Revenue recognition (Tables)

6 Months Ended

Jun. 30, 2022

Revenue recognition

Schedule of Disaggregates Net Sales By Reporting Unit

	Three months ended				Six months ended
	June 30,				June 30,
	2021		2022		2021		2022
	(In thousands)
Net sales:
Security Products	$	27,587	$	28,837	$	53,472	$	58,418
Marine Components		8,666		12,838		18,705		25,307
Total	$	36,253	$	41,675	$	72,177	$	83,725