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SEGMENT AND SIGNIFICANT CUSTOMER INFORMATION
9 Months Ended
Sep. 30, 2011
Segment Reporting [Abstract] 
Segment Reporting Disclosure [Text Block]
12.                 
SEGMENT AND SIGNIFICANT CUSTOMER INFORMATION
Pursuant to Codification Topic 280, Segment Reporting , we operate in one reportable business segment, that being the development, acquisition, manufacture and sale of products that improve the health and productivity of cows for the dairy and beef industries.  Almost all of our internally funded product development expenses are in support of such products.  Our primary customers for the majority of our product sales (86% and 83% for the three-month periods ended September 30, 2011 and 2010, respectively, and 84% and 82% for the nine-month periods ended September 30, 2011 and 2010, respectively) are in the U.S. dairy and beef industries.  Product sales to international customers, who are also in the dairy and beef industries, aggregated 14% and 17% of our total product sales for the three-month periods ended September 30, 2011 and 2010, respectively, and 16% and 14% of our total product sales for the nine-month periods ended September 30, 2011 and 2010, respectively.  Sales to significant distributors that amounted to 10% or more of total product sales are detailed in the following table:

   
Three-Month Periods
Ended September 30,
   
Nine-Month Periods 
Ended September 30,
 
   
2011
   
2010
   
2011
   
2010
 
Animal Health International, Inc. [ 1 ]
    38 %     35 %     40 %     36 %
MWI Veterinary Supply Company [ 2 ]
    15 %     14 %     14 %     13 %

[ 1 ] Assumes that the June 2011 acquisition of Animal Health International by Lextron had occurred as of the beginning of
the periods being reported.
[ 2 ] Assumes that the March 2011 acquisition of Nelson Laboratories by MWI had occurred as of the beginning of the periods being reported .

Accounts receivable due from significant distributors that amounted to 10% or more of total trade accounts receivable are detailed in the following table:

   
As of September 
30, 2011
   
As of December 
31, 2010
 
Animal Health International, Inc. [ 1 ]
    24 %     35 %
MWI Veterinary Supply Company [ 2 ]
    21 %     12 %
IBA, Inc.
    11 %     *  
Robert J. Matthews Company
    *       15 %
Stearns Veterinary Outlet, Inc.
    *       10 %

[ 1 ] Assumes that the June 2011 acquisition of Animal Health International by Lextron had occurred as of the dates being reported.
[ 2 ] Assumes that the March 2011 acquisition of Nelson Laboratories by MWI had occurred as of the dates being reported .
* Amount is less than 10%.