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Legal Proceedings
9 Months Ended
Sep. 30, 2017
Legal Proceedings [Abstract]  
Legal Proceedings [Text Block]
Note 9 - Legal Proceedings
 
In addition to what was disclosed in our Annual Report on Form 10-K for the year ended December 31, 2016, we received a notice from the Texas Comptroller that we would have a sales and use tax audit for the time period of July 1, 2013 through December 31, 2016. We expect the process to take all of 2017 and at this time, we are unable to determine if the company has any sales tax exposure, therefore, we will not reserve for the sales and use tax audit.