Revenue recognition - Schedule of Disaggregation of Net Sales By Reporting Unit (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation Of Revenue [Line Items]
Net sales	$ 40,366	$ 35,887	$ 80,638	$ 73,858
Security Products
Disaggregation Of Revenue [Line Items]
Net sales	30,683	28,213	60,913	58,100
Marine Components
Disaggregation Of Revenue [Line Items]
Net sales	$ 9,683	$ 7,674	$ 19,725	$ 15,758

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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+ Details