11. Share-Based Compensation (Details-Option activity) - Employee Stock Option [Member] $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($) $ / shares shares
Number of Shares
Outstanding, beginning balance | shares	1,423,000
Exercised | shares	(68,000)
Cancelled/Forfeited | shares	(26,000)
Outstanding, ending balance | shares	1,329,000
Exercisable, ending balance | shares	775,000
Vested and expected to vest | shares	1,283,000
Weighted Average Exercise Price
Outstanding, beginning balance	$ 8.96
Exercised	7.13
Cancelled/Forfeited	9.39
Outstanding, ending balance	9.04
Exercisable, ending balance	8.52
Vested and expected to vest	9.00
Weighted average share price on date of exercise	15.99
Weighted Average Fair Value
Outstanding, beginning balance	4.48
Exercised	2.75
Cancelled/Forfeited	5.01
Outstanding, ending balance	4.55
Exercisable, ending balance	4.05
Vested and expected to vest	$ 4.53
Weighted Average Remaining Contractual Life
Outstanding, ending balance	7 years 4 months 27 days
Exercisable, ending balance	7 years 1 month 3 days
Vested and expected to vest	7 years 4 months 20 days
Aggregate Intrinsic Value
Aggregate intrinsic value, outstanding | $	$ 3,486
Exercised | $	$ 604
Cancelled/Forfeited	$ 135
Aggregate intrinsic value, outstanding | $	$ 12,938
Exercisable, ending balance | $	7,954
Vested and expected to vest | $	$ 12,537