16. Geographic area information (Tables)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	Year Ended December 31,
(In thousands)	2014		2013		2012
Net sales:
United States	$	38,567	$	46,377	$	49,932
International		14,541		13,764		18,454
Total	$	53,108	$	60,141	$	68,386
Fixed assets, net:
United States	$	1,490	$	1,583	$	1,941
International		948		1,149		1,361
Total	$	2,438	$	2,732	$	3,302