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Stockholders' Equity
12 Months Ended
Dec. 31, 2017
Stockholders' Equity Attributable to Parent [Abstract]  
Stockholders' Equity
Stockholders' Equity

Preferred Stock

We have a total of 5.0 million authorized preferred shares with rights and preferences as designated by the Board of Directors.  As of December 31, 2017 and 2016, there were no issued or outstanding preferred shares.