Income Taxes (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Jul. 31, 2021 |
Jul. 31, 2020 |
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| Income Tax Disclosure [Abstract] | ||
| Valuation allowance, deferred tax asset, increase (decrease), amount | $ (200) | $ 6,600 |
| Net operating loss carryforwards, description | the Company had U.S. federal net operating loss carryforwards of approximately $85,600 of which $58,500, if not fully utilized, expire between 2030 and 2038 and which $27,100 do not expire. Utilization is dependent on generating sufficient taxable income prior to expiration of the tax loss carryforwards. In addition, the Company has research and development tax credit carryforwards of approximately $1,500 which expire between 2025 and 2041. As of July 31, 2021, the Company has state and local net operating loss carryforwards of approximately $28,800, which if not fully utilized, expire between 2038 and 2041. | |
| Foreign loss carryforwards | $ 10,700 | |
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are not subject to expiration dates. No definition available.
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| X | ||||||||||
- References No definition available.
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- Definition A brief description of status of the tax examination, significant findings to date, and the entity's position with respect to the findings. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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