XML 32 R21.htm IDEA: XBRL DOCUMENT v3.8.0.1
Note 3 - Supplemental Cash Flow Information (Tables)
 3 Months Ended
Mar. 31, 2018
Notes Tables  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
    Three Months Ended
March 31,		  
    2018   2017  
    (in thousands)  
Cash paid for:                  
Interest   $
114
     $
14
    
Income taxes, net of refunds    
-
      
79
    
                   
Non-cash investing and financing activities:                  
Capital additions accrued but not yet paid   $
197
     $
392