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Stock-Based Compensation and Stockholders' Rights (Restricted Stock Units) (Details) (USD $) | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended
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Oct. 31, 2014 Restricted Stock or Stock Units [Member] | Oct. 31, 2013 Restricted Stock or Stock Units [Member] | Oct. 31, 2014 Restricted Stock or Stock Units [Member] | Oct. 31, 2013 Restricted Stock or Stock Units [Member] | Oct. 31, 2014 2011 Plan [Member] 28626 units of restricted stock issued on 6/24/2014 vesting over 1 year [Member] | Oct. 31, 2014 2011 Plan [Member] 28626 units of restricted stock issued on 6/24/2014 vesting over 1 year [Member] | Oct. 31, 2014 2011 Plan [Member] 490,000 units of restricted stock issued on 6/24/2014 vesting over 5 Year [Member] | Oct. 31, 2014 2011 Plan [Member] 490,000 units of restricted stock issued on 6/24/2014 vesting over 5 Year [Member] | Oct. 31, 2014 2011 Plan [Member] 10000 units of restricted stock issued on 12/3/2013 vesting over 1 year [Member] | Oct. 31, 2013 2011 Plan [Member] 10000 units of restricted stock issued on 12/3/2013 vesting over 1 year [Member] | Oct. 31, 2014 2011 Plan [Member] 10000 units of restricted stock issued on 12/3/2013 vesting over 1 year [Member] | Oct. 31, 2013 2011 Plan [Member] 10000 units of restricted stock issued on 12/3/2013 vesting over 1 year [Member] | Oct. 31, 2014 2011 Plan [Member] 71,430 units of restricted stock issued on 6/25/2013 vesting over 1yr [Member] | Oct. 31, 2013 2011 Plan [Member] 71,430 units of restricted stock issued on 6/25/2013 vesting over 1yr [Member] | Oct. 31, 2014 2011 Plan [Member] 71,430 units of restricted stock issued on 6/25/2013 vesting over 1yr [Member] | Oct. 31, 2013 2011 Plan [Member] 71,430 units of restricted stock issued on 6/25/2013 vesting over 1yr [Member] | Oct. 31, 2014 2011 Plan [Member] 31,250 units of restricted stock issued on 6/19/2012 vesting over 1 year | Oct. 31, 2013 2011 Plan [Member] 31,250 units of restricted stock issued on 6/19/2012 vesting over 1 year | Oct. 31, 2014 2011 Plan [Member] 31,250 units of restricted stock issued on 6/19/2012 vesting over 1 year | Oct. 31, 2013 2011 Plan [Member] 31,250 units of restricted stock issued on 6/19/2012 vesting over 1 year | Oct. 31, 2014 2011 Plan [Member] 520,000 Grants of Restricted Stock, issued 6/19/2012, vesting over 5 years [Member] | Oct. 31, 2013 2011 Plan [Member] 520,000 Grants of Restricted Stock, issued 6/19/2012, vesting over 5 years [Member] | Oct. 31, 2014 2011 Plan [Member] 520,000 Grants of Restricted Stock, issued 6/19/2012, vesting over 5 years [Member] | Oct. 31, 2013 2011 Plan [Member] 520,000 Grants of Restricted Stock, issued 6/19/2012, vesting over 5 years [Member] | Jul. 31, 2014 2011 Plan [Member] Restricted Stock or Stock Units [Member] | Oct. 31, 2014 2007 Plan [Member] Grants of Restricted Stock, issued 6/19/2012, vesting over 1 year [Member] | Oct. 31, 2013 2007 Plan [Member] Grants of Restricted Stock, issued 6/19/2012, vesting over 1 year [Member] | Oct. 31, 2014 2007 Plan [Member] Grants of Restricted Stock, issued 6/19/2012, vesting over 1 year [Member] | Oct. 31, 2013 2007 Plan [Member] Grants of Restricted Stock, issued 6/19/2012, vesting over 1 year [Member] | Oct. 31, 2014 2007 Plan [Member] 40,000 Grants of Restricted Stock, issued 3/21/2012, vesting immediately [Member] | Oct. 31, 2014 2007 Plan [Member] 68,960 Grants of Restricted Stock, issued 6/21/2011, vesting over 1 year [Member] | Oct. 31, 2014 2007 Plan [Member] 56,455 Grants of Restricted Stock, issued 6/8/2010, vesting over 1 year [Member] | Oct. 31, 2014 2007 Plan [Member] 382,500 Restricted Stock Units, issued 6/16/2009, vesting over 5 years [Member] | Oct. 31, 2013 2007 Plan [Member] 382,500 Restricted Stock Units, issued 6/16/2009, vesting over 5 years [Member] | Oct. 31, 2014 2007 Plan [Member] 382,500 Restricted Stock Units, issued 6/16/2009, vesting over 5 years [Member] | Oct. 31, 2013 2007 Plan [Member] 382,500 Restricted Stock Units, issued 6/16/2009, vesting over 5 years [Member] | Oct. 31, 2014 2007 Plan [Member] 262,500 Restricted Stock Units, issued 6/19/2007, vesting over 5 years [Member] | Oct. 31, 2014 2007 Plan [Member] Restricted Stock or Stock Units [Member] | Oct. 31, 2013 2007 Plan [Member] Restricted Stock or Stock Units [Member]
Summary of restricted stock and stock unit awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted |  |  |  |  |  | 28,626 |  | 490,000 |  |  | 10,000 |  |  |  | 71,430 |  |  |  | 31,250 |  |  |  | 520,000 |  | 0 |  |  | 78,125 |  | 40,000 | 68,960 | 56,455 |  |  | 382,500 |  | 262,500 | 0 | 0
Maximum term of stock options |  |  |  |  |  | 1 year |  | 5 years |  |  | 1 year |  |  |  | 1 year |  |  |  | 1 year |  |  |  | 5 years |  |  |  |  | 1 year |  |  | 1 year | 1 year |  |  | 5 years |  | 5 years |  |
Expense for 3 months and 9 months ended | $ 121,000 | $ 129,000 | $ 380,000 | $ 404,000 | $ 18,000 | $ 31,000 | $ 64,000 | $ 107,000 | $ 0 | $ 0 | $ 12,000 | $ 0 | $ 0 | $ 44,000 | $ 50,000 | $ 74,000 | $ 0 | $ 0 | $ 0 | $ 17,000 | $ 39,000 | $ 39,000 | $ 118,000 | $ 121,000 |  | $ 0 | $ 0 | $ 0 | $ 41,000 |  |  |  | $ 0 | $ 46,000 | $ 62,000 | $ 151,000 |  |  |
Unrecognized compensation at cost | $ 1,621,000 |  | $ 1,621,000 |  | $ 44,000 | $ 44,000 | $ 1,172,000 | $ 1,172,000 | $ 0 |  | $ 0 |  | $ 0 |  | $ 0 |  | $ 0 |  | $ 0 |  | $ 405,000 |  | $ 405,000 |  |  | $ 0 |  | $ 0 |  |  |  |  | $ 0 |  | $ 0 |  |  |  |
Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted |  |  |  |  |  | 28,626 |  | 490,000 |  |  | 10,000 |  |  |  | 71,430 |  |  |  | 31,250 |  |  |  | 520,000 |  | 0 |  |  | 78,125 |  | 40,000 | 68,960 | 56,455 |  |  | 382,500 |  | 262,500 | 0 | 0

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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 Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: 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 4: 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 Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation. + References No definition available. + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + 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 + Details
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