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Employee Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]  
Summary of Service-Based And Performance-Based Awards
A summary of our phantom unit activity for our service-based and performance-based awards is set forth below:
 
 
Service-Based Awards
 
Performance-Based Awards
 
Number of
Phantom
Units
 
Average
Grant
Date Fair
Value
 
Total
Value
(in thousands)
 
Number of
Phantom
Units
 
Average
Grant
Date Fair
Value
 
Total
Value
(in thousands)
Unvested at December 31, 2015
132,676

 
$
48.09

 
$
6,380

 
344,208

 
$
47.78

 
$
16,446

Granted
84,997

 
$
31.67

 
2,692

 
254,587

 
$
30.38

 
7,734

Forfeited
(3,117
)
 
$
45.88

 
(143
)
 
(4,677
)
 
$
45.89

 
(215
)
Settled
(33,326
)
 
$
47.19

 
(1,573
)
 
(110,886
)
 
$
46.97

 
(5,208
)
Unvested at December 31, 2016
181,230

 
$
40.59

 
$
7,356

 
483,232

 
$
38.82

 
$
18,757
Expense Related To Equity-Based Compensation Plans
Equity-based compensation expense from our continuing operations during the three years ended December 31, 2016 was as follows:
 
 
 
Expense Related to Equity-Based Compensation Plans
Consolidated Statement of Operations
 
2016
 
2015
 
2014
Supply and logistics operating costs
 
$
1,688

 
$
1,185

 
$
433

Marine transportation operating costs
 
1,089

 
851

 
626

Refinery services operating costs
 
547

 
227

 
(62
)
Offshore pipeline operating costs
 
681

 
94

 
—

General and administrative expenses
 
4,575

 
4,565

 
5,824

Total
 
$
8,580

 
$
6,922

 
$
6,821