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14. QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)
12 Months Ended
Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Financial Information [Text Block]
14. QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)

The following is a summary of the unaudited quarterly results of operations for the years ended December 31, 2014 and 2013:

    1st Quarter   2nd Quarter   3rd Quarter   4th Quarter   Total Year
2014                                        
Net sales   $ 65,783,284     $ 68,822,520     $ 72,729,678     $ 78,906,687     $ 286,242,169  
Gross margin     21,853,149       22,585,662       24,273,792       27,648,122       96,360,725  
Net income     723,788       1,511,461       3,138,507       4,471,542       9,845,298  
Dividends paid     753,981       754,321       754,665       755,012       3,017,979  
                                         
Net income per common share:                                
Basic   $ 0.10     $ 0.20     $ 0.42     $ 0.59     $ 1.30  
Diluted   $ 0.10     $ 0.20     $ 0.42     $ 0.59     $ 1.30  

    1st Quarter   2nd Quarter   3rd Quarter   4th Quarter   Total Year
2013                                        
Net sales   $ 53,715,476     $ 59,419,751     $ 70,176,216     $ 61,559,288     $ 244,870,731  
Gross margin     18,670,770       20,310,487       22,739,670       21,821,524       83,542,451  
Net income     892,096       1,772,280       2,934,196       1,774,184       7,372,756  
Dividends paid     -       750,357       752,933       751,645       2,254,935  
                                         
Net income per common share:                                
Basic   $ 0.12     $ 0.24     $ 0.39     $ 0.24     $ 0.98  
Diluted   $ 0.12     $ 0.24     $ 0.39     $ 0.24     $ 0.98  

(a) Includes after-tax acquisition related expenses of $0.1 million and $0.7 million for the third and fourth quarter, respectively, as discussed in Note 15.