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Unit-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2020
Share-based Payment Arrangement [Abstract]  
Phantom Units Activity
The following is a summary of phantom unit award activities of the Partnership’s common units for the nine months ended September 30, 2020:
Phantom Units
Number of Units (in units)Weighted Average Grant Date Fair Value per Unit (in dollars)
Outstanding at December 31, 201915,227 $16.64 
Granted16,038 14.03 
Vested(15,227)16.64 
Outstanding at September 30, 202016,038 $14.03