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Employee Stock Compensation and Stock Repurchase Program (Details Textual) - USD ($) | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 31, 2017 | Jun. 21, 2017 | Jan. 31, 2017 | Jul. 19, 2016 | Jul. 08, 2015 | Oct. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  | $ 2,500,000 |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  |  |  |  | 55,500
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  |  |  |  | $ 11.00
Class of Warrant or Right, Outstanding | 55,500 |  | 55,500 |  |  |
Common Stock, Shares, Issued | 7,663,890 |  | 7,620,215 |  |  |
2012 Plan [Member] | Common Stock [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares | 293,887 |  |  |  |  |
2015 Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance |  |  |  |  | 100,000 |
Stock Issued During Period, Shares, Restricted Stock Award, Gross | 5,221 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares | 67,721 |  |  |  |  |
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures | 43,029 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period | 23,971 |  |  |  |  |
2015 Plan [Member] | Maximum [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance |  |  |  |  | 20,000 |
Bonus-in-stock program [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-Based Compensation Arrangement By Share-Based Payment Award, Purchase Price Of Common Stock, Percent | 133.00% |  |  |  |  |
2017 Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Common Stock, Shares, Issued |  | 360,000 |  |  |  |
Employees And Directors [Member] | 2012 Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 310,000 |  |  |  |  |

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