CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]
Balances at Feb. 28, 2013	$ 117,549	$ 350	$ 202,368	$ (85,104)	$ (65)
Balances (in shares) at Feb. 28, 2013		35,041
Net income	11,803			$ 11,803
Stock-based compensation expense	$ 2,924		$ 2,924
Issuance of shares for restricted stock awards		$ 1	(1)
Issuance of shares for restricted stock awards (in shares)		90
Shares issued on net share settlement of equity awards	$ (3,057)	$ 2	(3,059)
Shares issued on net share settlement of equity awards (in shares)		180
Exercise of stock options	$ 3,928	$ 6	3,922
Exercise of stock options (in shares)		548
Foreign currency cumulative translation adjustment
Balances (in shares) at Feb. 28, 2014		35,859
Balances at Feb. 28, 2014	$ 133,147	$ 359	$ 206,154	$ (73,301)	$ (65)
Net income	16,508			$ 16,508
Stock-based compensation expense	$ 4,100		$ 4,100
Issuance of shares for restricted stock awards		$ 1	(1)
Issuance of shares for restricted stock awards (in shares)		106
Shares issued on net share settlement of equity awards	$ (3,088)	$ 1	(3,089)
Shares issued on net share settlement of equity awards (in shares)		117
Exercise of stock options	$ 718	$ 1	717
Exercise of stock options (in shares)		143
Foreign currency cumulative translation adjustment
Balances (in shares) at Feb. 28, 2015		36,225
Balances at Feb. 28, 2015	$ 151,385	$ 362	$ 207,881	$ (56,793)	$ (65)
Net income	16,940			$ 16,940
Stock-based compensation expense	5,854		$ 5,854
Equity component of convertible senior notes, net of tax	20,104		20,104
Purchase of note hedges, net of tax	(19,324)		(19,324)
Sale of warrants	$ 15,991		15,991
Issuance of shares for restricted stock awards		$ 1	(1)
Issuance of shares for restricted stock awards (in shares)		115
Shares issued on net share settlement of equity awards	$ (2,625)	$ 1	(2,626)
Shares issued on net share settlement of equity awards (in shares)		99
Exercise of stock options	1,283	$ 3	$ 1,280
Exercise of stock options (in shares)		228
Foreign currency cumulative translation adjustment	(161)				$ (161)
Balances (in shares) at Feb. 29, 2016		36,667
Balances at Feb. 29, 2016	$ 189,447	$ 367	$ 229,159	$ (39,853)	$ (226)

Amount of increase (decrease) to additional paid in capital (APIC) resulting from purchase of note hedges, net of tax.

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Adjustment to additional paid in capital resulting from the recognition of convertible debt instruments as two separate components - a debt component and an equity component. This bifurcation may result in a basis difference associated with the liability component that represents a temporary difference for purposes of applying accounting for income taxes. The initial recognition of deferred taxes for the tax effect of that temporary difference is as an adjustment to additional paid in capital.

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This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

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Amount of increase in additional paid in capital (APIC) resulting from the issuance of warrants. Includes allocation of proceeds of debt securities issued with detachable stock purchase warrants.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

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Number of shares issued which are neither cancelled nor held in the treasury.

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Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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Number of share options (or share units) exercised during the current period.

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Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited.

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Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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Value of stock issued as a result of the exercise of stock options.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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