Note 5 - Stockholders' Equity - Restricted Stock Unit Awards Outstanding Under the Plans (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares |
3 Months Ended | |
|---|---|---|
May 31, 2018 |
May 31, 2017 |
|
| Outstanding non-vested restricted stock units as of February 28: (in shares) | 77,594 | 123,658 |
| Granted (in shares) | ||
| Vested (in shares) | ||
| Cancelled/forfeited (in shares) | (560) | |
| Outstanding non-vested restricted stock units as of May 31: (in shares) | 77,594 | 123,098 |
| Weighted average grant date fair value (in dollars per share) | $ 12.16 | $ 12.21 |
| Weighted average remaining vesting period (in years) (Year) | 1 year 7 days | 1 year 357 days |
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- 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). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The weighted average fair value at grant date for nonvested equity-based awards issued 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). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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