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Inventories, net | 12 Months Ended
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Dec. 31, 2023
Inventory Disclosure [Abstract] |
Inventories, net | Note 5 – Inventories, net: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
​ |  | 2022 |  | 2023
​ | ​ | (In thousands)
Raw materials: |  | ​ |  |  | ​ |
Security Products | ​ | $ | 4,172 | ​ | $ | 3,569
Marine Components | ​ |  | 2,073 | ​ |  | 2,169
Total raw materials | ​ |  | 6,245 | ​ |  | 5,738
Work-in-process: | ​ |  |  | ​ |  |
Security Products | ​ |  | 14,193 | ​ |  | 13,879
Marine Components | ​ |  | 5,790 | ​ |  | 5,163
Total work-in-process | ​ |  | 19,983 | ​ |  | 19,042
Finished goods: | ​ |  |  | ​ |  |
Security Products | ​ |  | 3,163 | ​ |  | 3,175
Marine Components | ​ |  | 1,899 | ​ |  | 2,757
Total finished goods | ​ |  | 5,062 | ​ |  | 5,932
Total inventories, net | ​ | $ | 31,290 | ​ | $ | 30,712
​

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//330/tableOfContent + Details
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