Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2019

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.

	Three months ended
	March 31,
	2018		2019
	(In thousands)
Net sales:
Security Products	$	24,056	$	24,704
Marine Components		4,357		6,472
Total net sales	$	28,413	$	31,176