XML 29 R18.htm IDEA: XBRL DOCUMENT v3.10.0.1
Note 3 - Income Tax (Tables)
9 Months Ended
Sep. 30, 2018
Notes Tables  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   
Three Months Ended
   
Nine
Months Ended
 
   
September
30,
   
September
30,
 
   
2018
   
2017
   
2018
   
2017
 
Effective tax rate
   
144.1
%    
24.8
%    
34.7
%    
30.8
%