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Revenue Recognition - Schedule of Disaggregates Net Sales By Reporting Unit (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Total net sales	$ 36,253	$ 23,800	$ 72,177	$ 56,111
Security Products
Disaggregation Of Revenue [Line Items]
Total net sales	27,587	18,573	53,472	44,042
Marine Components
Disaggregation Of Revenue [Line Items]
Total net sales	$ 8,666	$ 5,227	$ 18,705	$ 12,069

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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.

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