Note 10 - Segments Reporting - Segment Information (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Mar. 31, 2026 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Segment sales | $ 18,674,000 | $ 16,672,000 | $ 33,259,000 | $ 30,494,000 | ||
| Cost of goods sold | 11,696,000 | 10,541,000 | 20,765,000 | 18,971,000 | ||
| Selling, general and administrative | 4,698,000 | 4,556,000 | 9,384,000 | 9,250,000 | ||
| Depreciation and amortization | 268,000 | 240,000 | 518,000 | 483,000 | ||
| Other income | 372,000 | 276,000 | 677,000 | 593,000 | ||
| Segment net income | 1,826,000 | $ 702,000 | 1,244,000 | $ 613,000 | 2,528,000 | 1,857,000 |
| Operating Segments [Member] | ||||||
| Segment net income | 3,847,000 | 3,004,000 | 6,117,000 | 4,996,000 | ||
| Operating Segments [Member] | Building Supply [Member] | ||||||
| Segment sales | 11,692,000 | 11,084,000 | 19,551,000 | 19,456,000 | ||
| Cost of goods sold | 7,759,000 | 7,162,000 | 13,221,000 | 12,530,000 | ||
| Selling, general and administrative | 1,738,000 | 1,748,000 | 3,447,000 | 3,626,000 | ||
| Depreciation and amortization | 189,000 | 187,000 | 378,000 | 376,000 | ||
| Other income | (133,000) | (117,000) | (233,000) | (236,000) | ||
| Segment net income | 2,139,000 | 2,104,000 | 2,738,000 | 3,160,000 | ||
| Operating Segments [Member] | Disposable Protective Apparel [Member] | ||||||
| Segment sales | 6,982,000 | 5,588,000 | 13,708,000 | 11,038,000 | ||
| Cost of goods sold | 3,937,000 | 3,379,000 | 7,544,000 | 6,441,000 | ||
| Selling, general and administrative | 1,351,000 | 1,301,000 | 2,811,000 | 2,749,000 | ||
| Depreciation and amortization | 61,000 | 28,000 | 104,000 | 54,000 | ||
| Other income | (75,000) | (20,000) | (130,000) | (42,000) | ||
| Segment net income | $ 1,708,000 | $ 900,000 | $ 3,379,000 | $ 1,836,000 | ||
| 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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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. 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 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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- 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 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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