Geographic Information (Tables)

12 Months Ended

Dec. 31, 2014

Segments Geographical Areas [Abstract]

Geographical Information Attributable to Net Sales

	Years ended December 31,
	2012		2013		2014
	(In thousands)
Net sales - point of destination:
United States	$	78,268	$	87,307	$	98,994
Canada		2,194		2,195		1,927
Other		2,734		2,543		2,925
Total	$	83,196	$	92,045	$	103,846