Inventories, Net (Tables)

6 Months Ended

Jun. 30, 2020

Inventory Disclosure [Abstract]

Inventories, Net

	December 31,		June 30,
	2019		2020
	(In thousands)
Raw materials:
Security Products	$	2,134	$	2,546
Marine Components		807		815
Total raw materials		2,941		3,361
Work-in-process:
Security Products		9,138		10,744
Marine Components		2,633		2,905
Total work-in-process		11,771		13,649
Finished goods:
Security Products		2,582		3,385
Marine Components		1,054		1,423
Total finished goods		3,636		4,808
Total inventories, net	$	18,348	$	21,818