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Goodwill (Tables)
 6 Months Ended
Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of goodwill
Additional details of these transactions can be found in NOTE 2. ACQUISITIONS AND DIVESTITURES, included within the Notes to Consolidated Condensed Financial Statements of this Form 10-Q.

 
2015
 
2014
Balance, January 1
$
202,724

 
$
188,948

Goodwill acquired
11,126

 
 
Goodwill reduction
(8,474
)
 
 
Balance, June 30
$
205,376

 
$
188,948