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Deferred and restricted stock (Notes) | 12 Months Ended
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Jan. 31, 2017
Restricted stock [Abstract] |
Schedule of deferred and restricted Stock [Table Text Block] | Deferred stock In June 2016 under the Omnibus Plan described above, the Company granted deferred stock units to each non-employee director at the time of the annual meeting of stockholders equal to the result of dividing $40,000 by the fair market value of the common stock on the date of grant. The stock will be distributed to the directors upon their separation from service. As of January 31, 2017, there were approximately 60,495 deferred stock units outstanding included in restricted stock activity below.
| 2016 |  | 2015 |
Deferred compensation liabilities |  | $529 |  |  | $495 |
Restricted stock In June 2016 under the Omnibus Plan described above, the Company granted restricted stock to Tier I and Tier II executive officers. The restricted stock vest ratably over three years. Until restricted stock becomes vested and nonforfeitable, it may not be sold, assigned, transferred, pledged, hypothecated or disposed of in any way (whether by operation of law or otherwise), except by will or the laws of descent and distribution, and shall not be subject to execution, attachment or similar process. The Company issues new shares from its treasury stock or authorized but unissued share pool. The Company calculates restricted stock compensation expense based on the grant date fair value and recognizes expense on a straight-line basis over the vesting period. The following table summarizes restricted stock activity for the years ended January 31, 2017 and 2016, respectively:
| Restricted shares |  | Weighted average grant price |  | Aggregate intrinsic value |
Outstanding on January 31, 2015 | 86 |  |  | $14.52 |  |  | $1,242 |
Granted | 108 |  | 6.38 |  |
Issued | (26 | ) |  |
Forfeited | (5 | ) | 6.38 |  |
Outstanding on January 31, 2016 | 163 |  |  | $6.40 |  |  | $1,040 |
Granted | 254 |  | 7.29 |  |
Issued | (91 | ) |  |
Forfeited or used to cover payroll taxes | (36 | ) | 7.75 |  |
Outstanding on January 31, 2017 | 290 |  |  | $8.75 |  |  | $2,540 |
As of January 31, 2017, there was $1.2 million of unrecognized compensation cost related to unvested restricted stock granted under the plans. That cost is expected to be recognized over the weighted-average period of 2.2 years.

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- Definition Restricted stock [Abstract] + References No definition available. + Details
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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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