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Condensed Consolidated Statements of Changes in Stockholders' Equity (USD $)
In Thousands |
Total
USD ($)
|
Common Stock
USD ($)
|
Treasury Stock
|
Additional Paid-in Capital
USD ($)
|
Accumulated Other Comprehensive Income (Loss)
USD ($)
|
Accumulated Deficit
USD ($)
|
|---|---|---|---|---|---|---|
| Beginning balance at Apr. 30, 2014 | $ 206,462 | $ 8 | $ 398,201 | $ 328 | $ (192,075) | |
| Beginning balance, Shares at Apr. 30, 2014 | 77,888 | (250) | ||||
| Excess tax benefit related to stock-based expense | 1 | 1 | ||||
| Stock-based expense | 3,246 | 3,246 | ||||
| Exercise of stock options and vested restricted stock units, Shares | 384 | |||||
| Exercise of stock options and vested restricted stock units | 574 | 574 | ||||
| Change in foreign currency translation adjustment | (2) | (2) | ||||
| Change in unrealized gain on investments | 47 | 47 | ||||
| Net loss applicable to common stockholders | (11,565) | (11,565) | ||||
| Ending balance at Jul. 31, 2014 | $ 198,763 | $ 8 | $ 402,022 | $ 373 | $ (203,640) | |
| Ending balance, Shares at Jul. 31, 2014 | 78,272 | (250) |
| X | ||||||||||
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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". Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of shares issued which are neither cancelled nor held in the treasury. No definition available.
|
| X | ||||||||||
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- Definition
Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Value of stock issued as a result of the exercise of stock options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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