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Note 15 - Unaudited Quarterly Results (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Quarterly Financial Information [Table Text Block]
  

First Quarter

  

Second Quarter

  

Third Quarter

  

Fourth Quarter

 
   (Dollars in thousands except per share data)

2020:

                

Net sales

  70,098   79,980   84,190   84,522 

Income/(loss) from operations

  (2,886)  231   3,760   (3,103)

Net Income/(loss)

  (3,590)  153   3,547   (3,298)

Net Income/(loss) attributable to common stockholders

  (3,590)  153   3,547   (3,298)
Basic earnings/(loss) per common share  (0.10)  0.00   0.09   (0.08)

Diluted earnings/(loss) per common share

  (0.10)  0.00   0.09   (0.08)

2019:

                

Net sales

  54,792   60,052   65,266   65,752 

Income/(loss) from operations

  (3,317)  (5,346)  3,535   4,876 

Net Income/(loss)

  (3,422)  (5,661)  3,067   4,633 

Net Income/(loss) attributable to common stockholders

  (3,422)  (5,661)  3,067   4,633 

Basic earnings/(loss) per common share

  (0.10)  (0.16)  0.09   0.13 

Diluted earnings/(loss) per common share

  (0.10)  (0.16)  0.08   0.12 

2018:

                

Net sales

  43,170   47,625   50,800   51,643 

Income/(loss) from operations

  (3,410)  (3,410)  44   1,890 

Net Income/(loss)

  (3,521)  (3,501)  (97)  1,757 

Net Income/(loss) attributable to common stockholders

  (3,521)  (3,501)  (97)  1,757 

Basic earnings/(loss) per common share

  (0.10)  (0.10)  (0.00)  0.05 

Diluted earnings/(loss) per common share

  (0.10)  (0.10)  (0.00)  0.05