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Business and Geographic Information (Tables) | 12 Months Ended
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Dec. 31, 2021
Segments Geographical Areas [Abstract] |
Schedule of Disaggregates Net Sales By Reporting Unit | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years ended December 31,
​ |  | 2019 |  | 2020 |  | 2021
​ | ​ | (In thousands)
Net sales: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Security Products | ​ | $ | 99,328 | ​ | $ | 87,863 | ​ | $ | 105,124
Marine Components | ​ |  | 24,915 | ​ |  | 26,674 | ​ |  | 35,691
Total | ​ | $ | 124,243 | ​ | $ | 114,537 | ​ | $ | 140,815
Geographical Information Attributable to Net Sales | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years ended December 31,
​ |  | 2019 |  | 2020 |  | 2021
​ | ​ | (In thousands)
Net sales - point of destination: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
United States | ​ | $ | 114,186 | ​ | $ | 107,712 | ​ | $ | 129,160
Canada | ​ |  | 7,257 | ​ |  | 4,423 | ​ |  | 8,061
Mexico | ​ |  | 922 | ​ |  | 431 | ​ |  | 589
Other | ​ |  | 1,878 | ​ |  | 1,971 | ​ |  | 3,005
Total | ​ | $ | 124,243 | ​ | $ | 114,537 | ​ | $ | 140,815

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- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 + Details
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