v3.7.0.1

Condensed Consolidated Statement of Changes in Stockholders' Equity - 3 months ended Jul. 31, 2017 - USD ($) shares in Thousands, $ in Thousands	Total	Common stock	Treasury stock	Additional paid-in capital	Accumulated other comprehensive income (loss)	Accumulated deficit
Beginning balance, Shares at Apr. 30, 2017		84,488	(200)
Beginning balance at Apr. 30, 2017	$ 186,305	$ 8	$ 0	$ 455,755	$ (1,682)	$ (267,776)
Stock-based expense	4,959			4,959
Issuance of common stock upon exercise of stock options, shares		99
Issuance of common stock upon exercise of stock options	378			378
Vested restricted stock units converted to shares, shares		1,362
Tax withholdings related to net share settlements of stock-based compensation awards, shares		(163)
Tax withholdings related to net share settlements of stock-based compensation awards	(777)			(777)
Change in foreign currency translation adjustment	283				283
Change in unrealized gain on investments	(14)				(14)
Net loss	(2,316)					(2,316)
Ending balance, Shares at Jul. 31, 2017		85,786	(200)
Ending balance at Jul. 31, 2017	$ 188,818	$ 8	$ 0	460,641	$ (1,413)	(270,418)
Cumulative Effect of New Accounting Principle in Period of Adoption				$ 326		$ (326)

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The amount of adjustment to stockholders' equity associated with an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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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 after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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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 appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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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