Business Segment Information (Tables)

9 Months Ended

Sep. 30, 2015

Segment Reporting [Abstract]

Schedule of Business Segment Information

	Three months ended						Nine months ended
	September 30,						September 30,
	2014			2015			2014			2015
	(In thousands)						(In thousands)
Net sales:
Security Products	$	23,237		$	23,115		$	69,246		$	72,831
Marine Components		3,236			3,390			9,856			10,483
Total net sales	$	26,473		$	26,505		$	79,102		$	83,314
Operating income (loss):
Security Products	$	4,694		$	4,455		$	14,235		$	14,656
Marine Components		223			422			729			1,288
Corporate operating expenses		(1,485	)		(1,443	)		(4,332	)		(4,503	)
Total operating income		3,432			3,434			10,632			11,441
Interest income		7			16			19			32
Income before taxes	$	3,439		$	3,450		$	10,651		$	11,473