11. Share-Based Compensation (Details-Share based compensation expense) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Employee stock-based compensation expense	$ 517	$ 487	$ 1,567	$ 1,494
Employee Stock Option [Member]
Employee stock-based compensation expense	388	405	1,152	1,238
Restricted Stock Units/Awards
Employee stock-based compensation expense	129	82	415	240
Warrant [Member]
Employee stock-based compensation expense	0	0	0	16
Cost of sales [Member]
Employee stock-based compensation expense	17	7	52	60
Research and development [Member]
Employee stock-based compensation expense	55	28	165	84
Sales and marketing [Member]
Employee stock-based compensation expense	58	24	162	72
General and administrative [Member]
Employee stock-based compensation expense	$ 387	$ 428	$ 1,188	$ 1,278