Share Based Payments - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions	3 Months Ended
May 31, 2018	May 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from Stock Options Exercised	$ 100,000	$ 100,000
Risk-Free Interest Rate:	2.60%	1.90%
Stock options granted, term	10 years
Stock options vesting period	3 years
Annual percentage over three years	33.33%
Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options	$ 0	$ 0.00
Stock options weighted average grant date fair value	$ 2.03	$ 1.15
Shares available for future grants	2.2
Restricted stock awards requisite service period	3 years
Grant date fair value of shares vested	$ 200,000	$ 100,000
Compensation expenses	463,000	$ 689,000
Unrecognized compensation cost	$ 1,200,000
Compensation cost of weighted average period	1 year 8 months 15 days
Other Compensation Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grants	0.3
Two Thousand Sixteen Equity Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grants	1.9
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting dates of outstanding options	2018-07
Expiration dates of options	2018-07
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting dates of outstanding options	2021-03
Expiration dates of options	2028-03

Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period Annual Percentage

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Options Award Vesting Date Month And Year

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Share Based Compensation Arrangement by Share Based Payment Award Options Expiration Year Month

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- Definition

Share based compensation share based payment award option grant period maximum.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount of tax benefit from exercise of stock options granted under share-based compensation arrangement.

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- Definition

Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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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.

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