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Note 15 - Activity of Business Segments (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
|  | Years Ended December 31, |
|  | 2019 |  |  | 2018 |
Building Supply |  | $ | 26,576,000 |  |  | $ | 26,035,000 |
Disposable Protective Apparel |  |  | 20,089,000 |  |  |  | 20,589,000 |
Consolidated net sales |  | $ | 46,665,000 |  |  | $ | 46,624,000 |
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  | Years Ended December 31, |
|  | 2019 |  |  | 2018 |
Building Supply |  | $ | 3,491,000 |  |  | $ | 3,836,000 |
Disposable Protective Apparel |  |  | 3,856,000 |  |  |  | 4,584,000 |
Total segment income |  |  | 7,347,000 |  |  |  | 8,420,000 |
Unallocated corporate overhead expenses |  |  | 3,667,000 |  |  |  | 4,006,000 |
Provision for income taxes |  |  | 680,000 |  |  |  | 789,000 |
Consolidated net income |  | $ | 3,000,000 |  |  | $ | 3,625,000 |
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] |
|  | Years Ended December 31, |
|  | 2019 |  |  | 2018 |
Net sales by geographic region |  |  |  |  |  |  |  |
United States |  | $ | 45,748,000 |  |  | $ | 45,595,000 |
International |  |  | 917,000 |  |  |  | 1,029,000 |
Consolidated net sales |  | $ | 46,665,000 |  |  | $ | 46,624,000 |
|  | As of December 31, |
|  | 2019 |  |  | 2018 |
Long-lived assets by geographic region |  |  |  |  |  |  |  |
United States |  | $ | 2,450,000 |  |  | $ | 2,528,000 |
International |  |  | 1,493,000 |  |  |  | 716,000 |
Consolidated total long-lived assets |  | $ | 3,943,000 |  |  | $ | 3,244,000 |
Reconciliation of Assets from Segment to Consolidated [Table Text Block] |
|  | As of December 31, |
|  | 2019 |  |  | 2018 |
Building Supply |  | $ | 1,867,000 |  |  | $ | 1,908,000 |
Disposable Protective Apparel |  |  | 1,087,000 |  |  |  | 400,000 |
Total segment assets |  |  | 2,954,000 |  |  |  | 2,308,000 |
Unallocated corporate assets |  |  | 1,055,000 |  |  |  | 1,007,000 |
Total consolidated assets |  | $ | 4,009,000 |  |  | $ | 3,315,000 |

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