Inventories, Net - Inventories, Net (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Inventory [Line Items]
Total raw materials	$ 5,254	$ 5,738
Total work-in-process	17,071	19,042
Total finished goods	5,038	5,932
Total inventories, net	27,363	30,712
Security Products
Inventory [Line Items]
Total raw materials	3,658	3,569
Total work-in-process	12,213	13,879
Total finished goods	2,825	3,175
Marine Components
Inventory [Line Items]
Total raw materials	1,596	2,169
Total work-in-process	4,858	5,163
Total finished goods	$ 2,213	$ 2,757