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Earnings Per Unit
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Earnings Per Unit EARNINGS PER UNIT
The Partnership applies the two-class method for purposes of calculating earnings per unit (“EPU”). The holders of the Partnership’s restricted common units have all the rights of a unitholder, including non-forfeitable distribution rights. As participating securities, the restricted common units are included in the calculation of basic earnings per unit. For the periods presented, the amount of earnings allocated to these participating units was not material.
Net income (loss) attributable to the Partnership is allocated to the Partnership's general partner and the common and subordinated unitholders in proportion to their pro rata ownership after giving effect to distributions, if any, declared during the period.
The Partnership assesses the Series A redeemable preferred units and the Series B cumulative convertible preferred units on an as-converted basis for the purpose of calculating diluted EPU. The Partnership’s restricted performance unit awards are contingently issuable units that are considered in the calculation of diluted EPU. The Partnership assesses the number of units that would be issuable, if any, under the terms of the arrangement if the end of the reporting period were the end of the contingency period.
The following table sets forth the computation of basic and diluted earnings per unit:
 For the Year Ended December 31,
 201920182017
 (in thousands, except per unit  amounts)
NET INCOME (LOSS)$214,368  $295,560  $157,153  
Net (income) loss attributable to noncontrolling interests—  (24) 34  
Distributions on Series A redeemable preferred units—  (25) (3,117) 
Distributions on Series B cumulative convertible preferred units (21,000) (21,000) (1,925) 
NET INCOME (LOSS) ATTRIBUTABLE TO THE GENERAL PARTNER AND COMMON AND SUBORDINATED UNITS$193,368  $274,511  $152,145  
ALLOCATION OF NET INCOME (LOSS):   
General partner interest$—  $—  $—  
Common units169,375  154,662  98,389  
Subordinated units23,993  119,849  53,756  
 $193,368  $274,511  $152,145  
Weighted average common units outstanding:
Weighted average common units outstanding (basic)168,230  106,064  97,400  
Effect of dilutive securities146  15,200  —  
Weighted average common units outstanding (diluted)168,376  121,264  97,400  
Weighted average subordinated units outstanding:
Weighted average subordinated units outstanding (basic)37,740  96,099  95,149  
Effect of dilutive securities—  247  —  
Weighted average subordinated units outstanding (diluted)37,740  96,346  95,149  
NET INCOME (LOSS) ATTRIBUTABLE TO LIMITED PARTNERS PER COMMON AND SUBORDINATED UNIT:     
Per common unit (basic)$1.01  $1.46  $1.01  
Per subordinated unit (basic)0.64  1.25  0.56  
Per common unit (diluted)1
1.01  1.45  1.01  
Per subordinated unit (diluted)2
0.64  1.25  0.56  
1 For the year ended December 31, 2018, diluted net income (loss) attributable to common units includes distributions on Series B cumulative convertible preferred units of $21.0 million.
2 For the year ended December 31, 2018, diluted net income (loss) attributable to subordinated units includes distributions on Series A redeemable preferred units of $0.3 million.
The following units of potentially dilutive securities were excluded from the computation of diluted weighted average units outstanding because their inclusion would be anti-dilutive:
For the Year Ended December 31,
201920182017
(in thousands)
Potentially dilutive securities (common units):
Series A redeemable preferred units on an as-converted basis—  189  996  
Series B cumulative convertible preferred units on an as-converted basis14,968  —  1,612  
14,968  189  2,608  
Potentially dilutive securities (subordinated units):
Series A redeemable preferred units on an as-converted basis—  —  1,304