Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2018

Revenue From Contract With Customer [Abstract]

Schedule of Disaggregates Net Sales By Reporting Unit

The following table disaggregates our net sales by reporting unit, which are the categories that depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors (as required by ASC 606).

	Three months ended				Six months ended
	June 30,				June 30,
	2017		2018		2017		2018
	(In thousands)
Net Sales:
Security Products	$	26,039	$	27,248	$	52,049	$	51,304
Marine Components		3,963		5,137		7,901		9,494
Total	$	30,002	$	32,385	$	59,950	$	60,798