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1. Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Accounting Policies [Abstract]        
Warrants outstanding 2,000,000   2,000,000  
Stock based compensation costs $ 1,400 $ 1,400 $ 4,004 $ 3,609
Unrecognized stock-based compensation costs 11,500   $ 11,500  
Unrecognized stock-based compensation costs amortization period     2 years 3 months 18 days  
Aggregate intrinsic value outstanding 10,800   $ 10,800  
Aggregate intrinsic value exercisable $ 9,600   $ 9,600  
Options Exercised     127,000 1,033,000
Total intrinsic value of options exercised     $ 379 $ 7,100
Shares available for future grants 3,600,000   3,600,000  
Repurchase of common stock, shares repurchased     2,000,000 545,521
Repurchase of common stock average share price     $ 4.05 $ 6.21