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Note 13 - Segment and Related Information (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   

Three Months Ended June 30, 2021

 
   

Commercial

Air Handling

   

Industrial

And

Transportation

Products

   

Corporate

and Other

   

Consolidated

 

Sales

  $ 9,972,545     $ 16,477,340     $ -     $ 26,449,885  

Gross Profit

    2,030,038       3,750,252       -       5,780,290  

Operating Income

    845,092       1,342,966       (68,261

)

    2,119,797  

Pretax Income

    845,092       1,121,507       (372,142

)

    1,594,457  

Net Income

    633,818       893,184       (279,697

)

    1,247,305  
   

Three Months Ended June 30, 2020 (1)

 
   

Commercial

Air Handling

   

Industrial

And

Transportation

Products

   

Corporate

and Other

   

Consolidated

 

Sales

  $ 11,848,816     $ 6,727,772     $ -     $ 18,576,588  

Gross Profit

    2,893,541       605,498       -       3,499,039  

Operating Income

    1,565,482       (872,867 )     (162,095 )     530,520  

Pretax Income

    1,565,482       (1,154,315 )     (103,542 )     307,625  

Net Income

    1,174,113       (870,177 )     (75,099 )     228,837  
   

Six Months Ended June 30, 2021

 
   

Commercial

Air Handling

   

Industrial

And

Transportation

Products

   

Corporate

and Other

   

Consolidated

 

Sales

  $ 18,737,644     $ 31,706,245     $ -     $ 50,443,889  

Gross Profit

    4,260,858       7,522,353       -       11,783,211  

Operating Income

    1,890,721       3,094,411       (539,875

)

    4,445,257  

Pretax Income

    1,890,721       2,693,643       679,052       5,263,416  

Net Income

    1,418,040       2,099,368       873,314       4,390,722  
   

Six Months Ended June 30, 2020 (1)

 
   

Commercial

Air Handling

   

Industrial

And

Transportation

Products

   

Corporate

and Other

   

Consolidated

 

Sales

  $ 23,302,590     $ 20,555,572     $ -     $ 43,858,162  

Gross Profit

    5,941,342       3,765,841       -       9,707,182  

Operating Income

    3,185,251       541,737       (58,319

)

    3,668,669  

Pretax Income

    3,160,286       (33,088

)

    (50,206

)

    3,076,992  

Net Income

    2,370,215       (30,679

)

    (35,129

)

    2,304,407