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Note 2 - Income (Loss) Per Share (Tables)
3 Months Ended
Mar. 31, 2019
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
(in thousands except per share data)
               
   
2019
   
2018
 
Numerator:
               
Net income
  $
4,433
    $
4,417
 
Denominator:
               
Denominator for basic income per share – weighted-average shares
   
18,381
     
18,331
 
Effect of dilutive securities:
               
Equivalent shares issuable upon conversion of unvested restricted shares
   
152
     
75
 
Denominator for diluted income per share adjusted weighted-average shares and assumed conversions
   
18,533
     
18,406
 
                 
Net income per share:
               
Basic and diluted income per share
  $
0.24
    $
0.24