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Accounts receivable, net - Schedule of Accounts receivable, net (Detail) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Accounts receivable, net:
Allowance for doubtful accounts	$ (70)	$ (70)
Total accounts receivable, net	17,862	14,113
Security Products
Accounts receivable, net:
Accounts receivable, net	13,855	12,149
Marine Components
Accounts receivable, net:
Accounts receivable, net	$ 4,077	$ 2,034

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