Income Taxes - Components of Net Deferred Tax Amounts Recognized in Accompanying Consolidated Balance Sheet (Details) - USD ($) $ in Thousands |
Apr. 30, 2017 |
Apr. 30, 2016 |
|---|---|---|
| Deferred tax asset: | ||
| Bad debts | $ 466 | $ 872 |
| Other accruals | 2,363 | 1,138 |
| Charitable contributions | 436 | 509 |
| Stock options | 7,300 | 5,832 |
| State tax credit | 2,633 | 2,347 |
| Net operating losses | 66,431 | 64,998 |
| Research and development credit | 6,869 | 6,290 |
| Deferred rent | 2,333 | 2,513 |
| Deferred revenue | 810 | 1,969 |
| Foreign tax credit | 128 | 128 |
| Total deferred tax asset | 89,769 | 86,596 |
| Less valuation allowance | (78,558) | (73,806) |
| Net deferred tax assets | 11,211 | 12,790 |
| Deferred tax liability: | ||
| Amortization of intangible assets | (2,854) | (3,564) |
| Depreciation | (6,628) | (7,476) |
| Total deferred tax liability | (9,482) | (11,040) |
| Total net deferred tax assets | $ 1,729 | $ 1,750 |
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- Definition Deferred Tax Assets Tax Credit Carry forwards State And Local No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible charitable contribution carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible tax credit carryforwards, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred rent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from reserves and accruals, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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