Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2021

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,
	2020		2021
	(In thousands)
Net sales:
Security Products	$	25,469	$	25,885
Marine Components		6,842		10,039
Total	$	32,311	$	35,924