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Accounts Receivable Discount Programs (Tables)
 3 Months Ended
Jun. 30, 2017
Accounts Receivable Discount Programs [Abstract]  
Schedule of accounts receivable discount programs
The following is a summary of the Company’s accounts receivable discount programs:

  
Three Months Ended
June 30,
 
  
2017
  
2016
 
Receivables discounted
 
$
86,520,000
  
$
80,649,000
 
Weighted average days
  
342
   
341
 
Annualized weighted average discount rate
  
3.1
%
  
2.7
%
Amount of discount as interest expense
 
$
2,522,000
  
$
2,068,000