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Accounts Receivable and Allowance for Doubtful Accounts
12 Months Ended
Dec. 31, 2012
Accounts Receivable and Allowance for Doubtful Accounts [Abstract]  
Accounts Receivable and Allowance for Doubtful Accounts [Text Block]

Note 5 – Accounts Receivable and Allowance for Doubtful Accounts

At December 31, 2012 and December 31, 2011, the Company had gross trade accounts receivable totaling $160,596 and $155,245 with trade accounts receivable greater than 90 days past due of $9,401 and $6,112, respectively. The following are changes in the allowance for doubtful accounts during the years ended December 31, 2012, December 31, 2011 and December 31, 2010:

             Exchange    
       Charged     Rate    
    Balance at  to Costs  Write-Offs  Changes  Balance  
    Beginning  and  Charged to  And Other  at End 
    of Period  Expenses  Allowance  Adjustments  of Period 
 ALLOWANCE FOR DOUBTFUL ACCOUNTS               
 Year ended December 31, 2012$4,569 $2,072 $(737) $495 $6,399 
 Year ended December 31, 2011$4,278 $855 $(607) $43 $4,569 
 Year ended December 31, 2010$4,002 $860 $(538) $(46) $4,278 

Included in exchange rate changes and other adjustments are allowance for doubtful accounts of $416, $146 and $0 acquired in 2012, 2011 and 2010 business acquisitions.