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Long-Term Incentive Compensation (Tables)
 6 Months Ended
Jun. 30, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Stock Option Activity
The following table presents a summary of activity for stock options, service-based restricted stock awards and performance-based stock unit awards for the six months ended June 30, 2020 (in thousands):
Stock OptionsService-based Restricted StockPerformance-based Stock Units
Outstanding – December 31, 2019636  1,064  248  
Granted—  684  181  
Vested/Exercised—  (529) (125) 
Forfeited(50) (55) —  
Outstanding – June 30, 2020586  1,164  304  
Weighted average grant date fair value (2020 awards)$—  $10.03  $11.15