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Accounts Receivable, Net | 12 Months Ended
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Dec. 31, 2021
Receivables [Abstract] |
Accounts Receivable, Net | Note 3 – Accounts receivable, net: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
​ |  | 2020 |  | 2021
​ | ​ | (In thousands)
Accounts receivable, net: |  | ​ |  |  | ​ |
Security Products | ​ | $ | 8,797 | ​ | $ | 12,896
Marine Components | ​ |  | 2,004 | ​ |  | 2,720
Allowance for doubtful accounts | ​ |  | (70) | ​ |  | (70)
Total accounts receivable, net | ​ | $ | 10,731 | ​ | $ | 15,546
​

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- Definition The entire disclosure for financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2196816 + Details
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