1. Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accounting Policies [Abstract]
Stock based compensation costs	$ 1,100	$ 700	$ 2,176	$ 1,459
Unrecognized stock-based compensation costs	16,700		$ 16,700
Unrecognized stock-based compensation costs amortization period			3 years 7 days
Aggregate intrinsic value outstanding	22,900		$ 22,900
Aggregate intrinsic value exercisable	$ 19,500		$ 19,500
Options Exercised			971	978
Total intrinsic value of options exercised			$ 5,400	$ 6,700
Shares available for future grants	5,400		5,400
Repurchase of common stock, shares repurchased			361,046
Repurchase of common stock average share price			$ 6.39