v3.8.0.1

Condensed Consolidated Statement of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Common stock | Treasury stock | Additional paid-in capital | Accumulated other comprehensive income (loss) | Accumulated deficit
--- | --- | --- | --- | --- | --- | ---
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  | $ 326 |  | $ (326)
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 | 9,649 |  |  | 9,649 |  |
Vested restricted stock units converted to shares, shares |  | 21 |  |  |  |
Issuance of common stock upon exercise of stock options, shares |  | 126 |  |  |  |
Issuance of common stock upon exercise of stock options | 462 |  |  | 462 |  |
Vested restricted stock units converted to shares |  | 1,535 |  |  |  |
Tax withholdings related to net share settlements of stock-based compensation awards, shares |  | (174) |  |  |  |
Tax withholdings related to net share settlements of stock-based compensation awards | (825) |  |  | (825) |  |
Shares issued under employee stock purchase plans, shares |  | 257 |  |  |  |
Shares issued under employee stock purchase plans | 938 |  |  | 938 |  |
Change in foreign currency translation adjustment | 292 |  |  |  | 292 |
Change in unrealized gain on investments | 21 |  |  |  | 21 |
Net loss | (2,371) |  |  |  |  | (2,371)
Ending balance, Shares at Oct. 31, 2017 |  | 86,253 | (200) |  |  |
Ending balance at Oct. 31, 2017 | $ 194,471 | $ 8 | $ 0 | $ 466,305 | $ (1,369) | $ (270,473)

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- Definition 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". + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66904339&loc=d3e4534-113899 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65896087&loc=d3e11149-113907 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=65896087&loc=d3e11178-113907 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=64809438&loc=SL4573702-111684 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569643-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569616-111683 + Details
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