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Stock Based Compensation (Tables) | 6 Months Ended
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Jul. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of restricted stock and stock unit awards | The following table presents a summary of restricted stock and stock unit awards at July 31, 2013 and 2012:
|  |  |  |  |  |  |  |  |  |  |  |  |  | Unamortized Compensation
Date of |  | Units |  | Terms of |  | Expense for 3 months ended |  | Expense for 6 months ended |  | Cost at
Grants |  | Granted |  | Vesting |  | 7/31/2013 |  | 7/31/2012 |  | 7/31/2013 |  | 7/31/2012 |  | 7/31/2013
2011 Stock Incentive Plan
6/25/2013 |  | 83,335 |  | 1 year |  | $ | 30,000 |  |  | $ | — |  |  | $ | 30,000 |  |  | $ | — |  |  | $ | 145,000 |
6/19/2012 |  | 31,250 |  | 1 year |  | 4,000 |  |  | 8,286 |  |  | 17,000 |  |  | 8,286 |  |  | — |
6/19/2012 |  | 520,000 |  | 5 year |  | 40,000 |  |  | 28,000 |  |  | 82,000 |  |  | 28,000 |  |  | 601,000 |
2007 Stock Incentive Plan
6/19/2012 |  | 78,125 |  | 1 year |  | 11,000 |  |  | 20,714 |  |  | 41,000 |  |  | 20,714 |  |  | — |
3/21/2012 |  | 40,000 |  | Immediate |  | — |  |  | — |  |  | — |  |  | 80,000 |  |  | — |
6/21/2011 |  | 68,960 |  | 1 year |  | — |  |  | 17,000 |  |  | — |  |  | 67,000 |  |  | — |
6/16/2009 |  | 382,500 |  | 5 year |  | 49,000 |  |  | 56,000 |  |  | 105,000 |  |  | 113,000 |  |  | 155,000 |
6/19/2007 |  | 262,500 |  | 5 year |  | — |  |  | 24,000 |  |  | — |  |  | 98,000 |  |  | — |
|  |  |  |  |  | $ | 134,000 |  |  | $ | 154,000 |  |  | $ | 275,000 |  |  | $ | 415,000 |  |  | $ | 901,000 |

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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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