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Related Party Transactions (Tables)
 9 Months Ended
Sep. 30, 2019
Related Party Transactions [Abstract]  
Related Party Transactions
During the three months and nine months ended September 30, 2019 and 2018, we generated the following transactions with related parties (in thousands):
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2019
 
2018
 
2019
 
2018
NGL Energy
 
 
 
 
 
 
 
   Revenues
$
—

 
$
6,835

 
$
3,058

 
$
14,013

   Purchases
$
191

 
$
128

 
$
595

 
$
508

 
 
 
 
 
 
 
 
White Cliffs
 
 
 
 
 
 
 
   Storage revenues
$
1,125

 
$
1,088

 
$
3,413

 
$
3,264

   Transportation fees
$
2,521

 
$
3,135

 
$
8,253

 
$
9,455

   Management fees
$
195

 
$
140

 
$
474

 
$
406

   Crude oil purchases
$
—

 
$
2,834

 
$
—

 
$
3,729