7. Accrued liabilities (Tables)

12 Months Ended

Dec. 31, 2014

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

	December 31,
(In thousands)	2014		2013
Salaries and compensation related	$	1,852	$	1,447
Warranty		207		282
Professional and consulting		959		139
Other		302		347
	$	3,320	$	2,215