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Goodwill
 6 Months Ended
Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill Goodwill

The changes in the carrying amount of goodwill by reportable segment for the six months ended June 30, 2019 are as follows:
(in thousands)
Trade
 
Plant Nutrient
 
Rail
 
Total
Balance as of January 1, 2019
$
1,171

 
$
686

 
$
4,167

 
$
6,024

Acquisitions
129,848

 
—

 
—

 
129,848

Balance as of June 30, 2019
$
131,019

 
$
686

 
$
4,167

 
$
135,872



Acquisitions represent the LTG acquisition's preliminary goodwill allocation.