Revenue recognition (Tables)

9 Months Ended

Sep. 30, 2023

Revenue recognition

Schedule of Disaggregates Net Sales By Reporting Unit

	Three months ended				Nine months ended
	September 30,				September 30,
	2022		2023		2022		2023
	(In thousands)
Net sales:
Security Products	$	28,493	$	31,376	$	86,911	$	84,390
Marine Components		14,371		8,979		39,678		33,732
Total	$	42,864	$	40,355	$	126,589	$	118,122