Note 1 - Condensed Consolidated Financial Statements - Segment Reporting (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Mar. 31, 2026 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Sales, net | $ 23,414 | $ 21,165 | $ 44,707 | $ 40,219 | ||||
| Cost of products | 11,271 | 11,130 | 21,535 | 21,234 | ||||
| Gross margin | 12,143 | 10,035 | 23,172 | 18,985 | ||||
| Engineering and product development | 3,957 | 2,306 | 7,621 | 5,033 | ||||
| General and administrative | 2,500 | 1,791 | 4,758 | 3,258 | ||||
| Selling, general and administrative expenses | 8,314 | 6,038 | 16,054 | 12,072 | ||||
| Operating income | 3,829 | 3,997 | 7,118 | 6,913 | ||||
| Income tax (expense) | 835 | 275 | 1,517 | 945 | ||||
| Net income (loss) | 3,168 | $ 2,762 | 3,741 | $ 2,132 | 5,930 | 5,873 | ||
| Operating Segments [Member] | Single Reportable Segment [Member] | ||||||||
| Sales, net | 23,414 | 21,165 | 44,707 | 40,219 | ||||
| Cost of products | 11,271 | 11,130 | 21,535 | 21,234 | ||||
| Gross margin | 12,143 | 10,035 | 23,172 | 18,985 | ||||
| Engineering and product development | 3,957 | 2,306 | 7,621 | 5,033 | ||||
| Marketing and selling | 1,857 | 1,941 | 3,675 | 3,781 | ||||
| General and administrative | 2,500 | 1,791 | 4,758 | 3,258 | ||||
| Selling, general and administrative expenses | 8,314 | 6,038 | 16,054 | 12,072 | ||||
| Operating income | 3,829 | 3,997 | 7,118 | 6,913 | ||||
| Other income (expense) (a) | [1] | 174 | 19 | 329 | (95) | |||
| Income tax (expense) | (835) | (275) | (1,517) | (945) | ||||
| Net income (loss) | $ 3,168 | $ 3,741 | $ 5,930 | $ 5,873 | ||||
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- 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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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- 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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- 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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- Definition Expenditures for planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services. Costs of public relations and corporate promotions are typically considered to be marketing costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- 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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- 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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- 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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- 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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- Definition Amount of other expense (income) and loss (gain) calculated as difference between segment revenue and separately disclosed expense category to arrive at segment profit (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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