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Income Taxes - Narrative (Details) - USD ($) |  | 1 Months Ended | 3 Months Ended |
--- | --- | --- | --- | ---
Mar. 27, 2020 | Dec. 31, 2020 | Oct. 31, 2020 | Jul. 31, 2021 | Oct. 31, 2021
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Valuation allowance on deferred tax assets |  |  | $ 540,000 |  | $ 1,324,000
Operating loss carryforwards |  |  |  |  | 6,312,000
Unrecognized tax benefits |  |  | 0 |  | 0
Income tax examination, penalties and interest accrued |  |  |  |  | 0
COVID-19 |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Discrete tax benefit | $ 1,948,000 |  |  |  |
Income tax refund | $ 5,801,000 |  |  |  |
Proceeds from income tax refund |  | $ 4,960,000 | $ 841,000 | $ 948,000 |
Federal |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Operating loss carryforwards |  |  |  |  | $ 17,443,000
Net operating loss carryforward limitation as a percent of taxable income |  |  |  |  | 80.00%
Disallowed interest expense carryforwards |  |  |  |  | $ 0
State |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Operating loss carryforwards |  |  |  |  | 21,277,000
Disallowed interest expense carryforwards |  |  |  |  | $ 2,065,000

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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible interest carryforward. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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