1. Summary of Significant Accounting Policies (Details Narrative) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Summary Of Significant Accounting Policies Details Narrative
Unrecognized stock-based compensation costs	$ 13,500
Unrecognized stock-based compensation costs amortization period	3 years 7 months 6 days
Aggregate intrinsic value outstanding	32,500
Aggregate intrinsic value exercisable	$ 23,300
Options exercised	1,116	356
Shares available for future grants	4,000
Common stock repurchased, shares	323,674	320,154