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QUARTERLY FINANCIAL INFORMATION (UNAUDITED)
 12 Months Ended
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]  
QUARTERLY FINANCIAL INFORMATION (UNAUDITED)
11. QUARTERLY FINANCIAL INFORMATION (UNAUDITED)

 

The following is a summary of the unaudited quarterly financial information for the years ended December 31, 2017 and 2016:

 

    Net Sales     Operating
Income		     Net
Income		     Basic 
Income
Per Share		     Diluted 
Income Per
Share		     Cash 
Dividends
Declared
Per Share		  
                                     
2017                                    
First Quarter   $ 148,933     $ 6,351     $ 3,839     $ 0.34     $ 0.34     $ 0.18  
Second Quarter     153,089       8,537       5,425       0.48       0.48       0.18  
Third Quarter     153,363       7,070       4,456       0.39       0.39       0.18  
Fourth Quarter     159,716       9,582       9,296       0.81       0.81       0.18  
Total   $ 615,101     $ 31,540     $ 23,016     $ 2.02     $ 2.02     $ 0.72  
                                                 
2016                                                
First Quarter   $ 148,815     $ 4,960     $ 3,360     $ 0.30     $ 0.30     $ 0.17  
Second Quarter     156,113       10,719       6,587       0.58       0.58       0.17  
Third Quarter     147,597       8,621       5,522       0.49       0.49       0.17  
Fourth Quarter     148,594       7,661       4,453       0.39       0.38       0.17  
Total   $ 601,119     $ 31,961     $ 19,922     $ 1.76     $ 1.75     $ 0.68