Note 8 - Segment Information - Schedule of Segment Information (Details) - USD ($) |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Jul. 31, 2026 |
Jul. 31, 2025 |
Jul. 31, 2026 |
Jul. 31, 2025 |
Oct. 31, 2025 |
|
| Net sales | $ 23,960,000 | $ 19,790,000 | $ 63,621,000 | $ 57,900,000 | |
| Total cost of goods sold | 15,422,000 | 13,071,000 | 41,696,000 | 39,514,000 | |
| Gross profit | 8,538,000 | 6,719,000 | 21,925,000 | 18,386,000 | |
| Engineering expense | 1,074,000 | 759,000 | 2,842,000 | 2,124,000 | |
| Total operating expenses | 6,779,000 | 5,999,000 | 18,891,000 | 17,504,000 | |
| Operating income | 1,759,000 | 720,000 | 3,034,000 | 882,000 | |
| Other expense | (233,000) | (240,000) | (585,000) | (721,000) | |
| Income before provision for income taxes | 1,526,000 | 480,000 | 2,449,000 | 161,000 | |
| Income Tax Expense (Benefit) | 84,000 | 88,000 | 178,000 | 259,000 | |
| Consolidated net income (loss) | 1,442,000 | 392,000 | 2,271,000 | (98,000) | |
| Total assets | 72,097,000 | 72,097,000 | $ 73,046,000 | ||
| Single Reportable Segment [Member] | |||||
| Net sales | 23,960,000 | 19,790,000 | 63,621,000 | 57,900,000 | |
| Material cost | 10,327,000 | 8,595,000 | 27,190,000 | 26,485,000 | |
| Salaries and benefits | 3,864,000 | 3,391,000 | 10,873,000 | 9,966,000 | |
| Depreciation | 121,000 | 133,000 | 371,000 | 397,000 | |
| Other costs of sales | 1,110,000 | 952,000 | 3,262,000 | 2,666,000 | |
| Total cost of goods sold | 15,422,000 | 13,071,000 | 41,696,000 | 39,514,000 | |
| Gross profit | 8,538,000 | 6,719,000 | 21,925,000 | 18,386,000 | |
| Salaries and benefits | 2,089,000 | 2,208,000 | 6,542,000 | 6,654,000 | |
| Engineering expense | 1,074,000 | 759,000 | 2,842,000 | 2,124,000 | |
| Share-Based Payment Arrangement, Expense | 283,000 | 219,000 | 824,000 | 640,000 | |
| Commission and bonus | 1,280,000 | 991,000 | 2,320,000 | 1,994,000 | |
| Depreciation | 81,000 | 73,000 | 238,000 | 218,000 | |
| Amortization | 411,000 | 411,000 | 1,233,000 | 1,233,000 | |
| Corporate and public company fees | 434,000 | 366,000 | 1,480,000 | 1,175,000 | |
| Selling and general | 1,127,000 | 972,000 | 3,412,000 | 3,343,000 | |
| Non-cash and one-time charges | 0 | 0 | 0 | 123,000 | |
| Total operating expenses | 6,779,000 | 5,999,000 | 18,891,000 | 17,504,000 | |
| Operating income | 1,759,000 | 720,000 | 3,034,000 | 882,000 | |
| Other expense | (233,000) | (240,000) | (585,000) | (721,000) | |
| Income before provision for income taxes | 1,526,000 | 480,000 | 2,449,000 | 161,000 | |
| Income Tax Expense (Benefit) | 84,000 | 88,000 | 178,000 | 259,000 | |
| Consolidated net income (loss) | 1,442,000 | 392,000 | 2,271,000 | (98,000) | |
| Total assets | 72,097,000 | 73,201,000 | 72,097,000 | 73,201,000 | |
| Expenditures for Segment Assets | $ 127,000 | $ 108,000 | $ 377,000 | $ 170,000 | |
| X | ||||||||||
- Definition Period expense related to commissions and bonuses. No definition available.
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| X | ||||||||||
- Definition Amount of expense for corporate and public company fees. No definition available.
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| X | ||||||||||
- Definition Cost of goods sold classified as other. No definition available.
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| X | ||||||||||
- Definition Amount of expense related to non-cash and one-time charges. No definition available.
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| X | ||||||||||
- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general expenses. No definition available.
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| X | ||||||||||
- Definition The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Cost of labor directly related to good produced and service rendered. Includes, but is not limited to, payroll cost and equity-based compensation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Cost of material used for good produced and service rendered. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of expense for allocation of cost of tangible asset over its useful life directly used in production of good and rendering of service. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- 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/disclosureRef
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| X | ||||||||||
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of expense for salary and wage arising from service rendered by nonofficer and officer employees. Excludes allocated cost, labor-related nonsalary expense, and direct and overhead labor cost included in cost of good and service sold. No definition available.
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| X | ||||||||||
- Definition Amount of expenditure for addition to long-lived asset included in determination of segment asset by chief operating decision maker (CODM) or otherwise regularly provided to CODM. Long-lived asset excludes financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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