XML 66 R53.htm IDEA: XBRL DOCUMENT v3.10.0.1
10. Stockholders' Equity (Details) - shares
 6 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Dec. 31, 2016
Class of Warrant or Right, Outstanding 13,725,123 9,295,834 10,737,500
Warrants issued in private placement 4,429,289 7,558,334  
Warrants expired   (9,000,000)  
Private placement      
Private placement units sold 8,858,577    
Private placement units sold, net proceeds 1,107,571