XML 54 R35.htm IDEA: XBRL DOCUMENT v3.10.0.1
Unit-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-based Compensation, Activity Restricted unit activity for the year ended December 31, 2018 was as follows:
 
Number of Units
 
Weighted Average Award Date Fair Value
Awarded and Unvested Units at December 31, 2017
34,704

 
$
45.10

Awarded
54,017

 
54.80

Vested
(11,049
)
 
44.62

Forfeited
(6,253
)
 
51.92

Awarded and Unvested Units at December 31, 2018
71,419

 
$
51.92