1. Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accounting Policies [Abstract]
Warrants outstanding	2,000,000
Stock based compensation costs	$ 1,394	$ 1,249
Unrecognized stock-based compensation costs	$ 8,600
Unrecognized stock-based compensation costs amortization period	1 year 10 months 24 days
Aggregate intrinsic value outstanding	$ 14,500
Aggregate intrinsic value exercisable	$ 11,700
Options Exercised	279,000
Total intrinsic value of options exercised	$ 913	$ 51
Shares available for future grants	3,700,000
Repurchase of common stock, shares repurchased	703,745	0
Repurchase of common stock average share price	$ 4.19