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Inventories, Net - Inventories, Net (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Inventory [Line Items]
Total raw materials	$ 3,318	$ 3,393
Total work-in-process	10,729	10,271
Total finished goods	2,777	3,199
Total inventories, net	16,824us-gaap_InventoryNet	16,863us-gaap_InventoryNet
Security Products
Inventory [Line Items]
Total raw materials	2,789	2,805
Total work-in-process	9,351	8,889
Total finished goods	1,785	2,331
Marine Components
Inventory [Line Items]
Total raw materials	529	588
Total work-in-process	1,378	1,382
Total finished goods	$ 992	$ 868

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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