Business Segment Information (Tables)

6 Months Ended

Jun. 30, 2016

Segment Reporting [Abstract]

Schedule of Business Segment Information

	Three months ended						Six months ended
	June 30,						June 30,
	2015			2016			2015			2016
	(In thousands)						(In thousands)
Net sales:
Security Products	$	25,059		$	23,195		$	49,716		$	46,609
Marine Components		3,859			3,912			7,092			7,573
Total net sales	$	28,918		$	27,107		$	56,808		$	54,182
Operating income (loss):
Security Products	$	5,254		$	4,785		$	10,200		$	9,256
Marine Components		606			555			866			889
Corporate operating expenses		(1,554	)		(1,623	)		(3,059	)		(3,075	)
Total operating income		4,306			3,717			8,007			7,070
Interest income		8			41			16			73
Income before taxes	$	4,314		$	3,758		$	8,023		$	7,143