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Stock Option Plan and Stock Based Compensation - Summary of Unvested Stock Options (Detail) - $ / shares | 12 Months Ended
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Feb. 29, 2016 | Feb. 28, 2015 | Feb. 28, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |  |  |
Unvested Beginning Balance, Number of Options | 79,760 |  |
New grants, Number of Options | 43,426 | 31,418 | 36,155
Vested, Number of Options | (46,761) |  |
Forfeited, Number of Options | 0 |  |
Unvested Ending Balance, Number of Options | 76,425 | 79,760 |
Unvested Beginning Balance, Weighted Average Grant Date Fair Value | $ 2.51 |  |
New grants, Weighted Average Grant Date Fair Value | 2.24 | $ 2.70 | $ 1.96
Vested, Weighted Average Grant Date Fair Value | 2.58 |  |
Forfeited, Weighted Average Grant Date Fair Value | 0 |  |
Unvested Ending Balance, Weighted Average Grant Date Fair Value | $ 2.32 | $ 2.51 |

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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
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