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1. Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Accounting Policies [Abstract]        
Warrants outstanding 2,000,000   2,000,000  
Stock based compensation costs $ 1,200 $ 1,100 $ 2,595 $ 2,176
Unrecognized stock-based compensation costs 13,200   $ 13,200  
Unrecognized stock-based compensation costs amortization period     2 years 6 months  
Aggregate intrinsic value outstanding 10,800   $ 10,800  
Aggregate intrinsic value exercisable $ 9,600   $ 9,600  
Options Exercised     29,200 978,000
Total intrinsic value of options exercised     $ 91 $ 5,400
Shares available for future grants 3,500,000   3,500,000  
Repurchase of common stock, shares repurchased     1,600,000 361,046
Repurchase of common stock average share price     $ 4.06 $ 6.39