unrecognized cost of option awards made to employees under a stock option plan or plans, that have yet to vest. + References No definition available. + Details
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- Definition Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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- Definition 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 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) -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)(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. + Details
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- Definition The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(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. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(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. + Details
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