Summary of Share-Based Awards Granted During Period (Parenthetical) (Detail)	3 Months Ended
May 31, 2017
Performance Share Units - Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Targeted percentage of performance share units earned by executive	200.00%
Performance Share Units - Target \| Share-based Compensation Award, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting right description	Half of the target number of PSUs can be earned by the grantees depending upon the Company's financial performance measured against the financial performance of specified peer companies during a three-year performance period beginning on March 1, 2017.
Performance Share Units - Target \| Share-based Compensation Award, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting right description	The remaining target number of PSUs can be earned by the grantees depending upon the Company's total shareholder return performance measured against the total shareholder return performance of specified peer companies during a three-year period beginning on March 1, 2017.
Performance Share Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting right description	These shares were awarded subject to the achievement of a specified dollar amount of revenue for the fiscal year ending February 28, 2018 (the “RSA Performance Goal”). If the Company fails to achieve the RSA Performance Goal for the fiscal year ending February 28, 2018, then all such shares are forfeited. If the Company achieves the RSA Performance Goal for the fiscal year ending February 28, 2018, then 25% of the restricted stock vests on or about July 16, 2018, and the remainder vests ratably on a quarterly basis over the course of the subsequent three-year period, provided that the grantee’s business relationship with the Company has not ceased.
Percentage vested after one year if performance conditions achieved	25.00%

Percentage of vesting of share-based compensation awards related to first tranche. Vesting predicated on performance conditions being met.

No definition available.

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- Definition

Maximum percentage of target number of performance share units that can be earned based on specified performance or market measures.

+ References

No definition available.

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- Definition

Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

+ 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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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.

+ References

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