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Quarterly Results of Operations (Unaudited)
 12 Months Ended
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Results of Operations (Unaudited)

15.       Quarterly Results of Operations (Unaudited)

 

The following is a tabulation of the unaudited quarterly results of operations for the two years ended December 31, 2017:

 

   Three Months Ended 
   4/1/17   7/1/17   9/30/17   12/31/17 
Net Sales  $167,355   $131,854   $104,817   $118,230 
Gross profit   55,753    34,946    30,214    33,094 
Net income   22,224    10,199    9,370    10,350 
Basic earnings per share   1.22    0.58    0.53    0.59 
Diluted earnings per share  $1.21   $0.57   $0.52   $0.59 

 

 

   Three Months Ended 
   4/2/16   7/2/16   10/1/16   12/31/16 
Net Sales  $173,109   $167,944   $161,427   $161,848 
Gross profit   59,113    56,694    50,251    53,496 
Net income   23,278    23,515    19,850    20,829 
Basic earnings per share   1.23    1.24    1.05    1.11 
Diluted earnings per share  $1.21   $1.22   $1.03   $1.10