6. Intangible assets (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure Text Block [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	December 31,
	2014				2013
(In thousands)	Gross Amount		Accumulated Amortization		Gross Amount		Accumulated Amortization
Purchased technology	$	1,604	$	(1,172)	$	1,604	$	(924)
Customer relationships		1,300		(729)		1,300		(513)
Trademark		480		(162)		480		(113)
Covenant not to compete		146		(146)		146		(146)
Patents		57		(37)		57		(35)
Other		80		(80)		80		(80)
Total	$	3,667	$	(2,326)	$	3,667	$	(1,811)