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Note 7 - Earnings (Loss) Per Share ("EPS") (Tables)
3 Months Ended
Mar. 31, 2018
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
    Three Months Ended March 31,
    2018   2017
Shares used in the calculation of basic earnings (loss) per share    
14,679
     
14,576
 
Effect of dilutive securities:                
Stock options, SARs, RSAs and RSUs    
-
     
467
 
Diluted shares used in the calculation of earnings (loss) per share    
14,679
     
15,043