Income taxes (Details) - Deferred tax assets and liabilities - USD ($) $ in Thousands |
Jul. 31, 2016 |
Jul. 31, 2015 |
|---|---|---|
| Deferred tax assets: | ||
| Federal tax carryforward losses | $ 18,964 | $ 35,411 |
| Provision for uncollectible accounts receivable | 1,406 | 685 |
| State and local tax carry forward losses | 2,757 | 2,661 |
| Accrued royalties | 146 | 144 |
| Stock compensation | 616 | 99 |
| Depreciation | 769 | 618 |
| Research and development and other tax credit carryforwards | 2,152 | 1,134 |
| Foreign tax carryforward losses | 2,046 | 1,476 |
| Intangibles | 2,915 | 2,951 |
| Inventory | 2,477 | 2,558 |
| Accrued expenses | 1,321 | 2,627 |
| Unrealized foreign exchange | 100 | 98 |
| Other, net | 63 | 18 |
| Deferred tax assets | 35,732 | 50,480 |
| Deferred tax liabilities: | ||
| Deferred patent costs | (152) | |
| Prepaid expenses | (820) | (676) |
| Other, net | (31) | |
| Deferred tax liabilities | (820) | (859) |
| Net deferred tax assets before valuation allowance | 34,912 | 49,621 |
| Less: valuation allowance | $ (34,912) | (49,658) |
| Net deferred tax liabilities | $ (37) |
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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 temporary differences from accrued royalties. No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from research and development and other tax credit carry forwards. No definition available.
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- Definition Amount of federal tax carry forward losses as of the reporting date. No definition available.
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- Definition Amount of net deferred tax assets (liabilities) before valuation allowance as of the reporting date. 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 temporary differences from intangible assets including goodwill. No definition available.
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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 before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory. 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 state and local 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 temporary differences, 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 temporary differences from property, plant, and equipment. No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign 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 accrued liabilities. 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 unrealized losses on foreign currency transactions. 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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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. 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 patent costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses. No definition available.
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