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Equity-based Awards (Tables)
 12 Months Ended
Dec. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Summary of Information Regarding Restricted Common Unit Awards

The following table summarizes information regarding restricted common unit awards for the periods presented:

 

 

 

 

 

Weighted-

 

 

 

 

 

 

Average Grant

 

 

Number of

 

 

Date Fair Value

 

 

Units

 

 

per Unit (1)

 

Restricted common units outstanding at December 31, 2013

 

706,927

 

 

$

18.62

 

Granted (2)

 

684,954

 

 

$

22.39

 

Forfeited

 

(38,294

)

 

$

20.54

 

Vested

 

(260,067

)

 

$

18.56

 

Restricted common units outstanding at December 31, 2014

 

1,093,520

 

 

$

20.93

 

Granted (3)

 

827,704

 

 

$

14.90

 

Forfeited

 

(69,059

)

 

$

18.35

 

Vested

 

(483,627

)

 

$

20.37

 

Restricted common units outstanding at December 31, 2015

 

1,368,538

 

 

$

17.61

 

Granted (4)

 

50,000

 

 

$

2.41

 

Forfeited

 

(27,537

)

 

$

16.99

 

Vested

 

(958,841

)

 

$

18.01

 

Restricted common units outstanding at December 31, 2016

 

432,160

 

 

$

15.00

 

 

 

(1)

Determined by dividing the aggregate grant date fair value of awards by the number of awards issued.

 

(2)

The aggregate grant date fair value of restricted common unit awards issued in 2014 was $15.3 million based on grant date market prices ranging from of $21.99 to $23.40 per unit.

 

(3)

The aggregate grant date fair value of restricted common unit awards issued in 2015 was $12.3 million based on grant date market prices ranging from of $6.20 to $15.45 per unit.

 

(4)

The aggregate grant date fair value of restricted common unit awards issued in 2016 was $0.1 million based on grant date market price of $2.41 per unit.

Summary of Information Regarding Phantom Unit Awards

The following table summarizes information regarding phantom unit awards granted under the LTIP:

 

Number of

 

 

Units

 

Phantom units outstanding at December 31, 2015

 

—

 

Granted

 

6,169,018

 

Forfeited

 

(188,325

)

Phantom units outstanding at December 31, 2016

 

5,980,693

 

 
Summary of Amount of Compensation Expense Recognized

The following table summarizes the amount of recognized compensation expense associated with these awards that are reflected in the accompanying statements of operations for the periods presented (in thousands):

 

For the Year Ended

 

 

December 31,

 

 

2016

 

 

2015

 

 

2014

 

Equity classified awards

 

 

 

 

 

 

 

 

 

 

 

Restricted common units

$

7,206

 

 

$

10,809

 

 

$

7,874

 

Liability classified awards

 

 

 

 

 

 

 

 

 

 

 

Phantom units

 

322

 

 

 

—

 

 

 

—

 

 

$

7,528

 

 

$

10,809

 

 

$

7,874