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Note 14 - Activity of Business Segments - Consolidated Net Sale (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Net sales | $ 59,142,000 | $ 57,840,000
Cost of goods sold, excluding depreciation and amortization | 36,605,000 | 34,907,000
Selling, general and administrative | 17,773,000 | 18,611,000
Depreciation and amortization | 925,000 | 873,000
Other income | 830,000 | 1,571,000
Net income | 3,531,000 | 3,929,000
Operating Segments [Member] |  |
Net income | 9,644,000 | 10,227,000
Operating Segments [Member] | Building Supply [Member] |  |
Net sales | 36,031,000 | 35,965,000
Cost of goods sold, excluding depreciation and amortization | 23,179,000 | 22,902,000
Selling, general and administrative | 6,830,000 | 7,191,000
Depreciation and amortization | 711,000 | 661,000
Other income | (155,000) | (535,000)
Net income | 5,466,000 | 5,746,000
Operating Segments [Member] | Disposable Protective Apparel [Member] |  |
Net sales | 23,111,000 | 21,875,000
Cost of goods sold, excluding depreciation and amortization | 13,426,000 | 12,005,000
Selling, general and administrative | 5,422,000 | 5,375,000
Depreciation and amortization | 112,000 | 108,000
Other income | (27,000) | (94,000)
Net income | $ 4,178,000 | $ 4,481,000

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