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Note 6 - Equity Investments in Unconsolidated Affiliate (Details Textual) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 USD ($) ft² | Dec. 31, 2021 USD ($) | Dec. 31, 2005
Expense To Acquire Inventory | $ 22,877,000 | $ 26,252,000 |
Income (Loss) from Equity Method Investments | 87,000 | 571,000 |
Proceeds from Sale of Productive Assets, Total | $ 570,000 | $ 1,931,000 |
Harmony [Member] | INDIA |  |  |
Number of Stores | 4 |  |
Number Of Stores Owned | 3 |  |
Number Of Stores Rented | 1 |  |
Harmony [Member] | INDIA | Manufacturing Building Products [Member] |  |  |
Area of Real Estate Property | ft² | 139,000 |  |
Harmony [Member] | INDIA | Manufacturing Coated Material and Sewing Proprietary Disposable Protective Apparel [Member] |  |  |
Area of Real Estate Property | ft² | 121,000 |  |
Harmony [Member] | INDIA | Sewing Proprietary Disposable Protective Apparel [Member] |  |  |
Area of Real Estate Property | ft² | 23,000 |  |
Harmony [Member] | INDIA | Manufacturing Of Building Products [Member] |  |  |
Area of Real Estate Property | ft² | 159,000 |  |
Harmony [Member] |  |  |
Equity Method Investments | $ 4,718,000 |  |
Equity Method Investment, Aggregate Cost | 1,450,000 |  |
Cumulative Equity In Income Of Unconsolidated Affiliate | 5,776,000 |  |
Proceeds from Equity Method Investment, Distribution, Return of Capital | 942,000 |  |
Proceeds from Equity Method Investment, Distribution | $ 1,489,000 |  |
Alpha Pro Tech Engineered Products [Member] | Harmony [Member] |  |  |
Equity Method Investment, Ownership Percentage |  |  | 41.66%
Maple Industries and Associates [Member] | Harmony [Member] |  |  |
Equity Method Investment, Ownership Percentage |  |  | 58.34%

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